system_MK26F18.h

00001 /*
00002 ** ###################################################################
00003 **     Processors:          MK26FN2M0CAC18
00004 **                          MK26FN2M0VLQ18
00005 **                          MK26FN2M0VMD18
00006 **                          MK26FN2M0VMI18
00007 **
00008 **     Compilers:           Keil ARM C/C++ Compiler
00009 **                          Freescale C/C++ for Embedded ARM
00010 **                          GNU C Compiler
00011 **                          IAR ANSI C/C++ Compiler for ARM
00012 **                          MCUXpresso Compiler
00013 **
00014 **     Reference manual:    MK26P169M180SF5RM, Rev. 1, Mar 2015
00015 **     Version:             rev. 2.0, 2015-03-25
00016 **     Build:               b180801
00017 **
00018 **     Abstract:
00019 **         Provides a system configuration function and a global variable that
00020 **         contains the system frequency. It configures the device and initializes
00021 **         the oscillator (PLL) that is part of the microcontroller device.
00022 **
00023 **     Copyright 2016 Freescale Semiconductor, Inc.
00024 **     Copyright 2016-2018 NXP
00025 **
00026 **     SPDX-License-Identifier: BSD-3-Clause
00027 **
00028 **     http:                 www.nxp.com
00029 **     mail:                 support@nxp.com
00030 **
00031 **     Revisions:
00032 **     - rev. 1.0 (2014-12-04)
00033 **         Initial version.
00034 **     - rev. 1.1 (2015-02-19)
00035 **         Renamed interrupt vector LLW to LLWU.
00036 **     - rev. 2.0 (2015-03-25)
00037 **         Registers updated according to the reference manual revision 1, March 2015
00038 **
00039 ** ###################################################################
00040 */
00041 
00042 /*!
00043  * @file MK26F18
00044  * @version 2.0
00045  * @date 2015-03-25
00046  * @brief Device specific configuration file for MK26F18 (header file)
00047  *
00048  * Provides a system configuration function and a global variable that contains
00049  * the system frequency. It configures the device and initializes the oscillator
00050  * (PLL) that is part of the microcontroller device.
00051  */
00052 
00053 #ifndef _SYSTEM_MK26F18_H_
00054 #define _SYSTEM_MK26F18_H_                       /**< Symbol preventing repeated inclusion */
00055 
00056 #ifdef __cplusplus
00057 extern "C" {
00058 #endif
00059 
00060 #include <stdint.h>
00061 
00062 
00063 #ifndef DISABLE_WDOG
00064   #define DISABLE_WDOG                 1
00065 #endif
00066 
00067 /* Define clock source values */
00068 
00069 #define CPU_XTAL_CLK_HZ                16000000U           /* Value of the external crystal or oscillator clock frequency of the system oscillator (OSC) in Hz */
00070 #define CPU_XTAL32k_CLK_HZ             32768U              /* Value of the external 32k crystal or oscillator clock frequency of the RTC in Hz */
00071 #define CPU_INT_SLOW_CLK_HZ            32768U              /* Value of the slow internal oscillator clock frequency in Hz */
00072 #define CPU_INT_FAST_CLK_HZ            4000000U            /* Value of the fast internal oscillator clock frequency in Hz */
00073 #define CPU_INT_IRC_CLK_HZ             48000000U           /* Value of the 48M internal oscillator clock frequency in Hz */
00074 
00075 /* RTC oscillator setting */
00076 /* RTC_CR: SC2P=0,SC4P=0,SC8P=0,SC16P=0,CLKO=1,OSCE=1,WPS=0,UM=0,SUP=0,WPE=0,SWR=0 */
00077 #define SYSTEM_RTC_CR_VALUE            0x0300U             /* RTC_CR */
00078 
00079 /* Low power mode enable */
00080 /* SMC_PMPROT: AHSRUN=1,AVLP=1,ALLS=1,AVLLS=1 */
00081 #define SYSTEM_SMC_PMPROT_VALUE        0xAAU               /* SMC_PMPROT */
00082 
00083 #define DEFAULT_SYSTEM_CLOCK           20971520u
00084 
00085 
00086 /**
00087  * @brief System clock frequency (core clock)
00088  *
00089  * The system clock frequency supplied to the SysTick timer and the processor
00090  * core clock. This variable can be used by the user application to setup the
00091  * SysTick timer or configure other parameters. It may also be used by debugger to
00092  * query the frequency of the debug timer or configure the trace clock speed
00093  * SystemCoreClock is initialized with a correct predefined value.
00094  */
00095 extern uint32_t SystemCoreClock;
00096 
00097 /**
00098  * @brief Setup the microcontroller system.
00099  *
00100  * Typically this function configures the oscillator (PLL) that is part of the
00101  * microcontroller device. For systems with variable clock speed it also updates
00102  * the variable SystemCoreClock. SystemInit is called from startup_device file.
00103  */
00104 void SystemInit (void);
00105 
00106 /**
00107  * @brief Updates the SystemCoreClock variable.
00108  *
00109  * It must be called whenever the core clock is changed during program
00110  * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates
00111  * the current core clock.
00112  */
00113 void SystemCoreClockUpdate (void);
00114 
00115 /**
00116  * @brief SystemInit function hook.
00117  *
00118  * This weak function allows to call specific initialization code during the
00119  * SystemInit() execution.This can be used when an application specific code needs
00120  * to be called as close to the reset entry as possible (for example the Multicore
00121  * Manager MCMGR_EarlyInit() function call).
00122  * NOTE: No global r/w variables can be used in this hook function because the
00123  * initialization of these variables happens after this function.
00124  */
00125 void SystemInitHook (void);
00126 
00127 #ifdef __cplusplus
00128 }
00129 #endif
00130 
00131 #endif  /* _SYSTEM_MK26F18_H_ */