1 /* 2 ** ################################################################### 3 ** Processors: MK22FN128CAH12 4 ** MK22FN256CAH12 5 ** MK22FN256VDC12 6 ** MK22FN256VLH12 7 ** MK22FN256VLL12 8 ** MK22FN256VMP12 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: K22P121M120SF8RM, Rev. 1, March 24, 2014 17 ** Version: rev. 1.8, 2015-02-19 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 (2013-09-17) 36 ** Initial version. 37 ** - rev. 1.1 (2013-10-29) 38 ** Definition of BITBAND macros updated to support peripherals with 32-bit acces disabled. 39 ** - rev. 1.2 (2013-12-20) 40 ** Update according to reference manual rev. 0.6, 41 ** - rev. 1.3 (2014-02-06) 42 ** Update according to reference manual rev. 0.61, 43 ** - rev. 1.4 (2014-02-10) 44 ** The declaration of clock configurations has been moved to separate header file system_MK22F25612.h 45 ** - rev. 1.5 (2014-04-30) 46 ** Update of MCM and USB modules according to the RM rev. 1. 47 ** Update of system and startup files. 48 ** Module access macro module_BASES replaced by module_BASE_PTRS. 49 ** - rev. 1.6 (2014-08-28) 50 ** Update of system files - default clock configuration changed. 51 ** Update of startup files - possibility to override DefaultISR added. 52 ** - rev. 1.7 (2014-10-14) 53 ** Interrupt INT_LPTimer renamed to INT_LPTMR0, interrupt INT_Watchdog renamed to INT_WDOG_EWM. 54 ** - rev. 1.8 (2015-02-19) 55 ** Renamed interrupt vector LLW to LLWU. 56 ** 57 ** ################################################################### 58 */ 59 60 /*! 61 * @file MK22F25612 62 * @version 1.8 63 * @date 2015-02-19 64 * @brief Device specific configuration file for MK22F25612 (header file) 65 * 66 * Provides a system configuration function and a global variable that contains 67 * the system frequency. It configures the device and initializes the oscillator 68 * (PLL) that is part of the microcontroller device. 69 */ 70 71 #ifndef _SYSTEM_MK22F25612_H_ 72 #define _SYSTEM_MK22F25612_H_ /**< Symbol preventing repeated inclusion */ 73 74 #ifdef __cplusplus 75 extern "C" { 76 #endif 77 78 #include <stdint.h> 79 80 81 #ifndef DISABLE_WDOG 82 #define DISABLE_WDOG 1 83 #endif 84 85 /* Define clock source values */ 86 87 #define CPU_XTAL_CLK_HZ 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */ 88 #define CPU_XTAL32k_CLK_HZ 32768u /* Value of the external 32k crystal or oscillator clock frequency in Hz */ 89 #define CPU_INT_SLOW_CLK_HZ 32768u /* Value of the slow internal oscillator clock frequency in Hz */ 90 #define CPU_INT_FAST_CLK_HZ 4000000u /* Value of the fast internal oscillator clock frequency in Hz */ 91 #define CPU_INT_IRC_CLK_HZ 48000000u /* Value of the 48M internal oscillator clock frequency in Hz */ 92 93 /* RTC oscillator setting */ 94 /* RTC_CR: SC2P=0,SC4P=0,SC8P=0,SC16P=0,CLKO=1,OSCE=1,WPS=0,UM=0,SUP=0,WPE=0,SWR=0 */ 95 #define SYSTEM_RTC_CR_VALUE 0x0300U /* RTC_CR */ 96 97 /* Low power mode enable */ 98 /* SMC_PMPROT: AHSRUN=1,AVLP=1,ALLS=1,AVLLS=1 */ 99 #define SYSTEM_SMC_PMPROT_VALUE 0xAAU /* SMC_PMPROT */ 100 101 #define DEFAULT_SYSTEM_CLOCK 20971520u /* Default System clock value */ 102 103 104 /** 105 * @brief System clock frequency (core clock) 106 * 107 * The system clock frequency supplied to the SysTick timer and the processor 108 * core clock. This variable can be used by the user application to setup the 109 * SysTick timer or configure other parameters. It may also be used by debugger to 110 * query the frequency of the debug timer or configure the trace clock speed 111 * SystemCoreClock is initialized with a correct predefined value. 112 */ 113 extern uint32_t SystemCoreClock; 114 115 /** 116 * @brief Setup the microcontroller system. 117 * 118 * Typically this function configures the oscillator (PLL) that is part of the 119 * microcontroller device. For systems with variable clock speed it also updates 120 * the variable SystemCoreClock. SystemInit is called from startup_device file. 121 */ 122 void SystemInit (void); 123 124 /** 125 * @brief Updates the SystemCoreClock variable. 126 * 127 * It must be called whenever the core clock is changed during program 128 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 129 * the current core clock. 130 */ 131 void SystemCoreClockUpdate (void); 132 133 /** 134 * @brief SystemInit function hook. 135 * 136 * This weak function allows to call specific initialization code during the 137 * SystemInit() execution.This can be used when an application specific code needs 138 * to be called as close to the reset entry as possible (for example the Multicore 139 * Manager MCMGR_EarlyInit() function call). 140 * NOTE: No global r/w variables can be used in this hook function because the 141 * initialization of these variables happens after this function. 142 */ 143 void SystemInitHook (void); 144 145 #ifdef __cplusplus 146 } 147 #endif 148 149 #endif /* _SYSTEM_MK22F25612_H_ */ 150
