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pvvx / ATC_MiThermometer

Custom firmware for the Xiaomi Thermometers and Telink Flasher
https://github.com/pvvx/pvvx.github.io/tree/master/ATC_MiThermometer
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Telink Flasher v7.7 connecting to LYWSD03MMC crashes Chrome on Android 14 #498

Closed ievren closed 3 months ago

ievren commented 3 months ago

Hi @pvvx thank you for your great work and optimisations and documentation.

Tried to use Android phone and connecting to a LYWSD03MMC will crash my chrome browser(Version 123.0.6312.41) on Android 14. I also tried to use vivaldi with the same behaviour that as soon the Bluetooth logo appears on the LYW... the browser on the phone crashes...

I just noticed that when I try to connect with a laptop chrome (ubuntu) I managed to connect to it once and flashed it with the atc firmware: Status: Hardware Version: LYWSD03MMC B1.4, Software Version: 4.6

Then I lost the connection tried to connect with the laptop again using chrome I was not able to connect.(So I assume my laptop has some issues)

I tried with another phone using android 13 (chrome browser(Version 123.0.6312.41)) and I was able to connect :)

Status: Hardware Version: LYWSD03MMC B1.4, Software Version: 4.3 Vbat: 2985 mV , Temp: 24.27°C, Humi: 55.84%, ID: 14, Reed switch counter: 0, flg: 0x04:r0/t0

So this is probably more a android bug using BLE connection, maybe? But maybe someone will have same issue... Screenshot_20240328-153915

pvvx commented 3 months ago

Chrome (ubuntu)

README:
5. On Linux, when installing large advertising intervals, change the file '/etc/bluetooth/main.conf', variables: LEScanIntervalAutoConnect= LEScanWindowAutoConnect=. Value in ms.

ievren commented 3 months ago

Thank you.

Yes adding /etc/bluetooth/main.conf works now to connect with the linux laptop.

LEScanIntervalAutoConnect=2500 
LEScanWindowAutoConnect=1000

I am not able to use it with android 14 + chrome ( 123.0.6312.41) ... But there are these workaround which are ok for me laptop or android 13 are working perfectly :)

Maybe #459 is duplicate of this. But @Robert-Versteegen is using win11. And no info about which android...

pvvx commented 3 months ago

LEScanIntervalAutoConnect=2500 LEScanWindowAutoConnect=1000

To comply with the Bluetooth specification, these parameters must use a period of up to 10 seconds. But if there is a loss of reception (collisions on the radio), then the value will be increased by 2. That is, from 20 seconds.