1 /* 2 ** ################################################################### 3 ** Processors: MK22FN512CAP12 4 ** MK22FN512VDC12 5 ** MK22FN512VFX12 6 ** MK22FN512VLH12 7 ** MK22FN512VLL12 8 ** MK22FN512VMP12 9 ** 10 ** Compilers: Freescale C/C++ for Embedded ARM 11 ** GNU C Compiler 12 ** IAR ANSI C/C++ Compiler for ARM 13 ** Keil ARM C/C++ Compiler 14 ** MCUXpresso Compiler 15 ** 16 ** Reference manual: K22P121M120SF7RM, Rev. 1, March 24, 2014 17 ** Version: rev. 2.9, 2016-03-21 18 ** Build: b181105 19 ** 20 ** Abstract: 21 ** Provides a system configuration function and a global variable that 22 ** contains the system frequency. It configures the device and initializes 23 ** the oscillator (PLL) that is part of the microcontroller device. 24 ** 25 ** Copyright 2016 Freescale Semiconductor, Inc. 26 ** Copyright 2016-2018 NXP 27 ** All rights reserved. 28 ** 29 ** SPDX-License-Identifier: BSD-3-Clause 30 ** 31 ** http: www.nxp.com 32 ** mail: support@nxp.com 33 ** 34 ** Revisions: 35 ** - rev. 1.0 (2013-07-23) 36 ** Initial version. 37 ** - rev. 1.1 (2013-09-17) 38 ** RM rev. 0.4 update. 39 ** - rev. 2.0 (2013-10-29) 40 ** Register accessor macros added to the memory map. 41 ** Symbols for Processor Expert memory map compatibility added to the memory map. 42 ** Startup file for gcc has been updated according to CMSIS 3.2. 43 ** System initialization updated. 44 ** - rev. 2.1 (2013-10-30) 45 ** Definition of BITBAND macros updated to support peripherals with 32-bit acces disabled. 46 ** - rev. 2.2 (2013-12-20) 47 ** Update according to reference manual rev. 0.6, 48 ** - rev. 2.3 (2014-01-13) 49 ** Update according to reference manual rev. 0.61, 50 ** - rev. 2.4 (2014-02-10) 51 ** The declaration of clock configurations has been moved to separate header file system_MK22F51212.h 52 ** - rev. 2.5 (2014-05-06) 53 ** Update according to reference manual rev. 1.0, 54 ** Update of system and startup files. 55 ** Module access macro module_BASES replaced by module_BASE_PTRS. 56 ** - rev. 2.6 (2014-08-28) 57 ** Update of system files - default clock configuration changed. 58 ** Update of startup files - possibility to override DefaultISR added. 59 ** - rev. 2.7 (2014-10-14) 60 ** Interrupt INT_LPTimer renamed to INT_LPTMR0, interrupt INT_Watchdog renamed to INT_WDOG_EWM. 61 ** - rev. 2.8 (2015-02-19) 62 ** Renamed interrupt vector LLW to LLWU. 63 ** - rev. 2.9 (2016-03-21) 64 ** Added MK22FN512VFX12 part. 65 ** GPIO - renamed port instances: PTx -> GPIOx. 66 ** 67 ** ################################################################### 68 */ 69 70 /*! 71 * @file MK22F51212 72 * @version 2.9 73 * @date 2016-03-21 74 * @brief Device specific configuration file for MK22F51212 (header file) 75 * 76 * Provides a system configuration function and a global variable that contains 77 * the system frequency. It configures the device and initializes the oscillator 78 * (PLL) that is part of the microcontroller device. 79 */ 80 81 #ifndef _SYSTEM_MK22F51212_H_ 82 #define _SYSTEM_MK22F51212_H_ /**< Symbol preventing repeated inclusion */ 83 84 #ifdef __cplusplus 85 extern "C" { 86 #endif 87 88 #include <stdint.h> 89 90 91 #ifndef DISABLE_WDOG 92 #define DISABLE_WDOG 1 93 #endif 94 95 /* Define clock source values */ 96 97 #define CPU_XTAL_CLK_HZ 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */ 98 #define CPU_XTAL32k_CLK_HZ 32768u /* Value of the external 32k crystal or oscillator clock frequency in Hz */ 99 #define CPU_INT_SLOW_CLK_HZ 32768u /* Value of the slow internal oscillator clock frequency in Hz */ 100 #define CPU_INT_FAST_CLK_HZ 4000000u /* Value of the fast internal oscillator clock frequency in Hz */ 101 #define CPU_INT_IRC_CLK_HZ 48000000u /* Value of the 48M internal oscillator clock frequency in Hz */ 102 103 /* RTC oscillator setting */ 104 /* RTC_CR: SC2P=0,SC4P=0,SC8P=0,SC16P=0,CLKO=1,OSCE=1,WPS=0,UM=0,SUP=0,WPE=0,SWR=0 */ 105 #define SYSTEM_RTC_CR_VALUE 0x0300U /* RTC_CR */ 106 107 /* Low power mode enable */ 108 /* SMC_PMPROT: AHSRUN=1,AVLP=1,ALLS=1,AVLLS=1 */ 109 #define SYSTEM_SMC_PMPROT_VALUE 0xAAU /* SMC_PMPROT */ 110 111 #define DEFAULT_SYSTEM_CLOCK 20971520u /* Default System clock value */ 112 113 114 /** 115 * @brief System clock frequency (core clock) 116 * 117 * The system clock frequency supplied to the SysTick timer and the processor 118 * core clock. This variable can be used by the user application to setup the 119 * SysTick timer or configure other parameters. It may also be used by debugger to 120 * query the frequency of the debug timer or configure the trace clock speed 121 * SystemCoreClock is initialized with a correct predefined value. 122 */ 123 extern uint32_t SystemCoreClock; 124 125 /** 126 * @brief Setup the microcontroller system. 127 * 128 * Typically this function configures the oscillator (PLL) that is part of the 129 * microcontroller device. For systems with variable clock speed it also updates 130 * the variable SystemCoreClock. SystemInit is called from startup_device file. 131 */ 132 void SystemInit (void); 133 134 /** 135 * @brief Updates the SystemCoreClock variable. 136 * 137 * It must be called whenever the core clock is changed during program 138 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 139 * the current core clock. 140 */ 141 void SystemCoreClockUpdate (void); 142 143 /** 144 * @brief SystemInit function hook. 145 * 146 * This weak function allows to call specific initialization code during the 147 * SystemInit() execution.This can be used when an application specific code needs 148 * to be called as close to the reset entry as possible (for example the Multicore 149 * Manager MCMGR_EarlyInit() function call). 150 * NOTE: No global r/w variables can be used in this hook function because the 151 * initialization of these variables happens after this function. 152 */ 153 void SystemInitHook (void); 154 155 #ifdef __cplusplus 156 } 157 #endif 158 159 #endif /* _SYSTEM_MK22F51212_H_ */ 160
