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_MPS2_M7/cmsis_nvic.c@144:ef7eb2e8f9f7, 2016-09-02 (annotated)

Committer:
<>
Date:
Fri Sep 02 15:07:44 2016 +0100
Revision:
144:ef7eb2e8f9f7
Parent:
0:9b334a45a8ff 
This updates the lib to the mbed lib v125

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* MPS2 CMSIS Library
<> 144:ef7eb2e8f9f7 2 *
<> 144:ef7eb2e8f9f7 3 * Copyright (c) 2006-2015 ARM Limited
<> 144:ef7eb2e8f9f7 4 * All rights reserved.
<> 144:ef7eb2e8f9f7 5 *
<> 144:ef7eb2e8f9f7 6 * Redistribution and use in source and binary forms, with or without
<> 144:ef7eb2e8f9f7 7 * modification, are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 8 *
<> 144:ef7eb2e8f9f7 9 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 10 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 11 *
<> 144:ef7eb2e8f9f7 12 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 13 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 14 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 15 *
<> 144:ef7eb2e8f9f7 16 * 3. Neither the name of the copyright holder nor the names of its contributors
<> 144:ef7eb2e8f9f7 17 * may be used to endorse or promote products derived from this software without
<> 144:ef7eb2e8f9f7 18 * specific prior written permission.
<> 144:ef7eb2e8f9f7 19 *
<> 144:ef7eb2e8f9f7 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
<> 144:ef7eb2e8f9f7 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
<> 144:ef7eb2e8f9f7 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
<> 144:ef7eb2e8f9f7 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
<> 144:ef7eb2e8f9f7 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
<> 144:ef7eb2e8f9f7 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
<> 144:ef7eb2e8f9f7 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
<> 144:ef7eb2e8f9f7 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
<> 144:ef7eb2e8f9f7 30 * POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 31 *******************************************************************************
<> 144:ef7eb2e8f9f7 32 * CMSIS-style functionality to support dynamic vectors
<> 144:ef7eb2e8f9f7 33 *******************************************************************************/
<> 144:ef7eb2e8f9f7 34 #include "cmsis_nvic.h"
<> 144:ef7eb2e8f9f7 35
<> 144:ef7eb2e8f9f7 36 #define NVIC_RAM_VECTOR_ADDRESS (0x20000000) // Location of vectors in RAM
<> 144:ef7eb2e8f9f7 37 #define NVIC_FLASH_VECTOR_ADDRESS (0x00000000) // Initial vector position in flash
<> 144:ef7eb2e8f9f7 38
<> 144:ef7eb2e8f9f7 39 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
<> 144:ef7eb2e8f9f7 40 uint32_t *vectors = (uint32_t*)SCB->VTOR;
<> 144:ef7eb2e8f9f7 41 uint32_t i;
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 // Copy and switch to dynamic vectors if the first time called
<> 144:ef7eb2e8f9f7 44 if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
<> 144:ef7eb2e8f9f7 45 uint32_t *old_vectors = vectors;
<> 144:ef7eb2e8f9f7 46 vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
<> 144:ef7eb2e8f9f7 47 for (i=0; i<NVIC_NUM_VECTORS; i++) {
<> 144:ef7eb2e8f9f7 48 vectors[i] = old_vectors[i];
<> 144:ef7eb2e8f9f7 49 }
<> 144:ef7eb2e8f9f7 50 SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
<> 144:ef7eb2e8f9f7 51 }
<> 144:ef7eb2e8f9f7 52 vectors[IRQn + NVIC_USER_IRQ_OFFSET] = vector;
<> 144:ef7eb2e8f9f7 53 }
<> 144:ef7eb2e8f9f7 54
<> 144:ef7eb2e8f9f7 55 uint32_t NVIC_GetVector(IRQn_Type IRQn) {
<> 144:ef7eb2e8f9f7 56 uint32_t *vectors = (uint32_t*)SCB->VTOR;
<> 144:ef7eb2e8f9f7 57 return vectors[IRQn + NVIC_USER_IRQ_OFFSET];
<> 144:ef7eb2e8f9f7 58 }