1 /* 2 ** ################################################################### 3 ** Processors: K32L2B31VFM0A 4 ** K32L2B31VFT0A 5 ** K32L2B31VLH0A 6 ** K32L2B31VMP0A 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: K32L2B3xRM, Rev.0, July 2019 15 ** Version: rev. 1.0, 2019-07-30 16 ** Build: b190925 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 2016-2019 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 (2019-07-30) 34 ** Initial version. 35 ** 36 ** ################################################################### 37 */ 38 39 /*! 40 * @file K32L2B31A 41 * @version 1.0 42 * @date 2019-07-30 43 * @brief Device specific configuration file for K32L2B31A (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_K32L2B31A_H_ 51 #define _SYSTEM_K32L2B31A_H_ /**< Symbol preventing repeated inclusion */ 52 53 #ifdef __cplusplus 54 extern "C" { 55 #endif 56 57 #include <stdint.h> 58 59 #ifndef DISABLE_WDOG 60 #define DISABLE_WDOG 1 61 #endif 62 63 #define ACK_ISOLATION 1 64 65 /* Define clock source values */ 66 67 #define CPU_XTAL_CLK_HZ 32768u /* Value of the external crystal or oscillator clock frequency in Hz */ 68 #define CPU_INT_FAST_CLK_HZ 48000000u /* Value of the fast internal oscillator clock frequency in Hz */ 69 #define CPU_INT_IRC_CLK_HZ 48000000u /* Value of the 48M internal oscillator clock frequency in Hz */ 70 71 /* Low power mode enable */ 72 /* SMC_PMPROT: AVLP=1,AVLLS=1 */ 73 #define SYSTEM_SMC_PMPROT_VALUE 0x2Au /* SMC_PMPROT */ 74 75 #define DEFAULT_SYSTEM_CLOCK 8000000u /* Default System clock value */ 76 #define CPU_INT_SLOW_CLK_HZ 8000000u /* Value of the slow internal oscillator clock frequency in Hz */ 77 78 /** 79 * @brief System clock frequency (core clock) 80 * 81 * The system clock frequency supplied to the SysTick timer and the processor 82 * core clock. This variable can be used by the user application to setup the 83 * SysTick timer or configure other parameters. It may also be used by debugger to 84 * query the frequency of the debug timer or configure the trace clock speed 85 * SystemCoreClock is initialized with a correct predefined value. 86 */ 87 extern uint32_t SystemCoreClock; 88 89 /** 90 * @brief Setup the microcontroller system. 91 * 92 * Typically this function configures the oscillator (PLL) that is part of the 93 * microcontroller device. For systems with variable clock speed it also updates 94 * the variable SystemCoreClock. SystemInit is called from startup_device file. 95 */ 96 void SystemInit(void); 97 98 /** 99 * @brief Updates the SystemCoreClock variable. 100 * 101 * It must be called whenever the core clock is changed during program 102 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 103 * the current core clock. 104 */ 105 void SystemCoreClockUpdate(void); 106 107 /** 108 * @brief SystemInit function hook. 109 * 110 * This weak function allows to call specific initialization code during the 111 * SystemInit() execution.This can be used when an application specific code needs 112 * to be called as close to the reset entry as possible (for example the Multicore 113 * Manager MCMGR_EarlyInit() function call). 114 * NOTE: No global r/w variables can be used in this hook function because the 115 * initialization of these variables happens after this function. 116 */ 117 void SystemInitHook(void); 118 119 #ifdef __cplusplus 120 } 121 #endif 122 123 #endif /* _SYSTEM_K32L2B31A_H_ */ 124
