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mbed SDK library sources

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Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_NXP/TARGET_LPC81X/cmsis_nvic.c

Committer:
mbed_official
Date:
2013-11-11
Revision:
46:bebbbd80dd87

File content as of revision 46:bebbbd80dd87:

/* mbed Microcontroller Library - cmsis_nvic for LPC11U24
 * Copyright (c) 2011 ARM Limited. All rights reserved.
 *
 * CMSIS-style functionality to support dynamic vectors
 */ 
#include "cmsis_nvic.h"

#define NVIC_RAM_VECTOR_ADDRESS (0x10000000)  // Vectors positioned at start of RAM
#define NVIC_FLASH_VECTOR_ADDRESS (0x0)       // Initial vector position in flash

void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
    uint32_t *vectors = (uint32_t*)SCB->VTOR;
    uint32_t i;

    // Copy and switch to dynamic vectors if the first time called
    if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
        uint32_t *old_vectors = vectors;
        vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
        for (i=0; i<NVIC_NUM_VECTORS; i++) {
            vectors[i] = old_vectors[i];
        }
        SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
    }
    vectors[IRQn + 16] = vector;
}

uint32_t NVIC_GetVector(IRQn_Type IRQn) {
    uint32_t *vectors = (uint32_t*)SCB->VTOR;
    return vectors[IRQn + 16];
}