[chirp_devel] Request Guidance to Add CHIRP Support for the Baofeng UV-5RAX 150/220 MHz Radio

[Jim Unroe]

Hi Group,

I've been trying to figure out the best way to add CHIRP support for the
Baofeng UV-5RAX dual-band radios that cover 136-174 MHz and 220-260 MHz.

I have been thinking that I just need a way to figure out a way to detect
if the radio is a VHF/UHF model or a VHF/220 model and then use that to
select between the following rf.valid_bands.

  rf.valid_bands = [(136000000, 174000000), (400000000, 520000000)] #
VHF/UHF

  rf.valid_bands = [(136000000, 174000000), (220000000, 260000000)] #
VHF/VHF220

I think I have a way to detect the difference. Below are the 1st 16 bytes
of Baofeng UV-5R radios. The BFB231 is representative of firmware version
BFB230 through BFB281 where the firmware verson was identified.

BFB231 (136-174/400-520)
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
AA 42 46[42]32 33 31 DD 00 25 60 13 00 25 60 13  ªBFB231Ý.%`..%`.

The BFB291 is representative of firmware versions BFB291 and later. The
format was revised to contain the lower and upper limits of each band.

BFB291 (136-174/400-520)
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
AA 36 74[04]00 05 20 DD 00 25 60 13 00 25 60 13  ª6t... Ý.%`..%`.

The BFB296 is representative of firmware versions from a VHF/220 radio.

BFB296 (136-174/220-260)
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
AA 36 74[02]20 02 60 DD FF FF FF FF FF FF FF FF  ª6t. .`Ýÿÿÿÿÿÿÿÿ

Note the byte that I have surrounded with square brackets. On firmware
BFB290 and lower, this will always be '42'. On firmware for a VHF/UHF
radio, this will always be '04' or '05'. And finally on a VHF/220 radio
this will always be '02'.

So if some way byte 0x0003 could be read so that rf.valid_bands can be set
to

  rf.valid_bands = [(136000000, 174000000), (400000000, 520000000)]

except when 0x0003=02 then it would be set to

  rf.valid_bands = [(136000000, 174000000), (220000000, 260000000)]

Does this make sense? How would I go about it? is there a better way?

It was discussed that the VHF/220 radio could be handled as a different
Baofeng model. I guess I'm not opposed to that if that is what the
consensus is. How would that be done?

Thanks in advance.

Jim KC9HI
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://intrepid.danplanet.com/pipermail/chirp_devel/attachments/20130502/a63e6c0b/attachment-0001.html