mainGPSD - Support: sr #109095, rate configuration for uBlox


sr #109095: rate configuration for uBlox

Submitter:  None
Submitted:  Tue 19 Jul 2016 04:21:37 PM UTC
Category:  None Priority:  5 - Normal
Severity:  3 - Normal Status:  None
Privacy:  Public Assigned to:  None
Originator Email:  -email is unavailable- Open/Closed:  Open
Operating System:  GNU/Linux
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Tue 19 Jul 2016 04:21:37 PM UTC, original submission:  

I am running an u-Blox 8 based receiver from navilock (NL-8012U) with gpsd 3.16. While the receiver worked at first try fine out of the box I investigated a little issue setting the GPS's cycle time (gpsctl -c). Looking inti the code I found that the u-blox driver mixes endianess. Sending any changed value caused the receiver to respond very slowly. I attached a patch that should fix that issue. I also added a change that allows the receiver to accept rates up to 20Hz as this is specified in the documentation for the receiver as limit. I also changed the ACK/NACK prints as I found it very unhandy to reflect the ACK/NACK message class and IDs rather than the message the ACK/NACK refers to. Perhaps that would also be a valuable change to add.

Little things I investigated are related to documentation of gpsctl: It says that the -c option specifies the cycle time in seconds while I investigated that it takes the update rate. So giving a higher value increases the update rate for me. Also, the -c and -T  options are missing in the SYNOPSIS of the man page.



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Attach Files:

Attached Files
file #37951:  driver_ubx.patch added by None (2KiB - text/x-diff - The patch and an image of the receiver specification from the box.)


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    Follows 1 latest change.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-07-19 None Attached File- Added driver_ubx.patch, #37951

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