unruh wrote:
On 2011-04-07, Uwe Klein<u...@klein-habertwedt.de> wrote:
unruh wrote:
Somewhat more awkward than Terje's program, but it works.
I've collected a bit of information
http://wiederlinge.de/cgi-bin/lnwiki.cgi/147
and wrote a basic parser script:
http://wiederlinge.de/cgi-bin/lnwiki.cgi/150
Terje added some info too.
I will add the commands stuff to my script
in ~10days. no time now.
Feel free to add.
Actually a more complete set of instructions that can be sent under the
MTK protocol is in
gpsd.googlecode.com/files/MTK_NMEA_Packet_0.71_Sanav.pdf
Thanks!
I of course have no idea which of these are actually valid for the
particular chipset that the Sure board uses.
This list includes the command 251($PMTK251) --change serial bitrate command,
This is the one I got by reverse engineering (sniffing) the java
program, nice to see it documented.
missing from the ETEK list. It also includes a rich set of Datum for the
models used.
I do not know if the Sure can be changed from the WGS1984 Datum, in case
anyone might want to use, for example, number 147 -- Old Egyptian(1907)
datum instead.
I have tested and verified that at least my Sure board does not allow me
to ask for most of the 19 NMEA sentences listed in the 314 command:
Turning on all actually resulted in 5 or 6.
I'll try again after first setting the board to 38400 baud. (Maybe it
only allows those sentences that actually fit inside the output window?)
The 590 returns the flash information, I suspect that this means that
there is also a 390 to program it (including baud rate) and a 490 to
query the current flash status, giving the 590 info as a response.
Terje
--
- <Terje.Mathisen at tmsw.no>
"almost all programming can be viewed as an exercise in caching"
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