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From: | Jorick Astrego |
Subject: | Re: [gpsd-users] issues with u-blox m8l ADR |
Date: | Mon, 25 Apr 2016 09:52:52 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.7.1 |
On 04/24/2016 06:36 PM, Gary E. Miller
wrote:
Yo Gary! :-)Yo Jorick! On Sun, 24 Apr 2016 13:51:00 +0200 Jorick Astrego <address@hidden> wrote: I have been looking at that and I guess I need to modify the "ubx_msg_nav_sol" part?The M8L supports the "UBX-NAV-HNR (0x01 0x37) High Rate Output of PVT Solution", but gpsd only outputs at the normal rate. I could add it to the code base but don't have a good feel on where all the places are I need to make changes. I added the message to driver_ubx.h but it feels a bit to easy ;-)Take a look at driver_ubx.c If you have the spec for that message send it to this list, plus some output from the GPS that has the message in it. Say maybe a minute of raw data. Sending the spec and raw output is a bit of a problem as we got the ProtocolSpec under NDA from u-blox. I will first have to contact them as it's not yet in the public domain :-( The second problem we have is that gpsd has the fix as 2D. This way I cannot get the altitude that we need. 2D should be fine and there is an elevation output in the tracklog .... but not in the gpsd output. Any idea how I can get the elevation with the c++ client?If it is only a 2D fix, then you are not supposed to use the altitude. Some GPS output crazy data when the invalid flag is set. It is a valid 3d fix in my opinion, I will try what happens after I modify the code below to MODE_3D as we really need the altitude for our project and from what I see from the elevation output it's nice and stable and very much more correct then the normal 3D gps altitude. from "driver_ubx.h" RGDS GARY --------------------------------------------------------------------------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 address@hidden Tel:+1 541 382 8588 Met vriendelijke groet, With kind regards, Jorick Astrego Netbulae Virtualization Experts
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