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Add nvic dynamic vector handling.

pull/8/head
Joe Turner 2013-04-19 10:11:13 +01:00
parent ed9e0c1f0f
commit d18875bee3
2 changed files with 53 additions and 0 deletions
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30
libraries/mbed/vendor/STM/cmsis/STM32F407/cmsis_nvic.c vendored
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/* mbed Microcontroller Library - cmsis_nvic for STM32F4
* Copyright (c) 2009-2011 ARM Limited. All rights reserved.
*
* CMSIS-style functionality to support dynamic vectors
*/
#include "cmsis_nvic.h"
#define NVIC_NUM_VECTORS (16 + 81) // CORE + MCU Peripherals
#define NVIC_RAM_VECTOR_ADDRESS (0x10000000) // Location of vectors in RAM
void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
static volatile uint32_t* vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
int i;
// Copy and switch to dynamic vectors if first time called
if (SCB->VTOR != NVIC_RAM_VECTOR_ADDRESS) {
uint32_t *old_vectors = (uint32_t*)SCB->VTOR;
for (i=0; i<NVIC_NUM_VECTORS; i++) {
vectors[i] = old_vectors[i];
}
SCB->VTOR = (uint32_t)vectors;
}
vectors[IRQn + 16] = vector;
}
uint32_t NVIC_GetVector(IRQn_Type IRQn) {
uint32_t *vectors = (uint32_t*)SCB->VTOR;
return vectors[IRQn + 16];
}

23
libraries/mbed/vendor/STM/cmsis/STM32F407/cmsis_nvic.h vendored
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/* mbed Microcontroller Library - cmsis_nvic
* Copyright (c) 2009-2011 ARM Limited. All rights reserved.
*
* CMSIS-style functionality to support dynamic vectors
*/
#ifndef MBED_CMSIS_NVIC_H
#define MBED_CMSIS_NVIC_H
#include "cmsis.h"
#ifdef __cplusplus
extern "C" {
#endif
void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector);
uint32_t NVIC_GetVector(IRQn_Type IRQn);
#ifdef __cplusplus
}
#endif
#endif