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This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_BEID/system_CMSDK_BEID.c@624:83778a75d1b4, 2015-09-25 (annotated)

Committer:
mbed_official
Date:
Fri Sep 25 11:45:09 2015 +0100
Revision:
624:83778a75d1b4
Synchronized with git revision b290644b9cdd33d24fc3f629368795b3d9c386fe



Full URL: https://github.com/mbedmicro/mbed/commit/b290644b9cdd33d24fc3f629368795b3d9c386fe/



changes for adding IoT Subsystem for Cortex-M target

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 624:83778a75d1b4 1 /**************************************************************************//**
mbed_official 624:83778a75d1b4 2 * @file system_CMSDK_BEID.c
mbed_official 624:83778a75d1b4 3 * @brief CMSIS Device System Source File for
mbed_official 624:83778a75d1b4 4 * CMSDK_M3 Device
mbed_official 624:83778a75d1b4 5 * @version V3.02
mbed_official 624:83778a75d1b4 6 * @date 15. November 2013
mbed_official 624:83778a75d1b4 7 *
mbed_official 624:83778a75d1b4 8 * @note
mbed_official 624:83778a75d1b4 9 *
mbed_official 624:83778a75d1b4 10 ******************************************************************************/
mbed_official 624:83778a75d1b4 11 /* Copyright (c) 2011 - 2013 ARM LIMITED
mbed_official 624:83778a75d1b4 12
mbed_official 624:83778a75d1b4 13 All rights reserved.
mbed_official 624:83778a75d1b4 14 Redistribution and use in source and binary forms, with or without
mbed_official 624:83778a75d1b4 15 modification, are permitted provided that the following conditions are met:
mbed_official 624:83778a75d1b4 16 - Redistributions of source code must retain the above copyright
mbed_official 624:83778a75d1b4 17 notice, this list of conditions and the following disclaimer.
mbed_official 624:83778a75d1b4 18 - Redistributions in binary form must reproduce the above copyright
mbed_official 624:83778a75d1b4 19 notice, this list of conditions and the following disclaimer in the
mbed_official 624:83778a75d1b4 20 documentation and/or other materials provided with the distribution.
mbed_official 624:83778a75d1b4 21 - Neither the name of ARM nor the names of its contributors may be used
mbed_official 624:83778a75d1b4 22 to endorse or promote products derived from this software without
mbed_official 624:83778a75d1b4 23 specific prior written permission.
mbed_official 624:83778a75d1b4 24 *
mbed_official 624:83778a75d1b4 25 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 624:83778a75d1b4 26 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 624:83778a75d1b4 27 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
mbed_official 624:83778a75d1b4 28 ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
mbed_official 624:83778a75d1b4 29 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
mbed_official 624:83778a75d1b4 30 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
mbed_official 624:83778a75d1b4 31 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbed_official 624:83778a75d1b4 32 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbed_official 624:83778a75d1b4 33 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
mbed_official 624:83778a75d1b4 34 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbed_official 624:83778a75d1b4 35 POSSIBILITY OF SUCH DAMAGE.
mbed_official 624:83778a75d1b4 36 ---------------------------------------------------------------------------*/
mbed_official 624:83778a75d1b4 37
mbed_official 624:83778a75d1b4 38
mbed_official 624:83778a75d1b4 39 #include "CMSDK_BEID.h"
mbed_official 624:83778a75d1b4 40
mbed_official 624:83778a75d1b4 41 /*----------------------------------------------------------------------------
mbed_official 624:83778a75d1b4 42 Define clocks
mbed_official 624:83778a75d1b4 43 *----------------------------------------------------------------------------*/
mbed_official 624:83778a75d1b4 44 #define __XTAL (50000000UL) /* Oscillator frequency */
mbed_official 624:83778a75d1b4 45
mbed_official 624:83778a75d1b4 46 #define __SYSTEM_CLOCK (__XTAL / 2)
mbed_official 624:83778a75d1b4 47
mbed_official 624:83778a75d1b4 48
mbed_official 624:83778a75d1b4 49 /*----------------------------------------------------------------------------
mbed_official 624:83778a75d1b4 50 Clock Variable definitions
mbed_official 624:83778a75d1b4 51 *----------------------------------------------------------------------------*/
mbed_official 624:83778a75d1b4 52 uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/
mbed_official 624:83778a75d1b4 53
mbed_official 624:83778a75d1b4 54
mbed_official 624:83778a75d1b4 55 /*----------------------------------------------------------------------------
mbed_official 624:83778a75d1b4 56 Clock functions
mbed_official 624:83778a75d1b4 57 *----------------------------------------------------------------------------*/
mbed_official 624:83778a75d1b4 58 /**
mbed_official 624:83778a75d1b4 59 * Update SystemCoreClock variable
mbed_official 624:83778a75d1b4 60 *
mbed_official 624:83778a75d1b4 61 * @param none
mbed_official 624:83778a75d1b4 62 * @return none
mbed_official 624:83778a75d1b4 63 *
mbed_official 624:83778a75d1b4 64 * @brief Updates the SystemCoreClock with current core Clock
mbed_official 624:83778a75d1b4 65 * retrieved from cpu registers.
mbed_official 624:83778a75d1b4 66 */
mbed_official 624:83778a75d1b4 67 void SystemCoreClockUpdate (void)
mbed_official 624:83778a75d1b4 68 {
mbed_official 624:83778a75d1b4 69
mbed_official 624:83778a75d1b4 70 SystemCoreClock = __SYSTEM_CLOCK;
mbed_official 624:83778a75d1b4 71
mbed_official 624:83778a75d1b4 72 }
mbed_official 624:83778a75d1b4 73
mbed_official 624:83778a75d1b4 74 /**
mbed_official 624:83778a75d1b4 75 * Initialize the system
mbed_official 624:83778a75d1b4 76 *
mbed_official 624:83778a75d1b4 77 * @param none
mbed_official 624:83778a75d1b4 78 * @return none
mbed_official 624:83778a75d1b4 79 *
mbed_official 624:83778a75d1b4 80 * @brief Setup the microcontroller system.
mbed_official 624:83778a75d1b4 81 * Initialize the System.
mbed_official 624:83778a75d1b4 82 */
mbed_official 624:83778a75d1b4 83 void SystemInit (void)
mbed_official 624:83778a75d1b4 84 {
mbed_official 624:83778a75d1b4 85
mbed_official 624:83778a75d1b4 86 #ifdef UNALIGNED_SUPPORT_DISABLE
mbed_official 624:83778a75d1b4 87 SCB->CCR |= SCB_CCR_UNALIGN_TRP_Msk;
mbed_official 624:83778a75d1b4 88 #endif
mbed_official 624:83778a75d1b4 89
mbed_official 624:83778a75d1b4 90 SystemCoreClock = __SYSTEM_CLOCK;
mbed_official 624:83778a75d1b4 91
mbed_official 624:83778a75d1b4 92 // Enable AHB and APB clock
mbed_official 624:83778a75d1b4 93 CMSDK_SYSCON->AHBCLKCFG0SET = 0xF; // GPIO
mbed_official 624:83778a75d1b4 94 CMSDK_SYSCON->APBCLKCFG0SET = 0x37; // UART0, UART1, TIMER0, TIMER1, DUAL TIMER
mbed_official 624:83778a75d1b4 95 }