1 /* 2 ** ################################################################### 3 ** Processors: MKE16Z32VLD4 4 ** MKE16Z32VLF4 5 ** MKE16Z64VLD4 6 ** MKE16Z64VLF4 7 ** 8 ** Compilers: Freescale C/C++ for Embedded ARM 9 ** GNU C Compiler 10 ** IAR ANSI C/C++ Compiler for ARM 11 ** Keil ARM C/C++ Compiler 12 ** MCUXpresso Compiler 13 ** 14 ** Reference manual: KE1xZP48M48SF0RM, Rev. 1, Sep. 2018 15 ** Version: rev. 3.0, 2020-01-22 16 ** Build: b200122 17 ** 18 ** Abstract: 19 ** Provides a system configuration function and a global variable that 20 ** contains the system frequency. It configures the device and initializes 21 ** the oscillator (PLL) that is part of the microcontroller device. 22 ** 23 ** Copyright 2016 Freescale Semiconductor, Inc. 24 ** Copyright 2016-2020 NXP 25 ** All rights reserved. 26 ** 27 ** SPDX-License-Identifier: BSD-3-Clause 28 ** 29 ** http: www.nxp.com 30 ** mail: support@nxp.com 31 ** 32 ** Revisions: 33 ** - rev. 1.0 (2018-05-09) 34 ** Initial version. 35 ** - rev. 2.0 (2018-09-17) 36 ** Based on rev1 RM. 37 ** - rev. 3.0 (2020-01-22) 38 ** Add 40 pins part numbers. 39 ** 40 ** ################################################################### 41 */ 42 43 /*! 44 * @file MKE16Z4 45 * @version 3.0 46 * @date 2020-01-22 47 * @brief Device specific configuration file for MKE16Z4 (header file) 48 * 49 * Provides a system configuration function and a global variable that contains 50 * the system frequency. It configures the device and initializes the oscillator 51 * (PLL) that is part of the microcontroller device. 52 */ 53 54 #ifndef _SYSTEM_MKE16Z4_H_ 55 #define _SYSTEM_MKE16Z4_H_ /**< Symbol preventing repeated inclusion */ 56 57 #ifdef __cplusplus 58 extern "C" { 59 #endif 60 61 #include <stdint.h> 62 63 64 #ifndef DISABLE_WDOG 65 #define DISABLE_WDOG 1 66 #endif 67 68 /* Define clock source values */ 69 70 #define CPU_XTAL_CLK_HZ 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */ 71 #define CPU_INT_FAST_CLK_HZ 48000000u /* Value of the fast internal oscillator clock frequency in Hz */ 72 #define CPU_INT_IRC_CLK_HZ 48000000u /* Value of the 48M internal oscillator clock frequency in Hz */ 73 74 /* Low power mode enable */ 75 /* SMC_PMPROT: AVLP=1 */ 76 #define SYSTEM_SMC_PMPROT_VALUE 0x20u /* SMC_PMPROT */ 77 #define SYSTEM_SMC_PMCTRL_VALUE 0x0u /* SMC_PMCTRL */ 78 79 #define DEFAULT_SYSTEM_CLOCK 48000000u /* Default System clock value */ 80 #define CPU_INT_SLOW_CLK_HZ 8000000u /* Value of the slow internal oscillator clock frequency in Hz */ 81 82 83 /** 84 * @brief System clock frequency (core clock) 85 * 86 * The system clock frequency supplied to the SysTick timer and the processor 87 * core clock. This variable can be used by the user application to setup the 88 * SysTick timer or configure other parameters. It may also be used by debugger to 89 * query the frequency of the debug timer or configure the trace clock speed 90 * SystemCoreClock is initialized with a correct predefined value. 91 */ 92 extern uint32_t SystemCoreClock; 93 94 /** 95 * @brief Setup the microcontroller system. 96 * 97 * Typically this function configures the oscillator (PLL) that is part of the 98 * microcontroller device. For systems with variable clock speed it also updates 99 * the variable SystemCoreClock. SystemInit is called from startup_device file. 100 */ 101 void SystemInit (void); 102 103 /** 104 * @brief Updates the SystemCoreClock variable. 105 * 106 * It must be called whenever the core clock is changed during program 107 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 108 * the current core clock. 109 */ 110 void SystemCoreClockUpdate (void); 111 112 /** 113 * @brief SystemInit function hook. 114 * 115 * This weak function allows to call specific initialization code during the 116 * SystemInit() execution.This can be used when an application specific code needs 117 * to be called as close to the reset entry as possible (for example the Multicore 118 * Manager MCMGR_EarlyInit() function call). 119 * NOTE: No global r/w variables can be used in this hook function because the 120 * initialization of these variables happens after this function. 121 */ 122 void SystemInitHook (void); 123 124 #ifdef __cplusplus 125 } 126 #endif 127 128 #endif /* _SYSTEM_MKE16Z4_H_ */ 129
