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This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32L4/TARGET_DISCO_L476VG/cmsis_nvic.c@610:813dcc80987e, 2015-08-14 (annotated)

Committer:
mbed_official
Date:
Fri Aug 14 13:15:17 2015 +0100
Revision:
610:813dcc80987e
Synchronized with git revision 6d84db41c6833e0b9b024741eb0616a5f62d5599



Full URL: https://github.com/mbedmicro/mbed/commit/6d84db41c6833e0b9b024741eb0616a5f62d5599/



DISCO_F746NG - Improvements

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 610:813dcc80987e 1 /* mbed Microcontroller Library
mbed_official 610:813dcc80987e 2 * CMSIS-style functionality to support dynamic vectors
mbed_official 610:813dcc80987e 3 *******************************************************************************
mbed_official 610:813dcc80987e 4 * Copyright (c) 2015, STMicroelectronics
mbed_official 610:813dcc80987e 5 * All rights reserved.
mbed_official 610:813dcc80987e 6 *
mbed_official 610:813dcc80987e 7 * Redistribution and use in source and binary forms, with or without
mbed_official 610:813dcc80987e 8 * modification, are permitted provided that the following conditions are met:
mbed_official 610:813dcc80987e 9 *
mbed_official 610:813dcc80987e 10 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 610:813dcc80987e 11 * this list of conditions and the following disclaimer.
mbed_official 610:813dcc80987e 12 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 610:813dcc80987e 13 * this list of conditions and the following disclaimer in the documentation
mbed_official 610:813dcc80987e 14 * and/or other materials provided with the distribution.
mbed_official 610:813dcc80987e 15 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 610:813dcc80987e 16 * may be used to endorse or promote products derived from this software
mbed_official 610:813dcc80987e 17 * without specific prior written permission.
mbed_official 610:813dcc80987e 18 *
mbed_official 610:813dcc80987e 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 610:813dcc80987e 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 610:813dcc80987e 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 610:813dcc80987e 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 610:813dcc80987e 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 610:813dcc80987e 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 610:813dcc80987e 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 610:813dcc80987e 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 610:813dcc80987e 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 610:813dcc80987e 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 610:813dcc80987e 29 *******************************************************************************
mbed_official 610:813dcc80987e 30 */
mbed_official 610:813dcc80987e 31 #include "cmsis_nvic.h"
mbed_official 610:813dcc80987e 32
mbed_official 610:813dcc80987e 33 #define NVIC_RAM_VECTOR_ADDRESS (0x20000000) // Vectors positioned at start of RAM
mbed_official 610:813dcc80987e 34 #define NVIC_FLASH_VECTOR_ADDRESS (0x08000000) // Initial vector position in flash
mbed_official 610:813dcc80987e 35
mbed_official 610:813dcc80987e 36 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
mbed_official 610:813dcc80987e 37 uint32_t *vectors = (uint32_t *)SCB->VTOR;
mbed_official 610:813dcc80987e 38 uint32_t i;
mbed_official 610:813dcc80987e 39
mbed_official 610:813dcc80987e 40 // Copy and switch to dynamic vectors if the first time called
mbed_official 610:813dcc80987e 41 if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
mbed_official 610:813dcc80987e 42 uint32_t *old_vectors = vectors;
mbed_official 610:813dcc80987e 43 vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 610:813dcc80987e 44 for (i=0; i<NVIC_NUM_VECTORS; i++) {
mbed_official 610:813dcc80987e 45 vectors[i] = old_vectors[i];
mbed_official 610:813dcc80987e 46 }
mbed_official 610:813dcc80987e 47 SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 610:813dcc80987e 48 }
mbed_official 610:813dcc80987e 49 vectors[IRQn + NVIC_USER_IRQ_OFFSET] = vector;
mbed_official 610:813dcc80987e 50 }
mbed_official 610:813dcc80987e 51
mbed_official 610:813dcc80987e 52 uint32_t NVIC_GetVector(IRQn_Type IRQn) {
mbed_official 610:813dcc80987e 53 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 610:813dcc80987e 54 return vectors[IRQn + NVIC_USER_IRQ_OFFSET];
mbed_official 610:813dcc80987e 55 }