Yo hans!
On Thu, 06 Aug 2015 22:16:13 +0200
hans mayer <address@hidden> wrote:
> OK. Be aware that driver can only use one edge...
I know. Actually it didn't work on a Banana PI at all.
With Bananian Linux! version: 15.04 - kernel 3.4.108+
It only worked on Raspberry PI.
I had to add this patch https://github.com/infinet/bananapi
And I do not know how to use the other edge - and how ?
I don't need it.
So it's not an issue for me (currently).
That patch is for kernel 3.4. Get a newer kernel, which already has the patch.
> Yes, because you have not told gpsd how to access the /dev/pps0,
How can I ?
Details are in gpsd time service howto.
> How are you starting gpsd?
/usr/local/sbin/gpsd -n -F /var/run/gpsd.sock -P /var/run/gpsd.pid
/dev/ttyS2
add /dev/pps0 to the end of that. Then gpsd opens it.
> You are starting gpsd as root, right?
Yes, of course.
Good.
> What are the permissions on your /dev/pps0?
Original - after a boot - it is this:
crw------- 1 root root 242, 0 Aug 6 14:09 /dev/pps0
and I also changed group and permissions
crw-rw---- 1 root dialout 242, 0 Aug 6 14:09 /dev/pps0
no change in the behaviour
Since you are starting as root, and you did not have /dev/pps0 on your
command line, neither would work. And when in doulbe just make it
666 for testing. That eliminates a lot of confusion.
I started gpsd in debug mode
/usr/local/sbin/gpsd -n -N -F /var/run/gpsd.sock -D 4 /dev/ttyS2
I do not know why I hadn't this idea earlier. :-(
And I have seen it creates it's own /dev/pps1
Of course, attached to /dedv/ttyS2, which is not what you want
because your PPS is no on ttyS2 but on the gpio.
Of course it runs into a time-out if it does not use the one
provided from the system.
Attached the debug trace of some seconds running gpsd with -D 5.
This rises the question why is it creating pps1 instead
of using pps0 ?
Because any sane hardware does not use GPIO for things that are
related to the serial port.
> You can not have followed the time service howto and used
> rpi_gpio_ntp at the same time.
You are completely right.
But you can imagine I walked a stony way. As I said:
Keep reading it, you keep mising things that are in there.
>> And I run the NTP configuration you mentioned in this doc.
Because of the fact that gpsd is currently not doing as I expect
Nor will gpsd do as you expect going the way you are going.
I was happy to bring it up and running with "rpi_gpio_ntp"
in the first attempt.
Yes, nice for testing, nothing more.
But in any case. Your page is a big help if one carries together
all these puzzle stones of a new big puzzle.
Oh, and you also read the Raspi section in the INSTALL file?
I am looking forward to find a solution.
Do it by the gpsd doc, and it will work fine.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
address@hidden Tel:+1(541)382-8588
gps_trace.txt