1 /* 2 ** ################################################################### 3 ** Processors: MKL25Z128VFM4 4 ** MKL25Z128VFT4 5 ** MKL25Z128VLH4 6 ** MKL25Z128VLK4 7 ** MKL25Z32VFM4 8 ** MKL25Z32VFT4 9 ** MKL25Z32VLH4 10 ** MKL25Z32VLK4 11 ** MKL25Z64VFM4 12 ** MKL25Z64VFT4 13 ** MKL25Z64VLH4 14 ** MKL25Z64VLK4 15 ** 16 ** Compilers: Keil ARM C/C++ Compiler 17 ** Freescale C/C++ for Embedded ARM 18 ** GNU C Compiler 19 ** IAR ANSI C/C++ Compiler for ARM 20 ** MCUXpresso Compiler 21 ** 22 ** Reference manual: KL25P80M48SF0RM, Rev.3, Sep 2012 23 ** Version: rev. 2.5, 2015-02-19 24 ** Build: b170112 25 ** 26 ** Abstract: 27 ** Provides a system configuration function and a global variable that 28 ** contains the system frequency. It configures the device and initializes 29 ** the oscillator (PLL) that is part of the microcontroller device. 30 ** 31 ** Copyright (c) 2016 Freescale Semiconductor, Inc. 32 ** Copyright 2016 - 2017 NXP 33 ** Redistribution and use in source and binary forms, with or without modification, 34 ** are permitted provided that the following conditions are met: 35 ** 36 ** o Redistributions of source code must retain the above copyright notice, this list 37 ** of conditions and the following disclaimer. 38 ** 39 ** o Redistributions in binary form must reproduce the above copyright notice, this 40 ** list of conditions and the following disclaimer in the documentation and/or 41 ** other materials provided with the distribution. 42 ** 43 ** o Neither the name of the copyright holder nor the names of its 44 ** contributors may be used to endorse or promote products derived from this 45 ** software without specific prior written permission. 46 ** 47 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 48 ** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 49 ** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 50 ** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 51 ** ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 52 ** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 53 ** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 54 ** ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 55 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 56 ** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 57 ** 58 ** http: www.nxp.com 59 ** mail: support@nxp.com 60 ** 61 ** Revisions: 62 ** - rev. 1.0 (2012-06-13) 63 ** Initial version. 64 ** - rev. 1.1 (2012-06-21) 65 ** Update according to reference manual rev. 1. 66 ** - rev. 1.2 (2012-08-01) 67 ** Device type UARTLP changed to UART0. 68 ** - rev. 1.3 (2012-10-04) 69 ** Update according to reference manual rev. 3. 70 ** - rev. 1.4 (2012-11-22) 71 ** MCG module - bit LOLS in MCG_S register renamed to LOLS0. 72 ** NV registers - bit EZPORT_DIS in NV_FOPT register removed. 73 ** - rev. 1.5 (2013-04-05) 74 ** Changed start of doxygen comment. 75 ** - rev. 2.0 (2013-10-29) 76 ** Register accessor macros added to the memory map. 77 ** Symbols for Processor Expert memory map compatibility added to the memory map. 78 ** Startup file for gcc has been updated according to CMSIS 3.2. 79 ** System initialization updated. 80 ** - rev. 2.1 (2014-07-16) 81 ** Module access macro module_BASES replaced by module_BASE_PTRS. 82 ** System initialization and startup updated. 83 ** - rev. 2.2 (2014-08-22) 84 ** System initialization updated - default clock config changed. 85 ** - rev. 2.3 (2014-08-28) 86 ** Update of startup files - possibility to override DefaultISR added. 87 ** - rev. 2.4 (2014-10-14) 88 ** Interrupt INT_LPTimer renamed to INT_LPTMR0. 89 ** - rev. 2.5 (2015-02-19) 90 ** Renamed interrupt vector LLW to LLWU. 91 ** 92 ** ################################################################### 93 */ 94 95 /*! 96 * @file MKL25Z4 97 * @version 2.5 98 * @date 2015-02-19 99 * @brief Device specific configuration file for MKL25Z4 (header file) 100 * 101 * Provides a system configuration function and a global variable that contains 102 * the system frequency. It configures the device and initializes the oscillator 103 * (PLL) that is part of the microcontroller device. 104 */ 105 106 #ifndef _SYSTEM_MKL25Z4_H_ 107 #define _SYSTEM_MKL25Z4_H_ /**< Symbol preventing repeated inclusion */ 108 109 #ifdef __cplusplus 110 extern "C" { 111 #endif 112 113 #include <stdint.h> 114 115 116 #ifndef DISABLE_WDOG 117 #define DISABLE_WDOG 1 118 #endif 119 120 121 122 /* Define clock source values */ 123 124 #define CPU_XTAL_CLK_HZ 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */ 125 #define CPU_INT_SLOW_CLK_HZ 32768u /* Value of the slow internal oscillator clock frequency in Hz */ 126 #define CPU_INT_FAST_CLK_HZ 4000000u /* Value of the fast internal oscillator clock frequency in Hz */ 127 128 /* RTC oscillator setting */ 129 130 /* Low power mode enable */ 131 /* SMC_PMPROT: AVLP=1,ALLS=1,AVLLS=1 */ 132 #define SYSTEM_SMC_PMPROT_VALUE 0x2AU /* SMC_PMPROT */ 133 134 #define DEFAULT_SYSTEM_CLOCK 20971520u /* Default System clock value */ 135 136 137 /** 138 * @brief System clock frequency (core clock) 139 * 140 * The system clock frequency supplied to the SysTick timer and the processor 141 * core clock. This variable can be used by the user application to setup the 142 * SysTick timer or configure other parameters. It may also be used by debugger to 143 * query the frequency of the debug timer or configure the trace clock speed 144 * SystemCoreClock is initialized with a correct predefined value. 145 */ 146 extern uint32_t SystemCoreClock; 147 148 /** 149 * @brief Setup the microcontroller system. 150 * 151 * Typically this function configures the oscillator (PLL) that is part of the 152 * microcontroller device. For systems with variable clock speed it also updates 153 * the variable SystemCoreClock. SystemInit is called from startup_device file. 154 */ 155 void SystemInit (void); 156 157 /** 158 * @brief Updates the SystemCoreClock variable. 159 * 160 * It must be called whenever the core clock is changed during program 161 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates 162 * the current core clock. 163 */ 164 void SystemCoreClockUpdate (void); 165 166 #ifdef __cplusplus 167 } 168 #endif 169 170 #endif /* _SYSTEM_MKL25Z4_H_ */ 171
