mbed library sources
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targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_M4/system_CMSDK_CM4.c@616:ade316e51a72, 2015-09-02 (annotated)
- Committer:
- mbed_official
- Date:
- Wed Sep 02 17:15:54 2015 +0100
- Revision:
- 616:ade316e51a72
- Parent:
- 580:3c14cb9b87c5
Synchronized with git revision 8a32badea1a72a2c32d77537eb647f39025ce86c
Full URL: https://github.com/mbedmicro/mbed/commit/8a32badea1a72a2c32d77537eb647f39025ce86c/
Who changed what in which revision?
User | Revision | Line number | New 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_CM4.c |
mbed_official | 580:3c14cb9b87c5 | 33 | * @brief CMSIS Device System Source File for |
mbed_official | 580:3c14cb9b87c5 | 34 | * CMSDK_M4 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 | |
mbed_official | 580:3c14cb9b87c5 | 44 | #include "CMSDK_CM4.h" |
mbed_official | 580:3c14cb9b87c5 | 45 | |
mbed_official | 580:3c14cb9b87c5 | 46 | /*---------------------------------------------------------------------------- |
mbed_official | 580:3c14cb9b87c5 | 47 | Define clocks |
mbed_official | 580:3c14cb9b87c5 | 48 | *----------------------------------------------------------------------------*/ |
mbed_official | 580:3c14cb9b87c5 | 49 | #define __XTAL (50000000UL) /* Oscillator frequency */ |
mbed_official | 580:3c14cb9b87c5 | 50 | |
mbed_official | 580:3c14cb9b87c5 | 51 | #define __SYSTEM_CLOCK (__XTAL / 2) |
mbed_official | 580:3c14cb9b87c5 | 52 | |
mbed_official | 580:3c14cb9b87c5 | 53 | |
mbed_official | 580:3c14cb9b87c5 | 54 | /*---------------------------------------------------------------------------- |
mbed_official | 580:3c14cb9b87c5 | 55 | Clock Variable definitions |
mbed_official | 580:3c14cb9b87c5 | 56 | *----------------------------------------------------------------------------*/ |
mbed_official | 580:3c14cb9b87c5 | 57 | uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/ |
mbed_official | 580:3c14cb9b87c5 | 58 | |
mbed_official | 580:3c14cb9b87c5 | 59 | |
mbed_official | 580:3c14cb9b87c5 | 60 | /*---------------------------------------------------------------------------- |
mbed_official | 580:3c14cb9b87c5 | 61 | Clock functions |
mbed_official | 580:3c14cb9b87c5 | 62 | *----------------------------------------------------------------------------*/ |
mbed_official | 580:3c14cb9b87c5 | 63 | /** |
mbed_official | 580:3c14cb9b87c5 | 64 | * Update SystemCoreClock variable |
mbed_official | 580:3c14cb9b87c5 | 65 | * |
mbed_official | 580:3c14cb9b87c5 | 66 | * @param none |
mbed_official | 580:3c14cb9b87c5 | 67 | * @return none |
mbed_official | 580:3c14cb9b87c5 | 68 | * |
mbed_official | 580:3c14cb9b87c5 | 69 | * @brief Updates the SystemCoreClock with current core Clock |
mbed_official | 580:3c14cb9b87c5 | 70 | * retrieved from cpu registers. |
mbed_official | 580:3c14cb9b87c5 | 71 | */ |
mbed_official | 580:3c14cb9b87c5 | 72 | void SystemCoreClockUpdate (void) |
mbed_official | 580:3c14cb9b87c5 | 73 | { |
mbed_official | 580:3c14cb9b87c5 | 74 | |
mbed_official | 580:3c14cb9b87c5 | 75 | SystemCoreClock = __SYSTEM_CLOCK; |
mbed_official | 580:3c14cb9b87c5 | 76 | |
mbed_official | 580:3c14cb9b87c5 | 77 | } |
mbed_official | 580:3c14cb9b87c5 | 78 | |
mbed_official | 580:3c14cb9b87c5 | 79 | /** |
mbed_official | 580:3c14cb9b87c5 | 80 | * Initialize the system |
mbed_official | 580:3c14cb9b87c5 | 81 | * |
mbed_official | 580:3c14cb9b87c5 | 82 | * @param none |
mbed_official | 580:3c14cb9b87c5 | 83 | * @return none |
mbed_official | 580:3c14cb9b87c5 | 84 | * |
mbed_official | 580:3c14cb9b87c5 | 85 | * @brief Setup the microcontroller system. |
mbed_official | 580:3c14cb9b87c5 | 86 | * Initialize the System. |
mbed_official | 580:3c14cb9b87c5 | 87 | */ |
mbed_official | 580:3c14cb9b87c5 | 88 | void SystemInit (void) |
mbed_official | 580:3c14cb9b87c5 | 89 | { |
mbed_official | 580:3c14cb9b87c5 | 90 | #if (__FPU_USED == 1) |
mbed_official | 580:3c14cb9b87c5 | 91 | SCB->CPACR |= ((3UL << 10*2) | /* set CP10 Full Access */ |
mbed_official | 580:3c14cb9b87c5 | 92 | (3UL << 11*2) ); /* set CP11 Full Access */ |
mbed_official | 580:3c14cb9b87c5 | 93 | #endif |
mbed_official | 580:3c14cb9b87c5 | 94 | |
mbed_official | 580:3c14cb9b87c5 | 95 | #ifdef UNALIGNED_SUPPORT_DISABLE |
mbed_official | 580:3c14cb9b87c5 | 96 | SCB->CCR |= SCB_CCR_UNALIGN_TRP_Msk; |
mbed_official | 580:3c14cb9b87c5 | 97 | #endif |
mbed_official | 580:3c14cb9b87c5 | 98 | |
mbed_official | 580:3c14cb9b87c5 | 99 | SystemCoreClock = __SYSTEM_CLOCK; |
mbed_official | 580:3c14cb9b87c5 | 100 | |
mbed_official | 580:3c14cb9b87c5 | 101 | } |