From 6f132fbe40987ab14b04b3d70593bb29831c8fa1 Mon Sep 17 00:00:00 2001
From: Simon Frei <simon-frei@hotmail.com>
Date: Fri, 14 Oct 2022 15:21:35 +0200
Subject: [PATCH] Add Shell Uart and queue for shell cmds (not tested)

---
 ADIS_tinyK22_SplitFlap/.cproject              |   91 +-
 .../ADIS_tinyK22_SplitFlap.mex                |    6 +-
 ADIS_tinyK22_SplitFlap/board/clock_config.c   |    7 +
 ADIS_tinyK22_SplitFlap/drivers/fsl_lpuart.c   | 2283 +++++++++++++++++
 ADIS_tinyK22_SplitFlap/drivers/fsl_lpuart.h   | 1064 ++++++++
 .../source/IncludeMcuLibConfig.h              |    7 +
 ADIS_tinyK22_SplitFlap/source/platform.c      |    6 +
 ADIS_tinyK22_SplitFlap/source/shell.c         |   53 +-
 ADIS_tinyK22_SplitFlap/source/shell.h         |   19 +
 9 files changed, 3510 insertions(+), 26 deletions(-)
 create mode 100644 ADIS_tinyK22_SplitFlap/drivers/fsl_lpuart.c
 create mode 100644 ADIS_tinyK22_SplitFlap/drivers/fsl_lpuart.h

diff --git a/ADIS_tinyK22_SplitFlap/.cproject b/ADIS_tinyK22_SplitFlap/.cproject
index 6f7be2d..ef034ae 100644
--- a/ADIS_tinyK22_SplitFlap/.cproject
+++ b/ADIS_tinyK22_SplitFlap/.cproject
@@ -105,6 +105,7 @@
 									<listOptionValue builtIn="false" value="__USE_CMSIS"/>
 									<listOptionValue builtIn="false" value="DEBUG"/>
 									<listOptionValue builtIn="false" value="__NEWLIB__"/>
+									<listOptionValue builtIn="false" value="SDK_OS_FREE_RTOS"/>
 								</option>
 								<option id="com.crt.advproject.gcc.fpu.1162476593" name="Floating point" superClass="com.crt.advproject.gcc.fpu" useByScannerDiscovery="true" value="com.crt.advproject.gcc.fpu.fpv4.hard" valueType="enumerated"/>
 								<option id="com.crt.advproject.gcc.thumb.512416703" name="Thumb mode" superClass="com.crt.advproject.gcc.thumb" useByScannerDiscovery="false" value="true" valueType="boolean"/>
@@ -123,15 +124,9 @@
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/uart}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/lists}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/board}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/board}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freertos/freertos_kernel/include}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freertos/freertos_kernel/portable/GCC/ARM_CM4F}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/source}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/drivers}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/device}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/CMSIS}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/serial_manager}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/utilities}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/uart}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/lists}&quot;"/>
 									<listOptionValue builtIn="false" value="${MCULIB}/"/>
 									<listOptionValue builtIn="false" value="${MCULIB}/config"/>
 									<listOptionValue builtIn="false" value="${MCULIB}/config/fonts"/>
@@ -210,8 +205,33 @@
 								<option id="com.crt.advproject.gas.arch.59322756" name="Architecture" superClass="com.crt.advproject.gas.arch" value="com.crt.advproject.gas.target.cm4" valueType="enumerated"/>
 								<option id="gnu.both.asm.option.flags.crt.538274977" name="Assembler flags" superClass="gnu.both.asm.option.flags.crt" value="-c -x assembler-with-cpp -D__NEWLIB__" valueType="string"/>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="gnu.both.asm.option.include.paths.1038992328" name="Include paths (-I)" superClass="gnu.both.asm.option.include.paths" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/drivers}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/device}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/CMSIS}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/serial_manager}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/utilities}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/uart}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/lists}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/board}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freertos/freertos_kernel/include}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freertos/freertos_kernel/portable/GCC/ARM_CM4F}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/source}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/config&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/config/fonts&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/fonts&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/src&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/FreeRTOS/Source/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/FreeRTOS/Source/portable/GCC/ARM_CM4F&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/SEGGER_RTT&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/SEGGER_Sysview&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/TraceRecorder&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/TraceRecorder/config&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/TraceRecorder/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/TraceRecorder/streamports/Jlink_RTT/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/HD44780&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/FatFS&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${MCULIB}/FatFS/source&quot;"/>
 								</option>
 								<option id="gnu.both.asm.option.warnings.nowarn.2107355947" name="Suppress warnings (-W)" superClass="gnu.both.asm.option.warnings.nowarn"/>
 								<option id="gnu.both.asm.option.version.1901879634" name="Announce version (-v)" superClass="gnu.both.asm.option.version"/>
@@ -463,6 +483,7 @@
 									<listOptionValue builtIn="false" value="__USE_CMSIS"/>
 									<listOptionValue builtIn="false" value="NDEBUG"/>
 									<listOptionValue builtIn="false" value="__NEWLIB__"/>
+									<listOptionValue builtIn="false" value="SDK_OS_FREE_RTOS"/>
 								</option>
 								<option id="gnu.c.compiler.option.preprocessor.undef.symbol.1092760296" name="Undefined symbols (-U)" superClass="gnu.c.compiler.option.preprocessor.undef.symbol" useByScannerDiscovery="false"/>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="gnu.c.compiler.option.include.paths.2049780101" name="Include paths (-I)" superClass="gnu.c.compiler.option.include.paths" useByScannerDiscovery="false" valueType="includePath">
@@ -474,15 +495,25 @@
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/uart}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/lists}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/board}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/board}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freertos/freertos_kernel/include}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freertos/freertos_kernel/portable/GCC/ARM_CM4F}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/source}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/drivers}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/device}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/CMSIS}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/serial_manager}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/utilities}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/uart}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/lists}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/config&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/config/fonts&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/fonts&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/src&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/FreeRTOS/Source/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/FreeRTOS/Source/portable/GCC/ARM_CM4F&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/SEGGER_RTT&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/SEGGER_Sysview&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/TraceRecorder&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/TraceRecorder/config&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/TraceRecorder/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/TraceRecorder/streamports/Jlink_RTT/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/HD44780&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/FatFS&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/FatFS/source&quot;"/>
 								</option>
 								<option id="gnu.c.compiler.option.include.files.1847403210" name="Include files (-include)" superClass="gnu.c.compiler.option.include.files" useByScannerDiscovery="false"/>
 								<option id="gnu.c.compiler.option.optimization.flags.115821318" name="Other optimization flags" superClass="gnu.c.compiler.option.optimization.flags" useByScannerDiscovery="false" value="-fno-common" valueType="string"/>
@@ -541,8 +572,33 @@
 								<option id="com.crt.advproject.gas.arch.1053219152" name="Architecture" superClass="com.crt.advproject.gas.arch" value="com.crt.advproject.gas.target.cm4" valueType="enumerated"/>
 								<option id="gnu.both.asm.option.flags.crt.289110214" name="Assembler flags" superClass="gnu.both.asm.option.flags.crt" value="-c -x assembler-with-cpp -D__NEWLIB__" valueType="string"/>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="gnu.both.asm.option.include.paths.1130502917" name="Include paths (-I)" superClass="gnu.both.asm.option.include.paths" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/drivers}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/device}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/CMSIS}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/serial_manager}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/utilities}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/uart}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/component/lists}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/board}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freertos/freertos_kernel/include}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/freertos/freertos_kernel/portable/GCC/ARM_CM4F}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/source}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/config&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/config/fonts&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/fonts&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/src&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/FreeRTOS/Source/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/FreeRTOS/Source/portable/GCC/ARM_CM4F&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/SEGGER_RTT&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/SEGGER_Sysview&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/TraceRecorder&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/TraceRecorder/config&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/TraceRecorder/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/TraceRecorder/streamports/Jlink_RTT/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/HD44780&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/FatFS&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;../Debug/${MCULIB}/FatFS/source&quot;"/>
 								</option>
 								<option id="gnu.both.asm.option.warnings.nowarn.449849235" name="Suppress warnings (-W)" superClass="gnu.both.asm.option.warnings.nowarn"/>
 								<option id="gnu.both.asm.option.version.1751918560" name="Announce version (-v)" superClass="gnu.both.asm.option.version"/>
@@ -677,6 +733,7 @@
 					</folderInfo>
 					<sourceEntries>
 						<entry flags="LOCAL|VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="CMSIS"/>
+						<entry excluding="FreeRTOS/Source/portable/GCC/RISC-V|FreeRTOS/Source/portable/GCC/ARM_CM33|TraceRecorder|SEGGER_Sysview|minIni|LittlevGL|littleFS|HD44780|fonts|FatFS" flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="McuLib"/>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="board"/>
 						<entry flags="LOCAL|VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="component"/>
 						<entry flags="LOCAL|VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="device"/>
@@ -712,7 +769,7 @@
 	<storageModule moduleId="com.nxp.mcuxpresso.core.datamodels">
 		<sdkName>SDK_2.x_MK22FN512xxx12</sdkName>
 		<sdkVersion>2.12.0</sdkVersion>
-		<sdkComponents>middleware.baremetal.MK22F51212;platform.drivers.smc.MK22F51212;platform.drivers.port.MK22F51212;platform.drivers.dspi.MK22F51212;platform.drivers.adc16.MK22F51212;platform.drivers.uart.MK22F51212;platform.drivers.clock.MK22F51212;platform.drivers.rtc.MK22F51212;platform.drivers.common.MK22F51212;platform.drivers.i2c.MK22F51212;platform.drivers.gpio.MK22F51212;device.MK22F51212_system.MK22F51212;device.MK22F51212_CMSIS.MK22F51212;CMSIS_Include_core_cm.MK22F51212;platform.utilities.assert.MK22F51212;component.serial_manager_uart.MK22F51212;utility.debug_console.MK22F51212;component.serial_manager.MK22F51212;component.uart_adapter.MK22F51212;component.lists.MK22F51212;project_template.MK22F51212.MK22F51212;device.MK22F51212_startup.MK22F51212;platform.drivers.sim.MK22F51212;</sdkComponents>
+		<sdkComponents>platform.drivers.smc.MK22F51212;platform.drivers.port.MK22F51212;platform.drivers.dspi.MK22F51212;platform.drivers.adc16.MK22F51212;platform.drivers.uart.MK22F51212;platform.drivers.clock.MK22F51212;platform.drivers.rtc.MK22F51212;platform.drivers.common.MK22F51212;platform.drivers.i2c.MK22F51212;platform.drivers.gpio.MK22F51212;device.MK22F51212_system.MK22F51212;device.MK22F51212_CMSIS.MK22F51212;CMSIS_Include_core_cm.MK22F51212;platform.utilities.assert.MK22F51212;component.serial_manager_uart.MK22F51212;utility.debug_console.MK22F51212;component.serial_manager.MK22F51212;component.uart_adapter.MK22F51212;component.lists.MK22F51212;project_template.MK22F51212.MK22F51212;device.MK22F51212_startup.MK22F51212;platform.drivers.sim.MK22F51212;middleware.freertos-kernel.MK22F51212;platform.drivers.lpuart.MK22F51212;</sdkComponents>
 		<package>MK22FN512VLH12</package>
 		<core>cm4</core>
 		<coreId>core0_MK22FN512xxx12</coreId>
diff --git a/ADIS_tinyK22_SplitFlap/ADIS_tinyK22_SplitFlap.mex b/ADIS_tinyK22_SplitFlap/ADIS_tinyK22_SplitFlap.mex
index 6b5eeff..8c181ae 100644
--- a/ADIS_tinyK22_SplitFlap/ADIS_tinyK22_SplitFlap.mex
+++ b/ADIS_tinyK22_SplitFlap/ADIS_tinyK22_SplitFlap.mex
@@ -75,11 +75,15 @@
                   <clock_output id="Flash_clock.outFreq" value="10.48576 MHz" locked="false" accuracy=""/>
                   <clock_output id="FlexBus_clock.outFreq" value="10.48576 MHz" locked="false" accuracy=""/>
                   <clock_output id="LPO_clock.outFreq" value="1 kHz" locked="false" accuracy=""/>
+                  <clock_output id="LPUARTCLK.outFreq" value="20.97152 MHz" locked="false" accuracy=""/>
                   <clock_output id="MCGFFCLK.outFreq" value="32.768 kHz" locked="false" accuracy=""/>
                   <clock_output id="PLLFLLCLK.outFreq" value="20.97152 MHz" locked="false" accuracy=""/>
                   <clock_output id="System_clock.outFreq" value="20.97152 MHz" locked="false" accuracy=""/>
                </clock_outputs>
-               <clock_settings/>
+               <clock_settings>
+                  <setting id="LPUARTClkConfig" value="yes" locked="false"/>
+                  <setting id="SIM.LPUARTSRCSEL.sel" value="SIM.PLLFLLSEL" locked="false"/>
+               </clock_settings>
                <called_from_default_init>true</called_from_default_init>
             </clock_configuration>
          </clock_configurations>
diff --git a/ADIS_tinyK22_SplitFlap/board/clock_config.c b/ADIS_tinyK22_SplitFlap/board/clock_config.c
index 06ea4be..63abba4 100644
--- a/ADIS_tinyK22_SplitFlap/board/clock_config.c
+++ b/ADIS_tinyK22_SplitFlap/board/clock_config.c
@@ -50,6 +50,7 @@ processor_version: 12.0.0
 #define MCG_PLL_DISABLE                                   0U  /*!< MCGPLLCLK disabled */
 #define OSC_CAP0P                                         0U  /*!< Oscillator 0pF capacitor load */
 #define OSC_ER_CLK_DISABLE                                0U  /*!< Disable external reference clock */
+#define SIM_LPUART_CLK_SEL_PLLFLLSEL_CLK                  1U  /*!< LPUART clock select: PLLFLLSEL output clock */
 #define SIM_OSC32KSEL_OSC32KCLK_CLK                       0U  /*!< OSC32KSEL select: OSC32KCLK clock */
 #define SIM_PLLFLLSEL_MCGFLLCLK_CLK                       0U  /*!< PLLFLL select: MCGFLLCLK clock */
 
@@ -97,9 +98,13 @@ outputs:
 - {id: Flash_clock.outFreq, value: 10.48576 MHz}
 - {id: FlexBus_clock.outFreq, value: 10.48576 MHz}
 - {id: LPO_clock.outFreq, value: 1 kHz}
+- {id: LPUARTCLK.outFreq, value: 20.97152 MHz}
 - {id: MCGFFCLK.outFreq, value: 32.768 kHz}
 - {id: PLLFLLCLK.outFreq, value: 20.97152 MHz}
 - {id: System_clock.outFreq, value: 20.97152 MHz}
+settings:
+- {id: LPUARTClkConfig, value: 'yes'}
+- {id: SIM.LPUARTSRCSEL.sel, value: SIM.PLLFLLSEL}
  * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
 /* clang-format on */
 
@@ -165,5 +170,7 @@ void BOARD_BootClockRUN(void)
     CLOCK_SetSimConfig(&simConfig_BOARD_BootClockRUN);
     /* Set SystemCoreClock variable. */
     SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK;
+    /* Set LPUART clock source. */
+    CLOCK_SetLpuartClock(SIM_LPUART_CLK_SEL_PLLFLLSEL_CLK);
 }
 
diff --git a/ADIS_tinyK22_SplitFlap/drivers/fsl_lpuart.c b/ADIS_tinyK22_SplitFlap/drivers/fsl_lpuart.c
new file mode 100644
index 0000000..7da6943
--- /dev/null
+++ b/ADIS_tinyK22_SplitFlap/drivers/fsl_lpuart.c
@@ -0,0 +1,2283 @@
+/*
+ * Copyright (c) 2015-2016, Freescale Semiconductor, Inc.
+ * Copyright 2016-2022 NXP
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include "fsl_lpuart.h"
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+
+/* Component ID definition, used by tools. */
+#ifndef FSL_COMPONENT_ID
+#define FSL_COMPONENT_ID "platform.drivers.lpuart"
+#endif
+
+/* LPUART transfer state. */
+enum
+{
+    kLPUART_TxIdle, /*!< TX idle. */
+    kLPUART_TxBusy, /*!< TX busy. */
+    kLPUART_RxIdle, /*!< RX idle. */
+    kLPUART_RxBusy  /*!< RX busy. */
+};
+
+/*******************************************************************************
+ * Prototypes
+ ******************************************************************************/
+/*!
+ * @brief Check whether the RX ring buffer is full.
+ *
+ * @userData handle LPUART handle pointer.
+ * @retval true  RX ring buffer is full.
+ * @retval false RX ring buffer is not full.
+ */
+static bool LPUART_TransferIsRxRingBufferFull(LPUART_Type *base, lpuart_handle_t *handle);
+
+/*!
+ * @brief Write to TX register using non-blocking method.
+ *
+ * This function writes data to the TX register directly, upper layer must make
+ * sure the TX register is empty or TX FIFO has empty room before calling this function.
+ *
+ * @note This function does not check whether all the data has been sent out to bus,
+ * so before disable TX, check kLPUART_TransmissionCompleteFlag to ensure the TX is
+ * finished.
+ *
+ * @param base LPUART peripheral base address.
+ * @param data Start address of the data to write.
+ * @param length Size of the buffer to be sent.
+ */
+static void LPUART_WriteNonBlocking(LPUART_Type *base, const uint8_t *data, size_t length);
+
+/*!
+ * @brief Read RX register using non-blocking method.
+ *
+ * This function reads data from the TX register directly, upper layer must make
+ * sure the RX register is full or TX FIFO has data before calling this function.
+ *
+ * @param base LPUART peripheral base address.
+ * @param data Start address of the buffer to store the received data.
+ * @param length Size of the buffer.
+ */
+static void LPUART_ReadNonBlocking(LPUART_Type *base, uint8_t *data, size_t length);
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+/* Array of LPUART peripheral base address. */
+static LPUART_Type *const s_lpuartBases[] = LPUART_BASE_PTRS;
+/* Array of LPUART handle. */
+void *s_lpuartHandle[ARRAY_SIZE(s_lpuartBases)];
+/* Array of LPUART IRQ number. */
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+static const IRQn_Type s_lpuartRxIRQ[] = LPUART_RX_IRQS;
+const IRQn_Type s_lpuartTxIRQ[]        = LPUART_TX_IRQS;
+#else
+const IRQn_Type s_lpuartIRQ[] = LPUART_RX_TX_IRQS;
+#endif
+#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
+/* Array of LPUART clock name. */
+static const clock_ip_name_t s_lpuartClock[] = LPUART_CLOCKS;
+
+#if defined(LPUART_PERIPH_CLOCKS)
+/* Array of LPUART functional clock name. */
+static const clock_ip_name_t s_lpuartPeriphClocks[] = LPUART_PERIPH_CLOCKS;
+#endif
+
+#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
+
+/* LPUART ISR for transactional APIs. */
+#if defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+lpuart_isr_t s_lpuartIsr = (lpuart_isr_t)DefaultISR;
+#else
+lpuart_isr_t s_lpuartIsr;
+#endif
+
+/*******************************************************************************
+ * Code
+ ******************************************************************************/
+/*!
+ * brief Get the LPUART instance from peripheral base address.
+ *
+ * param base LPUART peripheral base address.
+ * return LPUART instance.
+ */
+uint32_t LPUART_GetInstance(LPUART_Type *base)
+{
+    uint32_t instance;
+
+    /* Find the instance index from base address mappings. */
+    for (instance = 0U; instance < ARRAY_SIZE(s_lpuartBases); instance++)
+    {
+        if (s_lpuartBases[instance] == base)
+        {
+            break;
+        }
+    }
+
+    assert(instance < ARRAY_SIZE(s_lpuartBases));
+
+    return instance;
+}
+
+/*!
+ * brief Get the length of received data in RX ring buffer.
+ *
+ * userData handle LPUART handle pointer.
+ * return Length of received data in RX ring buffer.
