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chargemaster-protocol's Introduction

chargemaster-protocol

USB protocol of Chargemaster 2 compatible battery chargers

This Repository contains documentation and code generated from the reverse engineering process.

The goal of this work is to make battery chargers with SkyRC/Hitec Chargemaster 2 USB interface controllable without having to use the Windows GUI tool Chargemaster 2.

The code is written to interface to the charger on a linux system.

The documentation and code is not yet complete. Work is in progress. Contributions are welcome.

Currently the work is conducted with a Turnigy Accucell-6 80W battery charger (as this is the only charger available to the author). Please contact the author if you are capable of capturing USB data from other chargers, contributing to the repository or providing an untested charger.

Tested Chargers: -Turnigy Accucel-6 80W 10A Balancer/Charger LiHV Capable Product ID: 9052000071-0 (from HobbyKing Website)

chargemaster-protocol's People

Stargazers

karol avatar Mikhail avatar Valérianne avatar MrZajda avatar avatar Jack Kilian avatar Petr Michalec avatar avatar Karl Uibo avatar João Antônio Cardoso avatar james avatar Ivlev Denis avatar avatar Mitchell Artin avatar Matteo Bonora avatar

Watchers

Thomas Henauer avatar Miroslav Houdek avatar avatar avatar

Forkers

b38tn1k johnyjack dragocytus givetime

chargemaster-protocol's Issues

Transaction type decoding

Hey Thomas,
great work so far! Also having a SkyRc Charger I too thought about decoding that protocol.

Well, I think I've got news for you:
The byte before the End Sequence is the modulo 0x100 checksum of the data block, beginning at type, ending at length-1:
Example: 05-Transaction:

0000    0f  16  05  00  00  02  01  08  98  07  d0  0c  76  10  5e  00
0010    00  00  00  00  00  00  00  6f  ff  ff  00  00  00  00  00  00

(5 + 2 + 1 + 8 + 98 + 7 + d0 + c + 76 + 10 + 5e) mod 100 = 26f mod 100 = 6f (Tadaaa!)

I checked that for EVERY transaction you documented, so I think that's it.

Hope that helped!

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