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Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/cmsis_nvic.c@606:12ecb532fd15, 2015-08-13 (annotated)

Committer:
mbed_official
Date:
Thu Aug 13 11:45:08 2015 +0100
Revision:
606:12ecb532fd15
Parent:
358:9d7ef901f004 
Synchronized with git revision bd9a1685058d09a17953431dba5541ef33b688bf



Full URL: https://github.com/mbedmicro/mbed/commit/bd9a1685058d09a17953431dba5541ef33b688bf/



KL46Z - Ensure the NVIC table gets copied to RAM even when it is not at 0x0000

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 358:9d7ef901f004 1 /* mbed Microcontroller Library
mbed_official 358:9d7ef901f004 2 * CMSIS-style functionality to support dynamic vectors
mbed_official 358:9d7ef901f004 3 *******************************************************************************
mbed_official 31:42176bc3c368 4 * Copyright (c) 2011 ARM Limited. All rights reserved.
mbed_official 358:9d7ef901f004 5 * All rights reserved.
mbed_official 31:42176bc3c368 6 *
mbed_official 358:9d7ef901f004 7 * Redistribution and use in source and binary forms, with or without
mbed_official 358:9d7ef901f004 8 * modification, are permitted provided that the following conditions are met:
mbed_official 358:9d7ef901f004 9 *
mbed_official 358:9d7ef901f004 10 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 358:9d7ef901f004 11 * this list of conditions and the following disclaimer.
mbed_official 358:9d7ef901f004 12 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 358:9d7ef901f004 13 * this list of conditions and the following disclaimer in the documentation
mbed_official 358:9d7ef901f004 14 * and/or other materials provided with the distribution.
mbed_official 358:9d7ef901f004 15 * 3. Neither the name of ARM Limited nor the names of its contributors
mbed_official 358:9d7ef901f004 16 * may be used to endorse or promote products derived from this software
mbed_official 358:9d7ef901f004 17 * without specific prior written permission.
mbed_official 358:9d7ef901f004 18 *
mbed_official 358:9d7ef901f004 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 358:9d7ef901f004 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 358:9d7ef901f004 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 358:9d7ef901f004 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 358:9d7ef901f004 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 358:9d7ef901f004 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 358:9d7ef901f004 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 358:9d7ef901f004 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 358:9d7ef901f004 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 358:9d7ef901f004 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 358:9d7ef901f004 29 *******************************************************************************
mbed_official 33:e214068ab66c 30 */
mbed_official 31:42176bc3c368 31 #include "cmsis_nvic.h"
mbed_official 31:42176bc3c368 32
mbed_official 33:e214068ab66c 33 #define NVIC_RAM_VECTOR_ADDRESS (0x1FFFE000) // Vectors positioned at start of RAM
mbed_official 606:12ecb532fd15 34 #define NVIC_FLASH_VECTOR_ADDRESS (__vector_table) // Initial vector position in flash
mbed_official 31:42176bc3c368 35
mbed_official 31:42176bc3c368 36 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
mbed_official 31:42176bc3c368 37 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 31:42176bc3c368 38 uint32_t i;
mbed_official 31:42176bc3c368 39
mbed_official 31:42176bc3c368 40 // Copy and switch to dynamic vectors if the first time called
mbed_official 606:12ecb532fd15 41 if (SCB->VTOR < NVIC_RAM_VECTOR_ADDRESS) {
mbed_official 31:42176bc3c368 42 uint32_t *old_vectors = vectors;
mbed_official 31:42176bc3c368 43 vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 31:42176bc3c368 44 for (i=0; i<NVIC_NUM_VECTORS; i++) {
mbed_official 31:42176bc3c368 45 vectors[i] = old_vectors[i];
mbed_official 31:42176bc3c368 46 }
mbed_official 31:42176bc3c368 47 SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
mbed_official 31:42176bc3c368 48 }
mbed_official 31:42176bc3c368 49 vectors[IRQn + 16] = vector;
mbed_official 31:42176bc3c368 50 }
mbed_official 31:42176bc3c368 51
mbed_official 31:42176bc3c368 52 uint32_t NVIC_GetVector(IRQn_Type IRQn) {
mbed_official 31:42176bc3c368 53 uint32_t *vectors = (uint32_t*)SCB->VTOR;
mbed_official 31:42176bc3c368 54 return vectors[IRQn + 16];
mbed_official 31:42176bc3c368 55 }