New V2.1 modules do not support 0.3k and 1k2

[OK2MOP]

Hello, this is not a bug in library itself, just a warning and maybe suggestion for enhancement (adding the check). The new V2.1 modules (PCB versions 10498-V1.1 and 10497-V1.0) delivered in December 2022 do not correctly set up speeds 0.3k and 1k2 and silently ignore the setting (they probably stay at the 2k4 speed). It seems the SX127x has been replaced by LLCC68 inside of them, which does not support spreading factors needed by these modes.

They can be identified by querying register 0x82 (C1 82 01), which returns 0x40 instead of 0x10 or 0x11 seen in previous versions

Older modules set to these speeds cannot communicate with the V2.1 ones on these speeds and vice versa.

[matthias-bs]

Hi,
Thank you very much for sharing this information.
Best regards,
Matthias