[AVR] Communication between RLM100 UHF RFID module and AVR microControllers

I have an **broken link removed**. I searched a lot, but I didn't found anything useful that explain how I can use this modules. I mean the only thing that I understand so far it that this modules use UART protocol to communicate with the MCU, but I need a list of commands that it support, right?

May I ask you to share me in your experiences with these kind of modules? Does they have an standard list of commands or something, or I must gain a more complete data sheet? If so, where I can find it? Why it is not available on the Internet?

All I want to do is reading a tag and storing its number(?) in the MCU EEPROM.

ebrah said:

I have an **broken link removed**.

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Well, before we get too excited.

Do you have a 840～930MHz （FHSS), ISO18000-6C/EPC Class1 Gen2 RFID tags, by which to test the device?

ebrah said:

I searched a lot, but I didn't found anything useful that explain how I can use this modules. I mean the only thing that I understand so far it that this modules use UART protocol to communicate with the MCU, but I need a list of commands that it support, right?

Click to expand...

Perhaps not, many of these types of devices operate in a default mode which simply outputs the RFID number once a valid and compatible RFID tag comes within proximity of the RFID reader module.

ebrah said:

May I ask you to share me in your experiences with these kind of modules? Does they have an standard list of commands or something, or I must gain a more complete data sheet? If so, where I can find it? Why it is not available on the Internet?

Click to expand...

While I do not have any experience with this particular RFID reader/writer module, I do have experience with similar products.

I would strongly suggest contacting Ray-Links directly and request any documentation, appnotes, and support files for this particular unit.



However, they may require a nondisclosure agreement and/or purchase of a development kit.

I would indicate to them, you have a sample and are considering incorporating it into a design.

In any event without the proper RFID tags, you are just treading water.


BigDog

Thank you dear BigDog for you replay.

bigdogguru said:

Do you have a 840~930MHz (FHSS), ISO18000-6C/EPC Class1 Gen2 RFID tags, by which to test the device?

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Why did you ask this question? Does that mean that these kind of tags are hard to find, limited or something? Currently I haven't any tag, but after that I understand how to work with this module, I will buy some.

bigdogguru said:

Many of these types of devices operate in a default mode which simply outputs the RFID number once a valid and compatible RFID tag comes within proximity of the RFID reader module.

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Even if my module follow the above default mode, I must be aware of the format of the data that the module returns on respond of presence of a tag (And also the Baudrate, Parity = ?, Stop bits = ? , and so on for example), right?

bigdogguru said:

I would strongly suggest contacting Ray-Links directly and request any documentation, App notes, and support files for this particular unit.

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I already checked the above website. Unfortunately I didn't find any email address on that website (I have some trouble with calling and speaking!). Moreover, as I live in Iran and our country (Including our banks) is boycotted by America, I think they won't replay to my emails.

bigdogguru said:

I would indicate to them, you have a sample and are considering incorporating it into a design.

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I didn't got this part of your replay. Do you mean that you can verify me to them to help me?