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External Interrupt Handling Mechanism with 16F877

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Sathiesh Kumar

New Member
Hi,

Finally i displayed a message in LCD...Thanx to all those who helped me...
The problem is that we have to initialize the I/O ports as Digital IO..

Now i would like to work on External Interrupts...How we have to initialize this interrrupts..what were the command words we have to use....Help me...

Thanx in Advance...

Sathiesh Kumar.V

9444721638
 

birdman0_o

Active Member
What language are you using?

The PORTB interrupt pin will be exactly what you want for 1 interrupt (RB0)

PORTB bit 4-7 can be configured as interrupt on change sources for more than a 1 pin interrupt.
 

Sathiesh Kumar

New Member
interrupt mechanism

Thanx for your reply...
I am using c language and the compiler is MicroC... can you give me a sample c code for interrupt mechanism....
 

birdman0_o

Active Member
Why can't you write your own? It's not hard. It's about 10-20 to set up, not a lot of work. If you do it on your own, you will also understand how the code works.
 

Sathiesh Kumar

New Member
thanx..i will write it on my own an check it...if there is any problem i will contact you....
 
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