1 /* 2 ** ################################################################### 3 ** Processors: MIMXRT1024CAG4A 4 ** MIMXRT1024DAG5A 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: IMXRT1024RM Rev.0, 09/2020 | IMXRT102xSRM Rev.0 13 ** Version: rev. 0.1, 2020-01-15 14 ** Build: b201022 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. 0.1 (2020-01-15) 32 ** Initial version. 33 ** 34 ** ################################################################### 35 */ 36 37 /*! 38 * @file MIMXRT1024 39 * @version 0.1 40 * @date 2020-01-15 41 * @brief Device specific configuration file for MIMXRT1024 (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_MIMXRT1024_H_ 49 #define _SYSTEM_MIMXRT1024_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 24000000UL /* Value of the external crystal or oscillator clock frequency in Hz */ 65 66 #define DEFAULT_SYSTEM_CLOCK 297000000UL /* Default System clock value */ 67 68 69 /** 70 * @brief System clock frequency (core clock) 71 * 72 * The system clock frequency supplied to the SysTick timer and the processor 73 * core clock. This variable can be used by the user application to setup the 74 * SysTick timer or configure other parameters. It may also be used by debugger to 75 * query the frequency of the debug timer or configure the trace clock speed 76 * SystemCoreClock is initialized with a correct predefined value. 77 */ 78 extern uint32_t SystemCoreClock; 79 80 /** 81 * @brief Setup the microcontroller system. 82 * 83 * Typically this function configures the oscillator (PLL) that is part of the 84 * microcontroller device. For systems with variable clock speed it also updates 85 * the variable SystemCoreClock. SystemInit is called from startup_device file. 86 */ 87 void SystemInit (void); 88 89 /** 90 * @brief Updates the SystemCoreClock variable. 91 * 92 * It must be called whenever the core clock is changed during program 93 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 94 * the current core clock. 95 */ 96 void SystemCoreClockUpdate (void); 97 98 /** 99 * @brief SystemInit function hook. 100 * 101 * This weak function allows to call specific initialization code during the 102 * SystemInit() execution.This can be used when an application specific code needs 103 * to be called as close to the reset entry as possible (for example the Multicore 104 * Manager MCMGR_EarlyInit() function call). 105 * NOTE: No global r/w variables can be used in this hook function because the 106 * initialization of these variables happens after this function. 107 */ 108 void SystemInitHook (void); 109 110 #ifdef __cplusplus 111 } 112 #endif 113 114 #endif /* _SYSTEM_MIMXRT1024_H_ */ 115
