Steve Kim / mbed-src

mbed library sources(for async_print)

Dependents:   AsyncPrint

Fork of mbed-src by mbed official

targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_M0/system_CMSDK_CM0.c@580:3c14cb9b87c5, 2015-07-02 (annotated)

Committer:
mbed_official
Date:
Thu Jul 02 16:15:09 2015 +0100
Revision:
580:3c14cb9b87c5
Synchronized with git revision 213caf296f26963a7bea129b8ec4f33bbd1e6588



Full URL: https://github.com/mbedmicro/mbed/commit/213caf296f26963a7bea129b8ec4f33bbd1e6588/



commit of mps2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 580:3c14cb9b87c5 1 /* MPS2 CMSIS Library
mbed_official 580:3c14cb9b87c5 2 *
mbed_official 580:3c14cb9b87c5 3 * Copyright (c) 2006-2015 ARM Limited
mbed_official 580:3c14cb9b87c5 4 * All rights reserved.
mbed_official 580:3c14cb9b87c5 5 *
mbed_official 580:3c14cb9b87c5 6 * Redistribution and use in source and binary forms, with or without
mbed_official 580:3c14cb9b87c5 7 * modification, are permitted provided that the following conditions are met:
mbed_official 580:3c14cb9b87c5 8 *
mbed_official 580:3c14cb9b87c5 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 580:3c14cb9b87c5 10 * this list of conditions and the following disclaimer.
mbed_official 580:3c14cb9b87c5 11 *
mbed_official 580:3c14cb9b87c5 12 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 580:3c14cb9b87c5 13 * this list of conditions and the following disclaimer in the documentation
mbed_official 580:3c14cb9b87c5 14 * and/or other materials provided with the distribution.
mbed_official 580:3c14cb9b87c5 15 *
mbed_official 580:3c14cb9b87c5 16 * 3. Neither the name of the copyright holder nor the names of its contributors
mbed_official 580:3c14cb9b87c5 17 * may be used to endorse or promote products derived from this software without
mbed_official 580:3c14cb9b87c5 18 * specific prior written permission.
mbed_official 580:3c14cb9b87c5 19 *
mbed_official 580:3c14cb9b87c5 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 580:3c14cb9b87c5 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 580:3c14cb9b87c5 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
mbed_official 580:3c14cb9b87c5 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
mbed_official 580:3c14cb9b87c5 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
mbed_official 580:3c14cb9b87c5 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
mbed_official 580:3c14cb9b87c5 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbed_official 580:3c14cb9b87c5 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbed_official 580:3c14cb9b87c5 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
mbed_official 580:3c14cb9b87c5 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbed_official 580:3c14cb9b87c5 30 * POSSIBILITY OF SUCH DAMAGE.
mbed_official 580:3c14cb9b87c5 31 *******************************************************************************
mbed_official 580:3c14cb9b87c5 32 * @file system_CMSDK_CM0.c
mbed_official 580:3c14cb9b87c5 33 * @brief CMSIS Device System Source File for
mbed_official 580:3c14cb9b87c5 34 * CMSDK_M0 Device
mbed_official 580:3c14cb9b87c5 35 * @version V3.02
mbed_official 580:3c14cb9b87c5 36 * @date 15. November 2013
mbed_official 580:3c14cb9b87c5 37 *
mbed_official 580:3c14cb9b87c5 38 * @note
mbed_official 580:3c14cb9b87c5 39 *
mbed_official 580:3c14cb9b87c5 40 *******************************************************************************/
mbed_official 580:3c14cb9b87c5 41
mbed_official 580:3c14cb9b87c5 42
mbed_official 580:3c14cb9b87c5 43 #include "CMSDK_CM0.h"
mbed_official 580:3c14cb9b87c5 44
mbed_official 580:3c14cb9b87c5 45 /*----------------------------------------------------------------------------
mbed_official 580:3c14cb9b87c5 46 Define clocks
mbed_official 580:3c14cb9b87c5 47 *----------------------------------------------------------------------------*/
mbed_official 580:3c14cb9b87c5 48 #define __XTAL (50000000UL) /* Oscillator frequency */
mbed_official 580:3c14cb9b87c5 49
mbed_official 580:3c14cb9b87c5 50 #define __SYSTEM_CLOCK (__XTAL / 2)
mbed_official 580:3c14cb9b87c5 51
mbed_official 580:3c14cb9b87c5 52
mbed_official 580:3c14cb9b87c5 53 /*----------------------------------------------------------------------------
mbed_official 580:3c14cb9b87c5 54 Clock Variable definitions
mbed_official 580:3c14cb9b87c5 55 *----------------------------------------------------------------------------*/
mbed_official 580:3c14cb9b87c5 56 uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/
mbed_official 580:3c14cb9b87c5 57
mbed_official 580:3c14cb9b87c5 58
mbed_official 580:3c14cb9b87c5 59 /*----------------------------------------------------------------------------
mbed_official 580:3c14cb9b87c5 60 Clock functions
mbed_official 580:3c14cb9b87c5 61 *----------------------------------------------------------------------------*/
mbed_official 580:3c14cb9b87c5 62 /**
mbed_official 580:3c14cb9b87c5 63 * Update SystemCoreClock variable
mbed_official 580:3c14cb9b87c5 64 *
mbed_official 580:3c14cb9b87c5 65 * @param none
mbed_official 580:3c14cb9b87c5 66 * @return none
mbed_official 580:3c14cb9b87c5 67 *
mbed_official 580:3c14cb9b87c5 68 * @brief Updates the SystemCoreClock with current core Clock
mbed_official 580:3c14cb9b87c5 69 * retrieved from cpu registers.
mbed_official 580:3c14cb9b87c5 70 */
mbed_official 580:3c14cb9b87c5 71 void SystemCoreClockUpdate (void)
mbed_official 580:3c14cb9b87c5 72 {
mbed_official 580:3c14cb9b87c5 73
mbed_official 580:3c14cb9b87c5 74 SystemCoreClock = __SYSTEM_CLOCK;
mbed_official 580:3c14cb9b87c5 75
mbed_official 580:3c14cb9b87c5 76 }
mbed_official 580:3c14cb9b87c5 77
mbed_official 580:3c14cb9b87c5 78 /**
mbed_official 580:3c14cb9b87c5 79 * Initialize the system
mbed_official 580:3c14cb9b87c5 80 *
mbed_official 580:3c14cb9b87c5 81 * @param none
mbed_official 580:3c14cb9b87c5 82 * @return none
mbed_official 580:3c14cb9b87c5 83 *
mbed_official 580:3c14cb9b87c5 84 * @brief Setup the microcontroller system.
mbed_official 580:3c14cb9b87c5 85 * Initialize the System.
mbed_official 580:3c14cb9b87c5 86 */
mbed_official 580:3c14cb9b87c5 87 void SystemInit (void)
mbed_official 580:3c14cb9b87c5 88 {
mbed_official 580:3c14cb9b87c5 89
mbed_official 580:3c14cb9b87c5 90 SystemCoreClock = __SYSTEM_CLOCK;
mbed_official 580:3c14cb9b87c5 91
mbed_official 580:3c14cb9b87c5 92 }