+ */
+size_t LPUART_TransferGetRxRingBufferLength(LPUART_Type *base, lpuart_handle_t *handle)
+{
+    assert(NULL != handle);
+
+    size_t size;
+    size_t tmpRxRingBufferSize   = handle->rxRingBufferSize;
+    uint16_t tmpRxRingBufferTail = handle->rxRingBufferTail;
+    uint16_t tmpRxRingBufferHead = handle->rxRingBufferHead;
+
+    if (tmpRxRingBufferTail > tmpRxRingBufferHead)
+    {
+        size = ((size_t)tmpRxRingBufferHead + tmpRxRingBufferSize - (size_t)tmpRxRingBufferTail);
+    }
+    else
+    {
+        size = ((size_t)tmpRxRingBufferHead - (size_t)tmpRxRingBufferTail);
+    }
+
+    return size;
+}
+
+static bool LPUART_TransferIsRxRingBufferFull(LPUART_Type *base, lpuart_handle_t *handle)
+{
+    assert(NULL != handle);
+
+    bool full;
+
+    if (LPUART_TransferGetRxRingBufferLength(base, handle) == (handle->rxRingBufferSize - 1U))
+    {
+        full = true;
+    }
+    else
+    {
+        full = false;
+    }
+    return full;
+}
+
+static void LPUART_WriteNonBlocking(LPUART_Type *base, const uint8_t *data, size_t length)
+{
+    assert(NULL != data);
+
+    size_t i;
+
+    /* The Non Blocking write data API assume user have ensured there is enough space in
+    peripheral to write. */
+    for (i = 0; i < length; i++)
+    {
+        base->DATA = data[i];
+    }
+}
+
+static void LPUART_ReadNonBlocking(LPUART_Type *base, uint8_t *data, size_t length)
+{
+    assert(NULL != data);
+
+    size_t i;
+#if defined(FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT
+    uint32_t ctrl        = base->CTRL;
+    bool isSevenDataBits = (((ctrl & LPUART_CTRL_M7_MASK) != 0U) ||
+                            (((ctrl & LPUART_CTRL_M_MASK) == 0U) && ((ctrl & LPUART_CTRL_PE_MASK) != 0U)));
+#endif
+
+    /* The Non Blocking read data API assume user have ensured there is enough space in
+    peripheral to write. */
+    for (i = 0; i < length; i++)
+    {
+#if defined(FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT
+        if (isSevenDataBits)
+        {
+            data[i] = (uint8_t)(base->DATA & 0x7FU);
+        }
+        else
+        {
+            data[i] = (uint8_t)base->DATA;
+        }
+#else
+        data[i] = (uint8_t)(base->DATA);
+#endif
+    }
+}
+
+/*!
+ * brief Initializes an LPUART instance with the user configuration structure and the peripheral clock.
+ *
+ * This function configures the LPUART module with user-defined settings. Call the LPUART_GetDefaultConfig() function
+ * to configure the configuration structure and get the default configuration.
+ * The example below shows how to use this API to configure the LPUART.
+ * code
+ *  lpuart_config_t lpuartConfig;
+ *  lpuartConfig.baudRate_Bps = 115200U;
+ *  lpuartConfig.parityMode = kLPUART_ParityDisabled;
+ *  lpuartConfig.dataBitsCount = kLPUART_EightDataBits;
+ *  lpuartConfig.isMsb = false;
+ *  lpuartConfig.stopBitCount = kLPUART_OneStopBit;
+ *  lpuartConfig.txFifoWatermark = 0;
+ *  lpuartConfig.rxFifoWatermark = 1;
+ *  LPUART_Init(LPUART1, &lpuartConfig, 20000000U);
+ * endcode
+ *
+ * param base LPUART peripheral base address.
+ * param config Pointer to a user-defined configuration structure.
+ * param srcClock_Hz LPUART clock source frequency in HZ.
+ * retval kStatus_LPUART_BaudrateNotSupport Baudrate is not support in current clock source.
+ * retval kStatus_Success LPUART initialize succeed
+ */
+status_t LPUART_Init(LPUART_Type *base, const lpuart_config_t *config, uint32_t srcClock_Hz)
+{
+    assert(NULL != config);
+    assert(0U < config->baudRate_Bps);
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+    assert((uint8_t)FSL_FEATURE_LPUART_FIFO_SIZEn(base) > config->txFifoWatermark);
+    assert((uint8_t)FSL_FEATURE_LPUART_FIFO_SIZEn(base) > config->rxFifoWatermark);
+#endif
+
+    status_t status = kStatus_Success;
+    uint32_t temp;
+    uint16_t sbr, sbrTemp;
+    uint8_t osr, osrTemp;
+    uint32_t tempDiff, calculatedBaud, baudDiff;
+
+    /* This LPUART instantiation uses a slightly different baud rate calculation
+     * The idea is to use the best OSR (over-sampling rate) possible
+     * Note, OSR is typically hard-set to 16 in other LPUART instantiations
+     * loop to find the best OSR value possible, one that generates minimum baudDiff
+     * iterate through the rest of the supported values of OSR */
+
+    baudDiff = config->baudRate_Bps;
+    osr      = 0U;
+    sbr      = 0U;
+    for (osrTemp = 4U; osrTemp <= 32U; osrTemp++)
+    {
+        /* calculate the temporary sbr value   */
+        sbrTemp = (uint16_t)((srcClock_Hz * 10U / (config->baudRate_Bps * (uint32_t)osrTemp) + 5U) / 10U);
+        /*set sbrTemp to 1 if the sourceClockInHz can not satisfy the desired baud rate*/
+        if (sbrTemp == 0U)
+        {
+            sbrTemp = 1U;
+        }
+        /* Calculate the baud rate based on the temporary OSR and SBR values */
+        calculatedBaud = (srcClock_Hz / ((uint32_t)osrTemp * (uint32_t)sbrTemp));
+        tempDiff       = calculatedBaud > config->baudRate_Bps ? (calculatedBaud - config->baudRate_Bps) :
+                                                           (config->baudRate_Bps - calculatedBaud);
+
+        if (tempDiff <= baudDiff)
+        {
+            baudDiff = tempDiff;
+            osr      = osrTemp; /* update and store the best OSR value calculated */
+            sbr      = sbrTemp; /* update store the best SBR value calculated */
+        }
+    }
+
+    /* Check to see if actual baud rate is within 3% of desired baud rate
+     * based on the best calculate OSR value */
+    if (baudDiff > ((config->baudRate_Bps / 100U) * 3U))
+    {
+        /* Unacceptable baud rate difference of more than 3%*/
+        status = kStatus_LPUART_BaudrateNotSupport;
+    }
+    else
+    {
+#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
+
+        uint32_t instance = LPUART_GetInstance(base);
+
+        /* Enable lpuart clock */
+        (void)CLOCK_EnableClock(s_lpuartClock[instance]);
+#if defined(LPUART_PERIPH_CLOCKS)
+        (void)CLOCK_EnableClock(s_lpuartPeriphClocks[instance]);
+#endif
+
+#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
+
+#if defined(FSL_FEATURE_LPUART_HAS_GLOBAL) && FSL_FEATURE_LPUART_HAS_GLOBAL
+        /*Reset all internal logic and registers, except the Global Register */
+        LPUART_SoftwareReset(base);
+#else
+        /* Disable LPUART TX RX before setting. */
+        base->CTRL &= ~(LPUART_CTRL_TE_MASK | LPUART_CTRL_RE_MASK);
+#endif
+
+        temp = base->BAUD;
+
+        /* Acceptable baud rate, check if OSR is between 4x and 7x oversampling.
+         * If so, then "BOTHEDGE" sampling must be turned on */
+        if ((osr > 3U) && (osr < 8U))
+        {
+            temp |= LPUART_BAUD_BOTHEDGE_MASK;
+        }
+
+        /* program the osr value (bit value is one less than actual value) */
+        temp &= ~LPUART_BAUD_OSR_MASK;
+        temp |= LPUART_BAUD_OSR((uint32_t)osr - 1UL);
+
+        /* write the sbr value to the BAUD registers */
+        temp &= ~LPUART_BAUD_SBR_MASK;
+        base->BAUD = temp | LPUART_BAUD_SBR(sbr);
+
+        /* Set bit count and parity mode. */
+        base->BAUD &= ~LPUART_BAUD_M10_MASK;
+
+        temp = base->CTRL & ~(LPUART_CTRL_PE_MASK | LPUART_CTRL_PT_MASK | LPUART_CTRL_M_MASK | LPUART_CTRL_ILT_MASK |
+                              LPUART_CTRL_IDLECFG_MASK);
+
+        temp |= (uint8_t)config->parityMode | LPUART_CTRL_IDLECFG(config->rxIdleConfig) |
+                LPUART_CTRL_ILT(config->rxIdleType);
+
+#if defined(FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT
+        if (kLPUART_SevenDataBits == config->dataBitsCount)
+        {
+            if (kLPUART_ParityDisabled != config->parityMode)
+            {
+                temp &= ~LPUART_CTRL_M7_MASK; /* Seven data bits and one parity bit */
+            }
+            else
+            {
+                temp |= LPUART_CTRL_M7_MASK;
+            }
+        }
+        else
+#endif
+        {
+            if (kLPUART_ParityDisabled != config->parityMode)
+            {
+                temp |= LPUART_CTRL_M_MASK; /* Eight data bits and one parity bit */
+            }
+        }
+
+        base->CTRL = temp;
+
+#if defined(FSL_FEATURE_LPUART_HAS_STOP_BIT_CONFIG_SUPPORT) && FSL_FEATURE_LPUART_HAS_STOP_BIT_CONFIG_SUPPORT
+        /* set stop bit per char */
+        temp       = base->BAUD & ~LPUART_BAUD_SBNS_MASK;
+        base->BAUD = temp | LPUART_BAUD_SBNS((uint8_t)config->stopBitCount);
+#endif
+
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+        /* Set tx/rx WATER watermark
+           Note:
+           Take care of the RX FIFO, RX interrupt request only assert when received bytes
+           equal or more than RX water mark, there is potential issue if RX water
+           mark larger than 1.
+           For example, if RX FIFO water mark is 2, upper layer needs 5 bytes and
+           5 bytes are received. the last byte will be saved in FIFO but not trigger
+           RX interrupt because the water mark is 2.
+         */
+        base->WATER = (((uint32_t)(config->rxFifoWatermark) << 16U) | config->txFifoWatermark);
+
+        /* Enable tx/rx FIFO */
+        base->FIFO |= (LPUART_FIFO_TXFE_MASK | LPUART_FIFO_RXFE_MASK);
+
+        /* Flush FIFO */
+        base->FIFO |= (LPUART_FIFO_TXFLUSH_MASK | LPUART_FIFO_RXFLUSH_MASK);
+#endif
+
+        /* Clear all status flags */
+        temp = (LPUART_STAT_RXEDGIF_MASK | LPUART_STAT_IDLE_MASK | LPUART_STAT_OR_MASK | LPUART_STAT_NF_MASK |
+                LPUART_STAT_FE_MASK | LPUART_STAT_PF_MASK);
+
+#if defined(FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT) && FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT
+        temp |= LPUART_STAT_LBKDIF_MASK;
+#endif
+
+#if defined(FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING) && FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING
+        temp |= (LPUART_STAT_MA1F_MASK | LPUART_STAT_MA2F_MASK);
+#endif
+
+#if defined(FSL_FEATURE_LPUART_HAS_MODEM_SUPPORT) && FSL_FEATURE_LPUART_HAS_MODEM_SUPPORT
+        /* Set the CTS configuration/TX CTS source. */
+        base->MODIR |= LPUART_MODIR_TXCTSC(config->txCtsConfig) | LPUART_MODIR_TXCTSSRC(config->txCtsSource);
+        if (true == config->enableRxRTS)
+        {
+            /* Enable the receiver RTS(request-to-send) function. */
+            base->MODIR |= LPUART_MODIR_RXRTSE_MASK;
+        }
+        if (true == config->enableTxCTS)
+        {
+            /* Enable the CTS(clear-to-send) function. */
+            base->MODIR |= LPUART_MODIR_TXCTSE_MASK;
+        }
+#endif
+
+        /* Set data bits order. */
+        if (true == config->isMsb)
+        {
+            temp |= LPUART_STAT_MSBF_MASK;
+        }
+        else
+        {
+            temp &= ~LPUART_STAT_MSBF_MASK;
+        }
+
+        base->STAT |= temp;
+
+        /* Enable TX/RX base on configure structure. */
+        temp = base->CTRL;
+        if (true == config->enableTx)
+        {
+            temp |= LPUART_CTRL_TE_MASK;
+        }
+
+        if (true == config->enableRx)
+        {
+            temp |= LPUART_CTRL_RE_MASK;
+        }
+
+        base->CTRL = temp;
+    }
+
+    return status;
+}
+/*!
+ * brief Deinitializes a LPUART instance.
+ *
+ * This function waits for transmit to complete, disables TX and RX, and disables the LPUART clock.
+ *
+ * param base LPUART peripheral base address.
+ */
+void LPUART_Deinit(LPUART_Type *base)
+{
+    uint32_t temp;
+
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+    /* Wait tx FIFO send out*/
+    while (0U != ((base->WATER & LPUART_WATER_TXCOUNT_MASK) >> LPUART_WATER_TXWATER_SHIFT))
+    {
+    }
+#endif
+    /* Wait last char shift out */
+    while (0U == (base->STAT & LPUART_STAT_TC_MASK))
+    {
+    }
+
+    /* Clear all status flags */
+    temp = (LPUART_STAT_RXEDGIF_MASK | LPUART_STAT_IDLE_MASK | LPUART_STAT_OR_MASK | LPUART_STAT_NF_MASK |
+            LPUART_STAT_FE_MASK | LPUART_STAT_PF_MASK);
+
+#if defined(FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT) && FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT
+    temp |= LPUART_STAT_LBKDIF_MASK;
+#endif
+
+#if defined(FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING) && FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING
+    temp |= (LPUART_STAT_MA1F_MASK | LPUART_STAT_MA2F_MASK);
+#endif
+
+    base->STAT |= temp;
+
+    /* Disable the module. */
+    base->CTRL = 0U;
+
+#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
+    uint32_t instance = LPUART_GetInstance(base);
+
+    /* Disable lpuart clock */
+    (void)CLOCK_DisableClock(s_lpuartClock[instance]);
+
+#if defined(LPUART_PERIPH_CLOCKS)
+    (void)CLOCK_DisableClock(s_lpuartPeriphClocks[instance]);
+#endif
+
+#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
+}
+
+/*!
+ * brief Gets the default configuration structure.
+ *
+ * This function initializes the LPUART configuration structure to a default value. The default
+ * values are:
+ *   lpuartConfig->baudRate_Bps = 115200U;
+ *   lpuartConfig->parityMode = kLPUART_ParityDisabled;
+ *   lpuartConfig->dataBitsCount = kLPUART_EightDataBits;
+ *   lpuartConfig->isMsb = false;
+ *   lpuartConfig->stopBitCount = kLPUART_OneStopBit;
+ *   lpuartConfig->txFifoWatermark = 0;
+ *   lpuartConfig->rxFifoWatermark = 1;
+ *   lpuartConfig->rxIdleType = kLPUART_IdleTypeStartBit;
+ *   lpuartConfig->rxIdleConfig = kLPUART_IdleCharacter1;
+ *   lpuartConfig->enableTx = false;
+ *   lpuartConfig->enableRx = false;
+ *
+ * param config Pointer to a configuration structure.
+ */
+void LPUART_GetDefaultConfig(lpuart_config_t *config)
+{
+    assert(NULL != config);
+
+    /* Initializes the configure structure to zero. */
+    (void)memset(config, 0, sizeof(*config));
+
+    config->baudRate_Bps  = 115200U;
+    config->parityMode    = kLPUART_ParityDisabled;
+    config->dataBitsCount = kLPUART_EightDataBits;
+    config->isMsb         = false;
+#if defined(FSL_FEATURE_LPUART_HAS_STOP_BIT_CONFIG_SUPPORT) && FSL_FEATURE_LPUART_HAS_STOP_BIT_CONFIG_SUPPORT
+    config->stopBitCount = kLPUART_OneStopBit;
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+    config->txFifoWatermark = 0U;
+    config->rxFifoWatermark = 0U;
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_MODEM_SUPPORT) && FSL_FEATURE_LPUART_HAS_MODEM_SUPPORT
+    config->enableRxRTS = false;
+    config->enableTxCTS = false;
+    config->txCtsConfig = kLPUART_CtsSampleAtStart;
+    config->txCtsSource = kLPUART_CtsSourcePin;
+#endif
+    config->rxIdleType   = kLPUART_IdleTypeStartBit;
+    config->rxIdleConfig = kLPUART_IdleCharacter1;
+    config->enableTx     = false;
+    config->enableRx     = false;
+}
+
+/*!
+ * brief Sets the LPUART instance baudrate.
+ *
+ * This function configures the LPUART module baudrate. This function is used to update
+ * the LPUART module baudrate after the LPUART module is initialized by the LPUART_Init.
+ * code
+ *  LPUART_SetBaudRate(LPUART1, 115200U, 20000000U);
+ * endcode
+ *
+ * param base LPUART peripheral base address.
+ * param baudRate_Bps LPUART baudrate to be set.
+ * param srcClock_Hz LPUART clock source frequency in HZ.
+ * retval kStatus_LPUART_BaudrateNotSupport Baudrate is not supported in the current clock source.
+ * retval kStatus_Success Set baudrate succeeded.
+ */
+status_t LPUART_SetBaudRate(LPUART_Type *base, uint32_t baudRate_Bps, uint32_t srcClock_Hz)
+{
+    assert(0U < baudRate_Bps);
+
+    status_t status = kStatus_Success;
+    uint32_t temp, oldCtrl;
+    uint16_t sbr, sbrTemp;
+    uint8_t osr, osrTemp;
+    uint32_t tempDiff, calculatedBaud, baudDiff;
+
+    /* This LPUART instantiation uses a slightly different baud rate calculation
+     * The idea is to use the best OSR (over-sampling rate) possible
+     * Note, OSR is typically hard-set to 16 in other LPUART instantiations
+     * loop to find the best OSR value possible, one that generates minimum baudDiff
+     * iterate through the rest of the supported values of OSR */
+
+    baudDiff = baudRate_Bps;
+    osr      = 0U;
+    sbr      = 0U;
+    for (osrTemp = 4U; osrTemp <= 32U; osrTemp++)
+    {
+        /* calculate the temporary sbr value   */
+        sbrTemp = (uint16_t)((srcClock_Hz * 10U / (baudRate_Bps * (uint32_t)osrTemp) + 5U) / 10U);
+        /*set sbrTemp to 1 if the sourceClockInHz can not satisfy the desired baud rate*/
+        if (sbrTemp == 0U)
+        {
+            sbrTemp = 1U;
+        }
+        /* Calculate the baud rate based on the temporary OSR and SBR values */
+        calculatedBaud = srcClock_Hz / ((uint32_t)osrTemp * (uint32_t)sbrTemp);
+
+        tempDiff = calculatedBaud > baudRate_Bps ? (calculatedBaud - baudRate_Bps) : (baudRate_Bps - calculatedBaud);
+
+        if (tempDiff <= baudDiff)
+        {
+            baudDiff = tempDiff;
+            osr      = osrTemp; /* update and store the best OSR value calculated */
+            sbr      = sbrTemp; /* update store the best SBR value calculated */
+        }
+    }
+
+    /* Check to see if actual baud rate is within 3% of desired baud rate
+     * based on the best calculate OSR value */
+    if (baudDiff < (uint32_t)((baudRate_Bps / 100U) * 3U))
+    {
+        /* Store CTRL before disable Tx and Rx */
+        oldCtrl = base->CTRL;
+
+        /* Disable LPUART TX RX before setting. */
+        base->CTRL &= ~(LPUART_CTRL_TE_MASK | LPUART_CTRL_RE_MASK);
+
+        temp = base->BAUD;
+
+        /* Acceptable baud rate, check if OSR is between 4x and 7x oversampling.
