1 /* 2 ** ################################################################### 3 ** Processors: MKM14Z128ACHH5 4 ** MKM14Z64ACHH5 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: MKMxxZxxACxx5RM, Rev. 2, 10/2017 13 ** Version: rev. 1.0, 2014-07-22 14 ** Build: b201216 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 2016-2020 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 (2014-07-22) 32 ** Initial version. 33 ** 34 ** ################################################################### 35 */ 36 37 /*! 38 * @file MKM14ZA5 39 * @version 1.0 40 * @date 2014-07-22 41 * @brief Device specific configuration file for MKM14ZA5 (header file) 42 * 43 * Provides a system configuration function and a global variable that contains 44 * the system frequency. It configures the device and initializes the oscillator 45 * (PLL) that is part of the microcontroller device. 46 */ 47 48 #ifndef _SYSTEM_MKM14ZA5_H_ 49 #define _SYSTEM_MKM14ZA5_H_ /**< Symbol preventing repeated inclusion */ 50 51 #ifdef __cplusplus 52 extern "C" { 53 #endif 54 55 #include <stdint.h> 56 57 58 #ifndef DISABLE_WDOG 59 #define DISABLE_WDOG 1 60 #endif 61 62 /* Define clock source values */ 63 64 #define CPU_XTAL_CLK_HZ 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */ 65 #define CPU_XTAL32k_CLK_HZ 32768u /* Value of the external 32k crystal or oscillator clock frequency in Hz */ 66 #define CPU_INT_SLOW_CLK_HZ 32768u /* Value of the slow internal oscillator clock frequency in Hz */ 67 #define CPU_INT_FAST_CLK_HZ 4000000u /* Value of the fast internal oscillator clock frequency in Hz */ 68 69 /* Low power mode enable */ 70 /* SMC_PMPROT: AVLP=1,AVLLS=1 */ 71 #define SYSTEM_SMC_PMPROT_VALUE 0x22U /* SMC_PMPROT */ 72 73 #define DEFAULT_SYSTEM_CLOCK 2000000u /* Default System clock value */ 74 75 76 /** 77 * @brief System clock frequency (core clock) 78 * 79 * The system clock frequency supplied to the SysTick timer and the processor 80 * core clock. This variable can be used by the user application to setup the 81 * SysTick timer or configure other parameters. It may also be used by debugger to 82 * query the frequency of the debug timer or configure the trace clock speed 83 * SystemCoreClock is initialized with a correct predefined value. 84 */ 85 extern uint32_t SystemCoreClock; 86 87 /** 88 * @brief Setup the microcontroller system. 89 * 90 * Typically this function configures the oscillator (PLL) that is part of the 91 * microcontroller device. For systems with variable clock speed it also updates 92 * the variable SystemCoreClock. SystemInit is called from startup_device file. 93 */ 94 void SystemInit (void); 95 96 /** 97 * @brief Updates the SystemCoreClock variable. 98 * 99 * It must be called whenever the core clock is changed during program 100 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 101 * the current core clock. 102 */ 103 void SystemCoreClockUpdate (void); 104 105 /** 106 * @brief SystemInit function hook. 107 * 108 * This weak function allows to call specific initialization code during the 109 * SystemInit() execution.This can be used when an application specific code needs 110 * to be called as close to the reset entry as possible (for example the Multicore 111 * Manager MCMGR_EarlyInit() function call). 112 * NOTE: No global r/w variables can be used in this hook function because the 113 * initialization of these variables happens after this function. 114 */ 115 void SystemInitHook (void); 116 117 #ifdef __cplusplus 118 } 119 #endif 120 121 #endif /* _SYSTEM_MKM14ZA5_H_ */ 122
