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請教中斷問題.....
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中級會員
 
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大家好 這是我寫的一個中斷程式 問題出在我使用單步執行
程式並不會跑到中斷向量的位址 請各位幫幫忙 我在想是不是我的中斷旗標沒設定好 以下是我PIC 與TIMER1得初始值設定 當打開 bsf T1CON,TMR1ON 程式不是應該會跑到0x004的位址 但是我的程式只會回到當初呼叫Timer1的位址 請各位幫幫忙 謝謝 initial banksel TRISB clrf TRISB ;定義PORTB為輸出阜 clrf TMR1H ;將Timer1內容清為零 clrf TMR1L clrf INTCON ;將INTCON內容清為零 bcf INTCON,PEIE ;將周邊功能的中斷致能 bcf INTCON,GIE banksel TMR1L clrf TMR1L movlw 0x3C movwf TMR1H movlw 0xB0 movwf TMR1L return ;------------------------------------------------------------------------------------------------- Timer1 banksel T1CON clrf T1CON ;設定Timer1時脈為Fosc/4 bsf INTCON,GIE bsf INTCON,PEIE banksel PIR1 ;選擇PIR1放置的Bank bcf PIR1,TMR1IF;將Timer1的致能旗標清除 banksel PIE1 clrf PIE1 ;將PIE1內容清為零 bsf PIE1,TMR1IE ;將Timer1溢位中斷致能 movlw Numcount1s movwf Reg_count_1s movlw Num1mCount movwf Reg_count_1m clrf TMR1L;把Timer1L清為零，防止進位 movlw 0x3C movwf TMR1H movlw 0xB0 movwf TMR1L bsf T1CON,TMR1ON return
發表於: 2005/9/26 17:56
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