/* ** ################################################################### ** Compilers: Keil ARM C/C++ Compiler ** Freescale C/C++ for Embedded ARM ** GNU C Compiler ** GNU C Compiler - CodeSourcery Sourcery G++ ** IAR ANSI C/C++ Compiler for ARM ** ** Reference manual: K22P121M120SF7RM, Rev. 1, March 24, 2014 ** Version: rev. 2.5, 2014-05-06 ** Build: b140611 ** ** Abstract: ** Provides a system configuration function and a global variable that ** contains the system frequency. It configures the device and initializes ** the oscillator (PLL) that is part of the microcontroller device. ** ** Copyright (c) 2014 Freescale Semiconductor, Inc. ** All rights reserved. ** ** Redistribution and use in source and binary forms, with or without modification, ** are permitted provided that the following conditions are met: ** ** o Redistributions of source code must retain the above copyright notice, this list ** of conditions and the following disclaimer. ** ** o Redistributions in binary form must reproduce the above copyright notice, this ** list of conditions and the following disclaimer in the documentation and/or ** other materials provided with the distribution. ** ** o Neither the name of Freescale Semiconductor, Inc. nor the names of its ** contributors may be used to endorse or promote products derived from this ** software without specific prior written permission. ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED ** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE ** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ** ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; ** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ** ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS ** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ** ** http: www.freescale.com ** mail: support@freescale.com ** ** Revisions: ** - rev. 1.0 (2013-07-23) ** Initial version. ** - rev. 1.1 (2013-09-17) ** RM rev. 0.4 update. ** - rev. 2.0 (2013-10-29) ** Register accessor macros added to the memory map. ** Symbols for Processor Expert memory map compatibility added to the memory map. ** Startup file for gcc has been updated according to CMSIS 3.2. ** System initialization updated. ** - rev. 2.1 (2013-10-30) ** Definition of BITBAND macros updated to support peripherals with 32-bit acces disabled. ** - rev. 2.2 (2013-12-20) ** Update according to reference manual rev. 0.6, ** - rev. 2.3 (2014-01-13) ** Update according to reference manual rev. 0.61, ** - rev. 2.4 (2014-02-10) ** The declaration of clock configurations has been moved to separate header file system_MK22F51212.h ** - rev. 2.5 (2014-05-06) ** Update according to reference manual rev. 1.0, ** Update of system and startup