Icom users, who use the K9JM CI-V router to protect their PW-1
amplifiers from damage due to Icom's broken CI-V protocol handling,
require a 1s delay after opening the serial port. This is due to the
router using an Arduino & Arduino USB adapter that employs a
bootloader which holds the RS-232 interface for 1s after reset (DTR
releases reset). Hamlib already has a retry and timeout mechanism
which was set to 3 and 200ms respectively for most Icom rigs. This
change increses that timeout to 1s. The increaased timeout will have
little or no impact on clients as it only comes into play if there is
a problem.
With Icom rigs that use MAIN?SUB VFOs there is a trade off when
setting the mode or frequency of the "other" VFO. Untill now Hamlib
uses the XCHG VFO command to address the "other" VFO. This has some
advantages, particularly it preserves the selected VFO and it
preserves memory mode of either VFO. The disadvantage is that any
split command causes the Rx to glitch when the VFO/MEMs are exchanged.
I have added a config parameter for Icom rigs called "no_xchg" which
forces the direct addressing of VFOs to set split mode/frequency. It
is a boolean option with a default of "0" (false) which equates to
prior behaviour. Setting it to "1" (true) will make the backend use
change VFO commands to set the "other" VFO. This means that TX on
"SUB" in split is assumed, that both are in VFO mode (not MEM), and
set/get split functions will leave the MAIN VFO selected.
* The 746 has an APF, wasn't in its configuration, added, tested, works.
* The 756Pro has an ANF function, wasn't in its configuration, added,
tested, works.
* The 756Pro's signal strength conversion table was way wrong.
I noticed this while making scope plots in my program JRX --
the strong signals using the STRENGTH output would all flatten
out at a rather low level, but the RAWSTR output showed the
full range. Changed the conversion table, tested, fixed.
R8500 notes:
The R8500 on/off functions work differently than the other Icoms,
in fact it's not too strong to say that this radio is a breed apart.
Most Icom radios have a group command code for on/off functions (16),
then a code for the function, then a flag for on or off. The R8500
combines the second and third into one, and this required a bit of
recoding in "icom.c". Interestingly, someone had created some special
designators in "icom_defs.h" for the R8500, but then never coded them
to the degree that they worked. Now they work. :)
So the AGC, NB and APF functions all work now.
The R8500 doesn't have a preamp control, so I took that out.
The R8500 does have IF shift and a 3-step attenuater, so I put those in.
Signed-off-by: Nate Bargmann <n0nb@n0nb.us>
Bill Somerville