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72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2015-2017 Nuvoton
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MBED_CMSIS_NVIC_H
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#define MBED_CMSIS_NVIC_H
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#include "cmsis.h"
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#define NVIC_USER_IRQ_OFFSET 16
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#define NVIC_USER_IRQ_NUMBER 32
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#define NVIC_NUM_VECTORS (NVIC_USER_IRQ_OFFSET + NVIC_USER_IRQ_NUMBER)
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/* Avoid optimization error on e.g. ARMC6
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*
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* If NVIC_FLASH_VECTOR_ADDRESS is directly defined as 0, the compiler would see it
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* as NULL, and deliberately optimize NVIC_GetVector to an undefined instruction -
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* trapping because we're accessing an array at NULL.
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*
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* A suggested solution by Arm is to define NVIC_FLASH_VECTOR_ADDRESS as a symbol
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* instead to avoid such unwanted optimization.
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*/
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#if defined(__ARMCC_VERSION)
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extern uint32_t Image$$ER_IROM1$$Base;
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#define NVIC_FLASH_VECTOR_ADDRESS ((uint32_t) &Image$$ER_IROM1$$Base)
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#elif defined(__ICCARM__)
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#pragma section = "ROMVEC"
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#define NVIC_FLASH_VECTOR_ADDRESS ((uint32_t) __section_begin("ROMVEC"))
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#elif defined(__GNUC__)
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extern uint32_t __vector_table;
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#define NVIC_FLASH_VECTOR_ADDRESS ((uint32_t) &__vector_table)
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Set the ISR for IRQn
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*
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* Sets an Interrupt Service Routine vector for IRQn; if the feature is available, the vector table is relocated to SRAM
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* the first time this function is called
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* @param[in] IRQn The Interrupt Request number for which a vector will be registered
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* @param[in] vector The ISR vector to register for IRQn
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*/
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void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector);
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/** Get the ISR registered for IRQn
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*
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* Reads the Interrupt Service Routine currently registered for IRQn
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* @param[in] IRQn The Interrupt Request number the vector of which will be read
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* @return Returns the ISR registered for IRQn
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*/
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uint32_t NVIC_GetVector(IRQn_Type IRQn);
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#ifdef __cplusplus
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}
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#endif
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#endif
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