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Re: 为什么进不了外部中断? 请指教
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資深會員
 
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參照：
dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304 devices implement a total of 22 registers for the interrupt controller: • INTCON1 • INTCON2 • IFSx • IECx • IPCx • INTTREG 7.3.1 INTCON1 AND INTCON2 Global interrupt control functions are controlled from INTCON1 and INTCON2. INTCON1 contains the Interrupt Nesting Disable (NSTDIS) bit as well as the control and status flags for the processor trap sources. The INTCON2 register controls the external interrupt request signal behavior 看一下吧 ~~~ DATASHEET 73頁
發表於: 2009/10/19 10:19
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为什么进不了外部中断? 请指教
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新會員
 
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#include"p33fj16mc304.h"
int main() { _INT0EP=1;//下降沿中断 _INT0IP=6;//中断优先级为6 _INT0IE=1;//中断使能 ADPCFG=0XFF;//禁用ad TRISC=0;//c口输出,驱动led,只是中断状态 LATC=0xff;//让led全亮 TRISB=0XFF;//中断0的pin,设为输入. while(1); } void _ISR _INT0Interrupt(void) { _INT0IF=0;//清中断标志 LATC=0X00;//一旦进入中断,让led全灭. } 总是进不去中断,int0脚,上皆有上拉电阻.
發表於: 2009/10/17 18:42
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