PICmicro based barcode reader

ritchie · Joined: 13 Sep 2003 Posts: 87

Hi,

I am planning to make a PICmicro Based Barcode Reader using the following:
1. 1022W or 1022WM barcode slot reader (TTL output undecoded)
2. PIC18F452 (using capcutre/compare module)
3. Barcode Symbology is Code39.

Does anybody who has made a project similar to this one? who can provide me pointers in making such a reader? I don't know if it is a good idea to use capture/compare module? Is there any alternative on this method.

Does anybody who have a code snippet in decoding the TTL output that might help in my design or can provide me of a link for information.

Thank you.

newguy · Joined: 24 Jun 2004 Posts: 1909

I posted some code that reads the codes that an infra-red remote control (like a tv/vcr/stereo remote) sends out. Look in the code library for "IR Remote Code Grabber"

It will give you an idea of what to do. I used the external interrupt 0 (pin B0) to capture the serial data coming out of the remote. It should point you in the right direction.