+         * If so, then "BOTHEDGE" sampling must be turned on */
+        if ((osr > 3U) && (osr < 8U))
+        {
+            temp |= LPUART_BAUD_BOTHEDGE_MASK;
+        }
+
+        /* program the osr value (bit value is one less than actual value) */
+        temp &= ~LPUART_BAUD_OSR_MASK;
+        temp |= LPUART_BAUD_OSR((uint32_t)osr - 1UL);
+
+        /* write the sbr value to the BAUD registers */
+        temp &= ~LPUART_BAUD_SBR_MASK;
+        base->BAUD = temp | LPUART_BAUD_SBR(sbr);
+
+        /* Restore CTRL. */
+        base->CTRL = oldCtrl;
+    }
+    else
+    {
+        /* Unacceptable baud rate difference of more than 3%*/
+        status = kStatus_LPUART_BaudrateNotSupport;
+    }
+
+    return status;
+}
+
+/*!
+ * brief Enable 9-bit data mode for LPUART.
+ *
+ * This function set the 9-bit mode for LPUART module. The 9th bit is not used for parity thus can be modified by user.
+ *
+ * param base LPUART peripheral base address.
+ * param enable true to enable, flase to disable.
+ */
+void LPUART_Enable9bitMode(LPUART_Type *base, bool enable)
+{
+    assert(base != NULL);
+
+    uint32_t temp = 0U;
+
+    if (enable)
+    {
+        /* Set LPUART_CTRL_M for 9-bit mode, clear LPUART_CTRL_PE to disable parity. */
+        temp = base->CTRL & ~((uint32_t)LPUART_CTRL_PE_MASK | (uint32_t)LPUART_CTRL_M_MASK);
+        temp |= (uint32_t)LPUART_CTRL_M_MASK;
+        base->CTRL = temp;
+    }
+    else
+    {
+        /* Clear LPUART_CTRL_M. */
+        base->CTRL &= ~(uint32_t)LPUART_CTRL_M_MASK;
+    }
+#if defined(FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT
+    /* Clear LPUART_CTRL_M7 to disable 7-bit mode. */
+    base->CTRL &= ~(uint32_t)LPUART_CTRL_M7_MASK;
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_10BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_10BIT_DATA_SUPPORT
+    /* Clear LPUART_BAUD_M10 to disable 10-bit mode. */
+    base->BAUD &= ~(uint32_t)LPUART_BAUD_M10_MASK;
+#endif
+}
+
+/*!
+ * brief Transmit an address frame in 9-bit data mode.
+ *
+ * param base LPUART peripheral base address.
+ * param address LPUART slave address.
+ */
+void LPUART_SendAddress(LPUART_Type *base, uint8_t address)
+{
+    assert(base != NULL);
+
+    uint32_t temp = base->DATA & 0xFFFFFC00UL;
+    temp |= ((uint32_t)address | (1UL << LPUART_DATA_R8T8_SHIFT));
+    base->DATA = temp;
+}
+
+/*!
+ * brief Enables LPUART interrupts according to a provided mask.
+ *
+ * This function enables the LPUART interrupts according to a provided mask. The mask
+ * is a logical OR of enumeration members. See the ref _lpuart_interrupt_enable.
+ * This examples shows how to enable TX empty interrupt and RX full interrupt:
+ * code
+ *     LPUART_EnableInterrupts(LPUART1,kLPUART_TxDataRegEmptyInterruptEnable | kLPUART_RxDataRegFullInterruptEnable);
+ * endcode
+ *
+ * param base LPUART peripheral base address.
+ * param mask The interrupts to enable. Logical OR of ref _lpuart_interrupt_enable.
+ */
+void LPUART_EnableInterrupts(LPUART_Type *base, uint32_t mask)
+{
+    /* Only consider the real interrupt enable bits. */
+    mask &= (uint32_t)kLPUART_AllInterruptEnable;
+
+    /* Check int enable bits in base->BAUD */
+    uint32_t tempReg = base->BAUD;
+#if defined(FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT) && FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT
+    tempReg |= ((mask << 8U) & LPUART_BAUD_LBKDIE_MASK);
+    /* Clear bit 7 from mask */
+    mask &= ~(uint32_t)kLPUART_LinBreakInterruptEnable;
+#endif
+    tempReg |= ((mask << 8U) & LPUART_BAUD_RXEDGIE_MASK);
+    /* Clear bit 6 from mask */
+    mask &= ~(uint32_t)kLPUART_RxActiveEdgeInterruptEnable;
+    base->BAUD = tempReg;
+
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+    /* Check int enable bits in base->FIFO */
+    base->FIFO = (base->FIFO & ~(LPUART_FIFO_TXOF_MASK | LPUART_FIFO_RXUF_MASK)) |
+                 (mask & (LPUART_FIFO_TXOFE_MASK | LPUART_FIFO_RXUFE_MASK));
+    /* Clear bit 9 and bit 8 from mask */
+    mask &= ~((uint32_t)kLPUART_TxFifoOverflowInterruptEnable | (uint32_t)kLPUART_RxFifoUnderflowInterruptEnable);
+#endif
+
+    /* Set int enable bits in base->CTRL */
+    base->CTRL |= mask;
+}
+
+/*!
+ * brief Disables  LPUART interrupts according to a provided mask.
+ *
+ * This function disables the LPUART interrupts according to a provided mask. The mask
+ * is a logical OR of enumeration members. See ref _lpuart_interrupt_enable.
+ * This example shows how to disable the TX empty interrupt and RX full interrupt:
+ * code
+ *     LPUART_DisableInterrupts(LPUART1,kLPUART_TxDataRegEmptyInterruptEnable | kLPUART_RxDataRegFullInterruptEnable);
+ * endcode
+ *
+ * param base LPUART peripheral base address.
+ * param mask The interrupts to disable. Logical OR of ref _lpuart_interrupt_enable.
+ */
+void LPUART_DisableInterrupts(LPUART_Type *base, uint32_t mask)
+{
+    /* Only consider the real interrupt enable bits. */
+    mask &= (uint32_t)kLPUART_AllInterruptEnable;
+    /* Check int enable bits in base->BAUD */
+    uint32_t tempReg = base->BAUD;
+#if defined(FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT) && FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT
+    tempReg &= ~((mask << 8U) & LPUART_BAUD_LBKDIE_MASK);
+    /* Clear bit 7 from mask */
+    mask &= ~(uint32_t)kLPUART_LinBreakInterruptEnable;
+#endif
+    tempReg &= ~((mask << 8U) & LPUART_BAUD_RXEDGIE_MASK);
+    /* Clear bit 6 from mask */
+    mask &= ~(uint32_t)kLPUART_RxActiveEdgeInterruptEnable;
+    base->BAUD = tempReg;
+
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+    /* Check int enable bits in base->FIFO */
+    base->FIFO = (base->FIFO & ~(LPUART_FIFO_TXOF_MASK | LPUART_FIFO_RXUF_MASK)) &
+                 ~(mask & (LPUART_FIFO_TXOFE_MASK | LPUART_FIFO_RXUFE_MASK));
+    /* Clear bit 9 and bit 8 from mask */
+    mask &= ~((uint32_t)kLPUART_TxFifoOverflowInterruptEnable | (uint32_t)kLPUART_RxFifoUnderflowInterruptEnable);
+#endif
+
+    /* Check int enable bits in base->CTRL */
+    base->CTRL &= ~mask;
+}
+
+/*!
+ * brief Gets enabled LPUART interrupts.
+ *
+ * This function gets the enabled LPUART interrupts. The enabled interrupts are returned
+ * as the logical OR value of the enumerators ref _lpuart_interrupt_enable. To check
+ * a specific interrupt enable status, compare the return value with enumerators
+ * in ref _lpuart_interrupt_enable.
+ * For example, to check whether the TX empty interrupt is enabled:
+ * code
+ *     uint32_t enabledInterrupts = LPUART_GetEnabledInterrupts(LPUART1);
+ *
+ *     if (kLPUART_TxDataRegEmptyInterruptEnable & enabledInterrupts)
+ *     {
+ *         ...
+ *     }
+ * endcode
+ *
+ * param base LPUART peripheral base address.
+ * return LPUART interrupt flags which are logical OR of the enumerators in ref _lpuart_interrupt_enable.
+ */
+uint32_t LPUART_GetEnabledInterrupts(LPUART_Type *base)
+{
+    /* Check int enable bits in base->CTRL */
+    uint32_t temp = (uint32_t)(base->CTRL & (uint32_t)kLPUART_AllInterruptEnable);
+
+    /* Check int enable bits in base->BAUD */
+    temp = (temp & ~(uint32_t)kLPUART_RxActiveEdgeInterruptEnable) | ((base->BAUD & LPUART_BAUD_RXEDGIE_MASK) >> 8U);
+#if defined(FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT) && FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT
+    temp = (temp & ~(uint32_t)kLPUART_LinBreakInterruptEnable) | ((base->BAUD & LPUART_BAUD_LBKDIE_MASK) >> 8U);
+#endif
+
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+    /* Check int enable bits in base->FIFO */
+    temp =
+        (temp & ~((uint32_t)kLPUART_TxFifoOverflowInterruptEnable | (uint32_t)kLPUART_RxFifoUnderflowInterruptEnable)) |
+        (base->FIFO & (LPUART_FIFO_TXOFE_MASK | LPUART_FIFO_RXUFE_MASK));
+#endif
+
+    return temp;
+}
+
+/*!
+ * brief Gets LPUART status flags.
+ *
+ * This function gets all LPUART status flags. The flags are returned as the logical
+ * OR value of the enumerators ref _lpuart_flags. To check for a specific status,
+ * compare the return value with enumerators in the ref _lpuart_flags.
+ * For example, to check whether the TX is empty:
+ * code
+ *     if (kLPUART_TxDataRegEmptyFlag & LPUART_GetStatusFlags(LPUART1))
+ *     {
+ *         ...
+ *     }
+ * endcode
+ *
+ * param base LPUART peripheral base address.
+ * return LPUART status flags which are ORed by the enumerators in the _lpuart_flags.
+ */
+uint32_t LPUART_GetStatusFlags(LPUART_Type *base)
+{
+    uint32_t temp;
+    temp = base->STAT;
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+    temp |= (base->FIFO &
+             (LPUART_FIFO_TXEMPT_MASK | LPUART_FIFO_RXEMPT_MASK | LPUART_FIFO_TXOF_MASK | LPUART_FIFO_RXUF_MASK)) >>
+            16U;
+#endif
+    /* Only keeps the status bits */
+    temp &= (uint32_t)kLPUART_AllFlags;
+    return temp;
+}
+
+/*!
+ * brief Clears status flags with a provided mask.
+ *
+ * This function clears LPUART status flags with a provided mask. Automatically cleared flags
+ * can't be cleared by this function.
+ * Flags that can only cleared or set by hardware are:
+ *    kLPUART_TxDataRegEmptyFlag, kLPUART_TransmissionCompleteFlag, kLPUART_RxDataRegFullFlag,
+ *    kLPUART_RxActiveFlag, kLPUART_NoiseErrorFlag, kLPUART_ParityErrorFlag,
+ *    kLPUART_TxFifoEmptyFlag,kLPUART_RxFifoEmptyFlag
+ * Note: This API should be called when the Tx/Rx is idle, otherwise it takes no effects.
+ *
+ * param base LPUART peripheral base address.
+ * param mask the status flags to be cleared. The user can use the enumerators in the
+ *  _lpuart_status_flag_t to do the OR operation and get the mask.
+ * return 0 succeed, others failed.
+ * retval kStatus_LPUART_FlagCannotClearManually The flag can't be cleared by this function but
+ *         it is cleared automatically by hardware.
+ * retval kStatus_Success Status in the mask are cleared.
+ */
+status_t LPUART_ClearStatusFlags(LPUART_Type *base, uint32_t mask)
+{
+    uint32_t temp;
+    status_t status;
+
+    /* Only deal with the clearable flags */
+    mask &= (uint32_t)kLPUART_AllClearFlags;
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+    /* Status bits in FIFO register */
+    if ((mask & ((uint32_t)kLPUART_TxFifoOverflowFlag | (uint32_t)kLPUART_RxFifoUnderflowFlag)) != 0U)
+    {
+        /* Get the FIFO register value and mask the rx/tx FIFO flush bits and the status bits that can be W1C in case
+           they are written 1 accidentally. */
+        temp = (uint32_t)base->FIFO;
+        temp &= (uint32_t)(
+            ~(LPUART_FIFO_TXFLUSH_MASK | LPUART_FIFO_RXFLUSH_MASK | LPUART_FIFO_TXOF_MASK | LPUART_FIFO_RXUF_MASK));
+        temp |= (mask << 16U) & (LPUART_FIFO_TXOF_MASK | LPUART_FIFO_RXUF_MASK);
+        base->FIFO = temp;
+    }
+#endif
+    /* Status bits in STAT register */
+    /* First get the STAT register value and mask all the bits that not represent status, then OR with the status bit
+     * that is to be W1C */
+    temp       = (base->STAT & 0x3E000000UL) | mask;
+    base->STAT = temp;
+    /* If some flags still pending. */
+    if (0U != (mask & LPUART_GetStatusFlags(base)))
+    {
+        status = kStatus_LPUART_FlagCannotClearManually;
+    }
+    else
+    {
+        status = kStatus_Success;
+    }
+
+    return status;
+}
+
+/*!
+ * brief Writes to the transmitter register using a blocking method.
+ *
+ * This function polls the transmitter register, first waits for the register to be empty or TX FIFO to have room,
+ * and writes data to the transmitter buffer, then waits for the data to be sent out to bus.
+ *
+ * param base LPUART peripheral base address.
+ * param data Start address of the data to write.
+ * param length Size of the data to write.
+ * retval kStatus_LPUART_Timeout Transmission timed out and was aborted.
+ * retval kStatus_Success Successfully wrote all data.
+ */
+status_t LPUART_WriteBlocking(LPUART_Type *base, const uint8_t *data, size_t length)
+{
+    assert(NULL != data);
+
+    const uint8_t *dataAddress = data;
+    size_t transferSize        = length;
+
+#if UART_RETRY_TIMES
+    uint32_t waitTimes;
+#endif
+
+    while (0U != transferSize)
+    {
+#if UART_RETRY_TIMES
+        waitTimes = UART_RETRY_TIMES;
+        while ((0U == (base->STAT & LPUART_STAT_TDRE_MASK)) && (0U != --waitTimes))
+#else
+        while (0U == (base->STAT & LPUART_STAT_TDRE_MASK))
+#endif
+        {
+        }
+#if UART_RETRY_TIMES
+        if (0U == waitTimes)
+        {
+            return kStatus_LPUART_Timeout;
+        }
+#endif
+        base->DATA = *(dataAddress);
+        dataAddress++;
+        transferSize--;
+    }
+    /* Ensure all the data in the transmit buffer are sent out to bus. */
+#if UART_RETRY_TIMES
+    waitTimes = UART_RETRY_TIMES;
+    while ((0U == (base->STAT & LPUART_STAT_TC_MASK)) && (0U != --waitTimes))
+#else
+    while (0U == (base->STAT & LPUART_STAT_TC_MASK))
+#endif
+    {
+    }
+#if UART_RETRY_TIMES
+    if (0U == waitTimes)
+    {
+        return kStatus_LPUART_Timeout;
+    }
+#endif
+    return kStatus_Success;
+}
+
+/*!
+ * brief Reads the receiver data register using a blocking method.
+ *
+ * This function polls the receiver register, waits for the receiver register full or receiver FIFO
+ * has data, and reads data from the TX register.
+ *
+ * param base LPUART peripheral base address.
+ * param data Start address of the buffer to store the received data.
+ * param length Size of the buffer.
+ * retval kStatus_LPUART_RxHardwareOverrun Receiver overrun happened while receiving data.
+ * retval kStatus_LPUART_NoiseError Noise error happened while receiving data.
+ * retval kStatus_LPUART_FramingError Framing error happened while receiving data.
+ * retval kStatus_LPUART_ParityError Parity error happened while receiving data.
+ * retval kStatus_LPUART_Timeout Transmission timed out and was aborted.
+ * retval kStatus_Success Successfully received all data.
+ */
+status_t LPUART_ReadBlocking(LPUART_Type *base, uint8_t *data, size_t length)
+{
+    assert(NULL != data);
+
+    status_t status = kStatus_Success;
+    uint32_t statusFlag;
+    uint8_t *dataAddress = data;
+
+#if defined(FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT
+    uint32_t ctrl        = base->CTRL;
+    bool isSevenDataBits = (((ctrl & LPUART_CTRL_M7_MASK) != 0U) ||
+                            (((ctrl & LPUART_CTRL_M_MASK) == 0U) && ((ctrl & LPUART_CTRL_PE_MASK) != 0U)));
+#endif
+
+#if UART_RETRY_TIMES
+    uint32_t waitTimes;
+#endif
+
+    while (0U != (length--))
+    {
+#if UART_RETRY_TIMES
+        waitTimes = UART_RETRY_TIMES;
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+        while (0U == ((base->WATER & LPUART_WATER_RXCOUNT_MASK) >> LPUART_WATER_RXCOUNT_SHIFT))
+#else
+        while (0U == (base->STAT & LPUART_STAT_RDRF_MASK))
+#endif
+        {
+#if UART_RETRY_TIMES
+            if (0U == --waitTimes)
+            {
+                status = kStatus_LPUART_Timeout;
+                break;
+            }
+#endif
+            statusFlag = LPUART_GetStatusFlags(base);
+
+            if (0U != (statusFlag & (uint32_t)kLPUART_RxOverrunFlag))
+            {
+                status = ((kStatus_Success == LPUART_ClearStatusFlags(base, (uint32_t)kLPUART_RxOverrunFlag)) ?
+                              (kStatus_LPUART_RxHardwareOverrun) :
+                              (kStatus_LPUART_FlagCannotClearManually));
+                /* Other error flags(FE, NF, and PF) are prevented from setting once OR is set, no need to check other
+                 * error flags*/
+                break;
+            }
+
+            if (0U != (statusFlag & (uint32_t)kLPUART_ParityErrorFlag))
+            {
+                status = ((kStatus_Success == LPUART_ClearStatusFlags(base, (uint32_t)kLPUART_ParityErrorFlag)) ?
+                              (kStatus_LPUART_ParityError) :
+                              (kStatus_LPUART_FlagCannotClearManually));
+            }
+
+            if (0U != (statusFlag & (uint32_t)kLPUART_FramingErrorFlag))
+            {
+                status = ((kStatus_Success == LPUART_ClearStatusFlags(base, (uint32_t)kLPUART_FramingErrorFlag)) ?
+                              (kStatus_LPUART_FramingError) :
+                              (kStatus_LPUART_FlagCannotClearManually));
+            }
+
+            if (0U != (statusFlag & (uint32_t)kLPUART_NoiseErrorFlag))
+            {
+                status = ((kStatus_Success == LPUART_ClearStatusFlags(base, (uint32_t)kLPUART_NoiseErrorFlag)) ?
+                              (kStatus_LPUART_NoiseError) :
+                              (kStatus_LPUART_FlagCannotClearManually));
+            }
+            if (kStatus_Success != status)
+            {
+                break;
+            }
+        }
+
+        if (kStatus_Success == status)
+        {
+#if defined(FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT
+            if (isSevenDataBits)
+            {
+                *(dataAddress) = (uint8_t)(base->DATA & 0x7FU);
+                dataAddress++;
+            }
+            else
+            {
+                *(dataAddress) = (uint8_t)base->DATA;
+                dataAddress++;
+            }
+#else
+            *(dataAddress) = (uint8_t)base->DATA;
+            dataAddress++;
+#endif
+        }
+        else
+        {
+            break;
+        }
+    }
+
+    return status;
+}
+
+/*!
+ * brief Initializes the LPUART handle.
+ *
+ * This function initializes the LPUART handle, which can be used for other LPUART
+ * transactional APIs. Usually, for a specified LPUART instance,
+ * call this API once to get the initialized handle.
