Re: Can you prevent mode switching?

[Thomas Beierlein]

Am Thu, 28 Oct 2021 10:22:13 +0800
schrieb Onno VK6FLAB <cq@vk6flab.com>:

> The mode change is still being populated on band change, even if I
> comment out the band-change rig_set_mode call at the bottom of
> src/gettxinfo.c.
> 
The change mode happens actually in handle_trx_bandswitch in gettxinfo.c
It is called in the same file around line 205. Just comment the call
out. That should help.

> I suspect that the mode change is secretly being sent with the
> frequency change and have been trying to investigate filtering out
> mode changes in the TCP connection to rigctld, but that's a two-way
> stream and using grep/sed on a bidirectional stream is a challenge :-)
> 
No. The frequency change is sent separately. But in the next frequency
reading cycle TLF sees the change in band (bandinx != oldbandinx) and
triggers the mode switch.


In the long term I see two ways to handle it:

- Add a new keyword as suggested above.
- On bandswitch record not only the old frequency but also the mode. So
  TLF may start with turning the rig to CW on first start but remember
  later any changes made directly at the trx.

73, de Tom

> I agree that it needs a config option. I think it should be called
> something like IGNORE_RADIO_MODE to make it explicit.
> 
> o
> 
> On Thu, 28 Oct 2021 at 10:00, Nate Bargmann <n0nb@n0nb.us> wrote:
> 
> > * On 2021 27 Oct 18:23 -0500, Onno VK6FLAB wrote:  
> > > I've just removed (commented out) all rig_set_mode calls in  
> > src/gettxinfo.c  
> > > and the behaviour persists. Not sure where else to look.  
> >
> > Hi Onno,
> >
> > Follow the logic from the parsing of logcfg.dat with the SSBMODE and
> > RTTYMODE keywords.  That should lead you to where the mode is set on
> > startup, at least.
> >  
> > > I agree with Nate, TLF should follow the mode, not set it unless
> > > specifically instructed to do so.  
> >
> > I'm sure some prefer the current behavior (working a single mode
> > event, I can see this preference and would likely use it).  I'd
> > like to see a similar keyword, perhaps RIGMODE is to close to the
> > existing RIGMODEL keyword, maybe FOLLOW_MODE would work, that could
> > be added for Tlf following the radio mode until instructed to
> > change mode.
> >
> > 73, Nate
> >
> > --
> > "The optimist proclaims that we live in the best of all
> > possible worlds.  The pessimist fears this is true."
> > Web: https://www.n0nb.us
> > Projects: https://github.com/N0NB
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> >
> >  
> 



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"Do what is needful!"
Ursula LeGuin: Earthsea
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