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atc1441 / ATC_MiThermometer

Custom firmware for the Xiaomi Thermometer LYWSD03MMC and Telink Flasher via USB to Serial converter
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Cannot re-connect after flashing custom firmware #70

Open elitehammer opened 3 years ago

elitehammer commented 3 years ago

I have successfully flashed custom firmware. Changed advertising type to Mi like Changed advertising interval to 5 minutes

Then proceeded to flash the second thermometer. After I was done with the second thermometer. I decided to switch off smiley and battery update on display on the first one. I can see ATC device when connecting via Telink flasher but logs s the following: ... Reconnect 1 of 5 NetworkError: connection failed for unknown Reason Reconnect 2 of 5 Detected custom firmware ...

I tried to activate thermometer via xiaomi home app but as I suspected activation also keept failing (my guess is due to custom firmware)

My question is will I be able to change those parameter via ESPhome?

atc1441 commented 3 years ago

Thats spund exactly like everything worked as expected.

The settings can only be set via the web flasher for now

jonastep commented 3 years ago

Hi,

As far as I understand that means that the flash was correct. What will be the next steps? Adding the device to Mi Home (I cannot find it in MI HOME) and then try to add it to Home assistant declaring "ble_monitor:" in the configuration.yaml ?

elitehammer commented 3 years ago

Thanks, @atc1441 for the reply. Any suggestions on how to get it connected back to the web flasher as mentioned in OP I keep getting the "connection failed" message?

atc1441 commented 3 years ago

I would suggest to try another device and reboot both beforehand

benleb commented 3 years ago

I have exactly the same issue :D At least from Chrome (via other tools, the device is discovered within seconds and connecting is no problem)

Arman-GeDon commented 3 years ago

I would suggest to try another device and reboot both beforehand

The same problem here. I uploaded the firmware a month ago to a fresh device with no problem. Today I wanted to connect again (https://atc1441.github.io/TelinkFlasher.html) but no avail. Tried two android smartphones with restart (one was the same as initial) and a PC with Windows 10, changed battery to a new one. The site can't connect and stuck on "Detected custom Firmware", however the bluetooth icon appears on the device No problem to connect to MHO-C401 or to a new LYWSD03MMC with original firmware. Log: 22:46:10: Searching for devices 22:46:27: Connecting to: ATC_169C19 22:46:37: Detected custom Firmware 23:05:51: Not connected 23:05:53: Disconnected. 23:05:53: Searching for devices 23:05:55: Connecting to: ATC_169C19 23:05:57: Disconnected. 23:05:57: NetworkError: GATT Server is disconnected. Cannot retrieve services. (Re)connect first with device.gatt.connect. 23:05:57: Reconnect 1 from 5 23:06:04: NetworkError: Connection failed for unknown reason. 23:06:04: Reconnect 2 from 5 23:06:12: NetworkError: Connection failed for unknown reason. 23:06:12: Reconnect 3 from 5 23:06:18: Detected custom Firmware

atc1441 commented 3 years ago

Hey. For me it looks exactly how it is supose to be. There should not happen anything after Detected custom firmware, you can now do some settings :)

What are you having problems with ?

Arman-GeDon commented 3 years ago

Thanks. I think there should be "Connected" at the end - that's what I have on MHO-C401 or on a new LYWSD03MMC with original firmware. Log then looks like these: 02:02:49: Searching for devices 02:02:52: Connecting to: LYWSD03MMC 02:02:54: Detected Mi Thermometer 02:02:54: Connected

But on the flashed LYWSD03MMC the log ends on "Detected custom Firmware". Then when click "Do Activation" there is "Not connected"

But I think I found solution: You have to click on some options (Smiley, LCD, advertising ) then connect again and device is connected (in the log) and you do activation. BTW: What advertising interval do you recommend?

atc1441 commented 3 years ago

You can of course not do an activation of the custom rom as it does not habe any encryption like the stock :)

The best interval is 1 minute as it does not drain the battery more and the you have the fastet update rate

Arman-GeDon commented 3 years ago

Ok, maybe my stupid mistake because it's late :) Thanks for help and thanks for your work!

gitkobold commented 3 years ago

Hi @atc1441 ,

Is it possible to flash the fw to the device with nrf Android app? (Is it used the a standard method?) Thanks

atc1441 commented 3 years ago

Hey. No the protocol is an Telink propriatary one, also the activation needs to be done before flashing ota

alexig89 commented 1 year ago

You can of course not do an activation of the custom rom as it does not habe any encryption like the stock :)

The best interval is 1 minute as it does not drain the battery more and the you have the fastet update rate

Hello and thank you for an answer - I tried to find it since yesterday :) But I have another question - how to add the sensor to Home Assistant if I haven't Mi Bind Key and my Mi thermometer has custom firmware?