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✘Re: Sending commands to device while gpsd is running
From: |
Gary E. Miller |
Subject: |
✘Re: Sending commands to device while gpsd is running |
Date: |
Fri, 13 May 2022 19:55:48 -0700 |
Yo All!
I just pushed an update to gpsctl.
Up to now, gpsctl could be used to send a string to a GNSS receiver,
but only in low-level mode, not through a running gpsd.
That has been fixed. This will now request a UBX-MON-VER from
a u-blox device running under gpsd:
gpsctl -x '\xb5\x62\x0a\x04\x00\x00\x0e\x34'
Unlike with -f mode, you need to put the headers, checksum and suffix
in the request string.
Doc is updated to match.
Also, the gpsd_json man page now has an example of how to send
a control string using the gpsd JSON protocol:
?DEVICE={"path":"/dev/ttyUSB2","hexdata":"b5620a0400000e34"}
That is how zerk and ubxtool, and now gpsctl, do it.
This can, for example, be used to send a reset command to a TSIP device.
Both have been long requested. Check it out.
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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"If you can't measure it, you can't improve it." - Lord Kelvin
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