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| Micro Controllers Discuss all aspects of micro controllers - building them, coding them, etc. All controllers are welcome - PIC, BASIC, Z8 Encore!, etc. |
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6th January 2006, 02:55 PM
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 how to give phase shift of 120degree hello everybody, i'm loading the code here which gives me output as a 50hz pulse on each pin to which i'm giving high voltage first and on pin PORTC,5 it doesn't matter voltage is high or low a 50hz pulse is there.in same code i'm using timer3 for a phase shift of 120degree but while debugging its showing me that much delay in between req pins but in actual its not showing on CRO where i'm doing wrong CODE: #include "P18F458.inc" TENMH equ D'16' TENML equ D'243' twoMH equ D'7' twoML equ D'19' oneMH equ D'4' oneML equ D'7' COUNT2 equ D'200' red equ B'10100000' red1 equ B'01000000' F EQU 0x0001 VARIEBALS UDATA COUNTH res 1 COUNTL res 1 COUNT1 RES 1 COUNT3 RES 1 ;COUNT2 RES 1 COUNT4 RES 1 twoL res 1 twoH res 1 oneL res 1 oneH res 1 org 0x00000000 goto START ORG 0X00000008 GOTO TMR3_ISR org 0x000000ae START clrf PORTC clrf PORTD clrf LATD clrf LATC movlw 0x00 movwf TRISD movwf TRISC movlw 0x01 bsf RCON,IPEN ;enable priority interrupts. ; bSf IPR1,TMR1IP ;set Timer1 as a high priority interrupt source bsf IPR2,TMR3IP ;set Timer3 as a low priority interrupt source ; bcf PIR1,TMR1IF ;clear the Timer1 interrupt flag bcf PIR2,TMR3IF ;clear the Timer3 interrupt flag ; bsf PIE1,TMR1IE ;enable Timer1 interrupts bsf PIE2,TMR3IE ;enable Timer3 interrupts ; BSF INTCON,TMR0IE ; BCF INTCON,TMR0IF bsf INTCON,GIEH ;set the global interrupt enable bits bsf INTCON,GIEL ; " clrf T3CON clrf TMR3H ;clear Timer1 high clrf TMR3L ;clear Timer1 low movlw 0xD0 movwf TMR3H movlw 0x00 movwf TMR3L bsf T3CON,TMR3ON ;turn on Timer3 MOVLW 0X01 MOVWF COUNT4 bsf LATD,7 bSf LATD,5 bSf LATD,6 bsf LATD,4 ; loop goto loop return ;************************************ ;ISR ROUTINES ;************************************ TMR3_ISR CPFSEQ COUNT4 LP1 goto lpl LP2 ;RCALL DELAY1 BTG LATD,7 BTG LATD,6 INCF COUNT4 movlw 0x02 cpfseq COUNT4 lp0 goto lpl lp00 bcf PIR2,TMR3IF ;Clear the Timer1 interrupt flag. movlw D'200' movwf COUNT2 lp000 movlw 0xED movwf TMR3H movlw 0xB0 movwf TMR3L movlw 0x02 T1POLLl btfss PIR2,TMR3IF ;Poll TMR11 interrupt flag to wait for another ; ; TMR1 overflow. bra T1POLLl bcf PIR2,TMR3IF ;Clear the Timer1 interrupt flag again. decfsz COUNT2,1 goto lp000 CPFSEQ COUNT4 LPP1 goto lpl LPP2 DECF COUNT4 ; decf COUNT4 ; decf COUNT4 GOTO LP3 LP3 BTG LATD,5 BTG LATD,4 movlw 0xD0 movwf TMR3H movlw 0x00 movwf TMR3L MOVLW 0X01 GOTO lpl lpl RETFIE END | |
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6th January 2006, 04:03 PM
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| Use the code button to poperly post your code.
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7th January 2006, 06:57 AM
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| Re: how to give phase shift of 120degree Quote:
CODE: #include "P18F458.inc" TENMH equ D'16' TENML equ D'243' twoMH equ D'7' twoML equ D'19' oneMH equ D'4' oneML equ D'7' COUNT2 equ D'200' red equ B'10100000' red1 equ B'01000000' F EQU 0x0001 VARIEBALS UDATA COUNTH res 1 COUNTL res 1 COUNT1 RES 1 COUNT3 RES 1 ;COUNT2 RES 1 COUNT4 RES 1 twoL res 1 twoH res 1 oneL res 1 oneH res 1 org 0x00000000 goto START ORG 0X00000008 GOTO TMR3_ISR org 0x000000ae START clrf PORTC clrf PORTD clrf LATD clrf LATC movlw 0x00 movwf TRISD movwf TRISC movlw 0x01 bsf RCON,IPEN ;enable priority interrupts. ; bSf IPR1,TMR1IP ;set Timer1 as a high priority interrupt source bsf IPR2,TMR3IP ;set Timer3 as a low priority interrupt source ; bcf PIR1,TMR1IF ;clear the Timer1 interrupt flag bcf PIR2,TMR3IF ;clear the Timer3 interrupt flag ; bsf PIE1,TMR1IE ;enable Timer1 interrupts bsf PIE2,TMR3IE ;enable Timer3 interrupts ; BSF INTCON,TMR0IE ; BCF INTCON,TMR0IF bsf INTCON,GIEH ;set the global interrupt enable bits bsf INTCON,GIEL ; " clrf T3CON clrf TMR3H ;clear Timer1 high clrf TMR3L ;clear Timer1 low movlw 0xD0 movwf TMR3H movlw 0x00 movwf TMR3L bsf T3CON,TMR3ON ;turn on Timer3 MOVLW 0X01 MOVWF COUNT4 bsf LATD,7 bSf LATD,5 bSf LATD,6 bsf LATD,4 ; loop goto loop return ;************************************ ;ISR ROUTINES ;************************************ TMR3_ISR CPFSEQ COUNT4 LP1 goto lpl LP2 ;RCALL DELAY1 BTG LATD,7 BTG LATD,6 INCF COUNT4 movlw 0x02 cpfseq COUNT4 lp0 goto lpl lp00 bcf PIR2,TMR3IF ;Clear the Timer1 interrupt flag. movlw D'200' movwf COUNT2 lp000 movlw 0xED movwf TMR3H movlw 0xB0 movwf TMR3L movlw 0x02 T1POLLl btfss PIR2,TMR3IF ;Poll TMR11 interrupt flag to wait for another ; ; TMR1 overflow. bra T1POLLl bcf PIR2,TMR3IF ;Clear the Timer1 interrupt flag again. decfsz COUNT2,1 goto lp000 CPFSEQ COUNT4 LPP1 goto lpl LPP2 DECF COUNT4 ; decf COUNT4 ; decf COUNT4 GOTO LP3 LP3 BTG LATD,5 BTG LATD,4 movlw 0xD0 movwf TMR3H movlw 0x00 movwf TMR3L MOVLW 0X01 GOTO lpl lpl RETFIE END[code][/code] | ||
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