PHung Tung / SRC_STM32F7

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Dependents:   WAV

targets/cmsis/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F746NG/cmsis_nvic.c@0:e87aa4c49e95, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 21:51:46 2019 +0000
Revision:
0:e87aa4c49e95
libray

Who changed what in which revision?

UserRevisionLine numberNew contents of line
phungductung 0:e87aa4c49e95 1 /* mbed Microcontroller Library
phungductung 0:e87aa4c49e95 2 * CMSIS-style functionality to support dynamic vectors
phungductung 0:e87aa4c49e95 3 *******************************************************************************
phungductung 0:e87aa4c49e95 4 * Copyright (c) 2016, STMicroelectronics
phungductung 0:e87aa4c49e95 5 * All rights reserved.
phungductung 0:e87aa4c49e95 6 *
phungductung 0:e87aa4c49e95 7 * Redistribution and use in source and binary forms, with or without
phungductung 0:e87aa4c49e95 8 * modification, are permitted provided that the following conditions are met:
phungductung 0:e87aa4c49e95 9 *
phungductung 0:e87aa4c49e95 10 * 1. Redistributions of source code must retain the above copyright notice,
phungductung 0:e87aa4c49e95 11 * this list of conditions and the following disclaimer.
phungductung 0:e87aa4c49e95 12 * 2. Redistributions in binary form must reproduce the above copyright notice,
phungductung 0:e87aa4c49e95 13 * this list of conditions and the following disclaimer in the documentation
phungductung 0:e87aa4c49e95 14 * and/or other materials provided with the distribution.
phungductung 0:e87aa4c49e95 15 * 3. Neither the name of STMicroelectronics nor the names of its contributors
phungductung 0:e87aa4c49e95 16 * may be used to endorse or promote products derived from this software
phungductung 0:e87aa4c49e95 17 * without specific prior written permission.
phungductung 0:e87aa4c49e95 18 *
phungductung 0:e87aa4c49e95 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
phungductung 0:e87aa4c49e95 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
phungductung 0:e87aa4c49e95 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
phungductung 0:e87aa4c49e95 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
phungductung 0:e87aa4c49e95 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
phungductung 0:e87aa4c49e95 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
phungductung 0:e87aa4c49e95 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
phungductung 0:e87aa4c49e95 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
phungductung 0:e87aa4c49e95 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
phungductung 0:e87aa4c49e95 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
phungductung 0:e87aa4c49e95 29 *******************************************************************************
phungductung 0:e87aa4c49e95 30 */
phungductung 0:e87aa4c49e95 31 #include "cmsis_nvic.h"
phungductung 0:e87aa4c49e95 32
phungductung 0:e87aa4c49e95 33 #define NVIC_RAM_VECTOR_ADDRESS (0x20000000) // Vectors positioned at start of RAM
phungductung 0:e87aa4c49e95 34 #define NVIC_FLASH_VECTOR_ADDRESS (0x08000000) // Initial vector position in flash
phungductung 0:e87aa4c49e95 35
phungductung 0:e87aa4c49e95 36 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
phungductung 0:e87aa4c49e95 37 uint32_t *vectors = (uint32_t *)SCB->VTOR;
phungductung 0:e87aa4c49e95 38 uint32_t i;
phungductung 0:e87aa4c49e95 39
phungductung 0:e87aa4c49e95 40 // Copy and switch to dynamic vectors if the first time called
phungductung 0:e87aa4c49e95 41 if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
phungductung 0:e87aa4c49e95 42 uint32_t *old_vectors = vectors;
phungductung 0:e87aa4c49e95 43 vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
phungductung 0:e87aa4c49e95 44 for (i=0; i<NVIC_NUM_VECTORS; i++) {
phungductung 0:e87aa4c49e95 45 vectors[i] = old_vectors[i];
phungductung 0:e87aa4c49e95 46 }
phungductung 0:e87aa4c49e95 47 SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
phungductung 0:e87aa4c49e95 48 }
phungductung 0:e87aa4c49e95 49 vectors[IRQn + NVIC_USER_IRQ_OFFSET] = vector;
phungductung 0:e87aa4c49e95 50 }
phungductung 0:e87aa4c49e95 51
phungductung 0:e87aa4c49e95 52 uint32_t NVIC_GetVector(IRQn_Type IRQn) {
phungductung 0:e87aa4c49e95 53 uint32_t *vectors = (uint32_t*)SCB->VTOR;
phungductung 0:e87aa4c49e95 54 return vectors[IRQn + NVIC_USER_IRQ_OFFSET];
phungductung 0:e87aa4c49e95 55 }