Problem to write coding for RFId. Someone Help me =(

fidaus2005 · Joined: 16 Dec 2011 Posts: 2 Location: malaysia

Olimex Mod-RFID125

Pic= 16F877A

http://www.olimex.com/dev/mod-rfid125.html

temtronic · Posted: Sat Dec 17, 2011 6:13 am

Easy enough, as Olimex supplies all the command line code information on page 5 or 6 of the datasheet.pdf.

If you want complete test code(scan for rfid tags, display on local LCD, send to PC via RS232 just send me 4 units and give me 1 week to complete the program.

ezflyr · Joined: 25 Oct 2010 Posts: 1019 Location: Tewksbury, MA

Temtronic,

Ummm, that module requires a USB host, so you aren't likely to get that done with a 16F877A unless you use an FTDI Viniculum chip, or equivalent. Of course, there are PIC's that can operate as a USB host, but that going to take a lot of work!

To the OP, if you want to play with RFID stuff, get a module with a serial port like this one: http://www.sparkfun.com/products/8419

John

temtronic · Posted: Sun Dec 18, 2011 8:50 am

Hay John. There's actually ttl serial pins on the other end, hard to see, but the pdf does talk about them. You'ld have to add wires or hopefully 100thou spaced pins to connect.
I know that cause silly me I downloaded and read the manual...
Jay

fidaus2005 · Joined: 16 Dec 2011 Posts: 2 Location: malaysia

That correct this rfid can be connected to the circuit because it have UART mode.. but i m new in this pic field.. so i dont know how to start coding it hu3

ezflyr · Joined: 25 Oct 2010 Posts: 1019 Location: Tewksbury, MA

Hi Jay,

Manual? We don't need no stinkin' manual Cool

!

You are, of course, correct! I should have read more than just the first couple of lines of the datasheet Embarassed

!

Having said that, it's still a much more capable module (in terms of the interface) than the Sparkfun example, so it may also be more expensive? It also is not particularly breadboard or PCB friendly.

Making that module work, though, looks pretty trivial. There are only a couple of very simple commands to worry about!

To the OP, have you tried sending simple commands to the module, and reading the returned data? What happens? What is the nature of your "problem"?

John