/* ** ################################################################### ** Processors: MKL25Z128VFM4 ** MKL25Z128VFT4 ** MKL25Z128VLH4 ** MKL25Z128VLK4 ** MKL25Z32VFM4 ** MKL25Z32VFT4 ** MKL25Z32VLH4 ** MKL25Z32VLK4 ** MKL25Z64VFM4 ** MKL25Z64VFT4 ** MKL25Z64VLH4 ** MKL25Z64VLK4 ** ** Compilers: Keil ARM C/C++ Compiler ** Freescale C/C++ for Embedded ARM ** GNU C Compiler ** IAR ANSI C/C++ Compiler for ARM ** MCUXpresso Compiler ** ** Reference manual: KL25P80M48SF0RM, Rev.3, Sep 2012 ** Version: rev. 2.5, 2015-02-19 ** Build: b170112 ** ** Abstract: ** Provides a system configuration function and a global variable that ** contains the system frequency. It configures the device and initializes ** the oscillator (PLL) that is part of the microcontroller device. ** ** Copyright (c) 2016 Freescale Semiconductor, Inc. ** Copyright 2016 - 2017 NXP ** Redistribution and use in source and binary forms, with or without modification, ** are permitted provided that the following conditions are met: ** ** o Redistributions of source code must retain the above copyright notice, this list ** of conditions and the following disclaimer. ** ** o Redistributions in binary form must reproduce the above copyright notice, this ** list of conditions and the following disclaimer in the documentation and/or ** other materials provided with the distribution. ** ** o Neither the name of the copyright holder nor the names of its ** contributors may be used to endorse or promote products derived from this ** software without specific prior written permission. ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED ** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE ** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ** ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; ** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ** ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS ** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ** ** http: www.nxp.com ** mail: support@nxp.com ** ** Revisions: ** - rev. 1.0 (2012-06-13) ** Initial version. ** - rev. 1.1 (2012-06-21) ** Update according to reference manual rev. 1. ** - rev. 1.2 (2012-08-01) ** Device type UARTLP changed to UART0. ** - rev. 1.3 (2012-10-04) ** Update according to reference manual rev. 3. ** - rev. 1.4 (2012-11-22) ** MCG module - bit LOLS in MCG_S register renamed to LOLS0. ** NV registers - bit EZPORT_DIS in NV_FOPT register removed. ** - rev. 1.5 (2013-04-05) ** Changed start of doxygen comment. ** - rev. 2.0 (2013-10-29) ** Register accessor macros added to the memory map. ** Symbols for Processor Expert memory map compatibility added to the memory map. ** Startup file for gcc has been updated according to CMSIS 3.2. ** System initialization updated. ** - rev. 2.1 (2014-07-16) ** Module access macro module_BASES replaced by module_BASE_PTRS. ** System initialization and startup updated. ** - rev. 2.2 (2014-08-22) ** System initialization updated - default clock config changed. ** - rev. 2.3 (2014-08-28) ** Update of startup files - possibility to override DefaultISR added. ** - rev. 2.4 (2014-10-14) ** Interrupt INT_LPTimer renamed to INT_LPTMR0. ** - rev. 2.5 (2015-02-19) ** Renamed interrupt vector LLW to LLWU. ** ** ################################################################### */ /*! * @file MKL25Z4 * @version 2.5 * @date 2015-02-19 * @brief Device specific configuration file for MKL25Z4 (header file) * * Provides a system configuration function and a global variable that contains * the system frequency. It configures the device and initializes the oscillator * (PLL) that is part of the microcontroller device. */ #ifndef _SYSTEM_MKL25Z4_H_ #define _SYSTEM_MKL25Z4_H_ /**< Symbol preventing repeated inclusion */ #ifdef __cplusplus extern "C" { #endif #include #ifndef DISABLE_WDOG #define DISABLE_WDOG 1 #endif /* Define clock source values */ #define CPU_XTAL_CLK_HZ 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */ #define CPU_INT_SLOW_CLK_HZ 32768u /* Value of the slow internal oscillator clock frequency in Hz */ #define CPU_INT_FAST_CLK_HZ 4000000u /* Value of the fast internal oscillator clock frequency in Hz */ /* RTC oscillator setting */ /* Low power mode enable */ /* SMC_PMPROT: AVLP=1,ALLS=1,AVLLS=1 */ #define SYSTEM_SMC_PMPROT_VALUE 0x2AU /* SMC_PMPROT */ #define DEFAULT_SYSTEM_CLOCK 20971520u /* Default System clock value */ /** * @brief System clock frequency (core clock) * * The system clock frequency supplied to the SysTick timer and the processor * core clock. This variable can be used by the user application to setup the * SysTick timer or configure other parameters. It may also be used by debugger to * query the frequency of the debug timer or configure the trace clock speed * SystemCoreClock is initialized with a correct predefined value. */ extern uint32_t SystemCoreClock; /** * @brief Setup the microcontroller system. * * Typically this function configures the oscillator (PLL) that is part of the * microcontroller device. For systems with variable clock speed it also updates * the variable SystemCoreClock. SystemInit is called from startup_device file. */ void SystemInit (void); /** * @brief Updates the SystemCoreClock variable. * * It must be called whenever the core clock is changed during program * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates * the current core clock. */ void SystemCoreClockUpdate (void); #ifdef __cplusplus } #endif #endif /* _SYSTEM_MKL25Z4_H_ */