mbed library sources
Fork of mbed-src by
targets/cmsis/TARGET_STM/TARGET_NUCLEO_F030R8/cmsis_nvic.c@77:b5886236e6f0, 2014-01-27 (annotated)
- Committer:
- mbed_official
- Date:
- Mon Jan 27 15:30:04 2014 +0000
- Revision:
- 77:b5886236e6f0
- Parent:
- 76:aeb1df146756
Synchronized with git revision 84a8f2bcd4fff802c20a78cc2edf304135d243d2
Full URL: https://github.com/mbedmicro/mbed/commit/84a8f2bcd4fff802c20a78cc2edf304135d243d2/
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 76:aeb1df146756 | 1 | /* mbed Microcontroller Library |
mbed_official | 76:aeb1df146756 | 2 | * CMSIS-style functionality to support dynamic vectors |
mbed_official | 76:aeb1df146756 | 3 | ******************************************************************************* |
mbed_official | 76:aeb1df146756 | 4 | * Copyright (c) 2014, STMicroelectronics |
mbed_official | 76:aeb1df146756 | 5 | * All rights reserved. |
mbed_official | 76:aeb1df146756 | 6 | * |
mbed_official | 76:aeb1df146756 | 7 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 76:aeb1df146756 | 8 | * modification, are permitted provided that the following conditions are met: |
mbed_official | 76:aeb1df146756 | 9 | * |
mbed_official | 76:aeb1df146756 | 10 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 76:aeb1df146756 | 11 | * this list of conditions and the following disclaimer. |
mbed_official | 76:aeb1df146756 | 12 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 76:aeb1df146756 | 13 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 76:aeb1df146756 | 14 | * and/or other materials provided with the distribution. |
mbed_official | 76:aeb1df146756 | 15 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 76:aeb1df146756 | 16 | * may be used to endorse or promote products derived from this software |
mbed_official | 76:aeb1df146756 | 17 | * without specific prior written permission. |
mbed_official | 76:aeb1df146756 | 18 | * |
mbed_official | 76:aeb1df146756 | 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 76:aeb1df146756 | 20 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 76:aeb1df146756 | 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 76:aeb1df146756 | 22 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 76:aeb1df146756 | 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 76:aeb1df146756 | 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 76:aeb1df146756 | 25 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 76:aeb1df146756 | 26 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 76:aeb1df146756 | 27 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 76:aeb1df146756 | 28 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 76:aeb1df146756 | 29 | ******************************************************************************* |
mbed_official | 76:aeb1df146756 | 30 | */ |
mbed_official | 76:aeb1df146756 | 31 | #include "cmsis_nvic.h" |
mbed_official | 76:aeb1df146756 | 32 | |
mbed_official | 76:aeb1df146756 | 33 | #define NVIC_RAM_VECTOR_ADDRESS (0x20000000) // Vectors positioned at start of RAM |
mbed_official | 76:aeb1df146756 | 34 | #define NVIC_FLASH_VECTOR_ADDRESS (0x08000000) // Initial vector position in flash |
mbed_official | 76:aeb1df146756 | 35 | |
mbed_official | 76:aeb1df146756 | 36 | static unsigned char vtor_remap = 0; // To keep track that the vectors remap is done |
mbed_official | 76:aeb1df146756 | 37 | |
mbed_official | 76:aeb1df146756 | 38 | void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) { |
mbed_official | 76:aeb1df146756 | 39 | int i; |
mbed_official | 76:aeb1df146756 | 40 | // Space for dynamic vectors, initialised to allocate in R/W |
mbed_official | 77:b5886236e6f0 | 41 | static volatile uint32_t *vectors = (uint32_t *)NVIC_RAM_VECTOR_ADDRESS; |
mbed_official | 76:aeb1df146756 | 42 | |
mbed_official | 76:aeb1df146756 | 43 | // Copy and switch to dynamic vectors if first time called |
mbed_official | 76:aeb1df146756 | 44 | if (vtor_remap == 0) { |
mbed_official | 76:aeb1df146756 | 45 | uint32_t *old_vectors = (uint32_t *)NVIC_FLASH_VECTOR_ADDRESS; |
mbed_official | 76:aeb1df146756 | 46 | for (i = 0; i < NVIC_NUM_VECTORS; i++) { |
mbed_official | 76:aeb1df146756 | 47 | vectors[i] = old_vectors[i]; |
mbed_official | 76:aeb1df146756 | 48 | } |
mbed_official | 77:b5886236e6f0 | 49 | SYSCFG->CFGR1 |= 0x03; // Embedded SRAM mapped at 0x00000000 |
mbed_official | 76:aeb1df146756 | 50 | vtor_remap = 1; // The vectors remap is done |
mbed_official | 76:aeb1df146756 | 51 | } |
mbed_official | 76:aeb1df146756 | 52 | |
mbed_official | 76:aeb1df146756 | 53 | // Set the vector |
mbed_official | 76:aeb1df146756 | 54 | vectors[IRQn + 16] = vector; |
mbed_official | 76:aeb1df146756 | 55 | } |
mbed_official | 76:aeb1df146756 | 56 | |
mbed_official | 76:aeb1df146756 | 57 | uint32_t NVIC_GetVector(IRQn_Type IRQn) { |
mbed_official | 76:aeb1df146756 | 58 | uint32_t *vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS; |
mbed_official | 76:aeb1df146756 | 59 | // Return the vector |
mbed_official | 76:aeb1df146756 | 60 | return vectors[IRQn + 16]; |
mbed_official | 76:aeb1df146756 | 61 | } |