Joris Aerts / mbed-src

mbed library sources

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targets/cmsis/TARGET_STM/TARGET_STM32F3XX/cmsis_nvic.c@637:ed69428d4850, 2015-12-22 (annotated)

Committer:
jaerts
Date:
Tue Dec 22 13:22:16 2015 +0000
Revision:
637:ed69428d4850
Parent:
155:8435094ec241 
Add very shady LPC1768 CAN Filter implementation

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 155:8435094ec241 1 /* mbed Microcontroller Library
mbed_official 155:8435094ec241 2 * CMSIS-style functionality to support dynamic vectors
mbed_official 155:8435094ec241 3 *******************************************************************************
mbed_official 155:8435094ec241 4 * Copyright (c) 2014, STMicroelectronics
mbed_official 155:8435094ec241 5 * All rights reserved.
mbed_official 155:8435094ec241 6 *
mbed_official 155:8435094ec241 7 * Redistribution and use in source and binary forms, with or without
mbed_official 155:8435094ec241 8 * modification, are permitted provided that the following conditions are met:
mbed_official 155:8435094ec241 9 *
mbed_official 155:8435094ec241 10 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 155:8435094ec241 11 * this list of conditions and the following disclaimer.
mbed_official 155:8435094ec241 12 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 155:8435094ec241 13 * this list of conditions and the following disclaimer in the documentation
mbed_official 155:8435094ec241 14 * and/or other materials provided with the distribution.
mbed_official 155:8435094ec241 15 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 155:8435094ec241 16 * may be used to endorse or promote products derived from this software
mbed_official 155:8435094ec241 17 * without specific prior written permission.
mbed_official 155:8435094ec241 18 *
mbed_official 155:8435094ec241 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 155:8435094ec241 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 155:8435094ec241 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 155:8435094ec241 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 155:8435094ec241 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 155:8435094ec241 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 155:8435094ec241 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 155:8435094ec241 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 155:8435094ec241 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 155:8435094ec241 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 155:8435094ec241 29 *******************************************************************************
mbed_official 155:8435094ec241 30 */
mbed_official 155:8435094ec241 31 #include "cmsis_nvic.h"
mbed_official 155:8435094ec241 32
mbed_official 155:8435094ec241 33 #define NVIC_RAM_VECTOR_ADDRESS (0x20000000) // Vectors positioned at start of RAM
mbed_official 155:8435094ec241 34 #define NVIC_FLASH_VECTOR_ADDRESS (0x08000000) // Initial vector position in flash
mbed_official 155:8435094ec241 35
mbed_official 155:8435094ec241 36 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
mbed_official 155:8435094ec241 37 uint32_t *vectors = (uint32_t *)SCB->VTOR;
mbed_official 155:8435094ec241 38 uint32_t i;
mbed_official 155:8435094ec241 39
mbed_official 155:8435094ec241 40 // Copy and switch to dynamic vectors if the first time called
mbed_official 155:8435094ec241 41 if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
mbed_official 155:8435094ec241 42 uint32_t *old_vectors = vectors;
mbed_official 155:8435094ec241 43 vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 155:8435094ec241 44 for (i=0; i<NVIC_NUM_VECTORS; i++) {
mbed_official 155:8435094ec241 45 vectors[i] = old_vectors[i];
mbed_official 155:8435094ec241 46 }
mbed_official 155:8435094ec241 47 SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 155:8435094ec241 48 }
mbed_official 155:8435094ec241 49 vectors[IRQn + NVIC_USER_IRQ_OFFSET] = vector;
mbed_official 155:8435094ec241 50 }
mbed_official 155:8435094ec241 51
mbed_official 155:8435094ec241 52 uint32_t NVIC_GetVector(IRQn_Type IRQn) {
mbed_official 155:8435094ec241 53 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 155:8435094ec241 54 return vectors[IRQn + NVIC_USER_IRQ_OFFSET];
mbed_official 155:8435094ec241 55 }