+ *
+ * The LPUART driver supports the "background" receiving, which means that user can set up
+ * an RX ring buffer optionally. Data received is stored into the ring buffer even when the
+ * user doesn't call the LPUART_TransferReceiveNonBlocking() API. If there is already data received
+ * in the ring buffer, the user can get the received data from the ring buffer directly.
+ * The ring buffer is disabled if passing NULL as p ringBuffer.
+ *
+ * param base LPUART peripheral base address.
+ * param handle LPUART handle pointer.
+ * param callback Callback function.
+ * param userData User data.
+ */
+void LPUART_TransferCreateHandle(LPUART_Type *base,
+                                 lpuart_handle_t *handle,
+                                 lpuart_transfer_callback_t callback,
+                                 void *userData)
+{
+    assert(NULL != handle);
+
+    uint32_t instance;
+
+#if defined(FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT
+    uint32_t ctrl        = base->CTRL;
+    bool isSevenDataBits = (((ctrl & LPUART_CTRL_M7_MASK) != 0U) ||
+                            (((ctrl & LPUART_CTRL_M_MASK) == 0U) && ((ctrl & LPUART_CTRL_PE_MASK) != 0U)));
+#endif
+
+    /* Zero the handle. */
+    (void)memset(handle, 0, sizeof(lpuart_handle_t));
+
+    /* Set the TX/RX state. */
+    handle->rxState = (uint8_t)kLPUART_RxIdle;
+    handle->txState = (uint8_t)kLPUART_TxIdle;
+
+    /* Set the callback and user data. */
+    handle->callback = callback;
+    handle->userData = userData;
+
+#if defined(FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT
+    /* Initial seven data bits flag */
+    handle->isSevenDataBits = isSevenDataBits;
+#endif
+
+    /* Get instance from peripheral base address. */
+    instance = LPUART_GetInstance(base);
+
+    /* Save the handle in global variables to support the double weak mechanism. */
+    s_lpuartHandle[instance] = handle;
+
+    s_lpuartIsr = LPUART_TransferHandleIRQ;
+
+/* Enable interrupt in NVIC. */
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+    (void)EnableIRQ(s_lpuartRxIRQ[instance]);
+    (void)EnableIRQ(s_lpuartTxIRQ[instance]);
+#else
+    (void)EnableIRQ(s_lpuartIRQ[instance]);
+#endif
+}
+
+/*!
+ * brief Sets up the RX ring buffer.
+ *
+ * This function sets up the RX ring buffer to a specific UART handle.
+ *
+ * When the RX ring buffer is used, data received is stored into the ring buffer even when
+ * the user doesn't call the UART_TransferReceiveNonBlocking() API. If there is already data received
+ * in the ring buffer, the user can get the received data from the ring buffer directly.
+ *
+ * note When using RX ring buffer, one byte is reserved for internal use. In other
+ * words, if p ringBufferSize is 32, then only 31 bytes are used for saving data.
+ *
+ * param base LPUART peripheral base address.
+ * param handle LPUART handle pointer.
+ * param ringBuffer Start address of ring buffer for background receiving. Pass NULL to disable the ring buffer.
+ * param ringBufferSize size of the ring buffer.
+ */
+void LPUART_TransferStartRingBuffer(LPUART_Type *base,
+                                    lpuart_handle_t *handle,
+                                    uint8_t *ringBuffer,
+                                    size_t ringBufferSize)
+{
+    assert(NULL != handle);
+    assert(NULL != ringBuffer);
+
+    /* Setup the ring buffer address */
+    handle->rxRingBuffer     = ringBuffer;
+    handle->rxRingBufferSize = ringBufferSize;
+    handle->rxRingBufferHead = 0U;
+    handle->rxRingBufferTail = 0U;
+
+    /* Disable and re-enable the global interrupt to protect the interrupt enable register during read-modify-wrte. */
+    uint32_t irqMask = DisableGlobalIRQ();
+    /* Enable the interrupt to accept the data when user need the ring buffer. */
+    base->CTRL |= (uint32_t)(LPUART_CTRL_RIE_MASK | LPUART_CTRL_ORIE_MASK);
+    EnableGlobalIRQ(irqMask);
+}
+
+/*!
+ * brief Aborts the background transfer and uninstalls the ring buffer.
+ *
+ * This function aborts the background transfer and uninstalls the ring buffer.
+ *
+ * param base LPUART peripheral base address.
+ * param handle LPUART handle pointer.
+ */
+void LPUART_TransferStopRingBuffer(LPUART_Type *base, lpuart_handle_t *handle)
+{
+    assert(NULL != handle);
+
+    if (handle->rxState == (uint8_t)kLPUART_RxIdle)
+    {
+        /* Disable and re-enable the global interrupt to protect the interrupt enable register during read-modify-wrte.
+         */
+        uint32_t irqMask = DisableGlobalIRQ();
+        base->CTRL &= ~(uint32_t)(LPUART_CTRL_RIE_MASK | LPUART_CTRL_ORIE_MASK);
+        EnableGlobalIRQ(irqMask);
+    }
+
+    handle->rxRingBuffer     = NULL;
+    handle->rxRingBufferSize = 0U;
+    handle->rxRingBufferHead = 0U;
+    handle->rxRingBufferTail = 0U;
+}
+
+/*!
+ * brief Transmits a buffer of data using the interrupt method.
+ *
+ * This function send data using an interrupt method. This is a non-blocking function, which
+ * returns directly without waiting for all data written to the transmitter register. When
+ * all data is written to the TX register in the ISR, the LPUART driver calls the callback
+ * function and passes the ref kStatus_LPUART_TxIdle as status parameter.
+ *
+ * note The kStatus_LPUART_TxIdle is passed to the upper layer when all data are written
+ * to the TX register. However, there is no check to ensure that all the data sent out. Before disabling the TX,
+ * check the kLPUART_TransmissionCompleteFlag to ensure that the transmit is finished.
+ *
+ * param base LPUART peripheral base address.
+ * param handle LPUART handle pointer.
+ * param xfer LPUART transfer structure, see #lpuart_transfer_t.
+ * retval kStatus_Success Successfully start the data transmission.
+ * retval kStatus_LPUART_TxBusy Previous transmission still not finished, data not all written to the TX register.
+ * retval kStatus_InvalidArgument Invalid argument.
+ */
+status_t LPUART_TransferSendNonBlocking(LPUART_Type *base, lpuart_handle_t *handle, lpuart_transfer_t *xfer)
+{
+    assert(NULL != handle);
+    assert(NULL != xfer);
+    assert(NULL != xfer->txData);
+    assert(0U != xfer->dataSize);
+
+    status_t status;
+
+    /* Return error if current TX busy. */
+    if ((uint8_t)kLPUART_TxBusy == handle->txState)
+    {
+        status = kStatus_LPUART_TxBusy;
+    }
+    else
+    {
+        handle->txData        = xfer->txData;
+        handle->txDataSize    = xfer->dataSize;
+        handle->txDataSizeAll = xfer->dataSize;
+        handle->txState       = (uint8_t)kLPUART_TxBusy;
+
+        /* Disable and re-enable the global interrupt to protect the interrupt enable register during read-modify-wrte.
+         */
+        uint32_t irqMask = DisableGlobalIRQ();
+        /* Enable transmitter interrupt. */
+        base->CTRL |= (uint32_t)LPUART_CTRL_TIE_MASK;
+        EnableGlobalIRQ(irqMask);
+
+        status = kStatus_Success;
+    }
+
+    return status;
+}
+
+/*!
+ * brief Aborts the interrupt-driven data transmit.
+ *
+ * This function aborts the interrupt driven data sending. The user can get the remainBtyes to find out
+ * how many bytes are not sent out.
+ *
+ * param base LPUART peripheral base address.
+ * param handle LPUART handle pointer.
+ */
+void LPUART_TransferAbortSend(LPUART_Type *base, lpuart_handle_t *handle)
+{
+    assert(NULL != handle);
+
+    /* Disable and re-enable the global interrupt to protect the interrupt enable register during read-modify-wrte. */
+    uint32_t irqMask = DisableGlobalIRQ();
+    base->CTRL &= ~(uint32_t)(LPUART_CTRL_TIE_MASK | LPUART_CTRL_TCIE_MASK);
+    EnableGlobalIRQ(irqMask);
+
+    handle->txDataSize = 0;
+    handle->txState    = (uint8_t)kLPUART_TxIdle;
+}
+
+/*!
+ * brief Gets the number of bytes that have been sent out to bus.
+ *
+ * This function gets the number of bytes that have been sent out to bus by an interrupt method.
+ *
+ * param base LPUART peripheral base address.
+ * param handle LPUART handle pointer.
+ * param count Send bytes count.
+ * retval kStatus_NoTransferInProgress No send in progress.
+ * retval kStatus_InvalidArgument Parameter is invalid.
+ * retval kStatus_Success Get successfully through the parameter \p count;
+ */
+status_t LPUART_TransferGetSendCount(LPUART_Type *base, lpuart_handle_t *handle, uint32_t *count)
+{
+    assert(NULL != handle);
+    assert(NULL != count);
+
+    status_t status      = kStatus_Success;
+    size_t tmptxDataSize = handle->txDataSize;
+
+    if ((uint8_t)kLPUART_TxIdle == handle->txState)
+    {
+        status = kStatus_NoTransferInProgress;
+    }
+    else
+    {
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+        *count = handle->txDataSizeAll - tmptxDataSize -
+                 ((base->WATER & LPUART_WATER_TXCOUNT_MASK) >> LPUART_WATER_TXCOUNT_SHIFT);
+#else
+        if ((base->STAT & (uint32_t)kLPUART_TxDataRegEmptyFlag) != 0U)
+        {
+            *count = handle->txDataSizeAll - tmptxDataSize;
+        }
+        else
+        {
+            *count = handle->txDataSizeAll - tmptxDataSize - 1U;
+        }
+#endif
+    }
+
+    return status;
+}
+
+/*!
+ * brief Receives a buffer of data using the interrupt method.
+ *
+ * This function receives data using an interrupt method. This is a non-blocking function
+ * which returns without waiting to ensure that all data are received.
+ * If the RX ring buffer is used and not empty, the data in the ring buffer is copied and
+ * the parameter p receivedBytes shows how many bytes are copied from the ring buffer.
+ * After copying, if the data in the ring buffer is not enough for read, the receive
+ * request is saved by the LPUART driver. When the new data arrives, the receive request
+ * is serviced first. When all data is received, the LPUART driver notifies the upper layer
+ * through a callback function and passes a status parameter ref kStatus_UART_RxIdle.
+ * For example, the upper layer needs 10 bytes but there are only 5 bytes in ring buffer.
+ * The 5 bytes are copied to xfer->data, which returns with the
+ * parameter p receivedBytes set to 5. For the remaining 5 bytes, the newly arrived data is
+ * saved from xfer->data[5]. When 5 bytes are received, the LPUART driver notifies the upper layer.
+ * If the RX ring buffer is not enabled, this function enables the RX and RX interrupt
+ * to receive data to xfer->data. When all data is received, the upper layer is notified.
+ *
+ * param base LPUART peripheral base address.
+ * param handle LPUART handle pointer.
+ * param xfer LPUART transfer structure, see #uart_transfer_t.
+ * param receivedBytes Bytes received from the ring buffer directly.
+ * retval kStatus_Success Successfully queue the transfer into the transmit queue.
+ * retval kStatus_LPUART_RxBusy Previous receive request is not finished.
+ * retval kStatus_InvalidArgument Invalid argument.
+ */
+status_t LPUART_TransferReceiveNonBlocking(LPUART_Type *base,
+                                           lpuart_handle_t *handle,
+                                           lpuart_transfer_t *xfer,
+                                           size_t *receivedBytes)
+{
+    assert(NULL != handle);
+    assert(NULL != xfer);
+    assert(NULL != xfer->rxData);
+    assert(0U != xfer->dataSize);
+
+    uint32_t i;
+    status_t status;
+    uint32_t irqMask;
+    /* How many bytes to copy from ring buffer to user memory. */
+    size_t bytesToCopy = 0U;
+    /* How many bytes to receive. */
+    size_t bytesToReceive;
+    /* How many bytes currently have received. */
+    size_t bytesCurrentReceived;
+
+    /* How to get data:
+       1. If RX ring buffer is not enabled, then save xfer->data and xfer->dataSize
+          to lpuart handle, enable interrupt to store received data to xfer->data. When
+          all data received, trigger callback.
+       2. If RX ring buffer is enabled and not empty, get data from ring buffer first.
+          If there are enough data in ring buffer, copy them to xfer->data and return.
+          If there are not enough data in ring buffer, copy all of them to xfer->data,
+          save the xfer->data remained empty space to lpuart handle, receive data
+          to this empty space and trigger callback when finished. */
+
+    if ((uint8_t)kLPUART_RxBusy == handle->rxState)
+    {
+        status = kStatus_LPUART_RxBusy;
+    }
+    else
+    {
+        bytesToReceive       = xfer->dataSize;
+        bytesCurrentReceived = 0;
+
+        /* If RX ring buffer is used. */
+        if (NULL != handle->rxRingBuffer)
+        {
+            /* Disable and re-enable the global interrupt to protect the interrupt enable register during
+             * read-modify-wrte. */
+            irqMask = DisableGlobalIRQ();
+            /* Disable LPUART RX IRQ, protect ring buffer. */
+            base->CTRL &= ~(uint32_t)(LPUART_CTRL_RIE_MASK | LPUART_CTRL_ORIE_MASK);
+            EnableGlobalIRQ(irqMask);
+
+            /* How many bytes in RX ring buffer currently. */
+            bytesToCopy = LPUART_TransferGetRxRingBufferLength(base, handle);
+
+            if (0U != bytesToCopy)
+            {
+                bytesToCopy = MIN(bytesToReceive, bytesToCopy);
+
+                bytesToReceive -= bytesToCopy;
+
+                /* Copy data from ring buffer to user memory. */
+                for (i = 0U; i < bytesToCopy; i++)
+                {
+                    xfer->rxData[bytesCurrentReceived] = handle->rxRingBuffer[handle->rxRingBufferTail];
+                    bytesCurrentReceived++;
+
+                    /* Wrap to 0. Not use modulo (%) because it might be large and slow. */
+                    if (((uint32_t)handle->rxRingBufferTail + 1U) == handle->rxRingBufferSize)
+                    {
+                        handle->rxRingBufferTail = 0U;
+                    }
+                    else
+                    {
+                        handle->rxRingBufferTail++;
+                    }
+                }
+            }
+
+            /* If ring buffer does not have enough data, still need to read more data. */
+            if (0U != bytesToReceive)
+            {
+                /* No data in ring buffer, save the request to LPUART handle. */
+                handle->rxData        = &xfer->rxData[bytesCurrentReceived];
+                handle->rxDataSize    = bytesToReceive;
+                handle->rxDataSizeAll = xfer->dataSize;
+                handle->rxState       = (uint8_t)kLPUART_RxBusy;
+            }
+
+            /* Disable and re-enable the global interrupt to protect the interrupt enable register during
+             * read-modify-wrte. */
+            irqMask = DisableGlobalIRQ();
+            /* Re-enable LPUART RX IRQ. */
+            base->CTRL |= (uint32_t)(LPUART_CTRL_RIE_MASK | LPUART_CTRL_ORIE_MASK);
+            EnableGlobalIRQ(irqMask);
+
+            /* Call user callback since all data are received. */
+            if (0U == bytesToReceive)
+            {
+                if (NULL != handle->callback)
+                {
+                    handle->callback(base, handle, kStatus_LPUART_RxIdle, handle->userData);
+                }
+            }
+        }
+        /* Ring buffer not used. */
+        else
+        {
+            handle->rxData        = &xfer->rxData[bytesCurrentReceived];
+            handle->rxDataSize    = bytesToReceive;
+            handle->rxDataSizeAll = bytesToReceive;
+            handle->rxState       = (uint8_t)kLPUART_RxBusy;
+
+            /* Disable and re-enable the global interrupt to protect the interrupt enable register during
+             * read-modify-wrte. */
+            irqMask = DisableGlobalIRQ();
+            /* Enable RX interrupt. */
+            base->CTRL |= (uint32_t)(LPUART_CTRL_RIE_MASK | LPUART_CTRL_ILIE_MASK | LPUART_CTRL_ORIE_MASK);
+            EnableGlobalIRQ(irqMask);
+        }
+
+        /* Return the how many bytes have read. */
+        if (NULL != receivedBytes)
+        {
+            *receivedBytes = bytesCurrentReceived;
+        }
+
+        status = kStatus_Success;
+    }
+
+    return status;
+}
+
+/*!
+ * brief Aborts the interrupt-driven data receiving.
+ *
+ * This function aborts the interrupt-driven data receiving. The user can get the remainBytes to find out
+ * how many bytes not received yet.
+ *
+ * param base LPUART peripheral base address.
+ * param handle LPUART handle pointer.
+ */
+void LPUART_TransferAbortReceive(LPUART_Type *base, lpuart_handle_t *handle)
+{
+    assert(NULL != handle);
+
+    /* Only abort the receive to handle->rxData, the RX ring buffer is still working. */
+    if (NULL == handle->rxRingBuffer)
+    {
+        /* Disable and re-enable the global interrupt to protect the interrupt enable register during read-modify-wrte.
+         */
+        uint32_t irqMask = DisableGlobalIRQ();
+        /* Disable RX interrupt. */
+        base->CTRL &= ~(uint32_t)(LPUART_CTRL_RIE_MASK | LPUART_CTRL_ILIE_MASK | LPUART_CTRL_ORIE_MASK);
+        EnableGlobalIRQ(irqMask);
+    }
+
+    handle->rxDataSize = 0U;
+    handle->rxState    = (uint8_t)kLPUART_RxIdle;
+}
+
+/*!
+ * brief Gets the number of bytes that have been received.
+ *
+ * This function gets the number of bytes that have been received.
+ *
+ * param base LPUART peripheral base address.
+ * param handle LPUART handle pointer.
+ * param count Receive bytes count.
+ * retval kStatus_NoTransferInProgress No receive in progress.
+ * retval kStatus_InvalidArgument Parameter is invalid.
+ * retval kStatus_Success Get successfully through the parameter \p count;
+ */
+status_t LPUART_TransferGetReceiveCount(LPUART_Type *base, lpuart_handle_t *handle, uint32_t *count)
+{
+    assert(NULL != handle);
+    assert(NULL != count);
+
+    status_t status      = kStatus_Success;
+    size_t tmprxDataSize = handle->rxDataSize;
+
+    if ((uint8_t)kLPUART_RxIdle == handle->rxState)
+    {
+        status = kStatus_NoTransferInProgress;
+    }
+    else
+    {
+        *count = handle->rxDataSizeAll - tmprxDataSize;
+    }
+
+    return status;
+}
+
+/*!
+ * brief LPUART IRQ handle function.
+ *
+ * This function handles the LPUART transmit and receive IRQ request.
+ *
+ * param base LPUART peripheral base address.
+ * param irqHandle LPUART handle pointer.
