Keypad Interfacing - newbie Question

This is the same as interfacing any microcontroller to a keypad -- I'd suggest either asking on the embedded group, doing a web search, or looking through back issues of Circuit Cellar.

It is _not_ rocket science.

Whoops -- I thought I was on the DSP group, there. Sorry.

It's still not rocket science, and Circuit Cellar is still a valid resource.

If it's a simple keyboard that just pulls one line up or down for each key, look in the TI example software for something that will read ports. Use that to read your pins, and look for the '1' or '0' that indicates a pressed key. If it's a keyboard that requires you to do a scan, do some web searching -- there should be a good, non-terse explanation out there.

Here's an Atmel reference which is excellent.

The method is the same regardless of processor technology.

This is another of those questions that crops up fairly regularly but this little document might show you how in very simple terms.

more goodies from 1980

martin

hi

thanks to all u guys for the resources. I have a lot of additional info to play around with now..

will keep you updated of my progress..

regards

skn