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Strange RFID reader output... — Parallax Forums

Strange RFID reader output...

jpristeljpristel Posts: 1
edited 2008-07-16 22:25 in General Discussion
I'm trying to figure out what's going on with my RFID reader, the output doesn't match the specs at all...

The spec says that it will output [noparse][[/noparse]0x0A]{10 bytes -- Unique ID}[noparse][[/noparse]0x0D] at 2400 baud, 8-n-1... However I'm getting different results. On my PC, Mac, and STR710 dev kit I get something in hex like:

BD 36 7D 99 9F 99 8F 73 97 93 E5 00
or
BD 36 7D CB FF 96 F6 6C 5D 9B 7F 00

Anyone know what could be going on?

Comments

  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2008-07-16 22:25
    Are both sets of numbers from the same tag? Also, the output of the RFID Reader is Non-Inverted TTL. How are you reading it? The default state of the TX line will be high. I wonder if perhaps you’re using inverted mode.

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    Chris Savage
    Parallax Tech Support
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