SDK Development / mbed-src

mbed SDK library sources

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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.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

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_STM32F4XX/cmsis_nvic.c@39:6f0d2ff04ac3, 2013-10-25 (annotated)

Committer:
mbed_official
Date:
Fri Oct 25 13:30:04 2013 +0100
Revision:
39:6f0d2ff04ac3
Parent:
20:4263a77256ae 
Synchronized with git revision 7a15854fb8d9be2511f9147b578e93525f1a3f1a

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 20:4263a77256ae 1 /* mbed Microcontroller Library - cmsis_nvic for STM32F4
bogdanm 20:4263a77256ae 2 * Copyright (c) 2009-2011 ARM Limited. All rights reserved.
bogdanm 20:4263a77256ae 3 *
bogdanm 20:4263a77256ae 4 * CMSIS-style functionality to support dynamic vectors
bogdanm 20:4263a77256ae 5 */
bogdanm 20:4263a77256ae 6 #include "cmsis_nvic.h"
bogdanm 20:4263a77256ae 7
bogdanm 20:4263a77256ae 8 #define NVIC_RAM_VECTOR_ADDRESS (0x20000000) // Location of vectors in RAM
mbed_official 39:6f0d2ff04ac3 9
mbed_official 39:6f0d2ff04ac3 10 static unsigned char vtor_relocated;
bogdanm 20:4263a77256ae 11
bogdanm 20:4263a77256ae 12 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
bogdanm 20:4263a77256ae 13 uint32_t *vectors = (uint32_t*)SCB->VTOR;
bogdanm 20:4263a77256ae 14 uint32_t i;
bogdanm 20:4263a77256ae 15
bogdanm 20:4263a77256ae 16 // Copy and switch to dynamic vectors if the first time called
mbed_official 39:6f0d2ff04ac3 17 if (!vtor_relocated) {
bogdanm 20:4263a77256ae 18 uint32_t *old_vectors = vectors;
bogdanm 20:4263a77256ae 19 vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
bogdanm 20:4263a77256ae 20 for (i=0; i<NVIC_NUM_VECTORS; i++) {
bogdanm 20:4263a77256ae 21 vectors[i] = old_vectors[i];
bogdanm 20:4263a77256ae 22 }
bogdanm 20:4263a77256ae 23 SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 39:6f0d2ff04ac3 24 vtor_relocated = 1;
bogdanm 20:4263a77256ae 25 }
bogdanm 20:4263a77256ae 26 vectors[IRQn + 16] = vector;
bogdanm 20:4263a77256ae 27 }
bogdanm 20:4263a77256ae 28
bogdanm 20:4263a77256ae 29 uint32_t NVIC_GetVector(IRQn_Type IRQn) {
bogdanm 20:4263a77256ae 30 uint32_t *vectors = (uint32_t*)SCB->VTOR;
bogdanm 20:4263a77256ae 31 return vectors[IRQn + 16];
bogdanm 20:4263a77256ae 32 }
bogdanm 20:4263a77256ae 33