Pic16f877a push button

[internetuser2k11]

Hello!
My Circuit Contains a PIC16F877A. PIN RB0 and PB1 is connected to two mom switches with pull-ups and pin RD0 is configured as output pin and is connected to a relay via uln2003a. The mikroBasic code below is not working properly. When I press sw2 the relay gets turned ON but the relay turns off after 3-4 secs. what might be the problem.

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Code Basic4GL - [expand]
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main:
     TRISB = $FF
     TRISD = $00
     PORTB = 0
     PORTD = 0
        
     while(1)
 
 
         if(Button(PORTB, 0, 10, 0)) then
            PORTD.0 = 1
         end if
        
         if(Button(PORTB, 1, 10, 0)) then
            PORTD.0 = 0
         end if

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wend

 

[aameer]

i have worked in mikro C not in this IDE.
But i think it is not necessary to make PORTB=0; as it is not a output port. remove it and check.

 

[hexreader]

My guess is that you need to disable the watchdog timer in configuration settings (edit project)