From e3053c4d0d78fdc5b4ae8dc730f4dc70edcf3c20 Mon Sep 17 00:00:00 2001 From: Derek Jamison Date: Fri, 17 May 2024 22:56:03 -0500 Subject: [PATCH] Update with protocol format --- rfid/fsk-geo/readme.md | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/rfid/fsk-geo/readme.md b/rfid/fsk-geo/readme.md index 7760ce2..2a70a1c 100644 --- a/rfid/fsk-geo/readme.md +++ b/rfid/fsk-geo/readme.md @@ -47,6 +47,15 @@ On the Flipper Zero, select `125 kHz RFID`, `Saved`, then select the file you cr 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. +## 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 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.