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Last commit 20 Feb 2019 by 
mbed official
vendor/NXP/LPC812/cmsis/cmsis_nvic.c@10:3bc89ef62ce7, 2013-06-14 (annotated)
- Committer:
- emilmont
- Date:
- Fri Jun 14 17:49:17 2013 +0100
- Revision:
- 10:3bc89ef62ce7
Unify mbed library sources
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| emilmont | 10:3bc89ef62ce7 | 1 | /* mbed Microcontroller Library - cmsis_nvic for LPC11U24 |
| emilmont | 10:3bc89ef62ce7 | 2 | * Copyright (c) 2011 ARM Limited. All rights reserved. |
| emilmont | 10:3bc89ef62ce7 | 3 | * |
| emilmont | 10:3bc89ef62ce7 | 4 | * CMSIS-style functionality to support dynamic vectors |
| emilmont | 10:3bc89ef62ce7 | 5 | */ |
| emilmont | 10:3bc89ef62ce7 | 6 | #include "cmsis_nvic.h" |
| emilmont | 10:3bc89ef62ce7 | 7 | |
| emilmont | 10:3bc89ef62ce7 | 8 | #define NVIC_NUM_VECTORS (16 + 32) // CORE + MCU Peripherals |
| emilmont | 10:3bc89ef62ce7 | 9 | #define NVIC_RAM_VECTOR_ADDRESS (0x10000000) // Vectors positioned at start of RAM |
| emilmont | 10:3bc89ef62ce7 | 10 | |
| emilmont | 10:3bc89ef62ce7 | 11 | void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) { |
| emilmont | 10:3bc89ef62ce7 | 12 | static volatile uint32_t* vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS; |
| emilmont | 10:3bc89ef62ce7 | 13 | int i; |
| emilmont | 10:3bc89ef62ce7 | 14 | |
| emilmont | 10:3bc89ef62ce7 | 15 | // Copy and switch to dynamic vectors if first time called |
| emilmont | 10:3bc89ef62ce7 | 16 | if (SCB->VTOR != NVIC_RAM_VECTOR_ADDRESS) { |
| emilmont | 10:3bc89ef62ce7 | 17 | uint32_t *old_vectors = (uint32_t*)SCB->VTOR; |
| emilmont | 10:3bc89ef62ce7 | 18 | for (i=0; i<NVIC_NUM_VECTORS; i++) { |
| emilmont | 10:3bc89ef62ce7 | 19 | vectors[i] = old_vectors[i]; |
| emilmont | 10:3bc89ef62ce7 | 20 | } |
| emilmont | 10:3bc89ef62ce7 | 21 | SCB->VTOR = (uint32_t)vectors; |
| emilmont | 10:3bc89ef62ce7 | 22 | } |
| emilmont | 10:3bc89ef62ce7 | 23 | |
| emilmont | 10:3bc89ef62ce7 | 24 | vectors[IRQn + 16] = vector; |
| emilmont | 10:3bc89ef62ce7 | 25 | } |
| emilmont | 10:3bc89ef62ce7 | 26 | |
| emilmont | 10:3bc89ef62ce7 | 27 | uint32_t NVIC_GetVector(IRQn_Type IRQn) { |
| emilmont | 10:3bc89ef62ce7 | 28 | uint32_t *vectors = (uint32_t*)SCB->VTOR; |
| emilmont | 10:3bc89ef62ce7 | 29 | return vectors[IRQn + 16]; |
| emilmont | 10:3bc89ef62ce7 | 30 | } |