files. ** Module access macro module_BASES replaced by module_BASE_PTRS. ** ** ################################################################### */ /*! * @file MK22F51212 * @version 2.5 * @date 2014-05-06 * @brief Device specific configuration file for MK22F51212 (header file) * * Provides a system configuration function and a global variable that contains * the system frequency. It configures the device and initializes the oscillator * (PLL) that is part of the microcontroller device. */ #ifndef SYSTEM_MK22F51212_H_ #define SYSTEM_MK22F51212_H_ /**< Symbol preventing repeated inclusion */ #ifdef __cplusplus extern "C" { #endif #include #define DISABLE_WDOG 1 #ifndef CLOCK_SETUP #define CLOCK_SETUP 4 #endif /* MCG mode constants */ #define MCG_MODE_FEI 0U #define MCG_MODE_FBI 1U #define MCG_MODE_BLPI 2U #define MCG_MODE_FEE 3U #define MCG_MODE_FBE 4U #define MCG_MODE_BLPE 5U #define MCG_MODE_PBE 6U #define MCG_MODE_PEE 7U /* Predefined clock setups 0 ... Default part configuration Multipurpose Clock Generator (MCG) in FEI mode. Reference clock source for MCG module: Slow internal reference clock Core clock = 20.97152MHz Bus clock = 20.97152MHz 1 ... Maximum achievable clock frequency configuration Multipurpose Clock Generator (MCG) in PEE mode. Reference clock source for MCG module: System oscillator 0 reference clock Core clock = 120MHz Bus clock = 60MHz 2 ... Chip internaly clocked, ready for Very Low Power Run mode. Multipurpose Clock Generator (MCG) in BLPI mode. Reference clock source for MCG module: Fast internal reference clock Core clock = 4MHz Bus clock = 4MHz 3 ... Chip externally clocked, ready for Very Low Power Run mode. Multipurpose Clock Generator (MCG) in BLPE mode. Reference clock source for MCG module: System oscillator 0 reference clock Core clock = 4MHz Bus clock = 4MHz 4 ... USB clock setup Multipurpose Clock Generator (MCG) in PEE mode. Reference clock source for MCG module: System oscillator 0 reference clock Core clock = 120MHz Bus clock = 60MHz 5 ... Maximum achievable clock frequency configuration in RUN mode Multipurpose Clock Generator (MCG) in PEE mode. Reference clock source for MCG module: System oscillator 0 reference clock Core clock = 80MHz Bus clock = 40MHz */ /* Define clock source values */ #define CPU_XTAL_CLK_HZ 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */ #define CPU_XTAL32k_CLK_HZ 32768u /* Value of the external 32k crystal or oscillator clock frequency in Hz */ #define CPU_INT_SLOW_CLK_HZ 32768u /* Value of the slow internal oscillator clock frequency in Hz */ #define CPU_INT_FAST_CLK_HZ 4000000u /* Value of the fast internal oscillator clock frequency in Hz */ #define CPU_INT_IRC_CLK_HZ 48000000u /* Value of the 48M internal