+ */
+void LPUART_TransferHandleIRQ(LPUART_Type *base, void *irqHandle)
+{
+    assert(NULL != irqHandle);
+
+    uint8_t count;
+    uint8_t tempCount;
+    uint32_t status            = LPUART_GetStatusFlags(base);
+    uint32_t enabledInterrupts = LPUART_GetEnabledInterrupts(base);
+    uint16_t tpmRxRingBufferHead;
+    uint32_t tpmData;
+    uint32_t irqMask;
+    lpuart_handle_t *handle = (lpuart_handle_t *)irqHandle;
+
+    /* If RX overrun. */
+    if ((uint32_t)kLPUART_RxOverrunFlag == ((uint32_t)kLPUART_RxOverrunFlag & status))
+    {
+        /* Clear overrun flag, otherwise the RX does not work. */
+        base->STAT = ((base->STAT & 0x3FE00000U) | LPUART_STAT_OR_MASK);
+
+        /* Trigger callback. */
+        if (NULL != (handle->callback))
+        {
+            handle->callback(base, handle, kStatus_LPUART_RxHardwareOverrun, handle->userData);
+        }
+    }
+
+    /* If IDLE flag is set and the IDLE interrupt is enabled. */
+    if ((0U != ((uint32_t)kLPUART_IdleLineFlag & status)) &&
+        (0U != ((uint32_t)kLPUART_IdleLineInterruptEnable & enabledInterrupts)))
+    {
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+        count = ((uint8_t)((base->WATER & LPUART_WATER_RXCOUNT_MASK) >> LPUART_WATER_RXCOUNT_SHIFT));
+
+        while ((0U != handle->rxDataSize) && (0U != count))
+        {
+            tempCount = (uint8_t)MIN(handle->rxDataSize, count);
+
+            /* Using non block API to read the data from the registers. */
+            LPUART_ReadNonBlocking(base, handle->rxData, tempCount);
+            handle->rxData = &handle->rxData[tempCount];
+            handle->rxDataSize -= tempCount;
+            count -= tempCount;
+
+            /* If rxDataSize is 0, invoke rx idle callback.*/
+            if (0U == (handle->rxDataSize))
+            {
+                handle->rxState = (uint8_t)kLPUART_RxIdle;
+
+                if (NULL != handle->callback)
+                {
+                    handle->callback(base, handle, kStatus_LPUART_RxIdle, handle->userData);
+                }
+            }
+        }
+#endif
+        /* Clear IDLE flag.*/
+        base->STAT = ((base->STAT & 0x3FE00000U) | LPUART_STAT_IDLE_MASK);
+
+        /* If rxDataSize is 0, disable rx ready, overrun and idle line interrupt.*/
+        if (0U == handle->rxDataSize)
+        {
+            /* Disable and re-enable the global interrupt to protect the interrupt enable register during
+             * read-modify-wrte. */
+            irqMask = DisableGlobalIRQ();
+            base->CTRL &= ~(uint32_t)(LPUART_CTRL_RIE_MASK | LPUART_CTRL_ILIE_MASK | LPUART_CTRL_ORIE_MASK);
+            EnableGlobalIRQ(irqMask);
+        }
+        /* Invoke callback if callback is not NULL and rxDataSize is not 0. */
+        else if (NULL != handle->callback)
+        {
+            handle->callback(base, handle, kStatus_LPUART_IdleLineDetected, handle->userData);
+        }
+        else
+        {
+            /* Avoid MISRA 15.7 */
+        }
+    }
+    /* Receive data register full */
+    if ((0U != ((uint32_t)kLPUART_RxDataRegFullFlag & status)) &&
+        (0U != ((uint32_t)kLPUART_RxDataRegFullInterruptEnable & enabledInterrupts)))
+    {
+        /* Get the size that can be stored into buffer for this interrupt. */
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+        count = ((uint8_t)((base->WATER & LPUART_WATER_RXCOUNT_MASK) >> LPUART_WATER_RXCOUNT_SHIFT));
+#else
+        count = 1;
+#endif
+
+        /* If handle->rxDataSize is not 0, first save data to handle->rxData. */
+        while ((0U != handle->rxDataSize) && (0U != count))
+        {
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+            tempCount = (uint8_t)MIN(handle->rxDataSize, count);
+#else
+            tempCount = 1;
+#endif
+
+            /* Using non block API to read the data from the registers. */
+            LPUART_ReadNonBlocking(base, handle->rxData, tempCount);
+            handle->rxData = &handle->rxData[tempCount];
+            handle->rxDataSize -= tempCount;
+            count -= tempCount;
+
+            /* If all the data required for upper layer is ready, trigger callback. */
+            if (0U == handle->rxDataSize)
+            {
+                handle->rxState = (uint8_t)kLPUART_RxIdle;
+
+                if (NULL != handle->callback)
+                {
+                    handle->callback(base, handle, kStatus_LPUART_RxIdle, handle->userData);
+                }
+            }
+        }
+
+        /* If use RX ring buffer, receive data to ring buffer. */
+        if (NULL != handle->rxRingBuffer)
+        {
+            while (0U != count--)
+            {
+                /* If RX ring buffer is full, trigger callback to notify over run. */
+                if (LPUART_TransferIsRxRingBufferFull(base, handle))
+                {
+                    if (NULL != handle->callback)
+                    {
+                        handle->callback(base, handle, kStatus_LPUART_RxRingBufferOverrun, handle->userData);
+                    }
+                }
+
+                /* If ring buffer is still full after callback function, the oldest data is overridden. */
+                if (LPUART_TransferIsRxRingBufferFull(base, handle))
+                {
+                    /* Increase handle->rxRingBufferTail to make room for new data. */
+                    if (((uint32_t)handle->rxRingBufferTail + 1U) == handle->rxRingBufferSize)
+                    {
+                        handle->rxRingBufferTail = 0U;
+                    }
+                    else
+                    {
+                        handle->rxRingBufferTail++;
+                    }
+                }
+
+                /* Read data. */
+                tpmRxRingBufferHead = handle->rxRingBufferHead;
+                tpmData             = base->DATA;
+#if defined(FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT
+                if (handle->isSevenDataBits)
+                {
+                    handle->rxRingBuffer[tpmRxRingBufferHead] = (uint8_t)(tpmData & 0x7FU);
+                }
+                else
+                {
+                    handle->rxRingBuffer[tpmRxRingBufferHead] = (uint8_t)tpmData;
+                }
+#else
+                handle->rxRingBuffer[tpmRxRingBufferHead] = (uint8_t)tpmData;
+#endif
+
+                /* Increase handle->rxRingBufferHead. */
+                if (((uint32_t)handle->rxRingBufferHead + 1U) == handle->rxRingBufferSize)
+                {
+                    handle->rxRingBufferHead = 0U;
+                }
+                else
+                {
+                    handle->rxRingBufferHead++;
+                }
+            }
+        }
+        /* If no receive requst pending, stop RX interrupt. */
+        else if (0U == handle->rxDataSize)
+        {
+            /* Disable and re-enable the global interrupt to protect the interrupt enable register during
+             * read-modify-wrte. */
+            irqMask = DisableGlobalIRQ();
+            base->CTRL &= ~(uint32_t)(LPUART_CTRL_RIE_MASK | LPUART_CTRL_ORIE_MASK | LPUART_CTRL_ILIE_MASK);
+            EnableGlobalIRQ(irqMask);
+        }
+        else
+        {
+        }
+    }
+
+    /* Send data register empty and the interrupt is enabled. */
+    if ((0U != ((uint32_t)kLPUART_TxDataRegEmptyFlag & status)) &&
+        (0U != ((uint32_t)kLPUART_TxDataRegEmptyInterruptEnable & enabledInterrupts)))
+    {
+/* Get the bytes that available at this moment. */
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+        count = (uint8_t)FSL_FEATURE_LPUART_FIFO_SIZEn(base) -
+                (uint8_t)((base->WATER & LPUART_WATER_TXCOUNT_MASK) >> LPUART_WATER_TXCOUNT_SHIFT);
+#else
+        count = 1;
+#endif
+
+        while ((0U != handle->txDataSize) && (0U != count))
+        {
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+            tempCount = (uint8_t)MIN(handle->txDataSize, count);
+#else
+            tempCount = 1;
+#endif
+
+            /* Using non block API to write the data to the registers. */
+            LPUART_WriteNonBlocking(base, handle->txData, tempCount);
+            handle->txData = &handle->txData[tempCount];
+            handle->txDataSize -= tempCount;
+            count -= tempCount;
+
+            /* If all the data are written to data register, notify user with the callback, then TX finished. */
+            if (0U == handle->txDataSize)
+            {
+                /* Disable and re-enable the global interrupt to protect the interrupt enable register during
+                 * read-modify-wrte. */
+                irqMask = DisableGlobalIRQ();
+                /* Disable TX register empty interrupt and enable transmission completion interrupt. */
+                base->CTRL = (base->CTRL & ~LPUART_CTRL_TIE_MASK) | LPUART_CTRL_TCIE_MASK;
+                EnableGlobalIRQ(irqMask);
+            }
+        }
+    }
+
+    /* Transmission complete and the interrupt is enabled. */
+    if ((0U != ((uint32_t)kLPUART_TransmissionCompleteFlag & status)) &&
+        (0U != ((uint32_t)kLPUART_TransmissionCompleteInterruptEnable & enabledInterrupts)))
+    {
+        /* Set txState to idle only when all data has been sent out to bus. */
+        handle->txState = (uint8_t)kLPUART_TxIdle;
+
+        /* Disable and re-enable the global interrupt to protect the interrupt enable register during read-modify-wrte.
+         */
+        irqMask = DisableGlobalIRQ();
+        /* Disable transmission complete interrupt. */
+        base->CTRL &= ~(uint32_t)LPUART_CTRL_TCIE_MASK;
+        EnableGlobalIRQ(irqMask);
+
+        /* Trigger callback. */
+        if (NULL != handle->callback)
+        {
+            handle->callback(base, handle, kStatus_LPUART_TxIdle, handle->userData);
+        }
+    }
+}
+
+/*!
+ * brief LPUART Error IRQ handle function.
+ *
+ * This function handles the LPUART error IRQ request.
+ *
+ * param base LPUART peripheral base address.
+ * param irqHandle LPUART handle pointer.
+ */
+void LPUART_TransferHandleErrorIRQ(LPUART_Type *base, void *irqHandle)
+{
+    /* To be implemented by User. */
+}
+#if defined(FSL_FEATURE_LPUART_HAS_SHARED_IRQ0_IRQ1) && FSL_FEATURE_LPUART_HAS_SHARED_IRQ0_IRQ1
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART0_LPUART1_RX_DriverIRQHandler(void);
+void LPUART0_LPUART1_RX_DriverIRQHandler(void)
+{
+    /* If handle is registered, treat the transfer function is enabled. */
+    if (NULL != s_lpuartHandle[0])
+    {
+        s_lpuartIsr(LPUART0, s_lpuartHandle[0]);
+    }
+    if (NULL != s_lpuartHandle[1])
+    {
+        s_lpuartIsr(LPUART1, s_lpuartHandle[1]);
+    }
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART0_LPUART1_TX_DriverIRQHandler(void);
+void LPUART0_LPUART1_TX_DriverIRQHandler(void)
+{
+    /* If handle is registered, treat the transfer function is enabled. */
+    if (NULL != s_lpuartHandle[0])
+    {
+        s_lpuartIsr(LPUART0, s_lpuartHandle[0]);
+    }
+    if (NULL != s_lpuartHandle[1])
+    {
+        s_lpuartIsr(LPUART1, s_lpuartHandle[1]);
+    }
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART0_LPUART1_DriverIRQHandler(void);
+void LPUART0_LPUART1_DriverIRQHandler(void)
+{
+    /* If handle is registered, treat the transfer function is enabled. */
+    if (NULL != s_lpuartHandle[0])
+    {
+        s_lpuartIsr(LPUART0, s_lpuartHandle[0]);
+    }
+    if (NULL != s_lpuartHandle[1])
+    {
+        s_lpuartIsr(LPUART1, s_lpuartHandle[1]);
+    }
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+
+#if defined(LPUART0)
+#if !(defined(FSL_FEATURE_LPUART_HAS_SHARED_IRQ0_IRQ1) && FSL_FEATURE_LPUART_HAS_SHARED_IRQ0_IRQ1)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART0_TX_DriverIRQHandler(void);
+void LPUART0_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART0, s_lpuartHandle[0]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART0_RX_DriverIRQHandler(void);
+void LPUART0_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART0, s_lpuartHandle[0]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART0_DriverIRQHandler(void);
+void LPUART0_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART0, s_lpuartHandle[0]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+#endif
+
+#if defined(LPUART1)
+#if !(defined(FSL_FEATURE_LPUART_HAS_SHARED_IRQ0_IRQ1) && FSL_FEATURE_LPUART_HAS_SHARED_IRQ0_IRQ1)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART1_TX_DriverIRQHandler(void);
+void LPUART1_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART1, s_lpuartHandle[1]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART1_RX_DriverIRQHandler(void);
+void LPUART1_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART1, s_lpuartHandle[1]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART1_DriverIRQHandler(void);
+void LPUART1_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART1, s_lpuartHandle[1]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+#endif
+
+#if defined(LPUART2)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART2_TX_DriverIRQHandler(void);
+void LPUART2_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART2, s_lpuartHandle[2]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART2_RX_DriverIRQHandler(void);
+void LPUART2_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART2, s_lpuartHandle[2]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART2_DriverIRQHandler(void);
+void LPUART2_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART2, s_lpuartHandle[2]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+
+#if defined(LPUART3)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART3_TX_DriverIRQHandler(void);
+void LPUART3_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART3, s_lpuartHandle[3]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART3_RX_DriverIRQHandler(void);
+void LPUART3_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART3, s_lpuartHandle[3]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART3_DriverIRQHandler(void);
+void LPUART3_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART3, s_lpuartHandle[3]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+
+#if defined(LPUART4)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART4_TX_DriverIRQHandler(void);
+void LPUART4_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART4, s_lpuartHandle[4]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART4_RX_DriverIRQHandler(void);
+void LPUART4_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART4, s_lpuartHandle[4]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART4_DriverIRQHandler(void);
+void LPUART4_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART4, s_lpuartHandle[4]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+
+#if defined(LPUART5)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART5_TX_DriverIRQHandler(void);
+void LPUART5_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART5, s_lpuartHandle[5]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART5_RX_DriverIRQHandler(void);
+void LPUART5_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART5, s_lpuartHandle[5]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART5_DriverIRQHandler(void);
+void LPUART5_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART5, s_lpuartHandle[5]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+
+#if defined(LPUART6)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART6_TX_DriverIRQHandler(void);
+void LPUART6_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART6, s_lpuartHandle[6]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART6_RX_DriverIRQHandler(void);
+void LPUART6_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART6, s_lpuartHandle[6]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART6_DriverIRQHandler(void);
+void LPUART6_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART6, s_lpuartHandle[6]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+
+#if defined(LPUART7)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART7_TX_DriverIRQHandler(void);
+void LPUART7_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART7, s_lpuartHandle[7]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART7_RX_DriverIRQHandler(void);
+void LPUART7_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART7, s_lpuartHandle[7]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART7_DriverIRQHandler(void);
+void LPUART7_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART7, s_lpuartHandle[7]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+
+#if defined(LPUART8)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART8_TX_DriverIRQHandler(void);
+void LPUART8_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART8, s_lpuartHandle[8]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART8_RX_DriverIRQHandler(void);
+void LPUART8_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART8, s_lpuartHandle[8]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART8_DriverIRQHandler(void);
+void LPUART8_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART8, s_lpuartHandle[8]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+
+#if defined(LPUART9)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART9_TX_DriverIRQHandler(void);
+void LPUART9_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART9, s_lpuartHandle[9]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART9_RX_DriverIRQHandler(void);
+void LPUART9_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART9, s_lpuartHandle[9]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART9_DriverIRQHandler(void);
+void LPUART9_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART9, s_lpuartHandle[9]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+
+#if defined(LPUART10)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART10_TX_DriverIRQHandler(void);
+void LPUART10_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART10, s_lpuartHandle[10]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART10_RX_DriverIRQHandler(void);
+void LPUART10_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART10, s_lpuartHandle[10]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART10_DriverIRQHandler(void);
+void LPUART10_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART10, s_lpuartHandle[10]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+
+#if defined(LPUART11)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART11_TX_DriverIRQHandler(void);
+void LPUART11_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART11, s_lpuartHandle[11]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART11_RX_DriverIRQHandler(void);
+void LPUART11_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART11, s_lpuartHandle[11]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART11_DriverIRQHandler(void);
+void LPUART11_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART11, s_lpuartHandle[11]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+
+#if defined(LPUART12)
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+void LPUART12_TX_DriverIRQHandler(void);
+void LPUART12_TX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART12, s_lpuartHandle[12]);
+    SDK_ISR_EXIT_BARRIER;
+}
+void LPUART12_RX_DriverIRQHandler(void);
+void LPUART12_RX_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART12, s_lpuartHandle[12]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#else
+void LPUART12_DriverIRQHandler(void);
+void LPUART12_DriverIRQHandler(void)
+{
+    s_lpuartIsr(LPUART12, s_lpuartHandle[12]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+#endif
+
+#if defined(CM4_0__LPUART)
+void M4_0_LPUART_DriverIRQHandler(void);
+void M4_0_LPUART_DriverIRQHandler(void)
+{
+    s_lpuartIsr(CM4_0__LPUART, s_lpuartHandle[LPUART_GetInstance(CM4_0__LPUART)]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+
+#if defined(CM4_1__LPUART)
+void M4_1_LPUART_DriverIRQHandler(void);
+void M4_1_LPUART_DriverIRQHandler(void)
+{
+    s_lpuartIsr(CM4_1__LPUART, s_lpuartHandle[LPUART_GetInstance(CM4_1__LPUART)]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+
+#if defined(CM4__LPUART)
+void M4_LPUART_DriverIRQHandler(void);
+void M4_LPUART_DriverIRQHandler(void)
+{
+    s_lpuartIsr(CM4__LPUART, s_lpuartHandle[LPUART_GetInstance(CM4__LPUART)]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+
+#if defined(DMA__LPUART0)
+void DMA_UART0_INT_DriverIRQHandler(void);
+void DMA_UART0_INT_DriverIRQHandler(void)
+{
+    s_lpuartIsr(DMA__LPUART0, s_lpuartHandle[LPUART_GetInstance(DMA__LPUART0)]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+
+#if defined(DMA__LPUART1)
+void DMA_UART1_INT_DriverIRQHandler(void);
+void DMA_UART1_INT_DriverIRQHandler(void)
+{
+    s_lpuartIsr(DMA__LPUART1, s_lpuartHandle[LPUART_GetInstance(DMA__LPUART1)]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+
+#if defined(DMA__LPUART2)
+void DMA_UART2_INT_DriverIRQHandler(void);
+void DMA_UART2_INT_DriverIRQHandler(void)
+{
+    s_lpuartIsr(DMA__LPUART2, s_lpuartHandle[LPUART_GetInstance(DMA__LPUART2)]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+
+#if defined(DMA__LPUART3)
+void DMA_UART3_INT_DriverIRQHandler(void);
+void DMA_UART3_INT_DriverIRQHandler(void)
+{
+    s_lpuartIsr(DMA__LPUART3, s_lpuartHandle[LPUART_GetInstance(DMA__LPUART3)]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+
+#if defined(DMA__LPUART4)
+void DMA_UART4_INT_DriverIRQHandler(void);
+void DMA_UART4_INT_DriverIRQHandler(void)
+{
+    s_lpuartIsr(DMA__LPUART4, s_lpuartHandle[LPUART_GetInstance(DMA__LPUART4)]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+
+#if defined(ADMA__LPUART0)
+void ADMA_UART0_INT_DriverIRQHandler(void);
+void ADMA_UART0_INT_DriverIRQHandler(void)
+{
+    s_lpuartIsr(ADMA__LPUART0, s_lpuartHandle[LPUART_GetInstance(ADMA__LPUART0)]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+
+#if defined(ADMA__LPUART1)
+void ADMA_UART1_INT_DriverIRQHandler(void);
+void ADMA_UART1_INT_DriverIRQHandler(void)
+{
+    s_lpuartIsr(ADMA__LPUART1, s_lpuartHandle[LPUART_GetInstance(ADMA__LPUART1)]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+
+#if defined(ADMA__LPUART2)
+void ADMA_UART2_INT_DriverIRQHandler(void);
+void ADMA_UART2_INT_DriverIRQHandler(void)
+{
+    s_lpuartIsr(ADMA__LPUART2, s_lpuartHandle[LPUART_GetInstance(ADMA__LPUART2)]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
+
+#if defined(ADMA__LPUART3)
+void ADMA_UART3_INT_DriverIRQHandler(void);
+void ADMA_UART3_INT_DriverIRQHandler(void)
+{
+    s_lpuartIsr(ADMA__LPUART3, s_lpuartHandle[LPUART_GetInstance(ADMA__LPUART3)]);
+    SDK_ISR_EXIT_BARRIER;
+}
+#endif
diff --git a/ADIS_tinyK22_SplitFlap/drivers/fsl_lpuart.h b/ADIS_tinyK22_SplitFlap/drivers/fsl_lpuart.h
new file mode 100644
index 0000000..cbe43dd
--- /dev/null
+++ b/ADIS_tinyK22_SplitFlap/drivers/fsl_lpuart.h
@@ -0,0 +1,1064 @@
+/*
+ * Copyright (c) 2015-2016, Freescale Semiconductor, Inc.
