mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/cmsis/TARGET_NXP/TARGET_LPC15XX/cmsis_nvic.c
- Committer:
- mbed_official
- Date:
- 2014-02-20
- Revision:
- 103:9b881da47c92
File content as of revision 103:9b881da47c92:
/* mbed Microcontroller Library - cmsis_nvic for LPC11U24 * Copyright (c) 2011 ARM Limited. All rights reserved. * * CMSIS-style functionality to support dynamic vectors */ #include "cmsis_nvic.h" #define NVIC_RAM_VECTOR_ADDRESS (0x02000000) // Vectors positioned at start of RAM #define NVIC_FLASH_VECTOR_ADDRESS (0x0) // Initial vector position in flash void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) { uint32_t *vectors = (uint32_t*)SCB->VTOR; uint32_t i; // Copy and switch to dynamic vectors if the first time called if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) { uint32_t *old_vectors = vectors; vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS; for (i=0; i<NVIC_NUM_VECTORS; i++) { vectors[i] = old_vectors[i]; } SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS; } vectors[IRQn + 16] = vector; } uint32_t NVIC_GetVector(IRQn_Type IRQn) { uint32_t *vectors = (uint32_t*)SCB->VTOR; return vectors[IRQn + 16]; }