How to program 125Khz UART RFID reader "URGENT"

[abdullah993]

Hello everyone 

i have 125Khz UART RFID reader 

http://wiki.seeedstudio.com/wiki/125Khz_RFID_module_-_UART

i need to program it using myRIO controller to read/write on a nfc tag, how to start? and what is needed for doing it ? 

thanks 

[RavensFan]

It looks like it behaves like a serial device.  So use VISA Write and Read to communicate with it.

[abdullah993]

I did the same but it does not work with me. 

125 Khz Protocol is read only, but the "Seeed" claimed that it is read/write RFID. 

so if any body can give me a hint to start

[RavensFan]

I think you'll need to contact the supplier of that device.  It is unlikely that anyone here has used it before.

It doesn't make sense that you would write anything to an RFID tag (unless you are sending a command to a device to tell it to initiate an RFID read).  Where on that web page did you see that it could read and write?

The only thing I see is an odd bit of code where sometihng writes back on the serial port something that it read.  Kind of like a loopback test on a serial port.

(By the way, not a very good webpage.  "Exampel" ??? spelled wrong.  And several links are broken.

[abdullah993]

well, i want to write on a tag a balance so i can rewrite again a discount amount on the same tag as a payment process. 

the link is for the supplier 🙂

that's why i posted my question here.. 

yeah i forgot to tell that i run RFID example of myRIO project guide, and it works done for reading the serial of the tag. 

[RavensFan · Accepted solution]

The introduction on that page says

"RDM 125KHz card mini-module is designed for reading code from 125KHz card compatible read-only tags and read/write card . It can be applied in office/home security, personal identification, access control, anti-forgery, interactive toy and production control systems etc. "

It only mentions the ability to read.  It doesn't say it can write.  Other than that it can read the code from a read/write card.

[abdullah993]

You are totally right ! that sentence is deception if you did not read it carefully ! 

thank you ! 

[Seeed-AE]

Hi there~ Sorry for the misunderstanding of our description, we will modify the description. If you need to write the NFC card, you can consider the Grove-NFC module. Regards

https://www.seeedstudio.com/Grove-NFC-p-1804.html

[Seeed-AE]

Hi there~ Thanks for your comment. Our webpage does have a lot of deficiencies and mistakes, we will rewrite this page to fix broken links and misspellings. Regards