Seplos v2 loosing protocol sync due to BT adapter messages

[patman15]

home-assistant_bms_ble_2025-02-13T10-56-41.481Z.log

Originally posted by @bogi9999 in #171

Data disappears and comes back

[patman15]

@bogi9999 I checked the log, the problem is basically, that the BT adapter of the BMS messes up the BMS messages with it's own messages (AT+...). That results in corrupted data which is discarded. The only way to fix that is to disable the BT adapter messages. Not sure this can be done and how.
Does the app work 24/7?
Can you capture the Bluetooth traffic on Android or iOS while starting up the Seplos app with the battery? Maybe I can find some command disabling the AT commands.

[bogi9999]

Sorry, i don't know if the app work 24/7, because i do not sitt 24/7 in front of the battery. ;)
If i can capture, i first have to check if there is a tool for that available.

[patman15]

If i can capture, i first have to check if there is a tool for that available.

I linked you two for Android and iOS 😉

[bogi9999]

Hope this is what you need.

SeplosV2.log

[patman15]

Thanks, checked. The AT+ replies are also in there. I could see incorrect replies, although the command was not in the middle of some data. I guess with a longer recording we could see that as well.
I'm not 100% sure but I fear the behavior is simply bad design of the BT setup and unavoidable.