mbed library sources
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targets/cmsis/TARGET_Atmel/TARGET_SAM21/TARGET_SAMD21J18A/cmsis_nvic.c@579:53297373a894, 2015-07-01 (annotated)
- Committer:
- mbed_official
- Date:
- Wed Jul 01 09:45:11 2015 +0100
- Revision:
- 579:53297373a894
Synchronized with git revision d5b4d2ab9c47edb4dc5776e7177b0c2263459081
Full URL: https://github.com/mbedmicro/mbed/commit/d5b4d2ab9c47edb4dc5776e7177b0c2263459081/
Initial version of drivers for SAMR21
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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mbed_official | 579:53297373a894 | 1 | /* mbed Microcontroller Library |
mbed_official | 579:53297373a894 | 2 | * CMSIS-style functionality to support dynamic vectors |
mbed_official | 579:53297373a894 | 3 | ******************************************************************************* |
mbed_official | 579:53297373a894 | 4 | * Copyright (c) 2011 ARM Limited. All rights reserved. |
mbed_official | 579:53297373a894 | 5 | * All rights reserved. |
mbed_official | 579:53297373a894 | 6 | * |
mbed_official | 579:53297373a894 | 7 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 579:53297373a894 | 8 | * modification, are permitted provided that the following conditions are met: |
mbed_official | 579:53297373a894 | 9 | * |
mbed_official | 579:53297373a894 | 10 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 579:53297373a894 | 11 | * this list of conditions and the following disclaimer. |
mbed_official | 579:53297373a894 | 12 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 579:53297373a894 | 13 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 579:53297373a894 | 14 | * and/or other materials provided with the distribution. |
mbed_official | 579:53297373a894 | 15 | * 3. Neither the name of ARM Limited nor the names of its contributors |
mbed_official | 579:53297373a894 | 16 | * may be used to endorse or promote products derived from this software |
mbed_official | 579:53297373a894 | 17 | * without specific prior written permission. |
mbed_official | 579:53297373a894 | 18 | * |
mbed_official | 579:53297373a894 | 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 579:53297373a894 | 20 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 579:53297373a894 | 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 579:53297373a894 | 22 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 579:53297373a894 | 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 579:53297373a894 | 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 579:53297373a894 | 25 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 579:53297373a894 | 26 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 579:53297373a894 | 27 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 579:53297373a894 | 28 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 579:53297373a894 | 29 | ******************************************************************************* |
mbed_official | 579:53297373a894 | 30 | */ |
mbed_official | 579:53297373a894 | 31 | #include "cmsis_nvic.h" |
mbed_official | 579:53297373a894 | 32 | |
mbed_official | 579:53297373a894 | 33 | #define NVIC_RAM_VECTOR_ADDRESS (0x20000000) // Vectors positioned at start of RAM |
mbed_official | 579:53297373a894 | 34 | #define NVIC_FLASH_VECTOR_ADDRESS (0x0) // Initial vector position in flash |
mbed_official | 579:53297373a894 | 35 | |
mbed_official | 579:53297373a894 | 36 | void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) |
mbed_official | 579:53297373a894 | 37 | { |
mbed_official | 579:53297373a894 | 38 | uint32_t *vectors = (uint32_t*)SCB->VTOR; |
mbed_official | 579:53297373a894 | 39 | uint32_t i; |
mbed_official | 579:53297373a894 | 40 | |
mbed_official | 579:53297373a894 | 41 | // Copy and switch to dynamic vectors if the first time called |
mbed_official | 579:53297373a894 | 42 | if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) { |
mbed_official | 579:53297373a894 | 43 | uint32_t *old_vectors = vectors; |
mbed_official | 579:53297373a894 | 44 | vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS; |
mbed_official | 579:53297373a894 | 45 | for (i=0; i<NVIC_NUM_VECTORS; i++) { |
mbed_official | 579:53297373a894 | 46 | vectors[i] = old_vectors[i]; |
mbed_official | 579:53297373a894 | 47 | } |
mbed_official | 579:53297373a894 | 48 | SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS; |
mbed_official | 579:53297373a894 | 49 | } |
mbed_official | 579:53297373a894 | 50 | vectors[IRQn + 16] = vector; |
mbed_official | 579:53297373a894 | 51 | } |
mbed_official | 579:53297373a894 | 52 | |
mbed_official | 579:53297373a894 | 53 | uint32_t NVIC_GetVector(IRQn_Type IRQn) |
mbed_official | 579:53297373a894 | 54 | { |
mbed_official | 579:53297373a894 | 55 | uint32_t *vectors = (uint32_t*)SCB->VTOR; |
mbed_official | 579:53297373a894 | 56 | return vectors[IRQn + 16]; |
mbed_official | 579:53297373a894 | 57 | } |