Has anyone come across this board and managed to flash it over serial?
(I suspect someone has, since there’s an ESPHome template for it).
This board is inside a Mirabella Genio window/contact sensor.
It’s a Tuya-based XR3 module.
I’ve been racking my brain trying to flash this over serial with no success.
I’m using a USB to TTL device CP2102. It has light indicators next to its TX, RX, GND serials, and I can’t find a combination where both TX and RX are lit (which I suspect would mean they’re able to communicate with the board, I guess??)
I believe I’m meant to be using the 3V3 and GND pins on the bottom-right-hand side of the back of the board, and the RXD, TXD pins.
I get the following errors (during attempts at various pins)
Unexpected error: ESP chip Auto-Detection failed: Failed to connect to Espressif device: Invalid head of packet (0x00)
Unexpected error: could not open post 'COMS': PermissionError(13, 'A device attached to the system is not functioning.', None, 31)
Can anyone offer help here?
Otherwise, does anyone know another forum where I may have a better chance finding advice?
Thanks all