Interrupt routine testing.

Can anyone tell me if an interupt routine can be tested without having to blow a chip and have it in circuit.

I am new to this and have just about finished my first draft of my prog and was wondering whether I had to put an additional routine to simulate what would be seen on ra0 or rb0 when interrupt detecting.

The best way (and only fully accurate way) of testing is to blow a chip, but this only takes seconds anyway.

ukmxer said:

Can anyone tell me if an interupt routine can be tested without having to blow a chip and have it in circuit.

I am new to this and have just about finished my first draft of my prog and was wondering whether I had to put an additional routine to simulate what would be seen on ra0 or rb0 when interrupt detecting.

Click to expand...

If you're programming for the PIC it's possible to write a stimulus for your pins in MPLAB - you will find it in the "Debbuger" menu if you set MPLAB SIM as your debugger. However, for simple projects it's easier to just build a circuit and debug it "live". Also, some simple looking signals ( like mechanical pushbuttons and rotary encoders) are not easy to simulate accurately.

ukmxer said:

Can anyone tell me if an interupt routine can be tested without having to blow a chip and have it in circuit.

I am new to this and have just about finished my first draft of my prog and was wondering whether I had to put an additional routine to simulate what would be seen on ra0 or rb0 when interrupt detecting.

Click to expand...

Just a thought - you most micro's are re-programmable - not sure if you new?

Personally I would simulate it with a some sort of interface to display the pics status/etc.. I'm a big fan of using UART - single wire comms that is quick and efficient, but for interrupt testing I simply make single pins high/low when conditions were met/performed.