Re: [gpsd-users] Where should I start from?

[Gary E. Miller]

Yo raaj!

On Wed, 2 Oct 2019 15:28:42 +0800
raaj lokanathan <address@hidden> wrote:

> A quick question.

Looks like several.

> Does gpsd supports RTK and DR?

For some definition of "support".

> Does the gpsd aligns the time stamp for the messages?

Nope.  gpsd reports what the GNSS receiver reports to it.

> Does gpsd allows to choose which satellite?

No, sat choosing is done in the GNSS receiver.  But your GNSS receiver may.

> Does gpsd provides power handling such as low power mode?

Nope.  gpsd works best when the GNSS receiver is on constantly.  Your
main power consumption will be the other services that your distro is
running.  Full gpsd usage an a Raspberry Pi is only about 3% of one CPU.

If that 3% is a big deal, then only run gpsd on demand, but you will
have long waits for cold start.

The GNSS receiver power is quite small already.  If power is really 
a concern, like wildlife trackers, then best to use your GNSS receiver
logging modes and leave the CPU off.

> Does gpsd supports i/o message Authentication?

Nope.  On what path would you want it?

RGDS
GARY
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