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LED + BUTTON + INTERRUPTS ?

 
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LED + BUTTON + INTERRUPTS ?
PostPosted: Fri Mar 25, 2005 8:33 am     Reply with quote
Hi !

I would like to use a PIC18F458 that has a button (on RB4) to switch on a led (on A0, for example) if the button is pressed for 4 seconds and not if not. =)

Do i better have to use interrupts ? Or something else ?
Do you have a program to help me ?

Thanks a lot.
Best regards.
Humberto



Joined: 08 Sep 2003
Posts: 1215
Location: Buenos Aires, La Reina del Plata

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PostPosted: Fri Mar 25, 2005 9:47 am     Reply with quote
You will see that this forum is plenty of proposal like yours, the idea is
that you must do the first movement posting a small but complete
C source code to enable us to know what and how are you
trying to do it.
If you tried starting with the examples provided with the CCS compiler
package I�m sure you are ready for this. Once you post your code we will
correct, criticize and propose some tips to guide you.

Best wishes,

Humberto
Guest
PostPosted: Tue Mar 29, 2005 9:26 am     Reply with quote
ok thanks, i found this which works quite well :



Code:
       
If (!input(BUTTON)){      // Wait for Enter Button to be pressed
while (!input(BUTTON));   // Wait for Enter Button to be released
delay_ms(3000);           // Delay 3 s
output_high(LED_1);}      // LED_1 ON
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