1 /* 2 ** ################################################################### 3 ** Processors: MCXC244VFM 4 ** MCXC244VFT 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: MCXC444RM, Rev.1, Mar 2024 13 ** Version: rev. 1.0, 2024-03-11 14 ** Build: b240401 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 2016-2024 NXP 23 ** SPDX-License-Identifier: BSD-3-Clause 24 ** 25 ** http: www.nxp.com 26 ** mail: support@nxp.com 27 ** 28 ** Revisions: 29 ** - rev. 1.0 (2024-03-11) 30 ** Initial version. 31 ** 32 ** ################################################################### 33 */ 34 35 /*! 36 * @file MCXC244 37 * @version 1.0 38 * @date 2024-03-11 39 * @brief Device specific configuration file for MCXC244 (header file) 40 * 41 * Provides a system configuration function and a global variable that contains 42 * the system frequency. It configures the device and initializes the oscillator 43 * (PLL) that is part of the microcontroller device. 44 */ 45 46 #ifndef _SYSTEM_MCXC244_H_ 47 #define _SYSTEM_MCXC244_H_ /**< Symbol preventing repeated inclusion */ 48 49 #ifdef __cplusplus 50 extern "C" { 51 #endif 52 53 #include <stdint.h> 54 55 56 #ifndef DISABLE_WDOG 57 #define DISABLE_WDOG 1 58 #endif 59 60 #define ACK_ISOLATION 1 61 62 /* Define clock source values */ 63 #define CPU_XTAL_CLK_HZ 32768U /* Value of the external crystal or oscillator clock frequency in Hz */ 64 #define CPU_INT_FAST_CLK_HZ 48000000U /* Value of the fast internal oscillator clock frequency in Hz */ 65 #define CPU_INT_IRC_CLK_HZ 48000000U /* Value of the 48M internal oscillator clock frequency in Hz */ 66 67 /* Low power mode enable */ 68 /* SMC_PMPROT: AVLP=1,AVLLS=1 */ 69 #define SYSTEM_SMC_PMPROT_VALUE 0x2AU /* SMC_PMPROT */ 70 71 #define DEFAULT_SYSTEM_CLOCK 8000000U /* Default System clock value */ 72 #define CPU_INT_SLOW_CLK_HZ 8000000U /* Value of the slow internal oscillator clock frequency in Hz */ 73 74 75 76 /** 77 * @brief System clock frequency (core clock) 78 * 79 * The system clock frequency supplied to the SysTick timer and the processor 80 * core clock. This variable can be used by the user application to setup the 81 * SysTick timer or configure other parameters. It may also be used by debugger to 82 * query the frequency of the debug timer or configure the trace clock speed 83 * SystemCoreClock is initialized with a correct predefined value. 84 */ 85 extern uint32_t SystemCoreClock; 86 87 /** 88 * @brief Setup the microcontroller system. 89 * 90 * Typically this function configures the oscillator (PLL) that is part of the 91 * microcontroller device. For systems with variable clock speed it also updates 92 * the variable SystemCoreClock. SystemInit is called from startup_device file. 93 */ 94 void SystemInit (void); 95 96 /** 97 * @brief Updates the SystemCoreClock variable. 98 * 99 * It must be called whenever the core clock is changed during program 100 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 101 * the current core clock. 102 */ 103 void SystemCoreClockUpdate (void); 104 105 /** 106 * @brief SystemInit function hook. 107 * 108 * This weak function allows to call specific initialization code during the 109 * SystemInit() execution.This can be used when an application specific code needs 110 * to be called as close to the reset entry as possible (for example the Multicore 111 * Manager MCMGR_EarlyInit() function call). 112 * NOTE: No global r/w variables can be used in this hook function because the 113 * initialization of these variables happens after this function. 114 */ 115 void SystemInitHook (void); 116 117 #ifdef __cplusplus 118 } 119 #endif 120 121 #endif /* _SYSTEM_MCXC244_H_ */ 122
