Jonathan Piat
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mbed-src
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vendor/NXP/LPC1768/cmsis/cmsis_nvic.c@12:5fa2273de5db, 2013-07-24 (annotated)
- Committer:
- emimon01
- Date:
- Wed Jul 24 11:11:21 2013 +0100
- Revision:
- 12:5fa2273de5db
- Parent:
- 10:3bc89ef62ce7
Remove sources for toolchains unknown by the online compiler
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| emilmont | 10:3bc89ef62ce7 | 1 | /* mbed Microcontroller Library - cmsis_nvic for LCP1768 |
| emilmont | 10:3bc89ef62ce7 | 2 | * Copyright (c) 2009-2011 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 + 33) // CORE + MCU Peripherals |
| emilmont | 10:3bc89ef62ce7 | 9 | #define NVIC_RAM_VECTOR_ADDRESS (0x10000000) // Location of vectors in 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 | // Copy and switch to dynamic vectors if first time called |
| emilmont | 10:3bc89ef62ce7 | 15 | if (SCB->VTOR != NVIC_RAM_VECTOR_ADDRESS) { |
| emilmont | 10:3bc89ef62ce7 | 16 | uint32_t *old_vectors = (uint32_t*)SCB->VTOR; |
| emilmont | 10:3bc89ef62ce7 | 17 | for (i=0; i<NVIC_NUM_VECTORS; i++) { |
| emilmont | 10:3bc89ef62ce7 | 18 | vectors[i] = old_vectors[i]; |
| emilmont | 10:3bc89ef62ce7 | 19 | } |
| emilmont | 10:3bc89ef62ce7 | 20 | SCB->VTOR = (uint32_t)vectors; |
| emilmont | 10:3bc89ef62ce7 | 21 | } |
| emilmont | 10:3bc89ef62ce7 | 22 | |
| emilmont | 10:3bc89ef62ce7 | 23 | vectors[IRQn + 16] = vector; |
| emilmont | 10:3bc89ef62ce7 | 24 | } |
| emilmont | 10:3bc89ef62ce7 | 25 | |
| emilmont | 10:3bc89ef62ce7 | 26 | uint32_t NVIC_GetVector(IRQn_Type IRQn) { |
| emilmont | 10:3bc89ef62ce7 | 27 | uint32_t *vectors = (uint32_t*)SCB->VTOR; |
| emilmont | 10:3bc89ef62ce7 | 28 | return vectors[IRQn + 16]; |
| emilmont | 10:3bc89ef62ce7 | 29 | } |
| emilmont | 10:3bc89ef62ce7 | 30 |