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Update with protocol format

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Derek Jamison 2024-05-17 22:56:03 -05:00
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rfid/fsk-geo/readme.md
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@ -47,6 +47,15 @@ On the Flipper Zero, select `125 kHz RFID`, `Saved`, then select the file you cr
Reading a tag... Reading a tag...
On the Flipper Zero, select `125 kHz RFID`, `Read`. Place the tag against the back of the Flipper (or use another Flipper that is emulating the tag) and you should see the latitude and longitude displayed on the screen. On the Flipper Zero, select `125 kHz RFID`, `Read`. Place the tag against the back of the Flipper (or use another Flipper that is emulating the tag) and you should see the latitude and longitude displayed on the screen.
## Protocol format
- 125kHz, FSK2a, RF/50, FC/8, FC/10
- Preamble: 0xF337
- Data: 8 bytes (first 4 bytes are latitude, last 4 bytes are longitude)
- Checksum: XOR of the 8 bytes of data
NOTE: The 4-bytes are just float values that are cast to a 4-byte integer.
## Support ## Support
The best way to get support is to join the Flipper Zero Tutorials (Unofficial) Discord community. Here is a [Discord invite](https://discord.com/invite/NsjCvqwPAd) to join my `Flipper Zero Tutorials (Unofficial)` community. The best way to get support is to join the Flipper Zero Tutorials (Unofficial) Discord community. Here is a [Discord invite](https://discord.com/invite/NsjCvqwPAd) to join my `Flipper Zero Tutorials (Unofficial)` community.