Parse Clock and Data from Cardswipe

[adamp524]

I'm using a magnetic cardswipe reader which is read using two signals: clock and data. (The cards swiped are encoded in ABA Track 2 format). The clock pin is connected to an interrupt pin on the PIC and the data is connected to a standard input.

The idea is that each time the clock pulses, the input state of the data pin is read and this data added to a buffer for processing.

How would I create a buffer that can be used to store the incoming data and be checked for a full cardswipe?

I assume that there is too much processing involved to process a full cardswipe in the interrupt routine so a secondary processing function would have to be used? Any ideas on how I could implement this?

Thanks

[PCM programmer]

CCS card reader example and driver files:

[adamp524]

Thanks for the post, I've looked at the mcr.c file and it works well for my cardswipe BUT I need it to work without using the card present signal. Any ideas on how I could achieve this?

Thanks

[PCM programmer]

What is the manufacturer and model number of your reader ?
Post a link to the website for the reader.