| gomimelu | Date: Friday, 30/Oct/2015, 7:17 PM | Message # 1 |
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Private
Group: Students
Messages: 1
Status: Offline
| Hi I used pic assembler code long time ago and now i want to start using it again. So i build an eassy program for a couple of leds turn on and off forever. I wrote the code and it worked. But after adding some extra lines it stopped working, cheking my code i discovered that if I add some NOP instructions or any other simple instrucction it stops working (In my code are some NOP or register instructions comented) if you uncoment the NOP or D3 instructions the program stops working. I'm really confused because these are simple eassy instructions and can't understand why this happen. Hope some body could help me. Thanks in advance.
#include<P18f4550.INC>
CONFIG WDT=OFF; disable watchdog timer
CONFIG MCLRE = ON; MCLEAR Pin on
CONFIG DEBUG = ON; Enable Debug Mode
CONFIG LVP = OFF; Low-Voltage programming disabled (necessary for debugging)
CONFIG FOSC = HS
RES_VECT CODE 0x0000 ; processor reset vector
GOTO START ; go to beginning of program
; TODO ADD INTERRUPTS HERE IF USED
MAIN_PROG CODE ; let linker place main program
START
D1 equ 0x23
D2 equ 0x21
D3 equ 0x22
CLRF PORTD
CLRF PORTB
CLRF PORTA
CLRF PORTC
MOVLW 0Eh
MOVWF ADCON1
CLRF TRISA
;NOP
;NOP
;NOP
;NOP
;NOP
;NOP
;NOP
;NOP
;NOP
;movlw D'30'
;movwf D3
al:
MOVLW 0x01
MOVWF PORTA
call Retraso
MOVLW 0x05
call Retraso
MOVLW 0x02
MOVWF PORTA
call Retraso
goto al
Retraso:
MOVLW 0x01
MOVWF PORTD
movlw D'30'
movwf D3
loop3:
movlw D'24'
movwf D2
loop2:
movlw D'168'
movwf D1
loop1:
decfsz D1
goto loop1
decfsz D2
goto loop2
decfsz D3
goto loop3
return
END
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| amykit1 | Date: Thursday, 22/Dec/2016, 9:51 AM | Message # 2 |
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Private
Group: Students
Messages: 4
Status: Offline
| Here you can consult experts, they can be help you.
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