Waze can use 2 modes. "phone output or other" I tried them both, no real difference.
the /system/cksoft_ro folder has a lot of sound/mute settings. I think it's a setting somewhere in there. From what I've read, iGo is using/setting volume correctly.
---------- Post added at 01:57 PM ---------- Previous post was at 01:44 PM ----------
Regarding GPS performance:
I'm still not happy with my GPS performance so it did some digging.
It turns out that
1. our gps receiver can be set in a high gain mode. might improve snr ratios.
2. the sirf iv can be set in 5hz mode (needs baudrate of 112k)
3. ephemeris data is download from parrot, but this happens rarely
Now looking into the build.prop I see the following:
Code:
#GPS
ro.parrot.gps.baud=57600
#protocol is binary or nmea
ro.parrot.gps.protocol=binary
#extended ephemeris validity (around 10Ko per day) choose between: 1/3/7/14 days
ro.parrot.gps.nbday_ee=14
ro.parrot.gps.date_auto=0
ro.parrot.gps.time_auto=0
ro.parrot.gps.time_send=2
ro.parrot.gps.static_nav=1
# Dead Reckoning timeout
ro.parrot.gps.dr_timeout=5
# persist.sys.parrot.gps.ppsout : 1 = pps out enabled (default), 0 = disabled
persist.sys.parrot.gps.ppsout = 1
# ro.parrot.gps.lowgain : 0 high gain (default), 1 activate low gain
ro.parrot.gps.lowgain = 1
We can control the baud rate, gps gain (lowgain setting !), and ephemeris data.
Normally ephemeris is only valid for up to 4 hours. Wondering why parrot will force us to use 14 days old data.
But the lowgain setting looks tempting
I need to figure out what the time settings are as timing is crucial for accurate fix.
The GPS refresh rate can be set in property folder.
[edit] dit some more digging. low gain is ideal for active antenna, and high gain is ideal for passive antenna.
The Volvo antenna is probably an active antenna.