long dao / mbed-src

Mbed for VNG board

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F0/TARGET_NUCLEO_F072RB/cmsis_nvic.c@431:255afbe6270c, 2014-12-09 (annotated)

Committer:
mbed_official
Date:
Tue Dec 09 14:45:08 2014 +0000
Revision:
431:255afbe6270c
Parent:
392:2b59412bb664 
Synchronized with git revision ea49132428ba76f828a3398a05088186c036de90



Full URL: https://github.com/mbedmicro/mbed/commit/ea49132428ba76f828a3398a05088186c036de90/



Fix IAR serial fgets fgetc



Taken from PR #770:

setbuf(_file, NULL), and std::setvbuf(_file,NULL,_IONBF,NULL) should both give an unbuffered stream (the data is directly written to the input buffer). IAR sets a buffer anyway of size 512 bytes for these calls. Calling setvbuff(_file,buf,_IONBF,NULL) with a buffer that is not a NULL pointer sets the buffer to size one. Which means that as soon as a char is read it is written to the real buffer. If people are interested in looking at this further they can look at the files under ARM/src/dlib: fgets.c, fflush.c, xfrpep.c and xfwprep.c

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 205:c41fc65bcfb4 1 /* mbed Microcontroller Library
mbed_official 205:c41fc65bcfb4 2 * CMSIS-style functionality to support dynamic vectors
mbed_official 205:c41fc65bcfb4 3 *******************************************************************************
mbed_official 205:c41fc65bcfb4 4 * Copyright (c) 2014, STMicroelectronics
mbed_official 205:c41fc65bcfb4 5 * All rights reserved.
mbed_official 205:c41fc65bcfb4 6 *
mbed_official 205:c41fc65bcfb4 7 * Redistribution and use in source and binary forms, with or without
mbed_official 205:c41fc65bcfb4 8 * modification, are permitted provided that the following conditions are met:
mbed_official 205:c41fc65bcfb4 9 *
mbed_official 205:c41fc65bcfb4 10 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 205:c41fc65bcfb4 11 * this list of conditions and the following disclaimer.
mbed_official 205:c41fc65bcfb4 12 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 205:c41fc65bcfb4 13 * this list of conditions and the following disclaimer in the documentation
mbed_official 205:c41fc65bcfb4 14 * and/or other materials provided with the distribution.
mbed_official 205:c41fc65bcfb4 15 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 205:c41fc65bcfb4 16 * may be used to endorse or promote products derived from this software
mbed_official 205:c41fc65bcfb4 17 * without specific prior written permission.
mbed_official 205:c41fc65bcfb4 18 *
mbed_official 205:c41fc65bcfb4 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 205:c41fc65bcfb4 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 205:c41fc65bcfb4 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 205:c41fc65bcfb4 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 205:c41fc65bcfb4 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 205:c41fc65bcfb4 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 205:c41fc65bcfb4 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 205:c41fc65bcfb4 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 205:c41fc65bcfb4 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 205:c41fc65bcfb4 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 205:c41fc65bcfb4 29 *******************************************************************************
mbed_official 205:c41fc65bcfb4 30 */
mbed_official 205:c41fc65bcfb4 31 #include "cmsis_nvic.h"
mbed_official 205:c41fc65bcfb4 32
mbed_official 205:c41fc65bcfb4 33 #define NVIC_RAM_VECTOR_ADDRESS (0x20000000) // Vectors positioned at start of RAM
mbed_official 205:c41fc65bcfb4 34 #define NVIC_FLASH_VECTOR_ADDRESS (0x08000000) // Initial vector position in flash
mbed_official 205:c41fc65bcfb4 35
mbed_official 431:255afbe6270c 36 int NVIC_vtor_remap = 0; // To keep track that the vectors remap is done
mbed_official 205:c41fc65bcfb4 37
mbed_official 205:c41fc65bcfb4 38 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
mbed_official 205:c41fc65bcfb4 39 int i;
mbed_official 205:c41fc65bcfb4 40 // Space for dynamic vectors, initialised to allocate in R/W
mbed_official 431:255afbe6270c 41 uint32_t *vectors = (uint32_t *)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 205:c41fc65bcfb4 42
mbed_official 205:c41fc65bcfb4 43 // Copy and switch to dynamic vectors if first time called
mbed_official 431:255afbe6270c 44 if (NVIC_vtor_remap == 0) {
mbed_official 205:c41fc65bcfb4 45 uint32_t *old_vectors = (uint32_t *)NVIC_FLASH_VECTOR_ADDRESS;
mbed_official 205:c41fc65bcfb4 46 for (i = 0; i < NVIC_NUM_VECTORS; i++) {
mbed_official 205:c41fc65bcfb4 47 vectors[i] = old_vectors[i];
mbed_official 205:c41fc65bcfb4 48 }
mbed_official 205:c41fc65bcfb4 49 SYSCFG->CFGR1 |= 0x03; // Embedded SRAM mapped at 0x00000000
mbed_official 431:255afbe6270c 50 NVIC_vtor_remap = 1; // The vectors remap is done
mbed_official 205:c41fc65bcfb4 51 }
mbed_official 205:c41fc65bcfb4 52
mbed_official 205:c41fc65bcfb4 53 // Set the vector
mbed_official 205:c41fc65bcfb4 54 vectors[IRQn + 16] = vector;
mbed_official 205:c41fc65bcfb4 55 }
mbed_official 205:c41fc65bcfb4 56
mbed_official 205:c41fc65bcfb4 57 uint32_t NVIC_GetVector(IRQn_Type IRQn) {
mbed_official 205:c41fc65bcfb4 58 uint32_t *vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 205:c41fc65bcfb4 59 // Return the vector
mbed_official 205:c41fc65bcfb4 60 return vectors[IRQn + 16];
mbed_official 205:c41fc65bcfb4 61 }