From 0e5ad8f29916a47946648dd30de260bd0197b2ec Mon Sep 17 00:00:00 2001 From: Benjamin Larsson Date: Sun, 24 Jan 2016 23:08:23 +0100 Subject: Add t55xx write files --- rfid/t55xx/README | 34 ++++++++++++++++++++++++++++++++++ rfid/t55xx/em4305_write.sr | Bin 0 -> 11353 bytes rfid/t55xx/t5557_write.sr | Bin 0 -> 105589 bytes 3 files changed, 34 insertions(+) create mode 100644 rfid/t55xx/README create mode 100644 rfid/t55xx/em4305_write.sr create mode 100644 rfid/t55xx/t5557_write.sr (limited to 'rfid') diff --git a/rfid/t55xx/README b/rfid/t55xx/README new file mode 100644 index 0000000..b6ec4bd --- /dev/null +++ b/rfid/t55xx/README @@ -0,0 +1,34 @@ +------------------------------------------------------------------------------- +T55xx 125kHz RFID write protocol +------------------------------------------------------------------------------- + +This is a set of example captures from portable RFID copiers. + +Details: +http://www.ebay.com/itm/RFID-125KHz-EM4100-Card-Copier-Duplicator-5-Writable-Cards-5-Keyfobs-Tags-/151237092163?hash=item23366ee343:g:lNkAAOxyYSdTBrVN +http://www.ebay.com/itm/Handheld-Portable-125Khz-RFID-Duplicator-Copier-Writer-for-EM4100-T5577-Card-/191630611446?hash=item2c9e1313f6:g:D7UAAOSwyQtVo4pM +http://priority1design.com.au/t5557_rfid_transponder.html +http://www.atmel.com/Images/Atmel-9187-RFID-ATA5577C_Datasheet.pdf + + +Logic analyzer setup +-------------------- + +The logic analyzer used was a Saleae Logic 16 clone (at 2MHz): + + Probe T5557 write + ----------------------- + 1 RFID signal + + +Data +---- + +To transmit data to the tag you turn on and of the coil for x amount of +field clocks. This type of modulation is called OOK. + +The purpose of these RFID copiers are to read a generic EM4100 tag and +copy the tag data to another tag. To do that you need to configure the +destination tag and write specially formatted data in the tag banks. +Thus the signal contains 4-5 write packets. + diff --git a/rfid/t55xx/em4305_write.sr b/rfid/t55xx/em4305_write.sr new file mode 100644 index 0000000..7f22078 Binary files /dev/null and b/rfid/t55xx/em4305_write.sr differ diff --git a/rfid/t55xx/t5557_write.sr b/rfid/t55xx/t5557_write.sr new file mode 100644 index 0000000..2cb4bfa Binary files /dev/null and b/rfid/t55xx/t5557_write.sr differ -- cgit v1.2.3-54-g00ecf