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|
/*
** ###################################################################
** 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 <stdint.h>
#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_) */
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