Merge/share with sensor.mitemp_bt lib

[ma-zal]

Hi. It can be great to consider the merge with project sensor.mitemp_bt. Or alternatively just to share knowledges between libraries.

Mentioned lib sensor.mitemp_bt:

• It is supporting more Xiaomi devices (in DEV branch yet).

• Is is reading data just by passive listening (without connection to devices).

• But it does not know, how to read some parameters (like battery or time).

[h4]

As I know it impossible to read battery/time info without direct connection to device. Will it be really helpful if it start use two different types of connection?

[ma-zal]

I agree with you @h4. For temp+hum data the passive listening should be used.

For battery/time the active connection should be used. Honestly the "time" info is not so important. I see the "battery" info as priority. This infomation can be readed in really long interval (like 1x per week), because of long battery life. So no need to update every 5 minutes. In this case the active connection 1x per week probably will not drain the battery.

It will be great, if you will describe this BLE communication in documentation. It can help others to understand it and implement it in another libraries.

[h4]

@ma-zal All communication with BLE is located in separate library. Look at https://github.com/h4/lywsd02, It there are not enough documentation I'll add it.

[ma-zal]

Thanks for link to library h4/lywsd02. I miss this dependency.