Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_ARM_SSG/TARGET_IOTSS_BEID/system_CMSDK_BEID.c@80:bdf1132a57cf, 2016-03-02 (annotated)

Committer:
mbed_official
Date:
Wed Mar 02 14:30:11 2016 +0000
Revision:
80:bdf1132a57cf
Synchronized with git revision de3b14ec9234d586b155fd24badc22775489a3dc



Full URL: https://github.com/mbedmicro/mbed/commit/de3b14ec9234d586b155fd24badc22775489a3dc/



latest changes to add arduino support, plus fixes for IOTSS BEID

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 80:bdf1132a57cf 1 /* MPS2 CMSIS Library
mbed_official 80:bdf1132a57cf 2 *
mbed_official 80:bdf1132a57cf 3 * Copyright (c) 2006-2016 ARM Limited
mbed_official 80:bdf1132a57cf 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
mbed_official 80:bdf1132a57cf 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,
mbed_official 80:bdf1132a57cf 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
mbed_official 80:bdf1132a57cf 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
mbed_official 80:bdf1132a57cf 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.
mbed_official 80:bdf1132a57cf 31 *******************************************************************************
mbed_official 80:bdf1132a57cf 32 * @file system_CMSDK_BEID.c
mbed_official 80:bdf1132a57cf 33 * @brief CMSIS Device System Source File for
mbed_official 80:bdf1132a57cf 34 * CMSDK_BEID Device
mbed_official 80:bdf1132a57cf 35 *
mbed_official 80:bdf1132a57cf 36 *******************************************************************************/
mbed_official 80:bdf1132a57cf 37
mbed_official 80:bdf1132a57cf 38
mbed_official 80:bdf1132a57cf 39 #include "CMSDK_BEID.h"
mbed_official 80:bdf1132a57cf 40
mbed_official 80:bdf1132a57cf 41 /*----------------------------------------------------------------------------
mbed_official 80:bdf1132a57cf 42 Define clocks
mbed_official 80:bdf1132a57cf 43 *----------------------------------------------------------------------------*/
mbed_official 80:bdf1132a57cf 44 #define __XTAL (48000000UL) /* Oscillator frequency */
mbed_official 80:bdf1132a57cf 45
mbed_official 80:bdf1132a57cf 46 #define __SYSTEM_CLOCK (__XTAL / 2)
mbed_official 80:bdf1132a57cf 47
mbed_official 80:bdf1132a57cf 48
mbed_official 80:bdf1132a57cf 49 /*----------------------------------------------------------------------------
mbed_official 80:bdf1132a57cf 50 Clock Variable definitions
mbed_official 80:bdf1132a57cf 51 *----------------------------------------------------------------------------*/
mbed_official 80:bdf1132a57cf 52 uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/
mbed_official 80:bdf1132a57cf 53
mbed_official 80:bdf1132a57cf 54
mbed_official 80:bdf1132a57cf 55 /*----------------------------------------------------------------------------
mbed_official 80:bdf1132a57cf 56 Clock functions
mbed_official 80:bdf1132a57cf 57 *----------------------------------------------------------------------------*/
mbed_official 80:bdf1132a57cf 58 /**
mbed_official 80:bdf1132a57cf 59 * Update SystemCoreClock variable
mbed_official 80:bdf1132a57cf 60 *
mbed_official 80:bdf1132a57cf 61 * @param none
mbed_official 80:bdf1132a57cf 62 * @return none
mbed_official 80:bdf1132a57cf 63 *
mbed_official 80:bdf1132a57cf 64 * @brief Updates the SystemCoreClock with current core Clock
mbed_official 80:bdf1132a57cf 65 * retrieved from cpu registers.
mbed_official 80:bdf1132a57cf 66 */
mbed_official 80:bdf1132a57cf 67 void SystemCoreClockUpdate (void)
mbed_official 80:bdf1132a57cf 68 {
mbed_official 80:bdf1132a57cf 69
mbed_official 80:bdf1132a57cf 70 SystemCoreClock = __SYSTEM_CLOCK;
mbed_official 80:bdf1132a57cf 71
mbed_official 80:bdf1132a57cf 72 }
mbed_official 80:bdf1132a57cf 73
mbed_official 80:bdf1132a57cf 74 /**
mbed_official 80:bdf1132a57cf 75 * Initialize the system
mbed_official 80:bdf1132a57cf 76 *
mbed_official 80:bdf1132a57cf 77 * @param none
mbed_official 80:bdf1132a57cf 78 * @return none
mbed_official 80:bdf1132a57cf 79 *
mbed_official 80:bdf1132a57cf 80 * @brief Setup the microcontroller system.
mbed_official 80:bdf1132a57cf 81 * Initialize the System.
mbed_official 80:bdf1132a57cf 82 */
mbed_official 80:bdf1132a57cf 83 void SystemInit (void)
mbed_official 80:bdf1132a57cf 84 {
mbed_official 80:bdf1132a57cf 85
mbed_official 80:bdf1132a57cf 86 #ifdef UNALIGNED_SUPPORT_DISABLE
mbed_official 80:bdf1132a57cf 87 SCB->CCR |= SCB_CCR_UNALIGN_TRP_Msk;
mbed_official 80:bdf1132a57cf 88 #endif
mbed_official 80:bdf1132a57cf 89
mbed_official 80:bdf1132a57cf 90 SystemCoreClock = __SYSTEM_CLOCK;
mbed_official 80:bdf1132a57cf 91
mbed_official 80:bdf1132a57cf 92 // Enable AHB and APB clock
mbed_official 80:bdf1132a57cf 93 CMSDK_SYSCON->AHBCLKCFG0SET = 0xF; // GPIO
mbed_official 80:bdf1132a57cf 94 CMSDK_SYSCON->APBCLKCFG0SET = 0xF9B7; // UART0, UART1, TIMER0, TIMER1, DUAL TIMER
mbed_official 80:bdf1132a57cf 95 }