VESC - Flipsky 75100 V2 with Bafang Display and T15/T17 BB-Torque Sensor

[stuffman]

I had Gemini Deep Research AI-Generate this report on the display protocol. Seems to be useful:

Bafang Display Protocol

 

[stancecoke]

Seems to be useful:

This only describes the programming mode. That doesn't help, as we only need the normal working mode. But your first log will help, I'll take a deeper look at the weekend!

regards
stancecoke

 

[stancecoke]

but I also get Err 30

Which display are you using exactly?

I'll take a deeper look at the weekend!

Hm, your display sends a lot of unknown commands. We would need an original Bafang controller, to see, what is answered on this commands to emulate the "right" answers.

I tried to find the unkown commands somewhere, but I found nothing helpful, just a funny statement, that I can confirm

Controller just replies in weird ways... no checksum as far as I can tell, but either just the same value twice or with 0x20 added )

The most complete list of commands seems to be in the Bafang firmware of Daniel Nilsson.
Of course, we could try to answer with two times the (unknown) command, as this seems to be the expected answer often, but I can't test it, so it makes no sense for me.

Command	Number of messages sent	Meaning of the command
0x08	10​	CMD_PEDAL_MOV
0x0A	8​	CMD_AMPS
0x0B	8​	CMD_PAS_LEVEL
0x11	8​	CMD_BATT_SOC
0x1A	4​	BF_CMD_LIGHT
0x1F	4​	BF_CMD_WHEELDIAM
0x20	9​	CMD_WHEEL_RPM
0x21	8​	unknown
0x22	8​	OPCODE_BAFANG_DISPLAY_READ_RANGE
0x30	8​	unknown
0x31	8​	CMD_MOVING
0x60	2​	unknown
0x62	2​	unknown
0x63	2​	unknown
0x64	2​	unknown
0x65	2​	unknown
0x66	2​	unknown
0x67	2​	unknown
0x90	2​	CMD_VERSION