/* ** ################################################################### ** Processor: MKW24D512VHA5 ** Compilers: Keil ARM C/C++ Compiler ** Freescale C/C++ for Embedded ARM ** GNU C Compiler ** IAR ANSI C/C++ Compiler for ARM ** ** Reference manual: MKW2xDRM Rev.2 July 2014 ** Version: rev. 2.0, 2014-11-26 ** Build: b160512 ** ** 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. ** All rights reserved. ** ** 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 Freescale Semiconductor, Inc. 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.freescale.com ** mail: support@freescale.com ** ** Revisions: ** - rev. 1.0 (2013-11-22) ** Initial version. ** - rev. 2.0 (2014-11-26) ** update of SystemInit() imlementation ** Module access macro module_BASES replaced by module_BASE_PTRS. ** Register accessor macros added to the memory map. ** MCG - bit LOLS in MCG_S register renamed to LOLS0. ** DAC0 registers removed. ** ** ################################################################### */ /*! * @file MKW24D5 * @version 2.0 * @date 2014-11-26 * @brief Device specific configuration file for MKW24D5 (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_MKW24D5_H_ #define _SYSTEM_MKW24D5_H_ /**< Symbol preventing repeated inclusion */ #ifdef __cplusplus extern "C" { #endif #include <stdint.h> #ifndef DISABLE_WDOG #define DISABLE_WDOG 1 #endif /* Define clock source values */ #define CPU_XTAL32k_CLK_HZ 32768U /* Value of the external 32k crystal or oscillator clock frequency of the RTC 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 */ /* RTC_CR: SC2P=0,SC4P=0,SC8P=0,SC16P=0,CLKO=1,OSCE=1,WPS=0,UM=0,SUP=0,WPE=0,SWR=0 */ #define SYSTEM_RTC_CR_VALUE 0x0300U /* RTC_CR */ /* 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 */ #define CPU_XTAL_CLK_HZ 4000000U /* Value of the clock provided by the wireless modem by default */ /** * @brief Configure the external clock source * * The wireless modem present in the system can supply clock which can be used * as a clock source for the whole system. This function is defined as weak. * */ extern uint8_t ExtClk_Setup_HookUp(uint32_t clk_out_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_MKW24D5_H_ */