Allows an ATtiny85 to emulate the phase-shift keying modulation required by Indala format RFID devices.
Use the Flipper Zero to read the RFID device. This will result in a four byte code that represents the encoded RFID value.
Generate from assembly source:
Edit FLIPPER_CODE with the value from from the flipper zero
avr-gcc -mmcu=attiny85 indala.S -o indala.elf
avr-objcopy -O binary indala.elf indala.bin
Generate from C code:
Edit FLIPPER_CODE with the value from from the flipper zero
gcc indala.c -o indala
./indala
Credits:
https://scanlime.org/2008/09/using-an-avr-as-an-rfid-tag/
https://github.com/rgerganov/ggtag
Tested with a GGtag:
https://www.crowdsupply.com/eurolan-ltd/ggtag
https://www.mouser.com/ProductDetail/Eurolan/GGTAG-01