add Baofeng UV-21Pro v2

[maximeguillaud]

Add support for Baofeng UV-21 Pro V2

[maximeguillaud]

Not sure if this fixes https://chirpmyradio.com/issues/10581 as I only have access to the v2 hardware.

[kk7ds]

I think we should just say UV-21Pro here. Since the bug you reference doesn't mention V2 but says that the existing UV-17Pro driver works, I think your concern over V1/V2 probably means that your driver will work for both. So yes, please also add the Fixes: tag to link/close that bug.

Also, I haven't eye-diffed this, but is this actually different from any of the above models? If so, then this looks okay, but if not, I think I'd prefer to just add an entry to the model_alias_map. There are so many total clones of the UV-17 that this file is starting to get littered with them :)

Thanks!

[maximeguillaud]

Hard for me to say if this differs from other models as I don't have access to all of them to test. In https://chirpmyradio.com/issues/10581 it is suggested to use the Baofeng UV-17Pro profile with the UV-21, however the UV-17Pro profile doesn't seem to support airband.
An alternative path to fix this would be to add airband to the UV-17Pro profile (which seems to support airband according to the specs I found online) and see whether it works with both UV-17Pro and UV-21; however in that case I would not be able to test with the UV-17Pro.

[kk7ds]

Okay so this looks identical to the above 5RH model with the exception of the power levels. Does the UV21 really only have hi/lo?

At the very least, please subclass that and just override the POWER_LEVELS bit so it's clear that it's otherwise identical.

[kk7ds]

Also looks maybe identical to the 17RPlus?

[maximeguillaud]

Indeed, the UV-17R-Plus profile seems to do the trick.

[kk7ds]

So should we replace this with just an update to chirp/share/model_alias_map.yaml ?