/*********************************************************************************************************************** * This file was generated by the MCUXpresso Config Tools. Any manual edits made to this file * will be overwritten if the respective MCUXpresso Config Tools is used to update this file. **********************************************************************************************************************/ /* * How to setup clock using clock driver functions: * * 1. CLOCK_SetSimSafeDivs, to make sure core clock, bus clock, flexbus clock * and flash clock are in allowed range during clock mode switch. * * 2. Call CLOCK_Osc0Init to setup OSC clock, if it is used in target mode. * * 3. Set MCG configuration, MCG includes three parts: FLL clock, PLL clock and * internal reference clock(MCGIRCLK). Follow the steps to setup: * * 1). Call CLOCK_BootToXxxMode to set MCG to target mode. * * 2). If target mode is FBI/BLPI/PBI mode, the MCGIRCLK has been configured * correctly. For other modes, need to call CLOCK_SetInternalRefClkConfig * explicitly to setup MCGIRCLK. * * 3). Don't need to configure FLL explicitly, because if target mode is FLL * mode, then FLL has been configured by the function CLOCK_BootToXxxMode, * if the target mode is not FLL mode, the FLL is disabled. * * 4). If target mode is PEE/PBE/PEI/PBI mode, then the related PLL has been * setup by CLOCK_BootToXxxMode. In FBE/FBI/FEE/FBE mode, the PLL could * be enabled independently, call CLOCK_EnablePll0 explicitly in this case. * * 4. Call CLOCK_SetSimConfig to set the clock configuration in SIM. */ /* clang-format off */ /* TEXT BELOW IS USED AS SETTING FOR TOOLS ************************************* !!GlobalInfo product: Clocks v7.0 processor: MK22FN512xxx12 package_id: MK22FN512VLH12 mcu_data: ksdk2_0 processor_version: 9.0.0 * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/ /* clang-format on */ #include "clock_config.h" /******************************************************************************* * Definitions ******************************************************************************/ #define MCG_IRCLK_DISABLE 0U /*!< MCGIRCLK disabled */ #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_OSC32KSEL_OSC32KCLK_CLK 0U /*!< OSC32KSEL select: OSC32KCLK clock */ #define SIM_PLLFLLSEL_MCGFLLCLK_CLK 0U /*!< PLLFLL select: MCGFLLCLK clock */ /******************************************************************************* * Variables ******************************************************************************/ /* System clock frequency. */ extern uint32_t SystemCoreClock; /******************************************************************************* * Code ******************************************************************************/ /*FUNCTION********************************************************************** * * Function Name : CLOCK_CONFIG_SetFllExtRefDiv * Description : Configure FLL external reference divider (FRDIV). * Param frdiv : The value to set FRDIV. * *END**************************************************************************/ static void CLOCK_CONFIG_SetFllExtRefDiv(uint8_t frdiv) { MCG->C1 = ((MCG->C1 & ~MCG_C1_FRDIV_MASK) | MCG_C1_FRDIV(frdiv)); } /******************************************************************************* ************************ BOARD_InitBootClocks function ************************ ******************************************************************************/ void BOARD_InitBootClocks(void) { BOARD_BootClockRUN(); } /******************************************************************************* ********************** Configuration BOARD_BootClockRUN *********************** ******************************************************************************/ /* clang-format off */ /* TEXT BELOW IS USED AS SETTING FOR TOOLS ************************************* !!Configuration name: BOARD_BootClockRUN called_from_default_init: true outputs: - {id: Bus_clock.outFreq, value: 20 MHz} - {id: Core_clock.outFreq, value: 20 MHz} - {id: Flash_clock.outFreq, value: 10 MHz} - {id: FlexBus_clock.outFreq, value: 10 MHz} - {id: LPO_clock.outFreq, value: 1 kHz} - {id: MCGFFCLK.outFreq, value: 250 kHz} - {id: System_clock.outFreq, value: 20 MHz} settings: - {id: MCGMode, value: PEE} - {id: MCG.FRDIV.scale, value: '32'} - {id: MCG.IREFS.sel, value: MCG.SLOW_IRCLK} - {id: MCG.PLLS.sel, value: MCG.FLL} - {id: MCG.PRDIV.scale, value: '2'} - {id: MCG.VDIV.scale, value: '25'} - {id: MCG_C2_OSC_MODE_CFG, value: ModeOscLowPower} - {id: MCG_C2_RANGE0_CFG, value: High} - {id: MCG_C2_RANGE0_FRDIV_CFG, value: High} - {id: SIM.OUTDIV1.scale, value: '5'} - {id: SIM.OUTDIV2.scale, value: '5'} - {id: SIM.OUTDIV3.scale, value: '10'} - {id: SIM.OUTDIV4.scale, value: '10'} sources: - {id: OSC.OSC.outFreq, value: 8 MHz, enabled: true} * BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/ /* clang-format on */ /******************************************************************************* * Variables for BOARD_BootClockRUN configuration ******************************************************************************/ const mcg_config_t mcgConfig_BOARD_BootClockRUN = { .mcgMode = kMCG_ModePEE, /* PEE - PLL Engaged External */ .irclkEnableMode = MCG_IRCLK_DISABLE, /* MCGIRCLK disabled */ .ircs = kMCG_IrcSlow, /* Slow internal reference clock selected */ .fcrdiv = 0x1U, /* Fast IRC divider: divided by 2 */ .frdiv = 0x0U, /* FLL reference clock divider: divided by 32 */ .drs = kMCG_DrsLow, /* Low frequency range */ .dmx32 = kMCG_Dmx32Default, /* DCO has a default range of 25% */ .oscsel = kMCG_OscselOsc, /* Selects System Oscillator (OSCCLK) */ .pll0Config = { .enableMode = MCG_PLL_DISABLE, /* MCGPLLCLK disabled */ .prdiv = 0x1U, /* PLL Reference divider: divided by 2 */ .vdiv = 0x1U, /* VCO divider: multiplied by 25 */ }, }; const sim_clock_config_t simConfig_BOARD_BootClockRUN = { .pllFllSel = SIM_PLLFLLSEL_MCGFLLCLK_CLK, /* PLLFLL select: MCGFLLCLK clock */ .er32kSrc = SIM_OSC32KSEL_OSC32KCLK_CLK, /* OSC32KSEL select: OSC32KCLK clock */ .clkdiv1 = 0x44990000U, /* SIM_CLKDIV1 - OUTDIV1: /5, OUTDIV2: /5, OUTDIV3: /10, OUTDIV4: /10 */ }; const osc_config_t oscConfig_BOARD_BootClockRUN = { .freq = 8000000U, /* Oscillator frequency: 8000000Hz */ .capLoad = (OSC_CAP0P), /* Oscillator capacity load: 0pF */ .workMode = kOSC_ModeOscLowPower, /* Oscillator low power */ .oscerConfig = { .enableMode = OSC_ER_CLK_DISABLE, /* Disable external reference clock */ .erclkDiv = 0, /* Divider for OSCERCLK: divided by 1 */ } }; /******************************************************************************* * Code for BOARD_BootClockRUN configuration ******************************************************************************/ void BOARD_BootClockRUN(void) { /* Set the system clock dividers in SIM to safe value. */ CLOCK_SetSimSafeDivs(); /* Initializes OSC0 according to board configuration. */ CLOCK_InitOsc0(&oscConfig_BOARD_BootClockRUN); CLOCK_SetXtal0Freq(oscConfig_BOARD_BootClockRUN.freq); /* Configure FLL external reference divider (FRDIV). */ CLOCK_CONFIG_SetFllExtRefDiv(mcgConfig_BOARD_BootClockRUN.frdiv); /* Set MCG to PEE mode. */ CLOCK_BootToPeeMode(mcgConfig_BOARD_BootClockRUN.oscsel, kMCG_PllClkSelPll0, &mcgConfig_BOARD_BootClockRUN.pll0Config); /* Set the clock configuration in SIM module. */ CLOCK_SetSimConfig(&simConfig_BOARD_BootClockRUN); /* Set SystemCoreClock variable. */ SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK; }