1 /* 2 ** ################################################################### 3 ** Processors: MKV31F256VLH12 4 ** MKV31F256VLL12 5 ** 6 ** Compilers: Freescale C/C++ for Embedded ARM 7 ** GNU C Compiler 8 ** IAR ANSI C/C++ Compiler for ARM 9 ** Keil ARM C/C++ Compiler 10 ** MCUXpresso Compiler 11 ** 12 ** Reference manual: KV31P100M120SF8RM, Rev. 1, March 24, 2014 13 ** Version: rev. 1.7, 2015-02-19 14 ** Build: b181105 15 ** 16 ** Abstract: 17 ** Provides a system configuration function and a global variable that 18 ** contains the system frequency. It configures the device and initializes 19 ** the oscillator (PLL) that is part of the microcontroller device. 20 ** 21 ** Copyright 2016 Freescale Semiconductor, Inc. 22 ** Copyright 2016-2018 NXP 23 ** All rights reserved. 24 ** 25 ** SPDX-License-Identifier: BSD-3-Clause 26 ** 27 ** http: www.nxp.com 28 ** mail: support@nxp.com 29 ** 30 ** Revisions: 31 ** - rev. 1.0 (2013-11-01) 32 ** Initial version. 33 ** - rev. 1.1 (2013-12-20) 34 ** Update according to reference manual rev. 0.6, 35 ** - rev. 1.2 (2014-02-06) 36 ** Update according to reference manual rev. 0.61, 37 ** - rev. 1.3 (2014-02-10) 38 ** The declaration of clock configurations has been moved to separate header file system_MKV31F25612.h 39 ** - rev. 1.4 (2014-04-30) 40 ** Update of MCM module according to the RM rev. 1. 41 ** Update of system and startup files. 42 ** Module access macro module_BASES replaced by module_BASE_PTRS. 43 ** - rev. 1.5 (2014-08-28) 44 ** Update of system files - default clock configuration changed. 45 ** Update of startup files - possibility to override DefaultISR added. 46 ** - rev. 1.6 (2014-10-14) 47 ** Interrupt INT_LPTimer renamed to INT_LPTMR0, interrupt INT_Watchdog renamed to INT_WDOG_EWM. 48 ** - rev. 1.7 (2015-02-19) 49 ** Renamed interrupt vector LLW to LLWU. 50 ** 51 ** ################################################################### 52 */ 53 54 /*! 55 * @file MKV31F25612 56 * @version 1.7 57 * @date 2015-02-19 58 * @brief Device specific configuration file for MKV31F25612 (header file) 59 * 60 * Provides a system configuration function and a global variable that contains 61 * the system frequency. It configures the device and initializes the oscillator 62 * (PLL) that is part of the microcontroller device. 63 */ 64 65 #ifndef _SYSTEM_MKV31F25612_H_ 66 #define _SYSTEM_MKV31F25612_H_ /**< Symbol preventing repeated inclusion */ 67 68 #ifdef __cplusplus 69 extern "C" { 70 #endif 71 72 #include <stdint.h> 73 74 75 #ifndef DISABLE_WDOG 76 #define DISABLE_WDOG 1 77 #endif 78 79 /* Define clock source values */ 80 81 #define CPU_XTAL_CLK_HZ 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */ 82 #define CPU_XTAL32k_CLK_HZ 0u /* No RTC clock available */ 83 #define CPU_INT_SLOW_CLK_HZ 32768u /* Value of the slow internal oscillator clock frequency in Hz */ 84 #define CPU_INT_FAST_CLK_HZ 4000000u /* Value of the fast internal oscillator clock frequency in Hz */ 85 #define CPU_INT_IRC_CLK_HZ 48000000u /* Value of the 48M internal oscillator clock frequency in Hz */ 86 87 /* RTC oscillator setting */ 88 89 /* Low power mode enable */ 90 /* SMC_PMPROT: AHSRUN=1,AVLP=1,ALLS=1,AVLLS=1 */ 91 #define SYSTEM_SMC_PMPROT_VALUE 0xAAU /* SMC_PMPROT */ 92 93 #define DEFAULT_SYSTEM_CLOCK 20971520u /* Default System clock value */ 94 95 96 /** 97 * @brief System clock frequency (core clock) 98 * 99 * The system clock frequency supplied to the SysTick timer and the processor 100 * core clock. This variable can be used by the user application to setup the 101 * SysTick timer or configure other parameters. It may also be used by debugger to 102 * query the frequency of the debug timer or configure the trace clock speed 103 * SystemCoreClock is initialized with a correct predefined value. 104 */ 105 extern uint32_t SystemCoreClock; 106 107 /** 108 * @brief Setup the microcontroller system. 109 * 110 * Typically this function configures the oscillator (PLL) that is part of the 111 * microcontroller device. For systems with variable clock speed it also updates 112 * the variable SystemCoreClock. SystemInit is called from startup_device file. 113 */ 114 void SystemInit (void); 115 116 /** 117 * @brief Updates the SystemCoreClock variable. 118 * 119 * It must be called whenever the core clock is changed during program 120 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 121 * the current core clock. 122 */ 123 void SystemCoreClockUpdate (void); 124 125 /** 126 * @brief SystemInit function hook. 127 * 128 * This weak function allows to call specific initialization code during the 129 * SystemInit() execution.This can be used when an application specific code needs 130 * to be called as close to the reset entry as possible (for example the Multicore 131 * Manager MCMGR_EarlyInit() function call). 132 * NOTE: No global r/w variables can be used in this hook function because the 133 * initialization of these variables happens after this function. 134 */ 135 void SystemInitHook (void); 136 137 #ifdef __cplusplus 138 } 139 #endif 140 141 #endif /* _SYSTEM_MKV31F25612_H_ */ 142
