Fawwaz Nadzmy / mbed-STM

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

targets/TARGET_Atmel/TARGET_SAM_CortexM0P/TARGET_SAMR21/device/cmsis_nvic.c@149:156823d33999, 2016-10-28 (annotated)

Committer:
<>
Date:
Fri Oct 28 11:17:30 2016 +0100
Revision:
149:156823d33999
Parent:
targets/cmsis/TARGET_Atmel/TARGET_SAM_CortexM0P/TARGET_SAML21/cmsis_nvic.c@18:da299f395b9e 
This updates the lib to the mbed lib v128



NOTE: This release includes a restructuring of the file and directory locations and thus some

include paths in your code may need updating accordingly.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 18:da299f395b9e 1 /* mbed Microcontroller Library
mbed_official 18:da299f395b9e 2 * CMSIS-style functionality to support dynamic vectors
mbed_official 18:da299f395b9e 3 *******************************************************************************
mbed_official 18:da299f395b9e 4 * Copyright (c) 2011 ARM Limited. All rights reserved.
mbed_official 18:da299f395b9e 5 * All rights reserved.
mbed_official 18:da299f395b9e 6 *
mbed_official 18:da299f395b9e 7 * Redistribution and use in source and binary forms, with or without
mbed_official 18:da299f395b9e 8 * modification, are permitted provided that the following conditions are met:
mbed_official 18:da299f395b9e 9 *
mbed_official 18:da299f395b9e 10 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 18:da299f395b9e 11 * this list of conditions and the following disclaimer.
mbed_official 18:da299f395b9e 12 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 18:da299f395b9e 13 * this list of conditions and the following disclaimer in the documentation
mbed_official 18:da299f395b9e 14 * and/or other materials provided with the distribution.
mbed_official 18:da299f395b9e 15 * 3. Neither the name of ARM Limited nor the names of its contributors
mbed_official 18:da299f395b9e 16 * may be used to endorse or promote products derived from this software
mbed_official 18:da299f395b9e 17 * without specific prior written permission.
mbed_official 18:da299f395b9e 18 *
mbed_official 18:da299f395b9e 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 18:da299f395b9e 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 18:da299f395b9e 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 18:da299f395b9e 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 18:da299f395b9e 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 18:da299f395b9e 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 18:da299f395b9e 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 18:da299f395b9e 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 18:da299f395b9e 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 18:da299f395b9e 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 18:da299f395b9e 29 *******************************************************************************
mbed_official 18:da299f395b9e 30 */
mbed_official 18:da299f395b9e 31 #include "cmsis_nvic.h"
mbed_official 18:da299f395b9e 32
mbed_official 18:da299f395b9e 33 #define NVIC_RAM_VECTOR_ADDRESS (0x20000000) // Vectors positioned at start of RAM
mbed_official 18:da299f395b9e 34 //extern uint32_t _sdvectors;
mbed_official 18:da299f395b9e 35 #define NVIC_FLASH_VECTOR_ADDRESS (0x0) // Initial vector position in flash
mbed_official 18:da299f395b9e 36
mbed_official 18:da299f395b9e 37 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector)
mbed_official 18:da299f395b9e 38 {
mbed_official 18:da299f395b9e 39 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 18:da299f395b9e 40 uint32_t i;
mbed_official 18:da299f395b9e 41
mbed_official 18:da299f395b9e 42 // Copy and switch to dynamic vectors if the first time called
mbed_official 18:da299f395b9e 43 if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
mbed_official 18:da299f395b9e 44 uint32_t *old_vectors = vectors;
mbed_official 18:da299f395b9e 45 vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 18:da299f395b9e 46 for (i=0; i<NVIC_NUM_VECTORS; i++) {
mbed_official 18:da299f395b9e 47 vectors[i] = old_vectors[i];
mbed_official 18:da299f395b9e 48 }
mbed_official 18:da299f395b9e 49 SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 18:da299f395b9e 50 }
mbed_official 18:da299f395b9e 51 vectors[IRQn + 16] = vector;
mbed_official 18:da299f395b9e 52 }
mbed_official 18:da299f395b9e 53
mbed_official 18:da299f395b9e 54 uint32_t NVIC_GetVector(IRQn_Type IRQn)
mbed_official 18:da299f395b9e 55 {
mbed_official 18:da299f395b9e 56 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 18:da299f395b9e 57 return vectors[IRQn + 16];
mbed_official 18:da299f395b9e 58 }