The problem with the NEO-6M is that raw messages are disabled by default so there is no explicit way to activate the RXM RAW & RXM SFRB messages in the normal manner in U-Center. This is why you have to send a custom message to modify the firmware that resides in volatile memory. I don't think a battery backup will help the because the firmware will be reloaded from ROM when the chip reboots and the raw messages will be turned back off. I am not 100% sure though, and this should be tested.
Scott On Wed, Apr 30, 2014 at 1:59 PM, Josh Leighton <[email protected]> wrote: > You should also be able to provide a startup message for RTKLIB to send to > the receiver. I use it with str2str and if I recall rtkrcv / RKNAVI support > it as well. For ublox it looks like: > > !UBX CFG-RATE 1000 1 1 # set update period in milliseconds > !UBX CFG-MSG 2 17 0 0 0 1 # RXM RAW - required for rtklib > !UBX CFG-MSG 2 16 0 0 0 1 # RXM SFRB - recommended for rtklib > !UBX CFG-MSG 240 0 0 0 0 1 # NMEA GGA > !UBX CFG-MSG 240 1 0 0 0 0 # NMEA GLL > !UBX CFG-MSG 240 2 0 0 0 0 # NMEA GSA > !UBX CFG-MSG 240 3 0 0 0 0 # NMEA GSV > !UBX CFG-MSG 240 4 0 0 0 1 # NMEA RMC > !UBX CFG-MSG 240 5 0 0 0 0 # NMEA VTG > !UBX CFG-MSG 240 8 0 0 0 0 # NMEA ZDA > > The first two numbers of each CFG-MSG line define the message, and the > following 4 0s and 1s turn that message on and off for different interfaces > (usb, serial, etc) > > -Josh > > > On Wed, Apr 30, 2014 at 1:46 PM, Danny Miller <[email protected]> wrote: >> >> Be sure to increase your serial port baud rate. >> >> There's MUCH longer packets, and more of them, than data than NMEA fixes. >> In my experience if there's too much data it just overruns the buffer and >> data gets lost. The link is full of errors and the fix disappears. >> >> It may appear fine early on after power-up. But as more satellites get >> added, the data gets longer and longer, and you may oddly lose the fix as it >> becomes "good". >> >> You can also disable data you don't need to keep the link bandwidth down. >> >> The graphical interface of U-Center allows you to turn on/off msg types >> for each port. It'll be saved if you have a battery on the GPS, which you >> should to maintain the RTC. >> >> Danny >> >> >> On 4/30/2014 12:16 PM, Scott Harrison wrote: >>> >>> Leor, >>> >>> You have to go into U-Center and enter the following custom message: >>> >>> to enable RXM-RAW >>> >>> b5 62 09 01 10 00 c8 16 00 00 00 00 00 00 97 69 21 00 00 00 02 10 2b 22 >>> >>> to enable RXM-SFRB >>> >>> b5 62 09 01 10 00 0c 19 00 00 00 00 00 00 83 69 21 00 00 00 02 11 5f f0 >>> >>> This will turn on the raw data you need, but it is stored in RAM so >>> you will need to resend the codes every time you power up. >>> >>> Also, set your type to PPP and then you should start to see sub-meter >>> accuracy with RTKLib. >>> >>> see http://wiki.openstreetmap.org/wiki/RTKLIB >>> >>> >>> Scott >>> >>> On Wed, Apr 30, 2014 at 7:56 AM, vbenso <[email protected]> wrote: >>>> >>>> Leor, >>>> >>>> It's been a long time since I don't touch my GPS hardware, so I could be >>>> wrong. That being said. >>>> As far as I remember, rtklib needs more information than just >>>> UBX-RXM-RAW in >>>> order to obtain an accurate fix. The neo6m should send another message >>>> (maybe RXM-SFRB?) that I wasn't able to get from the receiver. >>>> I could get ordinary gps precision in static and single modes of rtklib. >>>> Good luck, and in case of any development let me know. >>>> >>>> >>>> Victor A. P. Benso >>>> Sementes Benso >>>> Major Vieira - SC >>>> (47) 9922-9599 >>>> (47) 3655-1192 >>>> >>>> >>>> On Mon, Apr 28, 2014 at 4:49 PM, leor [via Open Source GPS-related >>>> discussion and support] <[hidden email]> wrote: >>>>> >>>>> I got 2 CN-06 (neo6m) recievers to output into RTKlib both over serial >>>>> COM. Problem is that I have not been able to get a fix and always get a >>>>> single status. Also whenever I choose static it seems to change >>>>> everytime I >>>>> start it. Using dgps and kinematic gives me an accuraccy of around 50m. >>>>> I >>>>> have tested this indoors and managed to get RAW data. Any idea how it >>>>> would >>>>> perform outdoors? I am trying to collect data to creat GCP for use in >>>>> ortho >>>>> correction >>>>> [IMG]http://i.imgur.com/kj3Z5IV.jpg[/IMG] >>>>> >>>>> >>>>> Great info you guys have. I got it to work but I am not sure what kind >>>>> of >>>>> accuracy I will be getting >>>>> >>>>> ________________________________ >>>>> If you reply to this email, your message will be added to the >>>>> discussion >>>>> below: >>>>> >>>>> >>>>> http://open-source-gps-related-discussion-and-support.1099874.n2.nabble.com/Raw-Data-from-NEO-6M-tp7572786p7572854.html >>>>> To unsubscribe from Raw Data from NEO-6M, click here. >>>>> NAML >>>> >>>> >>>> >>>> ________________________________ >>>> View this message in context: Re: Raw Data from NEO-6M >>>> Sent from the Open Source GPS-related discussion and support mailing >>>> list >>>> archive at Nabble.com. >>>> >>>> _______________________________________________ >>>> This message is sent to you from [email protected] mailing list. >>>> Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your >>>> subscription >>>> For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS >>> >>> _______________________________________________ >>> This message is sent to you from [email protected] mailing list. >>> Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your >>> subscription >>> For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS >>> >> >> _______________________________________________ >> This message is sent to you from [email protected] mailing list. >> Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your >> subscription >> For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS > > > > _______________________________________________ > This message is sent to you from [email protected] mailing list. > Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your > subscription > For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS _______________________________________________ This message is sent to you from [email protected] mailing list. 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