Abdelrazak Younes wrote: > There is at least two that I know of, some ruby script: > http://docs.openmoko.org/trac/browser/developers/alphaone/u-blox > > And some python script in the FSO framwork. Look > "framework/subsystems/ogpsd/" > Cool. What's the requirements to get alphaone's ruby scripts working in OM2008.8? Aside from "opkg install ruby"... >> I'd like to see the freerunner's GPS do the same any other GPS device >> does: save the almanac/ephemeris data to storage upon shutdown and >> restore it upon powerup. > Right. I just receive my freerunner today. So I may start my own plan > this week :-) > > Excellent. :) >> So, I took the protocol datasheet >> (http://www.u-blox.com/customersupport/gps.g3/ANTARIS_Protocol_Specification(GPS.G3-X-03002).chm) >> and tried to coerce the chip into vomiting the stored information (we >> should take care to do it after working for at least 2 or 3 minutes with >> a good reception level). >> > > A better solution would be to just configure the Ublox to send the > ephemerises and almanacs as soon as they are received. I didn't know that was even possible... great! > A simple daemon > would watch for these messages and store them appropriately when they > are received. > > Makes sense. > Yes. The FSO is capable of doing that AFAIU. I have some code that do > that in C++ already, I'll publish them as soon as I port them to the FR. > My code will be able to read and decode a number of messages, including > raw data (pseudorange measurements). > > Wonderful. Just make sure you're not duplicating efforts with someone else... :) >> 2 - a simple hook into the UI gps on/off button script, forcing process >> (1) to ask for info and store it on file upon gps shutdown, and to >> rewrite that info into the chip on startup. >> > > I don't think we need any manual intervention here. The above described > daemon should just be reading only the device. Another program should be > responsible of writting the aid data as soon as the GPS is started. > Ideally this program could also be able to write manually encoded > messages based on commonly used formats for ephemerises (RINEX) and > almanacs (Yuma). > > >> Who's working on this? I'd happily beta-test it. >> > > I will, hopefully in the coming weeks :-) > > Fine. Keep us posted! > Abdel. > >
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