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author | Eric S. Raymond <esr@thyrsus.com> | 2014-05-21 06:50:05 -0400 |
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committer | Eric S. Raymond <esr@thyrsus.com> | 2014-05-21 06:50:05 -0400 |
commit | afee9fd8f7ed8507f009abecf4986d0d92fbb454 (patch) | |
tree | c5c90c9537659a6f91f8e086764374a443766587 | |
parent | 072d5920d4ddddd9bdc85b8628bf8dafaef4979e (diff) | |
download | gpsd-afee9fd8f7ed8507f009abecf4986d0d92fbb454.tar.gz |
Add a to-do item.
-rw-r--r-- | TODO | 16 |
1 files changed, 16 insertions, 0 deletions
@@ -101,6 +101,22 @@ We caw now *really* measure latency from GPS top of second when it has 1PPS. Add this capability to gpsprof and revise the "Where's the Latency?" white paper. +*** Low-pwer autoconfiguration in the uBlox driver *** + +Anthony Stirk <upuaut@gmail.com> writes on Wed May 21 06:09:00 2014: + + The low power modes are really good on the ublox modules (especially the + MAX7's) however a word of warning. + + We use the 1 sec cyclic mode on our balloon trackers but if the module + looses satellites or is jammed out (cheap Chinese cameras do it) the ublox + modules seem to hang and become unresponsive. To mitigate against this you + need to put the module back in max performance mode as soon as the + satellites drops below 4. + +A possibility: drop the chip to low-power modewhen it can see > 4 +sats, revert to normal otherwise. + *** Dispatcher/network issues **** Reading AISHub data via UDP confuses xgps with short writes |