Trying to talk to M18 with ESP32 UART

[nkskjames]

I'm trying to communicate with M18 using ESP32 UART so I can have a standalone/wifi and app interfaced battery checker. I cannot get a response from the 0xAA hello command. I suspect it has to do with the way the ESP32 implemented the break. The ESP32 does not have a way to just put UART controller in break mode. It only has an API to to a break after a write for a time period.

I have looked through the various videos from @Tool-Scientist and cannot find a basic UART trace of the opening sequence. Does anyone have that?