oscillator clock frequency in Hz */ /* RTC oscillator setting */ /* RTC_CR: SC2P=0,SC4P=0,SC8P=0,SC16P=0,CLKO=1,OSCE=1,WPS=0,UM=0,SUP=0,WPE=0,SWR=0 */ #define SYSTEM_RTC_CR_VALUE 0x0300U /* RTC_CR */ /* Low power mode enable */ /* SMC_PMPROT: AHSRUN=1,AVLP=1,ALLS=1,AVLLS=1 */ #define SYSTEM_SMC_PMPROT_VALUE 0xAAU /* SMC_PMPROT */ /* Internal reference clock trim */ /* #undef SLOW_TRIM_ADDRESS */ /* Slow oscillator not trimmed. Commented out for MISRA compliance. */ /* #undef SLOW_FINE_TRIM_ADDRESS */ /* Slow oscillator not trimmed. Commented out for MISRA compliance. */ /* #undef FAST_TRIM_ADDRESS */ /* Fast oscillator not trimmed. Commented out for MISRA compliance. */ /* #undef FAST_FINE_TRIM_ADDRESS */ /* Fast oscillator not trimmed. Commented out for MISRA compliance. */ #if (CLOCK_SETUP == 0) #define DEFAULT_SYSTEM_CLOCK 20971520u /* Default System clock value */ #define MCG_MODE MCG_MODE_FEI /* Clock generator mode */ /* MCG_C1: CLKS=0,FRDIV=0,IREFS=1,IRCLKEN=1,IREFSTEN=0 */ #define SYSTEM_MCG_C1_VALUE 0x06U /* MCG_C1 */ /* MCG_C2: LOCRE0=0,FCFTRIM=0,RANGE=2,HGO=0,EREFS=1,LP=0,IRCS=0 */ #define SYSTEM_MCG_C2_VALUE 0x24U /* MCG_C2 */ /* MCG_C4: DMX32=0,DRST_DRS=0,FCTRIM=0,SCFTRIM=0 */ #define SYSTEM_MCG_C4_VALUE 0x00U /* MCG_C4 */ /* MCG_SC: ATME=0,ATMS=0,ATMF=0,FLTPRSRV=0,FCRDIV=0,LOCS0=0 */ #define SYSTEM_MCG_SC_VALUE 0x00U /* MCG_SC */ /* MCG_C5: PLLCLKEN0=0,PLLSTEN0=0,PRDIV0=0 */ #define SYSTEM_MCG_C5_VALUE 0x00U /* MCG_C5 */ /* MCG_C6: LOLIE0=0,PLLS=0,CME0=0,VDIV0=0 */ #define SYSTEM_MCG_C6_VALUE 0x00U /* MCG_C6 */ /* MCG_C7: OSCSEL=0 */ #define SYSTEM_MCG_C7_VALUE 0x00U /* MCG_C7 */ /* OSC_CR: ERCLKEN=0,EREFSTEN=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */ #define SYSTEM_OSC_CR_VALUE 0x00U /* OSC_CR */ /* SMC_PMCTRL: RUNM=0,STOPA=0,STOPM=0 */ #define SYSTEM_SMC_PMCTRL_VALUE 0x00U /* SMC_PMCTRL */ /* SIM_CLKDIV1: OUTDIV1=0,OUTDIV2=0,OUTDIV3=1,OUTDIV4=1 */ #define SYSTEM_SIM_CLKDIV1_VALUE 0x00110000U /* SIM_CLKDIV1 */ /* SIM_SOPT1: USBREGEN=0,USBSSTBY=0,USBVSTBY=0,OSC32KSEL=2,OSC32KOUT=0,RAMSIZE=0 */ #define SYSTEM_SIM_SOPT1_VALUE 0x00080000U /* SIM_SOPT1 */ /* SIM_SOPT2: LPUARTSRC=0,USBSRC=0,PLLFLLSEL=0,TRACECLKSEL=0,FBSL=0,CLKOUTSEL=0,RTCCLKOUTSEL=0 */ #define SYSTEM_SIM_SOPT2_VALUE 0x00U /* SIM_SOPT2 */ #elif (CLOCK_SETUP == 1) #define DEFAULT_SYSTEM_CLOCK 120000000u /* Default System clock value */ #define MCG_MODE MCG_MODE_PEE /* Clock generator mode */ /* MCG_C1: CLKS=0,FRDIV=3,IREFS=0,IRCLKEN=1,IREFSTEN=0 */ #define SYSTEM_MCG_C1_VALUE 0x1AU /* MCG_C1 */ /* MCG_C2: LOCRE0=0,FCFTRIM=0,RANGE=2,HGO=0,EREFS=1,LP=0,IRCS=0 */ #define SYSTEM_MCG_C2_VALUE 0x24U /* MCG_C2 */ /* MCG_C4: DMX32=0,DRST_DRS=0,FCTRIM=0,SCFTRIM=0 */ #define SYSTEM_MCG_C4_VALUE 0x00U /* MCG_C4 */ /* MCG_SC: ATME=0,ATMS=0,ATMF=0,FLTPRSRV=0,FCRDIV=0,LOCS0=0 */ #define SYSTEM_MCG_SC_VALUE 0x00U /* MCG_SC */ /* MCG_C5: PLLCLKEN0=0,PLLSTEN0=0,PRDIV0=1 */ #define SYSTEM_MCG_C5_VALUE 0x01U /* MCG_C5 */ /* MCG_C6: LOLIE0=0,PLLS=1,CME0=0,VDIV0=6 */ #define SYSTEM_MCG_C6_VALUE 0x46U /* MCG_C6 */ /* MCG_C7: OSCSEL=0 */ #define SYSTEM_MCG_C7_VALUE 0x00U /* MCG_C7 */ /* OSC_CR: ERCLKEN=1,EREFSTEN=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */ #define SYSTEM_OSC_CR_VALUE 0x80U /* OSC_CR */ /* SMC_PMCTRL: RUNM=3,STOPA=0,STOPM=0 */ #define SYSTEM_SMC_PMCTRL_VALUE 0x60U /* SMC_PMCTRL */ /* SIM_CLKDIV1: OUTDIV1=0,OUTDIV2=1,OUTDIV3=1,OUTDIV4=4 */ #define SYSTEM_SIM_CLKDIV1_VALUE 0x01140000U /* SIM_CLKDIV1 */ /* SIM_SOPT1: USBREGEN=0,USBSSTBY=0,USBVSTBY=0,OSC32KSEL=2,OSC32KOUT=0,RAMSIZE=0 */ #define SYSTEM_SIM_SOPT1_VALUE 0x00080000U /* SIM_SOPT1 */ /* SIM_SOPT2: LPUARTSRC=0,USBSRC=0,PLLFLLSEL=1,TRACECLKSEL=0,FBSL=0,CLKOUTSEL=0,RTCCLKOUTSEL=0 */ #define SYSTEM_SIM_SOPT2_VALUE 0x00010000U /* SIM_SOPT2 */ #elif (CLOCK_SETUP == 2) #define DEFAULT_SYSTEM_CLOCK 4000000u /* Default System clock value */ #define MCG_MODE MCG_MODE_BLPI /* Clock generator mode */ /* MCG_C1: CLKS=1,FRDIV=0,IREFS=1,IRCLKEN=1,IREFSTEN=0 */ #define SYSTEM_MCG_C1_VALUE 0x46U /* MCG_C1 */ /* MCG_C2: LOCRE0=0,FCFTRIM=0,RANGE=2,HGO=0,EREFS=1,LP=1,IRCS=1 */ #define SYSTEM_MCG_C2_VALUE 0x27U /* MCG_C2 */ /* MCG_C4: DMX32=0,DRST_DRS=0,FCTRIM=0,SCFTRIM=0 */ #define SYSTEM_MCG_C4_VALUE 0x00U /* MCG_C4 */ /* MCG_SC: ATME=0,ATMS=0,ATMF=0,FLTPRSRV=0,FCRDIV=0,LOCS0=0 */ #define SYSTEM_MCG_SC_VALUE 0x00U /* MCG_SC */ /* MCG_C5: PLLCLKEN0=0,PLLSTEN0=0,PRDIV0=0 */ #define SYSTEM_MCG_C5_VALUE 0x00U /* MCG_C5 */ /* MCG_C6: LOLIE0=0,PLLS=0,CME0=0,VDIV0=0 */ #define SYSTEM_MCG_C6_VALUE 0x00U /* MCG_C6 */ /* MCG_C7: OSCSEL=0 */ #define SYSTEM_MCG_C7_VALUE 0x00U /* MCG_C7 */ /* OSC_CR: ERCLKEN=1,EREFSTEN=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */ #define SYSTEM_OSC_CR_VALUE 0x80U /* OSC_CR */ /* SMC_PMCTRL: RUNM=0,STOPA=0,STOPM=0 */ #define SYSTEM_SMC_PMCTRL_VALUE 0x00U /* SMC_PMCTRL */ /* SIM_CLKDIV1: OUTDIV1=0,OUTDIV2=0,OUTDIV3=0,OUTDIV4=4 */ #define SYSTEM_SIM_CLKDIV1_VALUE 0x00040000U /* SIM_CLKDIV1 */ /* SIM_SOPT1: USBREGEN=0,USBSSTBY=0,USBVSTBY=0,OSC32KSEL=2,OSC32KOUT=0,RAMSIZE=0 */ #define SYSTEM_SIM_SOPT1_VALUE 0x00080000U /* SIM_SOPT1 */ /* SIM_SOPT2: LPUARTSRC=0,USBSRC=0,PLLFLLSEL=3,TRACECLKSEL=0,FBSL=0,CLKOUTSEL=0,RTCCLKOUTSEL=0 */ #define SYSTEM_SIM_SOPT2_VALUE 0x00030000U /* SIM_SOPT2 */ #elif (CLOCK_SETUP == 3) #define DEFAULT_SYSTEM_CLOCK 4000000u /* Default System clock value */ #define MCG_MODE MCG_MODE_BLPE /* Clock generator mode */ /* MCG_C1: CLKS=2,FRDIV=3,IREFS=0,IRCLKEN=1,IREFSTEN=0 */ #define SYSTEM_MCG_C1_VALUE 0x9AU /* MCG_C1 */ /* MCG_C2: LOCRE0=0,FCFTRIM=0,RANGE=2,HGO=0,EREFS=1,LP=1,IRCS=1 */ #define SYSTEM_MCG_C2_VALUE 0x27U /* MCG_C2 */ /* MCG_C4: DMX32=0,DRST_DRS=0,FCTRIM=0,SCFTRIM=0 */ #define SYSTEM_MCG_C4_VALUE 0x00U /* MCG_C4 */ /* MCG_SC: ATME=0,ATMS=0,ATMF=0,FLTPRSRV=0,FCRDIV=1,LOCS0=0 */ #define SYSTEM_MCG_SC_VALUE 0x02U /* MCG_SC */ /* MCG_C5: PLLCLKEN0=0,PLLSTEN0=0,PRDIV0=0 */ #define SYSTEM_MCG_C5_VALUE 0x00U /* MCG_C5 */ /* MCG_C6: LOLIE0=0,PLLS=0,CME0=0,VDIV0=0 */ #define SYSTEM_MCG_C6_VALUE 0x00U /* MCG_C6 */ /* MCG_C7: OSCSEL=0 */ #define SYSTEM_MCG_C7_VALUE 0x00U /* MCG_C7 */ /* OSC_CR: ERCLKEN=0,EREFSTEN=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */ #define SYSTEM_OSC_CR_VALUE 0x00U /* OSC_CR */ /* SMC_PMCTRL: RUNM=0,STOPA=0,STOPM=0 */ #define SYSTEM_SMC_PMCTRL_VALUE 0x00U /* SMC_PMCTRL */ /* SIM_CLKDIV1: OUTDIV1=1,OUTDIV2=1,OUTDIV3=1,OUTDIV4=7 */ #define SYSTEM_SIM_CLKDIV1_VALUE 0x11170000U /* SIM_CLKDIV1 */ /* SIM_SOPT1: USBREGEN=0,USBSSTBY=0,USBVSTBY=0,OSC32KSEL=2,OSC32KOUT=0,RAMSIZE=0 */ #define SYSTEM_SIM_SOPT1_VALUE 0x00080000U /* SIM_SOPT1 */ /* SIM_SOPT2: LPUARTSRC=0,USBSRC=0,PLLFLLSEL=3,TRACECLKSEL=0,FBSL=0,CLKOUTSEL=0,RTCCLKOUTSEL=0 */ #define SYSTEM_SIM_SOPT2_VALUE 0x00030000U /* SIM_SOPT2 */ #elif (CLOCK_SETUP == 4) #define DEFAULT_SYSTEM_CLOCK 120000000u /* Default System clock value */ #define MCG_MODE MCG_MODE_PEE /* Clock generator mode */ /* MCG_C1: CLKS=0,FRDIV=3,IREFS=0,IRCLKEN=1,IREFSTEN=0 */ #define SYSTEM_MCG_C1_VALUE 0x1AU /* MCG_C1 */ /* MCG_C2: LOCRE0=0,FCFTRIM=0,RANGE=2,HGO=0,EREFS=1,LP=0,IRCS=0 */ #define SYSTEM_MCG_C2_VALUE 0x24U /* MCG_C2 */ /* MCG_C4: DMX32=0,DRST_DRS=0,FCTRIM=0,SCFTRIM=0 */ #define SYSTEM_MCG_C4_VALUE 0x00U /* MCG_C4 */ /* MCG_SC: ATME=0,ATMS=0,ATMF=0,FLTPRSRV=0,FCRDIV=0,LOCS0=0 */ #define SYSTEM_MCG_SC_VALUE 0x00U /* MCG_SC */ /* MCG_C5: PLLCLKEN0=0,PLLSTEN0=0,PRDIV0=1 */ #define SYSTEM_MCG_C5_VALUE 0x01U /* MCG_C5 */ /* MCG_C6: LOLIE0=0,PLLS=1,CME0=0,VDIV0=6 */ #define SYSTEM_MCG_C6_VALUE 0x46U /* MCG_C6 */ /* MCG_C7: OSCSEL=0 */ #define SYSTEM_MCG_C7_VALUE 0x00U /* MCG_C7 */ /* OSC_CR: ERCLKEN=1,EREFSTEN=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */ #define SYSTEM_OSC_CR_VALUE 0x80U /* OSC_CR */ /* SMC_PMCTRL: RUNM=3,STOPA=0,STOPM=0 */ #define SYSTEM_SMC_PMCTRL_VALUE 0x60U /* SMC_PMCTRL */ /* SIM_CLKDIV1: OUTDIV1=0,OUTDIV2=1,OUTDIV3=1,OUTDIV4=4 */ #define SYSTEM_SIM_CLKDIV1_VALUE 0x01140000U /* SIM_CLKDIV1 */ /* SIM_CLKDIV2: USBDIV=4,USBFRAC=1 */ #define SYSTEM_SIM_CLKDIV2_VALUE 0x09U /* SIM_CLKDIV2 */ /* SIM_SOPT1: USBREGEN=0,USBSSTBY=0,USBVSTBY=0,OSC32KSEL=2,OSC32KOUT=0,RAMSIZE=0 */ #define SYSTEM_SIM_SOPT1_VALUE 0x00080000U /* SIM_SOPT1 */ /* SIM_SOPT2: