pause puts me in sleep mode


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    EDWARD Guest

    Default pause puts me in sleep mode

    Its Edward again, with yet another problem.

    i have a solenoid being driven by a NPN transistor. the base of the NPN is conneted to portc.2 if i make portc.2 output high it will turn on the solenoid as expected. i also have a push button connected to portb.0.
    the goal is to turn on the solenoid for a short deley then turn off.

    now comes the problem

    when i use the PAUSE command it puts my pic 16f73 into low power mode or something, cause i only read ~3.5 volts on the vdd.

    below are the two codes.
    both codes work when led+resistor unit replace solenoid (no solenoid)
    one works the other does not when solenoid is connected (solenoid)

    'works


    TRISC=235 'set PORTC as output on needed pins
    TRISB=251 'PORT B INPUT EXCEPT on uneeded
    '------------------------------------
    MAIN:

    PORTC=%00010000 'PWR LOCK-ON & solenoid data low

    IF PORTB.0=1 THEN 'BUTTON 2 IS PRESSED ACTIVATE SOLENOID
    GOTO SHOOT
    ENDIF

    IF PORTB.4 = 1 THEN 'BUTTON 1 IS PRESSED THEN EXIT
    GOTO EXIT
    ENDIF

    GOTO MAIN
    '---------------------------------------------------
    EXIT:
    PORTC = %00000000 'LOW PORTC all PWR OFF
    END
    '---------------------------------------------------

    SHOOT:
    PORTC.2 = 1 'SOLENOID ACTIVE
    GOTO MAIN
    '-------------------------------------------------








    'doesnt work below

    TRISC=235 'set PORTC as output on needed pins
    TRISB=251 'PORT B INPUT EXCEPT on uneeded
    '------------------------------------
    PORTC=%00010000 'PWR LOCK-ON

    MAIN:
    IF PORTB.0=1 THEN 'BUTTON 2 IS PRESSED ACTIVATE SOLENOID
    GOTO SHOOT
    ENDIF

    IF PORTB.4 = 1 THEN 'BUTTON 1 IS PRESSED THEN EXIT
    GOTO EXIT
    ENDIF

    GOTO MAIN
    '---------------------------------------------------
    EXIT:
    PORTC = %00000000 'LOW PORTC all PWR OFF
    END
    '---------------------------------------------------

    SHOOT:
    PORTC.2 = 1 'SOLENOID ACTIVE for 1/5 seconds
    PAUSE 200 '<- RIGHT HERE RIGHT HERE RIGHT HERE IS PROBLEM!
    PORTC.2 = 0
    GOTO MAIN
    '-------------------------------------------------


    lastly when i disonnect the solenoid everything works fine again without a need to reset the pic. so the working model only alows the solenoid active AS LONG AS IM HOLDING BUTTON 2 DOWN. not a desired function i want the solen active for x number of seconds then off.

    2 things come to mind.

    1. if it was a hardware problem, why would it work just fine without the pause command.

    2. when i tell portc.2 = 0 could that effect anyother pin on the portc?

    u should also know that i have a "power on" command. becaue my boards power button is momentary button, the board was desgned that as long as portc.4 is high the vdd will be 5+. the board basically works like this.

    1 press and hold pwr momentary button.
    2 that sends 5+ to the pic and it starts the program
    3 in the program I put portc.4 = 1 so that the vdd Locks-On
    4 to power off pic just portc.4 = 0 or all of portC=0
    5 that makes a transistor somewhere "off"

    sory if i made this one too long.
    Last edited by EDWARD; - 5th May 2005 at 07:57.

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