关于arm9 按键中断

吕小蒙

关于arm9 按键中断 [复制链接]

最简单的按键中断控制led亮灭，调了将近两天还是出不来。求大神们拯救。
minni2440的板子

#include"2440addr.h"
#define U32 unsigned int
static void __irq Key_ISR(void);

delay()
{
volatile int i;
for(i=0;i<=0x10000;i++);
}


int main()
{
rINTPND=rINTPND;
rSRCPND=rSRCPND;

rINTMSK=0XFFFFdF;
rINTMOD=0;

rGPGCON &= ~(0x3<<0); /*set eint8 as interrupt*/
rGPGCON |= (0x2<<0);

rEXTINT1 &= ~(0xF<<0); //下降沿触发
rEXTINT1|=0X2;


rEINTPEND |= (1<<8); /*外部中断待定寄存器*/


rEINTMASK=0xfffeff; /*外部中断屏蔽寄存器*/
pISR_EINT8_23=(U32)Key_ISR;


rGPBCON|=0x400; //配置led1
rGPBCON&=~0x800;


rGPBDAT&=~0x20;

while(1);

}


static void __irq Key_ISR(void)
{
if(rEINTPEND&(1<<8))
{

rGPBDAT=~rGPBDAT; //led取反
rEINTPEND |= 1<< 8;
ClearPending(BIT_EINT8_23);
}
}