1 /* 2 ** ################################################################### 3 ** Processors: MKM34Z256VLL7 4 ** MKM34Z256VLQ7 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: KM34P144M75SF0RM, Rev.1, Jan 2015 13 ** Version: rev. 1.2, 2015-03-06 14 ** Build: b201125 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 (2014-10-17) 32 ** Initial version. 33 ** - rev. 1.1 (2015-01-27) 34 ** Update according to reference manual rev. 1, RC. 35 ** - rev. 1.2 (2015-03-06) 36 ** Update according to reference manual rev. 1. 37 ** 38 ** ################################################################### 39 */ 40 41 /*! 42 * @file MKM34Z7 43 * @version 1.2 44 * @date 2015-03-06 45 * @brief Device specific configuration file for MKM34Z7 (header file) 46 * 47 * Provides a system configuration function and a global variable that contains 48 * the system frequency. It configures the device and initializes the oscillator 49 * (PLL) that is part of the microcontroller device. 50 */ 51 52 #ifndef _SYSTEM_MKM34Z7_H_ 53 #define _SYSTEM_MKM34Z7_H_ /**< Symbol preventing repeated inclusion */ 54 55 #ifdef __cplusplus 56 extern "C" { 57 #endif 58 59 #include <stdint.h> 60 61 #ifndef DISABLE_WDOG 62 #define DISABLE_WDOG 1 63 #endif 64 65 /* Define clock source values */ 66 67 #define CPU_XTAL_CLK_HZ 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */ 68 #define CPU_XTAL32k_CLK_HZ 32768u /* Value of the external 32k crystal or oscillator clock frequency in Hz */ 69 #define CPU_INT_SLOW_CLK_HZ 32768u /* Value of the slow internal oscillator clock frequency in Hz */ 70 #define CPU_INT_FAST_CLK_HZ 4000000u /* Value of the fast internal oscillator clock frequency in Hz */ 71 72 /* Low power mode enable */ 73 /* SMC_PMPROT: AVLP=1,AVLLS=1 */ 74 #define SYSTEM_SMC_PMPROT_VALUE 0x22U /* SMC_PMPROT */ 75 76 #define DEFAULT_SYSTEM_CLOCK 2000000u /* Default System clock value */ 77 78 /** 79 * @brief System clock frequency (core clock) 80 * 81 * The system clock frequency supplied to the SysTick timer and the processor 82 * core clock. This variable can be used by the user application to setup the 83 * SysTick timer or configure other parameters. It may also be used by debugger to 84 * query the frequency of the debug timer or configure the trace clock speed 85 * SystemCoreClock is initialized with a correct predefined value. 86 */ 87 extern uint32_t SystemCoreClock; 88 89 /** 90 * @brief Setup the microcontroller system. 91 * 92 * Typically this function configures the oscillator (PLL) that is part of the 93 * microcontroller device. For systems with variable clock speed it also updates 94 * the variable SystemCoreClock. SystemInit is called from startup_device file. 95 */ 96 void SystemInit(void); 97 98 /** 99 * @brief Updates the SystemCoreClock variable. 100 * 101 * It must be called whenever the core clock is changed during program 102 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 103 * the current core clock. 104 */ 105 void SystemCoreClockUpdate(void); 106 107 /** 108 * @brief SystemInit function hook. 109 * 110 * This weak function allows to call specific initialization code during the 111 * SystemInit() execution.This can be used when an application specific code needs 112 * to be called as close to the reset entry as possible (for example the Multicore 113 * Manager MCMGR_EarlyInit() function call). 114 * NOTE: No global r/w variables can be used in this hook function because the 115 * initialization of these variables happens after this function. 116 */ 117 void SystemInitHook(void); 118 119 #ifdef __cplusplus 120 } 121 #endif 122 123 #endif /* _SYSTEM_MKM34Z7_H_ */ 124
