Add HVUPDI_SUPPORT list for programmers.

[janegilruud]

Tried to implement a way to list which UPDI HV variants the different programmers support.

[MCUdude]

Thanks for the PR!

It seems like there's an issue with the parser though. I'm getting the following error:

$ ./avrdude -cpickit4_updi -pattiny1616 
avrdude: error at /Users/hans/Downloads/avrdude/src/avrdude.conf:399: syntax error
avrdude: error reading system wide configuration file "/Users/hans/Downloads/avrdude/src/avrdude.conf"

(avrdude.conf line 399)

  usbproduct = "";

BTW, for backward compatibility with older avrdude.conf files, is hvupdi_support optional?

[janegilruud]

Darn. I'm in no way an expert on this.

My intention was to make it optional. Avrdude should work fine with an avrdude.conf without hvupdi_support, except for HV UPDI. The need for an avrdude.conf with hvupdi_support to do HV UPDI I'd call a safety feature. Intentions and actual result might differ at the moment.

[MCUdude]

The problem now is that I can't get Avrdude to accept the avrdude.conf file regardless if hvupdi_support is present or not...

But thanks for spending your time on this. I appreciate it!

[janegilruud]

First, I have put hvupdi_support in the prog_parm_usb section, which it why it fails on line 399 which is a usb parameter. Secondly I probably haven't managed to make it optional yet...

[janegilruud]

Working better now. Hadn't initialized the list.

[MCUdude]

Thanks for going through the code once again and resolving the issue, It seems to work fine now. Tested with a PK4, SNAP, and Xplained Nano UPDI.