Ken Todotani / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_NUCLEO_F103RB/cmsis_nvic.c@52:a51c77007319, 2013-12-02 (annotated)

Committer:
mbed_official
Date:
Mon Dec 02 11:30:05 2013 +0000
Revision:
52:a51c77007319
Child:
70:c1fbde68b492
Synchronized with git revision 49df530ae72ce97ccc773d1f2c13b38e868e6abd



Full URL: https://github.com/mbedmicro/mbed/commit/49df530ae72ce97ccc773d1f2c13b38e868e6abd/



Add STMicroelectronics NUCLEO_F103RB target

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 52:a51c77007319 1 /* mbed Microcontroller Library - cmsis_nvic for LPC11U24
mbed_official 52:a51c77007319 2 * Copyright (c) 2011 ARM Limited. All rights reserved.
mbed_official 52:a51c77007319 3 *
mbed_official 52:a51c77007319 4 * CMSIS-style functionality to support dynamic vectors
mbed_official 52:a51c77007319 5 */
mbed_official 52:a51c77007319 6 #include "cmsis_nvic.h"
mbed_official 52:a51c77007319 7
mbed_official 52:a51c77007319 8 #define NVIC_RAM_VECTOR_ADDRESS (0x20000000) // Vectors positioned at start of RAM
mbed_official 52:a51c77007319 9 #define NVIC_FLASH_VECTOR_ADDRESS (0x08000000) // Initial vector position in flash
mbed_official 52:a51c77007319 10
mbed_official 52:a51c77007319 11 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
mbed_official 52:a51c77007319 12 uint32_t *vectors = (uint32_t *)SCB->VTOR;
mbed_official 52:a51c77007319 13 uint32_t i;
mbed_official 52:a51c77007319 14
mbed_official 52:a51c77007319 15 // Copy and switch to dynamic vectors if the first time called
mbed_official 52:a51c77007319 16 if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
mbed_official 52:a51c77007319 17 uint32_t *old_vectors = vectors;
mbed_official 52:a51c77007319 18 vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 52:a51c77007319 19 for (i=0; i<NVIC_NUM_VECTORS; i++) {
mbed_official 52:a51c77007319 20 vectors[i] = old_vectors[i];
mbed_official 52:a51c77007319 21 }
mbed_official 52:a51c77007319 22 SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 52:a51c77007319 23 }
mbed_official 52:a51c77007319 24 vectors[IRQn + NVIC_USER_IRQ_OFFSET] = vector;
mbed_official 52:a51c77007319 25 }
mbed_official 52:a51c77007319 26
mbed_official 52:a51c77007319 27 uint32_t NVIC_GetVector(IRQn_Type IRQn) {
mbed_official 52:a51c77007319 28 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 52:a51c77007319 29 return vectors[IRQn + NVIC_USER_IRQ_OFFSET];
mbed_official 52:a51c77007319 30 }