LPUARTSRC=0,USBSRC=0,PLLFLLSEL=1,TRACECLKSEL=0,FBSL=0,CLKOUTSEL=0,RTCCLKOUTSEL=0 */ #define SYSTEM_SIM_SOPT2_VALUE 0x00010000U /* SIM_SOPT2 */ #elif (CLOCK_SETUP == 5) #define DEFAULT_SYSTEM_CLOCK 80000000u /* Default System clock value */ #define MCG_MODE MCG_MODE_PEE /* Clock generator mode */ /* MCG_C1: CLKS=0,FRDIV=3,IREFS=0,IRCLKEN=1,IREFSTEN=0 */ #define SYSTEM_MCG_C1_VALUE 0x1AU /* MCG_C1 */ /* MCG_C2: LOCRE0=0,FCFTRIM=0,RANGE=2,HGO=0,EREFS=1,LP=0,IRCS=0 */ #define SYSTEM_MCG_C2_VALUE 0x24U /* MCG_C2 */ /* MCG_C4: DMX32=0,DRST_DRS=0,FCTRIM=0,SCFTRIM=0 */ #define SYSTEM_MCG_C4_VALUE 0x00U /* MCG_C4 */ /* MCG_SC: ATME=0,ATMS=0,ATMF=0,FLTPRSRV=0,FCRDIV=0,LOCS0=0 */ #define SYSTEM_MCG_SC_VALUE 0x00U /* MCG_SC */ /* MCG_C5: PLLCLKEN0=0,PLLSTEN0=0,PRDIV0=3 */ #define SYSTEM_MCG_C5_VALUE 0x03U /* MCG_C5 */ /* MCG_C6: LOLIE0=0,PLLS=1,CME0=0,VDIV0=0x10 */ #define SYSTEM_MCG_C6_VALUE 0x50U /* MCG_C6 */ /* MCG_C7: OSCSEL=0 */ #define SYSTEM_MCG_C7_VALUE 0x00U /* MCG_C7 */ /* OSC_CR: ERCLKEN=1,EREFSTEN=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */ #define SYSTEM_OSC_CR_VALUE 0x80U /* OSC_CR */ /* SMC_PMCTRL: RUNM=0,STOPA=0,STOPM=0 */ #define SYSTEM_SMC_PMCTRL_VALUE 0x00U /* SMC_PMCTRL */ /* SIM_CLKDIV1: OUTDIV1=0,OUTDIV2=1,OUTDIV3=1,OUTDIV4=3 */ #define SYSTEM_SIM_CLKDIV1_VALUE 0x01130000U /* SIM_CLKDIV1 */ /* SIM_SOPT1: USBREGEN=0,USBSSTBY=0,USBVSTBY=0,OSC32KSEL=2,OSC32KOUT=0,RAMSIZE=0 */ #define SYSTEM_SIM_SOPT1_VALUE 0x00080000U /* SIM_SOPT1 */ /* SIM_SOPT2: LPUARTSRC=0,USBSRC=0,PLLFLLSEL=1,TRACECLKSEL=0,FBSL=0,CLKOUTSEL=0,RTCCLKOUTSEL=0 */ #define SYSTEM_SIM_SOPT2_VALUE 0x00010000U /* SIM_SOPT2 */ #endif /** * @brief System clock frequency (core clock) * * The system clock frequency supplied to the SysTick timer and the processor * core clock. This variable can be used by the user application to setup the * SysTick timer or configure other parameters. It may also be used by debugger to * query the frequency of the debug timer or configure the trace clock speed * SystemCoreClock is initialized with a correct predefined value. */ extern uint32_t SystemCoreClock; /** * @brief Setup the microcontroller system. * * Typically this function configures the oscillator (PLL) that is part of the * microcontroller device. For systems with variable clock speed it also updates * the variable SystemCoreClock. SystemInit is called from startup_device file. */ void SystemInit (void); /** * @brief Updates the SystemCoreClock variable. * * It must be called whenever the core clock is changed during program * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates * the current core clock. */ void SystemCoreClockUpdate (void); #ifdef __cplusplus } #endif #endif /* #if !defined(SYSTEM_MK22F51212_H_) */