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Re: Question about using GPSd & ubxtool for ADR implmentation
From: |
Gary E. Miller |
Subject: |
Re: Question about using GPSd & ubxtool for ADR implmentation |
Date: |
Mon, 6 Dec 2021 11:46:13 -0800 |
Yo Aaron!
On Mon, 6 Dec 2021 18:19:12 +0000
Aaron Wheeler <aaron.wheeler@vontas.com> wrote:
> We have an application where we want to use the u-blox ADR module
> in ADR mode.
Good luck with that. ADR mode is a PITA.
> For this application, we want to feed the receiver
> vehicle speed information using the ESF-MEAS message.
I'm confused. You are sending data TO the receiver? That is not how
ESF-MEAS works.
> To accomplish
> this, we would need to send a CFG-ESFWT message for configuration,
> followed by a periodic ESF-MEAS message, containing the vehicle
> speed.
That is what the wheel-tick is for.
> We have investigated ubxtool and its messages for a possible
> solution, but it seems that ubxtool is mostly for enabling output
> messages from receiver.
Sort of. You can send anything you want to the receiver using ubxtool.
Just a little harder for some things as you have to construct the
binary message.
But, if you are trying to do what I think you are, there is no message
to do that.
> Is there the ability to use ubxtool to send down the CFG-ESFTW &
> ESF-MEAS messages, at rates of at least 10Hz?
ESF-MEAS comes from the receiver. You can not send data to the
receiver.
Being u-blox, there may be some secret mode that does that, but I
see nothing about that in their doc.
> In GPSd, I do see the ability to send messages to the GPSd daemon.
gpsctl and ubxtool do that. Or just code you own client.
> Barring an implementation in ubxtool, is there a GPSd message that
> could be used to send a serial data packet down to a receiver, to
> implement such a design?
gpsctl and ubxtool do that. Or just code you own client.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
gem@rellim.com Tel:+1 541 382 8588
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