en 129 / mbed-dev

fix LPC812 PWM

Dependents:   IR_LED_Send

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_M0P/system_CMSDK_CM0plus.c@129:2e517c56bcfb, 2016-05-16 (annotated)

Committer:
nameless129
Date:
Mon May 16 16:50:30 2016 +0000
Revision:
129:2e517c56bcfb
Parent:
80:bdf1132a57cf 
PWM Fix:Duty 0%??H???????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* MPS2 CMSIS Library
bogdanm 0:9b334a45a8ff 2 *
mbed_official 80:bdf1132a57cf 3 * Copyright (c) 2006-2016 ARM Limited
bogdanm 0:9b334a45a8ff 4 * All rights reserved.
mbed_official 80:bdf1132a57cf 5 *
mbed_official 80:bdf1132a57cf 6 * Redistribution and use in source and binary forms, with or without
bogdanm 0:9b334a45a8ff 7 * modification, are permitted provided that the following conditions are met:
mbed_official 80:bdf1132a57cf 8 *
mbed_official 80:bdf1132a57cf 9 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 10 * this list of conditions and the following disclaimer.
mbed_official 80:bdf1132a57cf 11 *
mbed_official 80:bdf1132a57cf 12 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 80:bdf1132a57cf 13 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 14 * and/or other materials provided with the distribution.
mbed_official 80:bdf1132a57cf 15 *
mbed_official 80:bdf1132a57cf 16 * 3. Neither the name of the copyright holder nor the names of its contributors
mbed_official 80:bdf1132a57cf 17 * may be used to endorse or promote products derived from this software without
bogdanm 0:9b334a45a8ff 18 * specific prior written permission.
mbed_official 80:bdf1132a57cf 19 *
mbed_official 80:bdf1132a57cf 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 80:bdf1132a57cf 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 80:bdf1132a57cf 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
mbed_official 80:bdf1132a57cf 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
mbed_official 80:bdf1132a57cf 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
mbed_official 80:bdf1132a57cf 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
mbed_official 80:bdf1132a57cf 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbed_official 80:bdf1132a57cf 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbed_official 80:bdf1132a57cf 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
mbed_official 80:bdf1132a57cf 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbed_official 80:bdf1132a57cf 30 * POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 31 *******************************************************************************
bogdanm 0:9b334a45a8ff 32 * @file system_CMSDK_CM0plus.c
bogdanm 0:9b334a45a8ff 33 * @brief CMSIS Device System Source File for
bogdanm 0:9b334a45a8ff 34 * CMSDK_M0 Device
bogdanm 0:9b334a45a8ff 35 *
bogdanm 0:9b334a45a8ff 36 *******************************************************************************/
bogdanm 0:9b334a45a8ff 37
bogdanm 0:9b334a45a8ff 38
bogdanm 0:9b334a45a8ff 39 #include "CMSDK_CM0plus.h"
bogdanm 0:9b334a45a8ff 40
bogdanm 0:9b334a45a8ff 41 /*----------------------------------------------------------------------------
bogdanm 0:9b334a45a8ff 42 Define clocks
bogdanm 0:9b334a45a8ff 43 *----------------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 44 #define __XTAL (50000000UL) /* Oscillator frequency */
bogdanm 0:9b334a45a8ff 45
bogdanm 0:9b334a45a8ff 46 #define __SYSTEM_CLOCK (__XTAL / 2)
bogdanm 0:9b334a45a8ff 47
bogdanm 0:9b334a45a8ff 48
bogdanm 0:9b334a45a8ff 49 /*----------------------------------------------------------------------------
bogdanm 0:9b334a45a8ff 50 Clock Variable definitions
bogdanm 0:9b334a45a8ff 51 *----------------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 52 uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/
bogdanm 0:9b334a45a8ff 53
bogdanm 0:9b334a45a8ff 54
bogdanm 0:9b334a45a8ff 55 /*----------------------------------------------------------------------------
bogdanm 0:9b334a45a8ff 56 Clock functions
bogdanm 0:9b334a45a8ff 57 *----------------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 58 /**
bogdanm 0:9b334a45a8ff 59 * Update SystemCoreClock variable
bogdanm 0:9b334a45a8ff 60 *
bogdanm 0:9b334a45a8ff 61 * @param none
bogdanm 0:9b334a45a8ff 62 * @return none
bogdanm 0:9b334a45a8ff 63 *
bogdanm 0:9b334a45a8ff 64 * @brief Updates the SystemCoreClock with current core Clock
bogdanm 0:9b334a45a8ff 65 * retrieved from cpu registers.
bogdanm 0:9b334a45a8ff 66 */
bogdanm 0:9b334a45a8ff 67 void SystemCoreClockUpdate (void)
bogdanm 0:9b334a45a8ff 68 {
bogdanm 0:9b334a45a8ff 69
bogdanm 0:9b334a45a8ff 70 SystemCoreClock = __SYSTEM_CLOCK;
bogdanm 0:9b334a45a8ff 71
bogdanm 0:9b334a45a8ff 72 }
bogdanm 0:9b334a45a8ff 73
bogdanm 0:9b334a45a8ff 74 /**
bogdanm 0:9b334a45a8ff 75 * Initialize the system
bogdanm 0:9b334a45a8ff 76 *
bogdanm 0:9b334a45a8ff 77 * @param none
bogdanm 0:9b334a45a8ff 78 * @return none
bogdanm 0:9b334a45a8ff 79 *
bogdanm 0:9b334a45a8ff 80 * @brief Setup the microcontroller system.
bogdanm 0:9b334a45a8ff 81 * Initialize the System.
bogdanm 0:9b334a45a8ff 82 */
bogdanm 0:9b334a45a8ff 83 void SystemInit (void)
bogdanm 0:9b334a45a8ff 84 {
bogdanm 0:9b334a45a8ff 85
bogdanm 0:9b334a45a8ff 86 SystemCoreClock = __SYSTEM_CLOCK;
bogdanm 0:9b334a45a8ff 87
bogdanm 0:9b334a45a8ff 88 }