+ * Copyright 2016-2022 NXP
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#ifndef _FSL_LPUART_H_
+#define _FSL_LPUART_H_
+
+#include "fsl_common.h"
+
+/*!
+ * @addtogroup lpuart_driver
+ * @{
+ */
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+
+/*! @name Driver version */
+/*@{*/
+/*! @brief LPUART driver version. */
+#define FSL_LPUART_DRIVER_VERSION (MAKE_VERSION(2, 5, 3))
+/*@}*/
+
+/*! @brief Retry times for waiting flag. */
+#ifndef UART_RETRY_TIMES
+#define UART_RETRY_TIMES 0U /* Defining to zero means to keep waiting for the flag until it is assert/deassert. */
+#endif
+
+/*! @brief Error codes for the LPUART driver. */
+enum
+{
+    kStatus_LPUART_TxBusy                  = MAKE_STATUS(kStatusGroup_LPUART, 0), /*!< TX busy */
+    kStatus_LPUART_RxBusy                  = MAKE_STATUS(kStatusGroup_LPUART, 1), /*!< RX busy */
+    kStatus_LPUART_TxIdle                  = MAKE_STATUS(kStatusGroup_LPUART, 2), /*!< LPUART transmitter is idle. */
+    kStatus_LPUART_RxIdle                  = MAKE_STATUS(kStatusGroup_LPUART, 3), /*!< LPUART receiver is idle. */
+    kStatus_LPUART_TxWatermarkTooLarge     = MAKE_STATUS(kStatusGroup_LPUART, 4), /*!< TX FIFO watermark too large  */
+    kStatus_LPUART_RxWatermarkTooLarge     = MAKE_STATUS(kStatusGroup_LPUART, 5), /*!< RX FIFO watermark too large  */
+    kStatus_LPUART_FlagCannotClearManually = MAKE_STATUS(kStatusGroup_LPUART, 6), /*!< Some flag can't manually clear */
+    kStatus_LPUART_Error                   = MAKE_STATUS(kStatusGroup_LPUART, 7), /*!< Error happens on LPUART. */
+    kStatus_LPUART_RxRingBufferOverrun =
+        MAKE_STATUS(kStatusGroup_LPUART, 8), /*!< LPUART RX software ring buffer overrun. */
+    kStatus_LPUART_RxHardwareOverrun = MAKE_STATUS(kStatusGroup_LPUART, 9),  /*!< LPUART RX receiver overrun. */
+    kStatus_LPUART_NoiseError        = MAKE_STATUS(kStatusGroup_LPUART, 10), /*!< LPUART noise error. */
+    kStatus_LPUART_FramingError      = MAKE_STATUS(kStatusGroup_LPUART, 11), /*!< LPUART framing error. */
+    kStatus_LPUART_ParityError       = MAKE_STATUS(kStatusGroup_LPUART, 12), /*!< LPUART parity error. */
+    kStatus_LPUART_BaudrateNotSupport =
+        MAKE_STATUS(kStatusGroup_LPUART, 13), /*!< Baudrate is not support in current clock source */
+    kStatus_LPUART_IdleLineDetected = MAKE_STATUS(kStatusGroup_LPUART, 14), /*!< IDLE flag. */
+    kStatus_LPUART_Timeout          = MAKE_STATUS(kStatusGroup_LPUART, 15), /*!< LPUART times out. */
+};
+
+/*! @brief LPUART parity mode. */
+typedef enum _lpuart_parity_mode
+{
+    kLPUART_ParityDisabled = 0x0U, /*!< Parity disabled */
+    kLPUART_ParityEven     = 0x2U, /*!< Parity enabled, type even, bit setting: PE|PT = 10 */
+    kLPUART_ParityOdd      = 0x3U, /*!< Parity enabled, type odd,  bit setting: PE|PT = 11 */
+} lpuart_parity_mode_t;
+
+/*! @brief LPUART data bits count. */
+typedef enum _lpuart_data_bits
+{
+    kLPUART_EightDataBits = 0x0U, /*!< Eight data bit */
+#if defined(FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT
+    kLPUART_SevenDataBits = 0x1U, /*!< Seven data bit */
+#endif
+} lpuart_data_bits_t;
+
+/*! @brief LPUART stop bit count. */
+typedef enum _lpuart_stop_bit_count
+{
+    kLPUART_OneStopBit = 0U, /*!< One stop bit */
+    kLPUART_TwoStopBit = 1U, /*!< Two stop bits */
+} lpuart_stop_bit_count_t;
+
+#if defined(FSL_FEATURE_LPUART_HAS_MODEM_SUPPORT) && FSL_FEATURE_LPUART_HAS_MODEM_SUPPORT
+/*! @brief LPUART transmit CTS source. */
+typedef enum _lpuart_transmit_cts_source
+{
+    kLPUART_CtsSourcePin         = 0U, /*!< CTS resource is the LPUART_CTS pin. */
+    kLPUART_CtsSourceMatchResult = 1U, /*!< CTS resource is the match result. */
+} lpuart_transmit_cts_source_t;
+
+/*! @brief LPUART transmit CTS configure. */
+typedef enum _lpuart_transmit_cts_config
+{
+    kLPUART_CtsSampleAtStart = 0U, /*!< CTS input is sampled at the start of each character. */
+    kLPUART_CtsSampleAtIdle  = 1U, /*!< CTS input is sampled when the transmitter is idle */
+} lpuart_transmit_cts_config_t;
+#endif
+
+/*! @brief LPUART idle flag type defines when the receiver starts counting. */
+typedef enum _lpuart_idle_type_select
+{
+    kLPUART_IdleTypeStartBit = 0U, /*!< Start counting after a valid start bit. */
+    kLPUART_IdleTypeStopBit  = 1U, /*!< Start counting after a stop bit. */
+} lpuart_idle_type_select_t;
+
+/*! @brief LPUART idle detected configuration.
+ *  This structure defines the number of idle characters that must be received before
+ *  the IDLE flag is set.
+ */
+typedef enum _lpuart_idle_config
+{
+    kLPUART_IdleCharacter1   = 0U, /*!< the number of idle characters. */
+    kLPUART_IdleCharacter2   = 1U, /*!< the number of idle characters. */
+    kLPUART_IdleCharacter4   = 2U, /*!< the number of idle characters. */
+    kLPUART_IdleCharacter8   = 3U, /*!< the number of idle characters. */
+    kLPUART_IdleCharacter16  = 4U, /*!< the number of idle characters. */
+    kLPUART_IdleCharacter32  = 5U, /*!< the number of idle characters. */
+    kLPUART_IdleCharacter64  = 6U, /*!< the number of idle characters. */
+    kLPUART_IdleCharacter128 = 7U, /*!< the number of idle characters. */
+} lpuart_idle_config_t;
+
+/*!
+ * @brief LPUART interrupt configuration structure, default settings all disabled.
+ *
+ * This structure contains the settings for all LPUART interrupt configurations.
+ */
+enum _lpuart_interrupt_enable
+{
+#if defined(FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT) && FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT
+    kLPUART_LinBreakInterruptEnable = (LPUART_BAUD_LBKDIE_MASK >> 8U), /*!< LIN break detect. bit 7 */
+#endif
+    kLPUART_RxActiveEdgeInterruptEnable         = (LPUART_BAUD_RXEDGIE_MASK >> 8U), /*!< Receive Active Edge. bit 6 */
+    kLPUART_TxDataRegEmptyInterruptEnable       = (LPUART_CTRL_TIE_MASK),  /*!< Transmit data register empty. bit 23 */
+    kLPUART_TransmissionCompleteInterruptEnable = (LPUART_CTRL_TCIE_MASK), /*!< Transmission complete. bit 22 */
+    kLPUART_RxDataRegFullInterruptEnable        = (LPUART_CTRL_RIE_MASK),  /*!< Receiver data register full. bit 21 */
+    kLPUART_IdleLineInterruptEnable             = (LPUART_CTRL_ILIE_MASK), /*!< Idle line. bit 20 */
+    kLPUART_RxOverrunInterruptEnable            = (LPUART_CTRL_ORIE_MASK), /*!< Receiver Overrun. bit 27 */
+    kLPUART_NoiseErrorInterruptEnable           = (LPUART_CTRL_NEIE_MASK), /*!< Noise error flag. bit 26 */
+    kLPUART_FramingErrorInterruptEnable         = (LPUART_CTRL_FEIE_MASK), /*!< Framing error flag. bit 25 */
+    kLPUART_ParityErrorInterruptEnable          = (LPUART_CTRL_PEIE_MASK), /*!< Parity error flag. bit 24 */
+#if defined(FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING) && FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING
+    kLPUART_Match1InterruptEnable = (LPUART_CTRL_MA1IE_MASK), /*!< Parity error flag. bit 15 */
+    kLPUART_Match2InterruptEnable = (LPUART_CTRL_MA2IE_MASK), /*!< Parity error flag. bit 14 */
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+    kLPUART_TxFifoOverflowInterruptEnable  = (LPUART_FIFO_TXOFE_MASK), /*!< Transmit FIFO Overflow. bit 9 */
+    kLPUART_RxFifoUnderflowInterruptEnable = (LPUART_FIFO_RXUFE_MASK), /*!< Receive FIFO Underflow. bit 8 */
+#endif
+
+    kLPUART_AllInterruptEnable = kLPUART_RxActiveEdgeInterruptEnable | kLPUART_TxDataRegEmptyInterruptEnable |
+                                 kLPUART_TransmissionCompleteInterruptEnable | kLPUART_RxDataRegFullInterruptEnable |
+                                 kLPUART_IdleLineInterruptEnable | kLPUART_RxOverrunInterruptEnable |
+                                 kLPUART_NoiseErrorInterruptEnable | kLPUART_FramingErrorInterruptEnable |
+                                 kLPUART_ParityErrorInterruptEnable
+#if defined(FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT) && FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT
+                                 | kLPUART_LinBreakInterruptEnable
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING) && FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING
+                                 | kLPUART_Match1InterruptEnable | kLPUART_Match2InterruptEnable
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+                                 | kLPUART_TxFifoOverflowInterruptEnable | kLPUART_RxFifoUnderflowInterruptEnable
+#endif
+    ,
+};
+
+/*!
+ * @brief LPUART status flags.
+ *
+ * This provides constants for the LPUART status flags for use in the LPUART functions.
+ */
+enum _lpuart_flags
+{
+    kLPUART_TxDataRegEmptyFlag =
+        (LPUART_STAT_TDRE_MASK), /*!< Transmit data register empty flag, sets when transmit buffer is empty. bit 23 */
+    kLPUART_TransmissionCompleteFlag =
+        (LPUART_STAT_TC_MASK), /*!< Transmission complete flag, sets when transmission activity complete. bit 22 */
+    kLPUART_RxDataRegFullFlag = (LPUART_STAT_RDRF_MASK), /*!< Receive data register full flag, sets when the receive
+                                                            data buffer is full. bit 21 */
+    kLPUART_IdleLineFlag  = (LPUART_STAT_IDLE_MASK), /*!< Idle line detect flag, sets when idle line detected. bit 20 */
+    kLPUART_RxOverrunFlag = (LPUART_STAT_OR_MASK),   /*!< Receive Overrun, sets when new data is received before data is
+                                                        read from receive register. bit 19 */
+    kLPUART_NoiseErrorFlag = (LPUART_STAT_NF_MASK),  /*!< Receive takes 3 samples of each received bit.  If any of these
+                                                        samples differ, noise flag sets. bit 18 */
+    kLPUART_FramingErrorFlag =
+        (LPUART_STAT_FE_MASK), /*!< Frame error flag, sets if logic 0 was detected where stop bit expected. bit 17 */
+    kLPUART_ParityErrorFlag = (LPUART_STAT_PF_MASK), /*!< If parity enabled, sets upon parity error detection. bit 16 */
+#if defined(FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT) && FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT
+    kLPUART_LinBreakFlag = (LPUART_STAT_LBKDIF_MASK), /*!< LIN break detect interrupt flag, sets when LIN break
+                                                         char detected and LIN circuit enabled. bit 31 */
+#endif
+    kLPUART_RxActiveEdgeFlag = (LPUART_STAT_RXEDGIF_MASK), /*!< Receive pin active edge interrupt flag, sets when active
+                                                              edge detected. bit 30 */
+    kLPUART_RxActiveFlag =
+        (LPUART_STAT_RAF_MASK), /*!< Receiver Active Flag (RAF), sets at beginning of valid start. bit 24 */
+#if defined(FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING) && FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING
+    kLPUART_DataMatch1Flag =
+        LPUART_STAT_MA1F_MASK, /*!< The next character to be read from LPUART_DATA matches MA1. bit 15 */
+    kLPUART_DataMatch2Flag =
+        LPUART_STAT_MA2F_MASK, /*!< The next character to be read from LPUART_DATA matches MA2. bit 14 */
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+    kLPUART_TxFifoEmptyFlag =
+        (LPUART_FIFO_TXEMPT_MASK >> 16), /*!< TXEMPT bit, sets if transmit buffer is empty. bit 7 */
+    kLPUART_RxFifoEmptyFlag =
+        (LPUART_FIFO_RXEMPT_MASK >> 16), /*!< RXEMPT bit, sets if receive buffer is empty. bit 6 */
+    kLPUART_TxFifoOverflowFlag =
+        (LPUART_FIFO_TXOF_MASK >> 16), /*!< TXOF bit, sets if transmit buffer overflow occurred. bit 1 */
+    kLPUART_RxFifoUnderflowFlag =
+        (LPUART_FIFO_RXUF_MASK >> 16), /*!< RXUF bit, sets if receive buffer underflow occurred. bit 0 */
+#endif
+
+    kLPUART_AllClearFlags = kLPUART_RxActiveEdgeFlag | kLPUART_IdleLineFlag | kLPUART_RxOverrunFlag |
+                            kLPUART_NoiseErrorFlag | kLPUART_FramingErrorFlag | kLPUART_ParityErrorFlag
+#if defined(FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING) && FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING
+                            | kLPUART_DataMatch1Flag | kLPUART_DataMatch2Flag
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+                            | kLPUART_TxFifoOverflowFlag | kLPUART_RxFifoUnderflowFlag
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT) && FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT
+                            | kLPUART_LinBreakFlag
+#endif
+    ,
+
+    kLPUART_AllFlags =
+        kLPUART_RxActiveEdgeFlag | kLPUART_IdleLineFlag | kLPUART_RxOverrunFlag | kLPUART_TxDataRegEmptyFlag |
+        kLPUART_TransmissionCompleteFlag | kLPUART_RxDataRegFullFlag | kLPUART_RxActiveFlag | kLPUART_NoiseErrorFlag |
+        kLPUART_FramingErrorFlag | kLPUART_ParityErrorFlag
+#if defined(FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING) && FSL_FEATURE_LPUART_HAS_ADDRESS_MATCHING
+        | kLPUART_DataMatch1Flag | kLPUART_DataMatch2Flag
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+        | kLPUART_TxFifoOverflowFlag | kLPUART_RxFifoUnderflowFlag | kLPUART_TxFifoEmptyFlag | kLPUART_RxFifoEmptyFlag
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT) && FSL_FEATURE_LPUART_HAS_LIN_BREAK_DETECT
+        | kLPUART_LinBreakFlag
+#endif
+    ,
+};
+
+/*! @brief LPUART configuration structure. */
+typedef struct _lpuart_config
+{
+    uint32_t baudRate_Bps;            /*!< LPUART baud rate  */
+    lpuart_parity_mode_t parityMode;  /*!< Parity mode, disabled (default), even, odd */
+    lpuart_data_bits_t dataBitsCount; /*!< Data bits count, eight (default), seven */
+    bool isMsb;                       /*!< Data bits order, LSB (default), MSB */
+#if defined(FSL_FEATURE_LPUART_HAS_STOP_BIT_CONFIG_SUPPORT) && FSL_FEATURE_LPUART_HAS_STOP_BIT_CONFIG_SUPPORT
+    lpuart_stop_bit_count_t stopBitCount; /*!< Number of stop bits, 1 stop bit (default) or 2 stop bits  */
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+    uint8_t txFifoWatermark; /*!< TX FIFO watermark */
+    uint8_t rxFifoWatermark; /*!< RX FIFO watermark */
+#endif
+#if defined(FSL_FEATURE_LPUART_HAS_MODEM_SUPPORT) && FSL_FEATURE_LPUART_HAS_MODEM_SUPPORT
+    bool enableRxRTS;                         /*!< RX RTS enable */
+    bool enableTxCTS;                         /*!< TX CTS enable */
+    lpuart_transmit_cts_source_t txCtsSource; /*!< TX CTS source */
+    lpuart_transmit_cts_config_t txCtsConfig; /*!< TX CTS configure */
+#endif
+    lpuart_idle_type_select_t rxIdleType; /*!< RX IDLE type. */
+    lpuart_idle_config_t rxIdleConfig;    /*!< RX IDLE configuration. */
+    bool enableTx;                        /*!< Enable TX */
+    bool enableRx;                        /*!< Enable RX */
+} lpuart_config_t;
+
+/*! @brief LPUART transfer structure. */
+typedef struct _lpuart_transfer
+{
+    /*
+     * Use separate TX and RX data pointer, because TX data is const data.
+     * The member data is kept for backward compatibility.
+     */
+    union
+    {
+        uint8_t *data;         /*!< The buffer of data to be transfer.*/
+        uint8_t *rxData;       /*!< The buffer to receive data. */
+        const uint8_t *txData; /*!< The buffer of data to be sent. */
+    };
+    size_t dataSize; /*!< The byte count to be transfer. */
+} lpuart_transfer_t;
+
+/* Forward declaration of the handle typedef. */
+typedef struct _lpuart_handle lpuart_handle_t;
+
+/*! @brief LPUART transfer callback function. */
+typedef void (*lpuart_transfer_callback_t)(LPUART_Type *base, lpuart_handle_t *handle, status_t status, void *userData);
+
+/*! @brief LPUART handle structure. */
+struct _lpuart_handle
+{
+    const uint8_t *volatile txData; /*!< Address of remaining data to send. */
+    volatile size_t txDataSize;     /*!< Size of the remaining data to send. */
+    size_t txDataSizeAll;           /*!< Size of the data to send out. */
+    uint8_t *volatile rxData;       /*!< Address of remaining data to receive. */
+    volatile size_t rxDataSize;     /*!< Size of the remaining data to receive. */
+    size_t rxDataSizeAll;           /*!< Size of the data to receive. */
+
+    uint8_t *rxRingBuffer;              /*!< Start address of the receiver ring buffer. */
+    size_t rxRingBufferSize;            /*!< Size of the ring buffer. */
+    volatile uint16_t rxRingBufferHead; /*!< Index for the driver to store received data into ring buffer. */
+    volatile uint16_t rxRingBufferTail; /*!< Index for the user to get data from the ring buffer. */
+
+    lpuart_transfer_callback_t callback; /*!< Callback function. */
+    void *userData;                      /*!< LPUART callback function parameter.*/
+
+    volatile uint8_t txState; /*!< TX transfer state. */
+    volatile uint8_t rxState; /*!< RX transfer state. */
+
+#if defined(FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT
+    bool isSevenDataBits; /*!< Seven data bits flag. */
+#endif
+};
+
+/* Typedef for interrupt handler. */
+typedef void (*lpuart_isr_t)(LPUART_Type *base, void *handle);
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+/* Array of LPUART handle. */
+extern void *s_lpuartHandle[];
+
+/* Array of LPUART IRQ number. */
+#if defined(FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ) && FSL_FEATURE_LPUART_HAS_SEPARATE_RX_TX_IRQ
+extern const IRQn_Type s_lpuartTxIRQ[];
+#else
+extern const IRQn_Type s_lpuartIRQ[];
+#endif
+
+/* LPUART ISR for transactional APIs. */
+extern lpuart_isr_t s_lpuartIsr;
+
+/*******************************************************************************
+ * API
+ ******************************************************************************/
+
+#if defined(__cplusplus)
+extern "C" {
+#endif /* _cplusplus */
+
+#if defined(FSL_FEATURE_LPUART_HAS_GLOBAL) && FSL_FEATURE_LPUART_HAS_GLOBAL
+
+/*!
