PIC18F4520: Analog Data Acquisition

[lalit2308]

hello everyone. . .
I need some help on my project.
I need to read analog inputs from 3 pins from port A when i receive an interrupt/trigger on pin RB0. Analog data will b converted to 10 bit digital and transmitted using UART terminal after attaching some headers. . .

Rest of the code is ready is in C, but i m facing problems invoking the interrupt function. . .
please help. . . .

 

[hassanmd]

wat kind of problem?

 

[DineshSL]

Hi,

In main program, you need to enable global interrupts (GIE bit), enable External Interrupt (relevant INTxIE bit), set relevant INTEDGx depending on rising or falling edge that interrupt should be occur.

There should be a special function in you language to write interrupt routine, use it. Execute what ever needed inside it and at end, clear relevant flag INTxF bit.
Hope this helps you,