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Re: p16f877, 關TMR1中斷使用問題
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新會員
 
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謝謝指導。仍無法找到問題所在。
此為範例程式 因配合bootloader，所以: reset vector 設在0x10, 而interrupt vector設在0x14 其中macro是將W_reg及STATUS狀態先暫存，待程式執行完後 再回存。 在interrupt子程式中只有T1_Int有程式，作為測式TMR1 Interrupt用。 請再次不吝指教。 list p=16f877,r=dec #include "p16f877.inc" #include "mymacro.mac" ;******* Define variables here ************* W_Temp equ 0x21 STATUS_Temp equ 0x22 Counter equ 0x23 ;******* Start and Interrupt vector ************* org 0x10 ; reset vector goto Main_Program org 0x14 goto Int_Service ; interrupt vector ;******* Main Process 'Start' ******************* Main_Program: call Initial Main_Program_End: goto Main_Program_End ;******* Main Process 'End' ********************* ;------------------------------------------------ ;******* Program Test 'Start' ******************* Program_Test: Program_Test_End: return ;******* Program Test 'End' ********************* ;------------------------------------------------ ;******* Function Call 'Start' ****************** Function_Test: ;------------------------------------------------ Time_Ini: banksel TMR1H movlw 0xff movwf TMR1H movlw 0xee movwf TMR1L return ;------------------------------------------------ Function_Test_End: retlw 0 ;******* Function Call 'End' ******************** ;------------------------------------------------ ;******* Initial System 'Start' ***************** Initial: banksel TRISD clrf TRISD banksel PORTD movlw 0x01 movwf PORTD movlw 0x00 movwf T1CON clrf Counter call Time_Ini banksel INTCON bsf INTCON, GIE bsf INTCON, PEIE banksel PIE1 bsf PIE1,TMR1IE banksel T1CON bsf T1CON,TMR1ON Initial_End: return ;******* Initial System 'End' ******************* ;------------------------------------------------ ;******* Interrupt Service 'Start' ************** Int_Service: PUSH_W_STATUS W_Temp,STATUS_Temp ;Macro ;******* Check interrupt source ************** btfsc INTCON,INTF goto EX_Int btfsc INTCON,T0IF goto T0_Int btfsc INTCON,RBIF goto RB_Int ; peripheral 1 interrupt ********************* banksel PIR1 btfsc PIR1,TMR1IF goto T1_Int btfsc PIR1,TMR2IF goto T2_Int btfsc PIR1,CCP1IF goto CCP1_Int btfsc PIR1,SSPIF goto SSP_Int btfsc PIR1,TXIF goto TX_Int btfsc PIR1,RCIF goto RC_Int btfsc PIR1,ADIF goto AD_Int btfsc PIR1,PSPIF goto PSP_Int ; peripheral 2 interrupt ********************* btfsc PIR2,CCP2IF goto CCP2_Int btfsc PIR2,BCLIF goto BCL_Int btfsc PIR2,EEIF goto EE_Int ;--------------------------------------------- ; Interrupt Service routine ****************** EX_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf INTCON,INTF goto Int_Service_End T0_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf INTCON,T0IF goto Int_Service_End RB_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf INTCON,RBIF goto Int_Service_End T1_Int: ;******* add your code here ****************** call Time_Ini incf Counter,F movf Counter,W sublw 0xa4 btfss STATUS,Z goto T1_Int_End bcf STATUS,C rlf PORTD,W rlf PORTD,F clrf Counter ;--------------------------------------------- T1_Int_End: bcf PIR1,TMR1IF goto Int_Service_End T2_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf PIR1,TMR2IF goto Int_Service_End CCP1_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf PIR1,CCP1IF goto Int_Service_End SSP_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf PIR1,SSPIF goto Int_Service_End TX_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf PIR1,TXIF goto Int_Service_End