+ * @name Software Reset
+ * @{
+ */
+
+/*!
+ * @brief Resets the LPUART using software.
+ *
+ * This function resets all internal logic and registers except the Global Register.
+ * Remains set until cleared by software.
+ *
+ * @param base LPUART peripheral base address.
+ */
+static inline void LPUART_SoftwareReset(LPUART_Type *base)
+{
+    base->GLOBAL |= LPUART_GLOBAL_RST_MASK;
+    base->GLOBAL &= ~LPUART_GLOBAL_RST_MASK;
+}
+/* @} */
+#endif /*FSL_FEATURE_LPUART_HAS_GLOBAL*/
+
+/*!
+ * @name Initialization and deinitialization
+ * @{
+ */
+
+/*!
+ * @brief Initializes an LPUART instance with the user configuration structure and the peripheral clock.
+ *
+ * This function configures the LPUART module with user-defined settings. Call the LPUART_GetDefaultConfig() function
+ * to configure the configuration structure and get the default configuration.
+ * The example below shows how to use this API to configure the LPUART.
+ * @code
+ *  lpuart_config_t lpuartConfig;
+ *  lpuartConfig.baudRate_Bps = 115200U;
+ *  lpuartConfig.parityMode = kLPUART_ParityDisabled;
+ *  lpuartConfig.dataBitsCount = kLPUART_EightDataBits;
+ *  lpuartConfig.isMsb = false;
+ *  lpuartConfig.stopBitCount = kLPUART_OneStopBit;
+ *  lpuartConfig.txFifoWatermark = 0;
+ *  lpuartConfig.rxFifoWatermark = 1;
+ *  LPUART_Init(LPUART1, &lpuartConfig, 20000000U);
+ * @endcode
+ *
+ * @param base LPUART peripheral base address.
+ * @param config Pointer to a user-defined configuration structure.
+ * @param srcClock_Hz LPUART clock source frequency in HZ.
+ * @retval kStatus_LPUART_BaudrateNotSupport Baudrate is not support in current clock source.
+ * @retval kStatus_Success LPUART initialize succeed
+ */
+status_t LPUART_Init(LPUART_Type *base, const lpuart_config_t *config, uint32_t srcClock_Hz);
+
+/*!
+ * @brief Deinitializes a LPUART instance.
+ *
+ * This function waits for transmit to complete, disables TX and RX, and disables the LPUART clock.
+ *
+ * @param base LPUART peripheral base address.
+ */
+void LPUART_Deinit(LPUART_Type *base);
+
+/*!
+ * @brief Gets the default configuration structure.
+ *
+ * This function initializes the LPUART configuration structure to a default value. The default
+ * values are:
+ *   lpuartConfig->baudRate_Bps = 115200U;
+ *   lpuartConfig->parityMode = kLPUART_ParityDisabled;
+ *   lpuartConfig->dataBitsCount = kLPUART_EightDataBits;
+ *   lpuartConfig->isMsb = false;
+ *   lpuartConfig->stopBitCount = kLPUART_OneStopBit;
+ *   lpuartConfig->txFifoWatermark = 0;
+ *   lpuartConfig->rxFifoWatermark = 1;
+ *   lpuartConfig->rxIdleType = kLPUART_IdleTypeStartBit;
+ *   lpuartConfig->rxIdleConfig = kLPUART_IdleCharacter1;
+ *   lpuartConfig->enableTx = false;
+ *   lpuartConfig->enableRx = false;
+ *
+ * @param config Pointer to a configuration structure.
+ */
+void LPUART_GetDefaultConfig(lpuart_config_t *config);
+/* @} */
+
+/*!
+ * @name Module configuration
+ * @{
+ */
+/*!
+ * @brief Sets the LPUART instance baudrate.
+ *
+ * This function configures the LPUART module baudrate. This function is used to update
+ * the LPUART module baudrate after the LPUART module is initialized by the LPUART_Init.
+ * @code
+ *  LPUART_SetBaudRate(LPUART1, 115200U, 20000000U);
+ * @endcode
+ *
+ * @param base LPUART peripheral base address.
+ * @param baudRate_Bps LPUART baudrate to be set.
+ * @param srcClock_Hz LPUART clock source frequency in HZ.
+ * @retval kStatus_LPUART_BaudrateNotSupport Baudrate is not supported in the current clock source.
+ * @retval kStatus_Success Set baudrate succeeded.
+ */
+status_t LPUART_SetBaudRate(LPUART_Type *base, uint32_t baudRate_Bps, uint32_t srcClock_Hz);
+
+/*!
+ * @brief Enable 9-bit data mode for LPUART.
+ *
+ * This function set the 9-bit mode for LPUART module. The 9th bit is not used for parity thus can be modified by user.
+ *
+ * @param base LPUART peripheral base address.
+ * @param enable true to enable, flase to disable.
+ */
+void LPUART_Enable9bitMode(LPUART_Type *base, bool enable);
+
+/*!
+ * @brief Set the LPUART address.
+ *
+ * This function configures the address for LPUART module that works as slave in 9-bit data mode. One or two address
+ * fields can be configured. When the address field's match enable bit is set, the frame it receices with MSB being
+ * 1 is considered as an address frame, otherwise it is considered as data frame. Once the address frame matches one
+ * of slave's own addresses, this slave is addressed. This address frame and its following data frames are stored in
+ * the receive buffer, otherwise the frames will be discarded. To un-address a slave, just send an address frame with
+ * unmatched address.
+ *
+ * @note Any LPUART instance joined in the multi-slave system can work as slave. The position of the address mark is the
+ * same as the parity bit when parity is enabled for 8 bit and 9 bit data formats.
+ *
+ * @param base LPUART peripheral base address.
+ * @param address1 LPUART slave address1.
+ * @param address2 LPUART slave address2.
+ */
+static inline void LPUART_SetMatchAddress(LPUART_Type *base, uint16_t address1, uint16_t address2)
+{
+    /* Configure match address. */
+    uint32_t address = ((uint32_t)address2 << 16U) | (uint32_t)address1 | 0x1000100UL;
+    base->MATCH      = address;
+}
+
+/*!
+ * @brief Enable the LPUART match address feature.
+ *
+ * @param base LPUART peripheral base address.
+ * @param match1 true to enable match address1, false to disable.
+ * @param match2 true to enable match address2, false to disable.
+ */
+static inline void LPUART_EnableMatchAddress(LPUART_Type *base, bool match1, bool match2)
+{
+    /* Configure match address1 enable bit. */
+    if (match1)
+    {
+        base->BAUD |= (uint32_t)LPUART_BAUD_MAEN1_MASK;
+    }
+    else
+    {
+        base->BAUD &= ~(uint32_t)LPUART_BAUD_MAEN1_MASK;
+    }
+    /* Configure match address2 enable bit. */
+    if (match2)
+    {
+        base->BAUD |= (uint32_t)LPUART_BAUD_MAEN2_MASK;
+    }
+    else
+    {
+        base->BAUD &= ~(uint32_t)LPUART_BAUD_MAEN2_MASK;
+    }
+}
+
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+/*!
+ * @brief Sets the rx FIFO watermark.
+ *
+ * @param base LPUART peripheral base address.
+ * @param water Rx FIFO watermark.
+ */
+static inline void LPUART_SetRxFifoWatermark(LPUART_Type *base, uint8_t water)
+{
+    assert((uint8_t)FSL_FEATURE_LPUART_FIFO_SIZEn(base) > water);
+    base->WATER = (base->WATER & ~LPUART_WATER_RXWATER_MASK) | LPUART_WATER_RXWATER(water);
+}
+
+/*!
+ * @brief Sets the tx FIFO watermark.
+ *
+ * @param base LPUART peripheral base address.
+ * @param water Tx FIFO watermark.
+ */
+static inline void LPUART_SetTxFifoWatermark(LPUART_Type *base, uint8_t water)
+{
+    assert((uint8_t)FSL_FEATURE_LPUART_FIFO_SIZEn(base) > water);
+    base->WATER = (base->WATER & ~LPUART_WATER_TXWATER_MASK) | LPUART_WATER_TXWATER(water);
+}
+#endif
+/* @} */
+
+/*!
+ * @name Status
+ * @{
+ */
+
+/*!
+ * @brief Gets LPUART status flags.
+ *
+ * This function gets all LPUART status flags. The flags are returned as the logical
+ * OR value of the enumerators @ref _lpuart_flags. To check for a specific status,
+ * compare the return value with enumerators in the @ref _lpuart_flags.
+ * For example, to check whether the TX is empty:
+ * @code
+ *     if (kLPUART_TxDataRegEmptyFlag & LPUART_GetStatusFlags(LPUART1))
+ *     {
+ *         ...
+ *     }
+ * @endcode
+ *
+ * @param base LPUART peripheral base address.
+ * @return LPUART status flags which are ORed by the enumerators in the _lpuart_flags.
+ */
+uint32_t LPUART_GetStatusFlags(LPUART_Type *base);
+
+/*!
+ * @brief Clears status flags with a provided mask.
+ *
+ * This function clears LPUART status flags with a provided mask. Automatically cleared flags
+ * can't be cleared by this function.
+ * Flags that can only cleared or set by hardware are:
+ *    kLPUART_TxDataRegEmptyFlag, kLPUART_TransmissionCompleteFlag, kLPUART_RxDataRegFullFlag,
+ *    kLPUART_RxActiveFlag, kLPUART_NoiseErrorFlag, kLPUART_ParityErrorFlag,
+ *    kLPUART_TxFifoEmptyFlag,kLPUART_RxFifoEmptyFlag
+ * Note: This API should be called when the Tx/Rx is idle, otherwise it takes no effects.
+ *
+ * @param base LPUART peripheral base address.
+ * @param mask the status flags to be cleared. The user can use the enumerators in the
+ *  _lpuart_status_flag_t to do the OR operation and get the mask.
+ * @return 0 succeed, others failed.
+ * @retval kStatus_LPUART_FlagCannotClearManually The flag can't be cleared by this function but
+ *         it is cleared automatically by hardware.
+ * @retval kStatus_Success Status in the mask are cleared.
+ */
+status_t LPUART_ClearStatusFlags(LPUART_Type *base, uint32_t mask);
+/* @} */
+
+/*!
+ * @name Interrupts
+ * @{
+ */
+
+/*!
+ * @brief Enables LPUART interrupts according to a provided mask.
+ *
+ * This function enables the LPUART interrupts according to a provided mask. The mask
+ * is a logical OR of enumeration members. See the @ref _lpuart_interrupt_enable.
+ * This examples shows how to enable TX empty interrupt and RX full interrupt:
+ * @code
+ *     LPUART_EnableInterrupts(LPUART1,kLPUART_TxDataRegEmptyInterruptEnable | kLPUART_RxDataRegFullInterruptEnable);
+ * @endcode
+ *
+ * @param base LPUART peripheral base address.
+ * @param mask The interrupts to enable. Logical OR of @ref _lpuart_interrupt_enable.
+ */
+void LPUART_EnableInterrupts(LPUART_Type *base, uint32_t mask);
+
+/*!
+ * @brief Disables  LPUART interrupts according to a provided mask.
+ *
+ * This function disables the LPUART interrupts according to a provided mask. The mask
+ * is a logical OR of enumeration members. See @ref _lpuart_interrupt_enable.
+ * This example shows how to disable the TX empty interrupt and RX full interrupt:
+ * @code
+ *     LPUART_DisableInterrupts(LPUART1,kLPUART_TxDataRegEmptyInterruptEnable | kLPUART_RxDataRegFullInterruptEnable);
+ * @endcode
+ *
+ * @param base LPUART peripheral base address.
+ * @param mask The interrupts to disable. Logical OR of @ref _lpuart_interrupt_enable.
+ */
+void LPUART_DisableInterrupts(LPUART_Type *base, uint32_t mask);
+
+/*!
+ * @brief Gets enabled LPUART interrupts.
+ *
+ * This function gets the enabled LPUART interrupts. The enabled interrupts are returned
+ * as the logical OR value of the enumerators @ref _lpuart_interrupt_enable. To check
+ * a specific interrupt enable status, compare the return value with enumerators
+ * in @ref _lpuart_interrupt_enable.
+ * For example, to check whether the TX empty interrupt is enabled:
+ * @code
+ *     uint32_t enabledInterrupts = LPUART_GetEnabledInterrupts(LPUART1);
+ *
+ *     if (kLPUART_TxDataRegEmptyInterruptEnable & enabledInterrupts)
+ *     {
+ *         ...
+ *     }
+ * @endcode
+ *
+ * @param base LPUART peripheral base address.
+ * @return LPUART interrupt flags which are logical OR of the enumerators in @ref _lpuart_interrupt_enable.
+ */
+uint32_t LPUART_GetEnabledInterrupts(LPUART_Type *base);
+/* @} */
+
+#if defined(FSL_FEATURE_LPUART_HAS_DMA_ENABLE) && FSL_FEATURE_LPUART_HAS_DMA_ENABLE
+/*!
+ * @name DMA Configuration
+ * @{
+ */
+/*!
+ * @brief Gets the LPUART data register address.
+ *
+ * This function returns the LPUART data register address, which is mainly used by the DMA/eDMA.
+ *
+ * @param base LPUART peripheral base address.
+ * @return LPUART data register addresses which are used both by the transmitter and receiver.
+ */
+static inline uint32_t LPUART_GetDataRegisterAddress(LPUART_Type *base)
+{
+    return (uint32_t) & (base->DATA);
+}
+
+/*!
+ * @brief Enables or disables the LPUART transmitter DMA request.
+ *
+ * This function enables or disables the transmit data register empty flag, STAT[TDRE], to generate DMA requests.
+ *
+ * @param base LPUART peripheral base address.
+ * @param enable True to enable, false to disable.
+ */
+static inline void LPUART_EnableTxDMA(LPUART_Type *base, bool enable)
+{
+    if (enable)
+    {
+        base->BAUD |= LPUART_BAUD_TDMAE_MASK;
+    }
+    else
+    {
+        base->BAUD &= ~LPUART_BAUD_TDMAE_MASK;
+    }
+}
+
+/*!
+ * @brief Enables or disables the LPUART receiver DMA.
+ *
+ * This function enables or disables the receiver data register full flag, STAT[RDRF], to generate DMA requests.
+ *
+ * @param base LPUART peripheral base address.
+ * @param enable True to enable, false to disable.
+ */
+static inline void LPUART_EnableRxDMA(LPUART_Type *base, bool enable)
+{
+    if (enable)
+    {
+        base->BAUD |= LPUART_BAUD_RDMAE_MASK;
+    }
+    else
+    {
+        base->BAUD &= ~LPUART_BAUD_RDMAE_MASK;
+    }
+}
+/* @} */
+#endif /* FSL_FEATURE_LPUART_HAS_DMA_ENABLE */
+
+/*!
+ * @name Bus Operations
+ * @{
+ */
+
+/*!
+ * @brief Get the LPUART instance from peripheral base address.
+ *
+ * @param base LPUART peripheral base address.
+ * @return LPUART instance.
+ */
+uint32_t LPUART_GetInstance(LPUART_Type *base);
+
+/*!
+ * @brief Enables or disables the LPUART transmitter.
+ *
+ * This function enables or disables the LPUART transmitter.
+ *
+ * @param base LPUART peripheral base address.
+ * @param enable True to enable, false to disable.
+ */
+static inline void LPUART_EnableTx(LPUART_Type *base, bool enable)
+{
+    if (enable)
+    {
+        base->CTRL |= LPUART_CTRL_TE_MASK;
+    }
+    else
+    {
+        base->CTRL &= ~LPUART_CTRL_TE_MASK;
+    }
+}
+
+/*!
+ * @brief Enables or disables the LPUART receiver.
+ *
+ * This function enables or disables the LPUART receiver.
+ *
+ * @param base LPUART peripheral base address.
+ * @param enable True to enable, false to disable.
+ */
+static inline void LPUART_EnableRx(LPUART_Type *base, bool enable)
+{
+    if (enable)
+    {
+        base->CTRL |= LPUART_CTRL_RE_MASK;
+    }
+    else
+    {
+        base->CTRL &= ~LPUART_CTRL_RE_MASK;
+    }
+}
+
+/*!
+ * @brief Writes to the transmitter register.
+ *
+ * This function writes data to the transmitter register directly. The upper layer must
+ * ensure that the TX register is empty or that the TX FIFO has room before calling this function.
+ *
+ * @param base LPUART peripheral base address.
+ * @param data Data write to the TX register.
+ */
+static inline void LPUART_WriteByte(LPUART_Type *base, uint8_t data)
+{
+    base->DATA = data;
+}
+
+/*!
+ * @brief Reads the receiver register.
+ *
+ * This function reads data from the receiver register directly. The upper layer must
+ * ensure that the receiver register is full or that the RX FIFO has data before calling this function.
+ *
+ * @param base LPUART peripheral base address.
+ * @return Data read from data register.
+ */
+static inline uint8_t LPUART_ReadByte(LPUART_Type *base)
+{
+#if defined(FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT) && FSL_FEATURE_LPUART_HAS_7BIT_DATA_SUPPORT
+    uint32_t ctrl = base->CTRL;
+    uint8_t result;
+    bool isSevenDataBits = (((ctrl & LPUART_CTRL_M7_MASK) != 0U) ||
+                            (((ctrl & LPUART_CTRL_M7_MASK) == 0U) && ((ctrl & LPUART_CTRL_M_MASK) == 0U) &&
+                             ((ctrl & LPUART_CTRL_PE_MASK) != 0U)));
+
+    if (isSevenDataBits)
+    {
+        result = (uint8_t)(base->DATA & 0x7FU);
+    }
+    else
+    {
+        result = (uint8_t)base->DATA;
+    }
+
+    return result;
+#else
+    return (uint8_t)(base->DATA);
+#endif
+}
+
+#if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
+/*!
+ * @brief Gets the rx FIFO data count.
+ *
+ * @param base LPUART peripheral base address.
+ * @return rx FIFO data count.
+ */
+static inline uint8_t LPUART_GetRxFifoCount(LPUART_Type *base)
+{
+    return (uint8_t)((base->WATER & LPUART_WATER_RXCOUNT_MASK) >> LPUART_WATER_RXCOUNT_SHIFT);
+}
+
+/*!
+ * @brief Gets the tx FIFO data count.
+ *
+ * @param base LPUART peripheral base address.
+ * @return tx FIFO data count.
+ */
+static inline uint8_t LPUART_GetTxFifoCount(LPUART_Type *base)
+{
+    return (uint8_t)((base->WATER & LPUART_WATER_TXCOUNT_MASK) >> LPUART_WATER_TXCOUNT_SHIFT);
+}
+#endif
+
+/*!
+ * @brief Transmit an address frame in 9-bit data mode.
+ *
+ * @param base LPUART peripheral base address.
+ * @param address LPUART slave address.
+ */
+void LPUART_SendAddress(LPUART_Type *base, uint8_t address);
+
+/*!
+ * @brief Writes to the transmitter register using a blocking method.
+ *
+ * This function polls the transmitter register, first waits for the register to be empty or TX FIFO to have room,
+ * and writes data to the transmitter buffer, then waits for the dat to be sent out to the bus.
