Bei Chen Liu / mbed-src

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targets/cmsis/TARGET_NXP/TARGET_LPC15XX/cmsis_nvic.c@103:9b881da47c92, 2014-02-20 (annotated)

Committer:
mbed_official
Date:
Thu Feb 20 23:00:08 2014 +0000
Revision:
103:9b881da47c92
Child:
358:9d7ef901f004
Synchronized with git revision 1f2da5f6047218c8c45334c11bdaaaeab3c18841



Full URL: https://github.com/mbedmicro/mbed/commit/1f2da5f6047218c8c45334c11bdaaaeab3c18841/



NXP master merge

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 103:9b881da47c92 1 /* mbed Microcontroller Library - cmsis_nvic for LPC11U24
mbed_official 103:9b881da47c92 2 * Copyright (c) 2011 ARM Limited. All rights reserved.
mbed_official 103:9b881da47c92 3 *
mbed_official 103:9b881da47c92 4 * CMSIS-style functionality to support dynamic vectors
mbed_official 103:9b881da47c92 5 */
mbed_official 103:9b881da47c92 6 #include "cmsis_nvic.h"
mbed_official 103:9b881da47c92 7
mbed_official 103:9b881da47c92 8 #define NVIC_RAM_VECTOR_ADDRESS (0x02000000) // Vectors positioned at start of RAM
mbed_official 103:9b881da47c92 9 #define NVIC_FLASH_VECTOR_ADDRESS (0x0) // Initial vector position in flash
mbed_official 103:9b881da47c92 10
mbed_official 103:9b881da47c92 11 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
mbed_official 103:9b881da47c92 12 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 103:9b881da47c92 13 uint32_t i;
mbed_official 103:9b881da47c92 14
mbed_official 103:9b881da47c92 15 // Copy and switch to dynamic vectors if the first time called
mbed_official 103:9b881da47c92 16 if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
mbed_official 103:9b881da47c92 17 uint32_t *old_vectors = vectors;
mbed_official 103:9b881da47c92 18 vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 103:9b881da47c92 19 for (i=0; i<NVIC_NUM_VECTORS; i++) {
mbed_official 103:9b881da47c92 20 vectors[i] = old_vectors[i];
mbed_official 103:9b881da47c92 21 }
mbed_official 103:9b881da47c92 22 SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 103:9b881da47c92 23 }
mbed_official 103:9b881da47c92 24 vectors[IRQn + 16] = vector;
mbed_official 103:9b881da47c92 25 }
mbed_official 103:9b881da47c92 26
mbed_official 103:9b881da47c92 27 uint32_t NVIC_GetVector(IRQn_Type IRQn) {
mbed_official 103:9b881da47c92 28 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 103:9b881da47c92 29 return vectors[IRQn + 16];
mbed_official 103:9b881da47c92 30 }