spinal cord / PokittoLib_

PokittoLib is the library needed for programming the Pokitto DIY game console (www.pokitto.com)

mbed-pokitto/targets/cmsis/TARGET_NXP/TARGET_LPC11U6X/cmsis_nvic.c@5:ea7377f3d1af, 2017-10-11 (annotated)

Committer:
Pokitto
Date:
Wed Oct 11 20:35:27 2017 +0000
Revision:
5:ea7377f3d1af
Fixed PokittoLib. Includes a working custom mbed-src

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pokitto 5:ea7377f3d1af 1 /* mbed Microcontroller Library
Pokitto 5:ea7377f3d1af 2 * CMSIS-style functionality to support dynamic vectors
Pokitto 5:ea7377f3d1af 3 *******************************************************************************
Pokitto 5:ea7377f3d1af 4 * Copyright (c) 2011 ARM Limited. All rights reserved.
Pokitto 5:ea7377f3d1af 5 * All rights reserved.
Pokitto 5:ea7377f3d1af 6 *
Pokitto 5:ea7377f3d1af 7 * Redistribution and use in source and binary forms, with or without
Pokitto 5:ea7377f3d1af 8 * modification, are permitted provided that the following conditions are met:
Pokitto 5:ea7377f3d1af 9 *
Pokitto 5:ea7377f3d1af 10 * 1. Redistributions of source code must retain the above copyright notice,
Pokitto 5:ea7377f3d1af 11 * this list of conditions and the following disclaimer.
Pokitto 5:ea7377f3d1af 12 * 2. Redistributions in binary form must reproduce the above copyright notice,
Pokitto 5:ea7377f3d1af 13 * this list of conditions and the following disclaimer in the documentation
Pokitto 5:ea7377f3d1af 14 * and/or other materials provided with the distribution.
Pokitto 5:ea7377f3d1af 15 * 3. Neither the name of ARM Limited nor the names of its contributors
Pokitto 5:ea7377f3d1af 16 * may be used to endorse or promote products derived from this software
Pokitto 5:ea7377f3d1af 17 * without specific prior written permission.
Pokitto 5:ea7377f3d1af 18 *
Pokitto 5:ea7377f3d1af 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Pokitto 5:ea7377f3d1af 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Pokitto 5:ea7377f3d1af 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Pokitto 5:ea7377f3d1af 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
Pokitto 5:ea7377f3d1af 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
Pokitto 5:ea7377f3d1af 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
Pokitto 5:ea7377f3d1af 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
Pokitto 5:ea7377f3d1af 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
Pokitto 5:ea7377f3d1af 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
Pokitto 5:ea7377f3d1af 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Pokitto 5:ea7377f3d1af 29 *******************************************************************************
Pokitto 5:ea7377f3d1af 30 */
Pokitto 5:ea7377f3d1af 31 #include "cmsis_nvic.h"
Pokitto 5:ea7377f3d1af 32
Pokitto 5:ea7377f3d1af 33 #define NVIC_RAM_VECTOR_ADDRESS (0x10000000) // Vectors positioned at start of RAM
Pokitto 5:ea7377f3d1af 34 #define NVIC_FLASH_VECTOR_ADDRESS (0x0) // Initial vector position in flash
Pokitto 5:ea7377f3d1af 35
Pokitto 5:ea7377f3d1af 36 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
Pokitto 5:ea7377f3d1af 37 uint32_t *vectors = (uint32_t*)SCB->VTOR;
Pokitto 5:ea7377f3d1af 38 uint32_t i;
Pokitto 5:ea7377f3d1af 39
Pokitto 5:ea7377f3d1af 40 // Copy and switch to dynamic vectors if the first time called
Pokitto 5:ea7377f3d1af 41 if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
Pokitto 5:ea7377f3d1af 42 uint32_t *old_vectors = vectors;
Pokitto 5:ea7377f3d1af 43 vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
Pokitto 5:ea7377f3d1af 44 for (i=0; i<NVIC_NUM_VECTORS; i++) {
Pokitto 5:ea7377f3d1af 45 vectors[i] = old_vectors[i];
Pokitto 5:ea7377f3d1af 46 }
Pokitto 5:ea7377f3d1af 47 SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
Pokitto 5:ea7377f3d1af 48 }
Pokitto 5:ea7377f3d1af 49 vectors[IRQn + 16] = vector;
Pokitto 5:ea7377f3d1af 50 }
Pokitto 5:ea7377f3d1af 51
Pokitto 5:ea7377f3d1af 52 uint32_t NVIC_GetVector(IRQn_Type IRQn) {
Pokitto 5:ea7377f3d1af 53 uint32_t *vectors = (uint32_t*)SCB->VTOR;
Pokitto 5:ea7377f3d1af 54 return vectors[IRQn + 16];
Pokitto 5:ea7377f3d1af 55 }