+ *
+ * @param base LPUART peripheral base address.
+ * @param data Start address of the data to write.
+ * @param length Size of the data to write.
+ * @retval kStatus_LPUART_Timeout Transmission timed out and was aborted.
+ * @retval kStatus_Success Successfully wrote all data.
+ */
+status_t LPUART_WriteBlocking(LPUART_Type *base, const uint8_t *data, size_t length);
+
+/*!
+ * @brief Reads the receiver data register using a blocking method.
+ *
+ * This function polls the receiver register, waits for the receiver register full or receiver FIFO
+ * has data, and reads data from the TX register.
+ *
+ * @param base LPUART peripheral base address.
+ * @param data Start address of the buffer to store the received data.
+ * @param length Size of the buffer.
+ * @retval kStatus_LPUART_RxHardwareOverrun Receiver overrun happened while receiving data.
+ * @retval kStatus_LPUART_NoiseError Noise error happened while receiving data.
+ * @retval kStatus_LPUART_FramingError Framing error happened while receiving data.
+ * @retval kStatus_LPUART_ParityError Parity error happened while receiving data.
+ * @retval kStatus_LPUART_Timeout Transmission timed out and was aborted.
+ * @retval kStatus_Success Successfully received all data.
+ */
+status_t LPUART_ReadBlocking(LPUART_Type *base, uint8_t *data, size_t length);
+
+/* @} */
+
+/*!
+ * @name Transactional
+ * @{
+ */
+
+/*!
+ * @brief Initializes the LPUART handle.
+ *
+ * This function initializes the LPUART handle, which can be used for other LPUART
+ * transactional APIs. Usually, for a specified LPUART instance,
+ * call this API once to get the initialized handle.
+ *
+ * The LPUART driver supports the "background" receiving, which means that user can set up
+ * an RX ring buffer optionally. Data received is stored into the ring buffer even when the
+ * user doesn't call the LPUART_TransferReceiveNonBlocking() API. If there is already data received
+ * in the ring buffer, the user can get the received data from the ring buffer directly.
+ * The ring buffer is disabled if passing NULL as @p ringBuffer.
+ *
+ * @param base LPUART peripheral base address.
+ * @param handle LPUART handle pointer.
+ * @param callback Callback function.
+ * @param userData User data.
+ */
+void LPUART_TransferCreateHandle(LPUART_Type *base,
+                                 lpuart_handle_t *handle,
+                                 lpuart_transfer_callback_t callback,
+                                 void *userData);
+/*!
+ * @brief Transmits a buffer of data using the interrupt method.
+ *
+ * This function send data using an interrupt method. This is a non-blocking function, which
+ * returns directly without waiting for all data written to the transmitter register. When
+ * all data is written to the TX register in the ISR, the LPUART driver calls the callback
+ * function and passes the @ref kStatus_LPUART_TxIdle as status parameter.
+ *
+ * @note The kStatus_LPUART_TxIdle is passed to the upper layer when all data are written
+ * to the TX register. However, there is no check to ensure that all the data sent out. Before disabling the TX,
+ * check the kLPUART_TransmissionCompleteFlag to ensure that the transmit is finished.
+ *
+ * @param base LPUART peripheral base address.
+ * @param handle LPUART handle pointer.
+ * @param xfer LPUART transfer structure, see #lpuart_transfer_t.
+ * @retval kStatus_Success Successfully start the data transmission.
+ * @retval kStatus_LPUART_TxBusy Previous transmission still not finished, data not all written to the TX register.
+ * @retval kStatus_InvalidArgument Invalid argument.
+ */
+status_t LPUART_TransferSendNonBlocking(LPUART_Type *base, lpuart_handle_t *handle, lpuart_transfer_t *xfer);
+
+/*!
+ * @brief Sets up the RX ring buffer.
+ *
+ * This function sets up the RX ring buffer to a specific UART handle.
+ *
+ * When the RX ring buffer is used, data received is stored into the ring buffer even when
+ * the user doesn't call the UART_TransferReceiveNonBlocking() API. If there is already data received
+ * in the ring buffer, the user can get the received data from the ring buffer directly.
+ *
+ * @note When using RX ring buffer, one byte is reserved for internal use. In other
+ * words, if @p ringBufferSize is 32, then only 31 bytes are used for saving data.
+ *
+ * @param base LPUART peripheral base address.
+ * @param handle LPUART handle pointer.
+ * @param ringBuffer Start address of ring buffer for background receiving. Pass NULL to disable the ring buffer.
+ * @param ringBufferSize size of the ring buffer.
+ */
+void LPUART_TransferStartRingBuffer(LPUART_Type *base,
+                                    lpuart_handle_t *handle,
+                                    uint8_t *ringBuffer,
+                                    size_t ringBufferSize);
+
+/*!
+ * @brief Aborts the background transfer and uninstalls the ring buffer.
+ *
+ * This function aborts the background transfer and uninstalls the ring buffer.
+ *
+ * @param base LPUART peripheral base address.
+ * @param handle LPUART handle pointer.
+ */
+void LPUART_TransferStopRingBuffer(LPUART_Type *base, lpuart_handle_t *handle);
+
+/*!
+ * @brief Get the length of received data in RX ring buffer.
+ *
+ * @param base LPUART peripheral base address.
+ * @param handle LPUART handle pointer.
+ * @return Length of received data in RX ring buffer.
+ */
+size_t LPUART_TransferGetRxRingBufferLength(LPUART_Type *base, lpuart_handle_t *handle);
+
+/*!
+ * @brief Aborts the interrupt-driven data transmit.
+ *
+ * This function aborts the interrupt driven data sending. The user can get the remainBtyes to find out
+ * how many bytes are not sent out.
+ *
+ * @param base LPUART peripheral base address.
+ * @param handle LPUART handle pointer.
+ */
+void LPUART_TransferAbortSend(LPUART_Type *base, lpuart_handle_t *handle);
+
+/*!
+ * @brief Gets the number of bytes that have been sent out to bus.
+ *
+ * This function gets the number of bytes that have been sent out to bus by an interrupt method.
+ *
+ * @param base LPUART peripheral base address.
+ * @param handle LPUART handle pointer.
+ * @param count Send bytes count.
+ * @retval kStatus_NoTransferInProgress No send in progress.
+ * @retval kStatus_InvalidArgument Parameter is invalid.
+ * @retval kStatus_Success Get successfully through the parameter \p count;
+ */
+status_t LPUART_TransferGetSendCount(LPUART_Type *base, lpuart_handle_t *handle, uint32_t *count);
+
+/*!
+ * @brief Receives a buffer of data using the interrupt method.
+ *
+ * This function receives data using an interrupt method. This is a non-blocking function
+ * which returns without waiting to ensure that all data are received.
+ * If the RX ring buffer is used and not empty, the data in the ring buffer is copied and
+ * the parameter @p receivedBytes shows how many bytes are copied from the ring buffer.
+ * After copying, if the data in the ring buffer is not enough for read, the receive
+ * request is saved by the LPUART driver. When the new data arrives, the receive request
+ * is serviced first. When all data is received, the LPUART driver notifies the upper layer
+ * through a callback function and passes a status parameter kStatus_UART_RxIdle.
+ * For example, the upper layer needs 10 bytes but there are only 5 bytes in ring buffer.
+ * The 5 bytes are copied to xfer->data, which returns with the
+ * parameter @p receivedBytes set to 5. For the remaining 5 bytes, the newly arrived data is
+ * saved from xfer->data[5]. When 5 bytes are received, the LPUART driver notifies the upper layer.
+ * If the RX ring buffer is not enabled, this function enables the RX and RX interrupt
+ * to receive data to xfer->data. When all data is received, the upper layer is notified.
+ *
+ * @param base LPUART peripheral base address.
+ * @param handle LPUART handle pointer.
+ * @param xfer LPUART transfer structure, see uart_transfer_t.
+ * @param receivedBytes Bytes received from the ring buffer directly.
+ * @retval kStatus_Success Successfully queue the transfer into the transmit queue.
+ * @retval kStatus_LPUART_RxBusy Previous receive request is not finished.
+ * @retval kStatus_InvalidArgument Invalid argument.
+ */
+status_t LPUART_TransferReceiveNonBlocking(LPUART_Type *base,
+                                           lpuart_handle_t *handle,
+                                           lpuart_transfer_t *xfer,
+                                           size_t *receivedBytes);
+
+/*!
+ * @brief Aborts the interrupt-driven data receiving.
+ *
+ * This function aborts the interrupt-driven data receiving. The user can get the remainBytes to find out
+ * how many bytes not received yet.
+ *
+ * @param base LPUART peripheral base address.
+ * @param handle LPUART handle pointer.
+ */
+void LPUART_TransferAbortReceive(LPUART_Type *base, lpuart_handle_t *handle);
+
+/*!
+ * @brief Gets the number of bytes that have been received.
+ *
+ * This function gets the number of bytes that have been received.
+ *
+ * @param base LPUART peripheral base address.
+ * @param handle LPUART handle pointer.
+ * @param count Receive bytes count.
+ * @retval kStatus_NoTransferInProgress No receive in progress.
+ * @retval kStatus_InvalidArgument Parameter is invalid.
+ * @retval kStatus_Success Get successfully through the parameter \p count;
+ */
+status_t LPUART_TransferGetReceiveCount(LPUART_Type *base, lpuart_handle_t *handle, uint32_t *count);
+
+/*!
+ * @brief LPUART IRQ handle function.
+ *
+ * This function handles the LPUART transmit and receive IRQ request.
+ *
+ * @param base LPUART peripheral base address.
+ * @param irqHandle LPUART handle pointer.
+ */
+void LPUART_TransferHandleIRQ(LPUART_Type *base, void *irqHandle);
+
+/*!
+ * @brief LPUART Error IRQ handle function.
+ *
+ * This function handles the LPUART error IRQ request.
+ *
+ * @param base LPUART peripheral base address.
+ * @param irqHandle LPUART handle pointer.
+ */
+void LPUART_TransferHandleErrorIRQ(LPUART_Type *base, void *irqHandle);
+
+/* @} */
+
+#if defined(__cplusplus)
+}
+#endif
+
+/*! @}*/
+
+#endif /* _FSL_LPUART_H_ */
diff --git a/ADIS_tinyK22_SplitFlap/source/IncludeMcuLibConfig.h b/ADIS_tinyK22_SplitFlap/source/IncludeMcuLibConfig.h
index d9a47fb..db1dba7 100644
--- a/ADIS_tinyK22_SplitFlap/source/IncludeMcuLibConfig.h
+++ b/ADIS_tinyK22_SplitFlap/source/IncludeMcuLibConfig.h
@@ -95,6 +95,13 @@ add_compile_options(-include "../config/IncludeMcuLibConfig.h")
   #define McuCriticalSection_CONFIG_USE_RTOS_CRITICAL_SECTION  (1) /* no native Extensa implementation yet */
 #endif
 #define McuULN2003_CONFIG_USE_ACCELERATION            (1)
+/* Mcu log */
+#define McuLog_CONFIG_IS_ENABLED	(1)
+/* Mcu Shell Uart*/
+#define McuShell_CONFIG_PROJECT_NAME_STRING "SPLITFLAP"
+#define McuLib_CONFIG_CPU_VARIANT 	McuLib_CONFIG_CPU_VARIANT_NXP_K22FN
+#define McuShellUart_CONFIG_UART	McuShellUart_CONFIG_UART_K22FN512_LPUART0_C3_C4
+#define McuShellUart_CONFIG_UART_GET_CLOCK_FREQ_SELECT	kCLOCK_PllFllSelClk
 /* ------------------- RTOS ---------------------------*/
 #define McuLib_CONFIG_SDK_USE_FREERTOS       (1)
 /* #define configUSE_SEGGER_SYSTEM_VIEWER_HOOKS (1) */
diff --git a/ADIS_tinyK22_SplitFlap/source/platform.c b/ADIS_tinyK22_SplitFlap/source/platform.c
index 70a684f..bca21f6 100644
--- a/ADIS_tinyK22_SplitFlap/source/platform.c
+++ b/ADIS_tinyK22_SplitFlap/source/platform.c
@@ -16,6 +16,8 @@
 #include "McuRTT.h"
 #include "McuShell.h"
 #include "shell.h"
+#include "McuShellUart.h"
+#include "McuLog.h"
 
 void PL_Init(void){
 
@@ -32,6 +34,8 @@ void PL_Init(void){
 	McuULN2003_Init();
 	McuRTT_Init();
 	McuShell_Init();
+	McuShellUart_Init();
+	McuLog_Init();
 	SHELL_Init();
 	SF_InitConfig();
 }
@@ -40,6 +44,8 @@ void PL_Init(void){
 void PL_Deinit(void){
 	SF_DeInitConfig();
 	SHELL_Deinit();
+	McuLog_Deinit();
+	McuShellUart_Deinit();
 	McuShell_Deinit();
 	McuRTT_Deinit();
 	McuULN2003_Deinit();
diff --git a/ADIS_tinyK22_SplitFlap/source/shell.c b/ADIS_tinyK22_SplitFlap/source/shell.c
index 94212e7..21b8256 100644
--- a/ADIS_tinyK22_SplitFlap/source/shell.c
+++ b/ADIS_tinyK22_SplitFlap/source/shell.c
@@ -7,14 +7,24 @@
 #include "platform.h"
 #include "Shell.h"
 #include "McuShell.h"
-#include "McuRTOS.h"
 #include "McuRTT.h"
 #include "McuArmTools.h"
 #include "McuShellUart.h"
 #include "McuLog.h"
 #include "McuUtility.h"
 
+#define SHELL_CMD_ELEM_SIZE	(sizeof(Shell_cmd_s))
+
+static QueueHandle_t shellCmdQueue;
+
 static uint8_t splitFlapId = 0;
+
+static void vQueueShellCmd(Shell_cmd_s shellCmd){
+	if(xQueueSendToBack(shellCmdQueue, &shellCmd, pdMS_TO_TICKS(100)) != pdPASS){
+		McuLog_warn("Failed adding shell cmd to queue, maybe full?");
+	}
+}
+
 static uint8_t ParseCommand(const uint8_t *cmd, bool *handled, McuShell_ConstStdIOType *io){
 	uint8_t size = sizeof(SHELL_CMD_IDENTIFY_SF)-1;
 	if (McuUtility_strcmp((char*)cmd, McuShell_CMD_HELP)==0) {
@@ -25,9 +35,8 @@ static uint8_t ParseCommand(const uint8_t *cmd, bool *handled, McuShell_ConstStd
 	    McuShell_SendHelpStr((unsigned char*)"  help", (const unsigned char*)"Print help this message\r\n", io->stdOut);
 	    McuShell_SendHelpStr((unsigned char*)SHELL_CMD_IDENTIFY_SF, (const unsigned char*)"<SplitFlapId> (uint8_t)\r\n", io->stdOut);
 	    McuShell_SendHelpStr((unsigned char*)" ", (const unsigned char*)"the number printed on the splitflap\r\n", io->stdOut);
-	    McuShell_SendHelpStr((unsigned char*)" ", (const unsigned char*)"Splitflap Number:16\n", io->stdOut);
-
-
+	    McuShell_SendHelpStr((unsigned char*)" ", (const unsigned char*)"Splitflap Number:16\r\n", io->stdOut);
+	    McuShell_SendHelpStr((unsigned char*)SHELL_CMD_POWEROFF_RPI, (const unsigned char*)"power of the raspberry pi\r\n", io->stdOut);
 	    *handled = TRUE;
 	    return ERR_OK;
 	  } else if(McuUtility_strncmp((char*)cmd, SHELL_CMD_IDENTIFY_SF, size) == 0){
@@ -37,7 +46,13 @@ static uint8_t ParseCommand(const uint8_t *cmd, bool *handled, McuShell_ConstStd
 			// Do not save id
 			return ERR_FAILED;
 		}
-	}
+		Shell_cmd_s shellCmd = {.shellCmd = Shell_Identify_SF, .value = (uint32_t)splitFlapId};
+		vQueueShellCmd(shellCmd);
+	  } else if(McuUtility_strcmp((char*)cmd,SHELL_CMD_POWEROFF_RPI) == 0){
+		  // shutown rpi
+		  Shell_cmd_s shellCmd = {.shellCmd = Shell_Powerof_rpi, .value = 0};
+		  vQueueShellCmd(shellCmd);
+	  }
 	return ERR_OK;
 
 }
@@ -58,11 +73,15 @@ typedef struct {
 
 static const SHELL_IODesc ios[] =
 {
-//  {&McuShellUart_stdio,  McuShellUart_DefaultShellBuffer,  sizeof(McuShellUart_DefaultShellBuffer)},
+  {&McuShellUart_stdio,  McuShellUart_DefaultShellBuffer,  sizeof(McuShellUart_DefaultShellBuffer)},
   {&McuRTT_stdio,  McuRTT_DefaultShellBuffer,  sizeof(McuRTT_DefaultShellBuffer)},
 //  {&USB_CdcStdio,  USB_CdcDefaultShellBuffer,  sizeof(USB_CdcDefaultShellBuffer)},
 };
 
+QueueHandle_t SHELL_GetShellCmdQueueHandle() {
+	return shellCmdQueue;
+}
+
 void SHELL_SendChar(unsigned char ch) {
   for(int i=0;i<sizeof(ios)/sizeof(ios[0]);i++) {
     McuShell_SendCh(ch, ios[i].stdio->stdOut);
@@ -111,8 +130,26 @@ void SHELL_Init(void) {
     McuLog_fatal("failed creating Shell task");
     for(;;){} /* error! probably out of memory */
   }
-  McuShell_SetStdio(McuRTT_GetStdio()); /* use RTT as the default */
-  vTaskStartScheduler();
+//  McuShell_SetStdio(McuRTT_GetStdio()); /* use RTT as the default */
+  if(McuShell_SetStdio(&McuShellUart_stdio) != ERR_OK){
+	  // couldnt set uart as stdio, try set RTT
+	  McuLog_warn("Failed to choose UART for shell, try RTT");
+	  if(McuShell_SetStdio(McuRTT_GetStdio())!= ERR_OK){ /* use RTT as the default */
+		  //couldnt set rtt!!
+		  McuLog_fatal("failed to set rtt as default for shell");
+		     for(;;){}
+	  }else{
+		  McuLog_info("RTT set for shell");
+	  }
+  }else{
+	  McuLog_info("UART set for shell");
+  }
+  shellCmdQueue = xQueueCreate(SHELL_CMD_QUEUE_LENGTH,SHELL_CMD_ELEM_SIZE);
+  if(shellCmdQueue == NULL){
+	  McuLog_fatal("failed to create shell cmd queue!");
+	  for(;;){}
+  }
+  vQueueAddToRegistry(shellCmdQueue, "Shell CMD Queue");
 }
 
 void SHELL_Deinit(void) {}
diff --git a/ADIS_tinyK22_SplitFlap/source/shell.h b/ADIS_tinyK22_SplitFlap/source/shell.h
index 52e81b2..15e5faf 100644
--- a/ADIS_tinyK22_SplitFlap/source/shell.h
+++ b/ADIS_tinyK22_SplitFlap/source/shell.h
@@ -8,13 +8,32 @@
 #define SHELL_H_
 
 #include "McuShell.h"
+#include "McuRTOS.h"
 
 #define SHELL_CMD_IDENTIFY_SF "Splitflap Number:"
+#define SHELL_CMD_POWEROFF_RPI "Shutdown RPI"
+
+#define SHELL_CMD_QUEUE_LENGTH 5
+
+
+typedef enum ShellCmd {
+	Shell_Identify_SF,
+	Shell_Powerof_rpi
+}Shell_cmd_t;
+
+typedef struct ShellCmd_s {
+	Shell_cmd_t shellCmd;
+	uint32_t value;
+}Shell_cmd_s;
+
+
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+QueueHandle_t SHELL_GetShellCmdQueueHandle();
+
 /*!
  * \brief Send a string to all supported I/Os
  * \param str String to send