I’m working with BC118 module and first I was developing with BC118 Discovery Kit that has V3.4 of MelodySmart, and it was accepting commands normally.
Now I am with my own PCB and the MelodySmart has the version v4.0. In this stack I always receive ERR when I send any command (set BOND=ON for example).
I can get status, verify the version, reset.
Another thing is that when I connect the MelodySmart App I’m unable to exchange data in the v4.0.
I have looked the updates in v4.0 and the schematics and everything is ok, is there anything different that I need to take care? About pins, initialization…