RC_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf PIR1,RCIF goto Int_Service_End AD_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf PIR1,ADIF goto Int_Service_End PSP_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf PIR1,PSPIF goto Int_Service_End CCP2_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf PIR2,CCP2IF goto Int_Service_End BCL_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf PIR2,BCLIF goto Int_Service_End EE_Int: ;******* add your code here ****************** ;--------------------------------------------- bcf PIR2,EEIF goto Int_Service_End ;--------------------------------------------- POP_W_STATUS W_Temp,STATUS_Temp ;Macro Int_Service_End: retfie ;******* Interrupt Service 'End' **************** ;------------------------------------------------ end
發表於: 2005/1/11 14:30
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Re: p16f877, 關TMR1中斷使用問題
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高級會員
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ORG 0x000 ; processor reset vector
clrf PCLATH ; 保證頁位元被清除 goto main ; 到程式開始位址 ;************************************** ;*** INTERRUPT SERVICE ROUTINE *** ;*** PROGRAM BY LEE-CHIN-WEI *** ;*** INITIAL DATE : 2003-06-09 *** ;************************************** ORG 0x004 ; 中斷向量位址 movwf w_temp ; save off current W register contents movf STATUS,w ; move status register into W register movwf status_temp ; save off contents of STATUS register BTFSS INTCON,T0IF ; TIMER INT 0 FLAG == 1 ? GOTO END_INT ; NO THEN RETURN BCF INTCON,T0IF ; YES THEN CLEAR T0IF FLAG BSF F_TMAIN ; SET THE MAIN LOOP FLAG=1 MOVLW .6 MOVWF TMR0 ; isr code can go here or be located as a call subroutine elsewhere END_INT: movf status_temp,w ; retrieve copy of STATUS register movwf STATUS ; restore pre-isr STATUS register contents swapf w_temp,f swapf w_temp,w ; restore pre-isr W register contents retfie ; return from interrupt ;********************************************* ;*** MAIN SERVICE ROUTINE ;*** INITIAL DATE 2003-06-09 ;********************************************* main CALL INIT_IO ; initial all IO port CALL CLEAR_ALL_MEMORY ; clear all memory CALL SYSTEM_INITIAL ; the system initial service routine LOOP: CALL KEY_SCAN ; KEY SCAN CALL KEY_DEBOUNCE_PROC ; KEY DEBOUNCE PROCESS CALL CHECK_SYSTEM_TIME ; CHECK THE SYSTEM TIME CALL FUN_PROC LOOP1: BTFSS F_TMAIN ; GOTO LOOP1 ; BCF F_TMAIN ; NOP ; GOTO LOOP ; ;************************************** ;*** SYSTEM INITIAL SERVICE ROUTINE *** ;*** INITIAL DATE : 2003-06-09 *** ;*** PROGRAM BY LEE-CHIN-WEI *** ;************************************** SYSTEM_INITIAL: BANKSEL OPTION_REG ;OPTION_REG IN RAM BANK 1這一點要特別注意 MOVLW B'00000011' ; 1:16 FOR TIMER MOVWF OPTION_REG BSF INTCON,GIE BSF INTCON,T0IE BANKSEL TMR0 MOVLW .6 MOVWF TMR0 RETLW 0 我想你可能忘了切BANK 我在systems_initial第一行註解你可以看一下 
發表於: 2005/1/11 13:34
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Re: p16f877, 關TMR1中斷使用問題
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高級會員
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把程式貼上
這樣很難替你診斷
發表於: 2005/1/11 13:28
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p16f877, 關TMR1中斷使用問題
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新會員
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小弟最近才接觸PIC16F877。
那位先進有空時請不吝指導下列問題: 在設定Timer1 interrupt時遇到下列問題: 當Timer1 overflow時程式會直接回到 reset vector而不是到 interrupt vector。 小弟有再三確認已設定: movlw 0x00 movwf T1CON INTCON GIE, PEIE, 設為1 PIE1 TMR1IE 設為1 最後 t1con TMR1ON, 設為1。 以上。不知問題是發生在那裡。
發表於: 2005/1/11 12:35
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