shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/cmsis/TARGET_Freescale/TARGET_KLXX/TARGET_KL05Z/cmsis_nvic.c@82:0b31dbcd4769, 2014-01-31 (annotated)

Committer:
mbed_official
Date:
Fri Jan 31 10:00:06 2014 +0000
Revision:
82:0b31dbcd4769
Synchronized with git revision 74409cbd593d1daab530a57baaa563f30b04b018



Full URL: https://github.com/mbedmicro/mbed/commit/74409cbd593d1daab530a57baaa563f30b04b018/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 82:0b31dbcd4769 1 /* mbed Microcontroller Library - cmsis_nvic for KL05Z
mbed_official 82:0b31dbcd4769 2 * Copyright (c) 2011 ARM Limited. All rights reserved.
mbed_official 82:0b31dbcd4769 3 *
mbed_official 82:0b31dbcd4769 4 * CMSIS-style functionality to support dynamic vectors
mbed_official 82:0b31dbcd4769 5 */
mbed_official 82:0b31dbcd4769 6 #include "cmsis_nvic.h"
mbed_official 82:0b31dbcd4769 7
mbed_official 82:0b31dbcd4769 8 #define NVIC_RAM_VECTOR_ADDRESS (0x1FFFFC00) // Vectors positioned at start of RAM
mbed_official 82:0b31dbcd4769 9 #define NVIC_FLASH_VECTOR_ADDRESS (0x0) // Initial vector position in flash
mbed_official 82:0b31dbcd4769 10
mbed_official 82:0b31dbcd4769 11 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
mbed_official 82:0b31dbcd4769 12 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 82:0b31dbcd4769 13 uint32_t i;
mbed_official 82:0b31dbcd4769 14
mbed_official 82:0b31dbcd4769 15 // Copy and switch to dynamic vectors if the first time called
mbed_official 82:0b31dbcd4769 16 if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
mbed_official 82:0b31dbcd4769 17 uint32_t *old_vectors = vectors;
mbed_official 82:0b31dbcd4769 18 vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 82:0b31dbcd4769 19 for (i=0; i<NVIC_NUM_VECTORS; i++) {
mbed_official 82:0b31dbcd4769 20 vectors[i] = old_vectors[i];
mbed_official 82:0b31dbcd4769 21 }
mbed_official 82:0b31dbcd4769 22 SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 82:0b31dbcd4769 23 }
mbed_official 82:0b31dbcd4769 24 vectors[IRQn + 16] = vector;
mbed_official 82:0b31dbcd4769 25 }
mbed_official 82:0b31dbcd4769 26
mbed_official 82:0b31dbcd4769 27 uint32_t NVIC_GetVector(IRQn_Type IRQn) {
mbed_official 82:0b31dbcd4769 28 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 82:0b31dbcd4769 29 return vectors[IRQn + 16];
mbed_official 82:0b31dbcd4769 30 }