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