hitag, determine adc levels to get better demodulation

RfidResearchGroup / proxmark3

Iceman Fork - Proxmark3

http://www.icedev.se

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Closed cosmo6110 closed 4 years ago

cosmo6110 commented 4 years ago

wrong freq for me! it stop working (keyfob) on 125khz

FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz FpgaSendCommand(FPGA_CMD_SET_DIVISOR, LF_DIVISOR_134);

The update is a huge improvement. Thank's for the hard work on hitag

iceman1001 commented 4 years ago

Not sure I am following now. 125Khz worked for you or did 134Khz work for you?

What device do you have? Which antenna?

cosmo6110 commented 4 years ago

I got the Proxmark3 RDV4.01 with LF Read Range (long range antenna). After the latest update Hitag2 "LF_DIVISOR_134" it stop working on the 125 khz,

I changed this line back to FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95) ok

iceman1001 commented 4 years ago

Does your antenna have a setting for freq 125/134 and Q 14/7 ? Take a picture of it. If so, try 134 / 7

otherwise try

hw dbg 4
data plot
lf hitag info
data sample
data ltrim 30000

And post a picture of the graph...

iceman1001 commented 4 years ago

interesting that your tag is 125 kHz.
I should adjust the hitag code to use the lf config setting. so we can use both 125 or 134.