1 /* 2 ** ################################################################### 3 ** Processors: MIMXRT633SFAWBR 4 ** MIMXRT633SFFOB 5 ** MIMXRT633SFVKB 6 ** 7 ** Compilers: GNU C Compiler 8 ** IAR ANSI C/C++ Compiler for ARM 9 ** Keil ARM C/C++ Compiler 10 ** MCUXpresso Compiler 11 ** 12 ** Reference manual: MIMXRT685 User manual Rev. 0.95 11 November 2019 13 ** Version: rev. 2.0, 2019-11-12 14 ** Build: b201016 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 (2018-06-19) 32 ** Initial version. 33 ** - rev. 2.0 (2019-11-12) 34 ** Base on rev 0.95 RM (B0 Header) 35 ** 36 ** ################################################################### 37 */ 38 39 /*! 40 * @file MIMXRT633S 41 * @version 2.0 42 * @date 2019-11-12 43 * @brief Device specific configuration file for MIMXRT633S (header file) 44 * 45 * Provides a system configuration function and a global variable that contains 46 * the system frequency. It configures the device and initializes the oscillator 47 * (PLL) that is part of the microcontroller device. 48 */ 49 50 #ifndef _SYSTEM_MIMXRT633S_H_ 51 #define _SYSTEM_MIMXRT633S_H_ /**< Symbol preventing repeated inclusion */ 52 53 #ifdef __cplusplus 54 extern "C" { 55 #endif 56 57 #include <stdint.h> 58 59 60 #define DEFAULT_SYSTEM_CLOCK 12000000u /* Default System clock value */ 61 #ifndef CLK_XTAL_OSC_CLK 62 #define CLK_XTAL_OSC_CLK 24000000u /* Default XTAL OSC clock */ 63 #endif 64 #define CLK_RTC_32K_CLK 32768u /* RTC oscillator 32 kHz (32k_clk) */ 65 #define CLK_LPOSC_1MHZ 1000000u /* Low power oscillator 1 MHz (1m_lposc) */ 66 #define CLK_FRO_16MHZ 16000000u /* Slow FRO 16 MHz (fro_16m) */ 67 #define CLK_FRO_48MHZ 48000000u /* Fast FRO 48 MHz (fro_48m) */ 68 #define CLK_FRO_60MHZ 60000000u /* Fast FRO 60 MHz (fro_60m) */ 69 #ifndef CLK_EXT_CLKIN 70 #define CLK_EXT_CLKIN 0u /* Default external CLKIN pin clock */ 71 #endif 72 73 74 /** 75 * @brief System clock frequency (core clock) 76 * 77 * The system clock frequency supplied to the SysTick timer and the processor 78 * core clock. This variable can be used by the user application to setup the 79 * SysTick timer or configure other parameters. It may also be used by debugger to 80 * query the frequency of the debug timer or configure the trace clock speed 81 * SystemCoreClock is initialized with a correct predefined value. 82 */ 83 extern uint32_t SystemCoreClock; 84 85 /** 86 * @brief Setup the microcontroller system. 87 * 88 * Typically this function configures the oscillator (PLL) that is part of the 89 * microcontroller device. For systems with variable clock speed it also updates 90 * the variable SystemCoreClock. SystemInit is called from startup_device file. 91 */ 92 void SystemInit (void); 93 94 /** 95 * @brief Updates the SystemCoreClock variable. 96 * 97 * It must be called whenever the core clock is changed during program 98 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 99 * the current core clock. 100 */ 101 void SystemCoreClockUpdate (void); 102 103 /** 104 * @brief SystemInit function hook. 105 * 106 * This weak function allows to call specific initialization code during the 107 * SystemInit() execution.This can be used when an application specific code needs 108 * to be called as close to the reset entry as possible (for example the Multicore 109 * Manager MCMGR_EarlyInit() function call). 110 * NOTE: No global r/w variables can be used in this hook function because the 111 * initialization of these variables happens after this function. 112 */ 113 void SystemInitHook (void); 114 115 #ifdef __cplusplus 116 } 117 #endif 118 119 #endif /* _SYSTEM_MIMXRT633S_H_ */ 120
