1 /* 2 ** ################################################################### 3 ** Processors: MCXN236VDF 4 ** MCXN236VNL 5 ** 6 ** Compilers: GNU C Compiler 7 ** IAR ANSI C/C++ Compiler for ARM 8 ** Keil ARM C/C++ Compiler 9 ** MCUXpresso Compiler 10 ** 11 ** Reference manual: MCXN23XRM 12 ** Version: rev. 1.0, 2023-10-01 13 ** Build: b240307 14 ** 15 ** Abstract: 16 ** Provides a system configuration function and a global variable that 17 ** contains the system frequency. It configures the device and initializes 18 ** the oscillator (PLL) that is part of the microcontroller device. 19 ** 20 ** Copyright 2016 Freescale Semiconductor, Inc. 21 ** Copyright 2016-2024 NXP 22 ** SPDX-License-Identifier: BSD-3-Clause 23 ** 24 ** http: www.nxp.com 25 ** mail: support@nxp.com 26 ** 27 ** Revisions: 28 ** - rev. 1.0 (2023-10-01) 29 ** Initial version based on RM 1.2 30 ** 31 ** ################################################################### 32 */ 33 34 /*! 35 * @file MCXN236 36 * @version 1.0 37 * @date 2023-10-01 38 * @brief Device specific configuration file for MCXN236 (header file) 39 * 40 * Provides a system configuration function and a global variable that contains 41 * the system frequency. It configures the device and initializes the oscillator 42 * (PLL) that is part of the microcontroller device. 43 */ 44 45 #ifndef _SYSTEM_MCXN236_H_ 46 #define _SYSTEM_MCXN236_H_ /**< Symbol preventing repeated inclusion */ 47 48 #ifdef __cplusplus 49 extern "C" { 50 #endif 51 52 #include <stdint.h> 53 54 55 #define DEFAULT_SYSTEM_CLOCK 48000000u /* Default System clock value */ 56 #define CLK_FRO_12MHZ 12000000u /* FRO 12 MHz (fro_12m) */ 57 #define CLK_FRO_144MHZ 144000000u /* FRO 144 MHz (fro_144m) */ 58 59 60 61 /** 62 * @brief System clock frequency (core clock) 63 * 64 * The system clock frequency supplied to the SysTick timer and the processor 65 * core clock. This variable can be used by the user application to setup the 66 * SysTick timer or configure other parameters. It may also be used by debugger to 67 * query the frequency of the debug timer or configure the trace clock speed 68 * SystemCoreClock is initialized with a correct predefined value. 69 */ 70 extern uint32_t SystemCoreClock; 71 72 /** 73 * @brief Setup the microcontroller system. 74 * 75 * Typically this function configures the oscillator (PLL) that is part of the 76 * microcontroller device. For systems with variable clock speed it also updates 77 * the variable SystemCoreClock. SystemInit is called from startup_device file. 78 */ 79 void SystemInit (void); 80 81 /** 82 * @brief Updates the SystemCoreClock variable. 83 * 84 * It must be called whenever the core clock is changed during program 85 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 86 * the current core clock. 87 */ 88 void SystemCoreClockUpdate (void); 89 90 /** 91 * @brief SystemInit function hook. 92 * 93 * This weak function allows to call specific initialization code during the 94 * SystemInit() execution.This can be used when an application specific code needs 95 * to be called as close to the reset entry as possible (for example the Multicore 96 * Manager MCMGR_EarlyInit() function call). 97 * NOTE: No global r/w variables can be used in this hook function because the 98 * initialization of these variables happens after this function. 99 */ 100 void SystemInitHook (void); 101 102 #ifdef __cplusplus 103 } 104 #endif 105 106 #endif /* _SYSTEM_MCXN236_H_ */ 107
