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Dependents:   mbed_blinky-bmd-200 bmd-200_accel_demo firstRig

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targets/cmsis/TARGET_Silicon_Labs/TARGET_EFM32/TARGET_EFM32LG_STK3600/cmsis_nvic.c@592:5e2eb8beba71, 2015-07-10 (annotated)

Committer:
dcnichols
Date:
Fri Jul 10 17:36:27 2015 +0000
Revision:
592:5e2eb8beba71
Parent:
529:c320967f86b9 
updating to latest mbed-src

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 529:c320967f86b9 1 /* mbed Microcontroller Library - cmsis_nvic for EFM32
mbed_official 529:c320967f86b9 2 * Copyright (c) 2011 ARM Limited. All rights reserved.
mbed_official 529:c320967f86b9 3 *
mbed_official 529:c320967f86b9 4 * CMSIS-style functionality to support dynamic vectors
mbed_official 529:c320967f86b9 5 */
mbed_official 529:c320967f86b9 6 #include "cmsis_nvic.h"
mbed_official 529:c320967f86b9 7
mbed_official 529:c320967f86b9 8 #if (defined (__GNUC__) && (!defined(__CC_ARM)))
mbed_official 529:c320967f86b9 9 extern uint32_t __start_vector_table__; // Dynamic vector positioning in GCC
mbed_official 529:c320967f86b9 10 #endif
mbed_official 529:c320967f86b9 11
mbed_official 529:c320967f86b9 12 #define NVIC_RAM_VECTOR_ADDRESS (0x20000000) // Vectors positioned at start of RAM
mbed_official 529:c320967f86b9 13 #define NVIC_FLASH_VECTOR_ADDRESS (0x0) // Initial vector position in flash
mbed_official 529:c320967f86b9 14
mbed_official 529:c320967f86b9 15 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
mbed_official 529:c320967f86b9 16 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 529:c320967f86b9 17 uint32_t i;
mbed_official 529:c320967f86b9 18
mbed_official 529:c320967f86b9 19 // Copy and switch to dynamic vectors if the first time called
mbed_official 529:c320967f86b9 20 // For GCC, use dynamic vector table placement since otherwise we run into an alignment conflict
mbed_official 529:c320967f86b9 21 #if (defined (__GNUC__) && (!defined(__CC_ARM)))
mbed_official 529:c320967f86b9 22 if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
mbed_official 529:c320967f86b9 23 uint32_t *old_vectors = vectors;
mbed_official 529:c320967f86b9 24 vectors = (uint32_t*)(&__start_vector_table__);
mbed_official 529:c320967f86b9 25 for (i=0; i<NVIC_NUM_VECTORS; i++) {
mbed_official 529:c320967f86b9 26 vectors[i] = old_vectors[i];
mbed_official 529:c320967f86b9 27 }
mbed_official 529:c320967f86b9 28 SCB->VTOR = (uint32_t)(&__start_vector_table__);
mbed_official 529:c320967f86b9 29 }
mbed_official 529:c320967f86b9 30 // Other compilers don't matter as much...
mbed_official 529:c320967f86b9 31 #else
mbed_official 529:c320967f86b9 32 if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
mbed_official 529:c320967f86b9 33 uint32_t *old_vectors = vectors;
mbed_official 529:c320967f86b9 34 vectors = (uint32_t*)(NVIC_RAM_VECTOR_ADDRESS);
mbed_official 529:c320967f86b9 35 for (i=0; i<NVIC_NUM_VECTORS; i++) {
mbed_official 529:c320967f86b9 36 vectors[i] = old_vectors[i];
mbed_official 529:c320967f86b9 37 }
mbed_official 529:c320967f86b9 38 SCB->VTOR = (uint32_t)(NVIC_RAM_VECTOR_ADDRESS);
mbed_official 529:c320967f86b9 39 }
mbed_official 529:c320967f86b9 40 #endif
mbed_official 529:c320967f86b9 41 vectors[IRQn + 16] = vector;
mbed_official 529:c320967f86b9 42 }
mbed_official 529:c320967f86b9 43
mbed_official 529:c320967f86b9 44 uint32_t NVIC_GetVector(IRQn_Type IRQn) {
mbed_official 529:c320967f86b9 45 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 529:c320967f86b9 46 return vectors[IRQn + 16];
mbed_official 529:c320967f86b9 47 }