mirror of https://github.com/ARMmbed/mbed-os.git
66 lines
2.6 KiB
C
66 lines
2.6 KiB
C
/*******************************************************************************
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* Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
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* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of Maxim Integrated
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* Products, Inc. shall not be used except as stated in the Maxim Integrated
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* Products, Inc. Branding Policy.
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*
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* The mere transfer of this software does not imply any licenses
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* of trade secrets, proprietary technology, copyrights, patents,
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* trademarks, maskwork rights, or any other form of intellectual
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* property whatsoever. Maxim Integrated Products, Inc. retains all
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* ownership rights.
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*******************************************************************************
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*/
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#include "cmsis_nvic.h"
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#if defined(TOOLCHAIN_GCC_ARM) || defined(TOOLCHAIN_ARM_STD)
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__attribute__((aligned(256)))
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#endif
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#if defined(TOOLCHAIN_IAR)
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#pragma data_alignment=256
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#endif
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static void (*ramVectorTable[MXC_IRQ_COUNT])(void);
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void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector)
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{
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uint32_t *vectors = (uint32_t*)SCB->VTOR;
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uint32_t i;
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// Copy and switch to dynamic vectors if the first time called
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if (SCB->VTOR != (uint32_t)ramVectorTable) {
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uint32_t *old_vectors = (uint32_t*)SCB->VTOR;
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vectors = (uint32_t*)ramVectorTable;
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for (i = 0; i < NVIC_NUM_VECTORS; i++) {
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vectors[i] = old_vectors[i];
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}
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SCB->VTOR = (uint32_t)ramVectorTable;
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}
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vectors[IRQn + NVIC_USER_IRQ_OFFSET] = vector;
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}
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uint32_t NVIC_GetVector(IRQn_Type IRQn)
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{
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uint32_t *vectors = (uint32_t*)SCB->VTOR;
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return vectors[IRQn + NVIC_USER_IRQ_OFFSET];
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}
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