1 /* 2 ** ################################################################### 3 ** Processors: MK66FN2M0VLQ18 4 ** MK66FN2M0VMD18 5 ** MK66FX1M0VLQ18 6 ** MK66FX1M0VMD18 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: K66P144M180SF5RMV2, Rev. 1, Mar 2015 15 ** Version: rev. 3.0, 2015-03-25 16 ** Build: b181105 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 2016-2018 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 (2013-09-02) 34 ** Initial version. 35 ** - rev. 2.0 (2014-02-17) 36 ** Register accessor macros added to the memory map. 37 ** Symbols for Processor Expert memory map compatibility added to the memory map. 38 ** Startup file for gcc has been updated according to CMSIS 3.2. 39 ** Definition of BITBAND macros updated to support peripherals with 32-bit acces disabled. 40 ** Update according to reference manual rev. 2 41 ** - rev. 2.1 (2014-04-16) 42 ** Update of SystemInit() and SystemCoreClockUpdate() functions. 43 ** - rev. 2.2 (2014-10-14) 44 ** Interrupt INT_LPTimer renamed to INT_LPTMR0, interrupt INT_Watchdog renamed to INT_WDOG_EWM. 45 ** - rev. 2.3 (2014-11-20) 46 ** Update according to reverence manual K65P169M180SF5RMV2_NDA, Rev. 0 Draft A, October 2014. 47 ** Update of SystemInit() to use 16MHz external crystal. 48 ** - rev. 2.4 (2015-02-19) 49 ** Renamed interrupt vector LLW to LLWU. 50 ** - rev. 3.0 (2015-03-25) 51 ** Registers updated according to the reference manual revision 1, March 2015 52 ** 53 ** ################################################################### 54 */ 55 56 /*! 57 * @file MK66F18 58 * @version 3.0 59 * @date 2015-03-25 60 * @brief Device specific configuration file for MK66F18 (header file) 61 * 62 * Provides a system configuration function and a global variable that contains 63 * the system frequency. It configures the device and initializes the oscillator 64 * (PLL) that is part of the microcontroller device. 65 */ 66 67 #ifndef _SYSTEM_MK66F18_H_ 68 #define _SYSTEM_MK66F18_H_ /**< Symbol preventing repeated inclusion */ 69 70 #ifdef __cplusplus 71 extern "C" { 72 #endif 73 74 #include <stdint.h> 75 76 77 #ifndef DISABLE_WDOG 78 #define DISABLE_WDOG 1 79 #endif 80 81 /* Define clock source values */ 82 83 #define CPU_XTAL_CLK_HZ 16000000U /* Value of the external crystal or oscillator clock frequency of the system oscillator (OSC) in Hz */ 84 #define CPU_XTAL32k_CLK_HZ 32768U /* Value of the external 32k crystal or oscillator clock frequency of the RTC in Hz */ 85 #define CPU_INT_SLOW_CLK_HZ 32768U /* Value of the slow internal oscillator clock frequency in Hz */ 86 #define CPU_INT_FAST_CLK_HZ 4000000U /* Value of the fast internal oscillator clock frequency in Hz */ 87 #define CPU_INT_IRC_CLK_HZ 48000000U /* Value of the 48M internal oscillator clock frequency in Hz */ 88 89 /* RTC oscillator setting */ 90 /* RTC_CR: SC2P=0,SC4P=0,SC8P=0,SC16P=0,CLKO=1,OSCE=1,WPS=0,UM=0,SUP=0,WPE=0,SWR=0 */ 91 #define SYSTEM_RTC_CR_VALUE 0x0300U /* RTC_CR */ 92 93 /* Low power mode enable */ 94 /* SMC_PMPROT: AHSRUN=1,AVLP=1,ALLS=1,AVLLS=1 */ 95 #define SYSTEM_SMC_PMPROT_VALUE 0xAAU /* SMC_PMPROT */ 96 97 #define DEFAULT_SYSTEM_CLOCK 20971520u 98 99 100 /** 101 * @brief System clock frequency (core clock) 102 * 103 * The system clock frequency supplied to the SysTick timer and the processor 104 * core clock. This variable can be used by the user application to setup the 105 * SysTick timer or configure other parameters. It may also be used by debugger to 106 * query the frequency of the debug timer or configure the trace clock speed 107 * SystemCoreClock is initialized with a correct predefined value. 108 */ 109 extern uint32_t SystemCoreClock; 110 111 /** 112 * @brief Setup the microcontroller system. 113 * 114 * Typically this function configures the oscillator (PLL) that is part of the 115 * microcontroller device. For systems with variable clock speed it also updates 116 * the variable SystemCoreClock. SystemInit is called from startup_device file. 117 */ 118 void SystemInit (void); 119 120 /** 121 * @brief Updates the SystemCoreClock variable. 122 * 123 * It must be called whenever the core clock is changed during program 124 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 125 * the current core clock. 126 */ 127 void SystemCoreClockUpdate (void); 128 129 /** 130 * @brief SystemInit function hook. 131 * 132 * This weak function allows to call specific initialization code during the 133 * SystemInit() execution.This can be used when an application specific code needs 134 * to be called as close to the reset entry as possible (for example the Multicore 135 * Manager MCMGR_EarlyInit() function call). 136 * NOTE: No global r/w variables can be used in this hook function because the 137 * initialization of these variables happens after this function. 138 */ 139 void SystemInitHook (void); 140 141 #ifdef __cplusplus 142 } 143 #endif 144 145 #endif /* _SYSTEM_MK66F18_H_ */ 146
