TEAMUSB / mbed-src

mbed library sources

Dependents:   SPI_slave_frdm

Fork of mbed-src by mbed official

targets/cmsis/TARGET_Freescale/TARGET_K20XX/TARGET_TEENSY3_1/system_MK20DX256.h@445:3312ed629f01, 2015-01-15 (annotated)

Committer:
mbed_official
Date:
Thu Jan 15 19:30:07 2015 +0000
Revision:
445:3312ed629f01
Synchronized with git revision e21c65041d9a718f866ed6438e5791b13f9c6d91



Full URL: https://github.com/mbedmicro/mbed/commit/e21c65041d9a718f866ed6438e5791b13f9c6d91/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 445:3312ed629f01 1 /*
mbed_official 445:3312ed629f01 2 ** ###################################################################
mbed_official 445:3312ed629f01 3 ** Compilers: ARM Compiler
mbed_official 445:3312ed629f01 4 ** Freescale C/C++ for Embedded ARM
mbed_official 445:3312ed629f01 5 ** GNU C Compiler
mbed_official 445:3312ed629f01 6 ** IAR ANSI C/C++ Compiler for ARM
mbed_official 445:3312ed629f01 7 **
mbed_official 445:3312ed629f01 8 **
mbed_official 445:3312ed629f01 9 **
mbed_official 445:3312ed629f01 10 ** Version: rev. 2.0, 2012-03-19
mbed_official 445:3312ed629f01 11 **
mbed_official 445:3312ed629f01 12 ** Abstract:
mbed_official 445:3312ed629f01 13 ** Provides a system configuration function and a global variable that
mbed_official 445:3312ed629f01 14 ** contains the system frequency. It configures the device and initializes
mbed_official 445:3312ed629f01 15 ** the oscillator (PLL) that is part of the microcontroller device.
mbed_official 445:3312ed629f01 16 **
mbed_official 445:3312ed629f01 17 ** Copyright: 2015 Freescale Semiconductor, Inc. All Rights Reserved.
mbed_official 445:3312ed629f01 18 **
mbed_official 445:3312ed629f01 19 ** http: www.freescale.com
mbed_official 445:3312ed629f01 20 ** mail: support@freescale.com
mbed_official 445:3312ed629f01 21 **
mbed_official 445:3312ed629f01 22 ** Revisions:
mbed_official 445:3312ed629f01 23 ** - rev. 1.0 (2011-12-15)
mbed_official 445:3312ed629f01 24 ** Initial version
mbed_official 445:3312ed629f01 25 ** - rev. 2.0 (2012-03-19)
mbed_official 445:3312ed629f01 26 ** PDB Peripheral register structure updated.
mbed_official 445:3312ed629f01 27 ** DMA Registers and bits for unsupported DMA channels removed.
mbed_official 445:3312ed629f01 28 **
mbed_official 445:3312ed629f01 29 ** ###################################################################
mbed_official 445:3312ed629f01 30 */
mbed_official 445:3312ed629f01 31
mbed_official 445:3312ed629f01 32 /**
mbed_official 445:3312ed629f01 33 * @file MK20DX256
mbed_official 445:3312ed629f01 34 * @version 2.0
mbed_official 445:3312ed629f01 35 * @date 2012-03-19
mbed_official 445:3312ed629f01 36 * @brief Device specific configuration file for MK20DX256 (header file)
mbed_official 445:3312ed629f01 37 *
mbed_official 445:3312ed629f01 38 * Provides a system configuration function and a global variable that contains
mbed_official 445:3312ed629f01 39 * the system frequency. It configures the device and initializes the oscillator
mbed_official 445:3312ed629f01 40 * (PLL) that is part of the microcontroller device.
mbed_official 445:3312ed629f01 41 */
mbed_official 445:3312ed629f01 42
mbed_official 445:3312ed629f01 43 #ifndef SYSTEM_MK20DX256_H_
mbed_official 445:3312ed629f01 44 #define SYSTEM_MK20DX256_H_ /**< Symbol preventing repeated inclusion */
mbed_official 445:3312ed629f01 45
mbed_official 445:3312ed629f01 46 #ifdef __cplusplus
mbed_official 445:3312ed629f01 47 extern "C" {
mbed_official 445:3312ed629f01 48 #endif
mbed_official 445:3312ed629f01 49
mbed_official 445:3312ed629f01 50 #include <stdint.h>
mbed_official 445:3312ed629f01 51
mbed_official 445:3312ed629f01 52 /**
mbed_official 445:3312ed629f01 53 * @brief System clock frequency (core clock)
mbed_official 445:3312ed629f01 54 *
mbed_official 445:3312ed629f01 55 * The system clock frequency supplied to the SysTick timer and the processor
mbed_official 445:3312ed629f01 56 * core clock. This variable can be used by the user application to setup the
mbed_official 445:3312ed629f01 57 * SysTick timer or configure other parameters. It may also be used by debugger to
mbed_official 445:3312ed629f01 58 * query the frequency of the debug timer or configure the trace clock speed
mbed_official 445:3312ed629f01 59 * SystemCoreClock is initialized with a correct predefined value.
mbed_official 445:3312ed629f01 60 */
mbed_official 445:3312ed629f01 61 extern uint32_t SystemCoreClock;
mbed_official 445:3312ed629f01 62
mbed_official 445:3312ed629f01 63 /**
mbed_official 445:3312ed629f01 64 * @brief Setup the microcontroller system.
mbed_official 445:3312ed629f01 65 *
mbed_official 445:3312ed629f01 66 * Typically this function configures the oscillator (PLL) that is part of the
mbed_official 445:3312ed629f01 67 * microcontroller device. For systems with variable clock speed it also updates
mbed_official 445:3312ed629f01 68 * the variable SystemCoreClock. SystemInit is called from startup_device file.
mbed_official 445:3312ed629f01 69 */
mbed_official 445:3312ed629f01 70 void SystemInit (void);
mbed_official 445:3312ed629f01 71
mbed_official 445:3312ed629f01 72 /**
mbed_official 445:3312ed629f01 73 * @brief Updates the SystemCoreClock variable.
mbed_official 445:3312ed629f01 74 *
mbed_official 445:3312ed629f01 75 * It must be called whenever the core clock is changed during program
mbed_official 445:3312ed629f01 76 * execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates
mbed_official 445:3312ed629f01 77 * the current core clock.
mbed_official 445:3312ed629f01 78 */
mbed_official 445:3312ed629f01 79 void SystemCoreClockUpdate (void);
mbed_official 445:3312ed629f01 80
mbed_official 445:3312ed629f01 81 #ifdef __cplusplus
mbed_official 445:3312ed629f01 82 }
mbed_official 445:3312ed629f01 83 #endif
mbed_official 445:3312ed629f01 84
mbed_official 445:3312ed629f01 85 #endif /* #if !defined(SYSTEM_MK20DX256_H_) */