Jump to content

Kazuo

Members
  • Content count

    1
  • Joined

  • Last visited

Community Reputation

0 Neutral

About Kazuo

  • Rank
    Newbrie
  1. I installed the pic16f84a on PICDEM 2 PLUS DEMO BOARD. I am trying to get an interrupt fron the button RB0 and nothing... What should I do. - I'm using MPLAB IDE - PICDEM 2 PLUS DEMO BOARD http://www.cis.upenn.edu/~lee/06cse480/data/picdem2.pdf Code: ;=== setup and configurations ============= processor 16f84A include <p16f84A.inc> __config _XT_OSC & _WDT_OFF & _PWRTE_ON & _CP_OFF ;=== variables in PIC RAM ================= cblock 0x0d J K count1 count2 old_w old_STATUS endc ;=== MAIN PROGRAM ========================= org 0 goto main ;=== interrupt handler ===================== org 0x04 goto IntServ ;=== main program ========================= main: movlw b'10111111' option movlw b'11111111' tris PORTA movlw b'00000001' tris PORTB clrf PORTB bsf PORTB,0 ;== setup interrupts ============================ bcf INTCON, INTF bsf INTCON, GIE bsf INTCON, INTE ; Flash LED lights: movlw b'00000010' xorwf PORTB, f call long_delay call long_delay call long_delay goto lights ; interrupt service routine IntServ: btfss INTCON,INTF goto notRB0 movwf old_w swapf STATUS,w movwf old_STATUS btfsc PORTB, 0 goto exitISR ; interrupt action movlw D'10' movwf count2 wait: btfsc PORTB,0 goto exitISR decfsz count2,f goto wait ; port-B to turn LED on and OFF movlw b'00000100' xorwf PORTB,f ; exit ISR exitISR swapf old_STATUS,w movfw STATUS swapf old_w,f swapf old_w,w ; reset interrupt notRB0; bcf INTCON,INTF retfie ; delay delay: movlw D'4' movwf count1 repeat decfsz count1,f goto repeat return ; long delay long_delay movlw D'200' movwf J jloop: movwf K kloop: decfsz K,f goto kloop decfsz J,f goto jloop return end
  2. I installed the pic16f84a on PICDEM 2 PLUS DEMO BOARD. I am trying to do a interrupt in the button RB0 and nothing... What should I do.

    - I'm using MPLAB IDE

    - PICDEM 2 PLUS DEMO BOARD http://www.cis.upenn.edu/~lee/06cse480/data/picdem2.pdf

×