34 lines
708 B
C
34 lines
708 B
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018/10/01 Bernard The first version
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*/
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#include <rthw.h>
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#include <board.h>
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#include <RV32M1_ri5cy.h>
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typedef void (*irq_handler_t)(void);
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extern const irq_handler_t isrTable[];
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void SystemIrqHandler(uint32_t mcause)
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{
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uint32_t intNum;
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if (mcause & 0x80000000) /* For external interrupt. */
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{
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intNum = mcause & 0x1FUL;
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/* Clear pending flag in EVENT unit .*/
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EVENT_UNIT->INTPTPENDCLEAR = (1U << intNum);
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/* Now call the real irq handler for intNum */
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isrTable[intNum]();
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}
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}
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