[chirp_devel] issue #967 - add aprs beacon and message parsing

[Angus Ainslie]

On 2014-12-29 13:07, Robert Terzi wrote:
> I don't have an FT1D to test with only a VX-8DR, but I would be
> interested to see if these bits can be back ported to the VX-8(D).
> 

For the most part I tried to keep the names of the structure members the 
same even if I juggled the order so my changes "should" work with the 
VX-8 driver.

> One hitch is that the memory layout for the APRS data is different
> on the original non-D VX-8, and the D version (VX-8D[RE]) due
> to storing 50 beacons vs. 40.  It looks like the FT1D stores 60
> beacons so it will also be different.  It's been a while since I looked
> but I think the reason I didn't try to add the APRS beacons/messages
> to the memory structure definitions was not knowing how to handle
> the layout differences between the non-D and D in the same driver.
> 

There is some code in the VX-8 driver to account for the varied number 
of records that I partially pulled into the FT1D driver. I didn't 
understand the code well enough to add an additional offset for the APRS 
messages.

What I did find was the layout of each record differed slightly in the 
FT1d from what was in the VX-8D.