Add support for BL0942 to xnrg_14_bl09xx.ino

[barbudor]

Description:

Following #13190

Added support for BL0942 to `xnrg_14_bl09xx.ino"
Similar serial protocol but 23 bytes instead of 36. Requires a different paring function.
Refactor of the initialization code (write to device) in order to properly calculate checksum depending on chip address.

Checklist:

• The pull request is done against the latest development branch
• Only relevant files were touched
• Only one feature/fix was added per PR and the code change compiles without warnings
• The code change is tested and works with Tasmota core ESP8266 V.2.7.4.9
• The code change is tested and works with Tasmota core ESP32 V.1.0.7.4
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass

[arendst]

Thx. Will test asap.

I feel a lot of code size optimization using arrays coming along shortly... (change models to 0,1 and 2 and use as index for fixed values).

[arendst]

Merged and noticed broken BL0940 support on Blitzwolf SHP10.

Reverted the main file and I will investigate what went wrong here.

[arendst]

Ah. I love this message:

BL9: Checksum failurereceived 0x63 instead of 0x63

Will try to solve it now.

[arendst]

Fixed and released

[barbudor]

Thanks @arendst
I missed that