GPS on Linux

Products Support DragonBoard410c
#1

Hi
Is there any command that I can use to turn off/on, and read from GPS in linux? I am using Linaro/Debian linux from here: https://github.com/96boards/documentation/wiki/Dragonboard-410c-Installation-Guide-for-Linux-and-Android

Thanks

#2

Hi amati,

In an upcoming Linaro release there will be initial support for getting gps data through gpsd, but for now this is unfortunately not available.

Regards,
Bjorn

#3

Came across these two packages

gnss-gpsd - QCOM GPS integration to GPSD
qmi-gps-proxy - QCOM GPS proxy daemon.

And also there was a sys class entry here
/sys/class/gps_proxy_class/gps_proxy_ch/

Is this some info that can be used to interact with the GPS chipset?

#4

hi,

the last release, done in June, has GPS integrated. Most of the GPS s/w stack runs on the DSP, not on the main ARM core. And there is a small wrapper on the ARM core that bridges the GPS data from the DSP into a tty device. we also provide a couple of init script to integrate the wrapper into gpsd.

the release note for the June release have a few additional details about how to get started with the GPS. These 2 packages contains the necessary user space wrapper and init scripts. Note that you will also need to run the most recent 4.4 based kernel.

#5

Thanks for the update. I did note these packages gpsd. Any pointer or documentation for the mentioned wrapper will be helpful.

#6

I too am interested in accessing the GPS. I can start the DSP and telnet to 2947 to interface with gpsd and I can also cat the /dev/ttyGPS0 device and see strings from the GPS, but I am not sure how to control the GPS (i.e. report rate, etc.). I would like to be able to access the GPS from C/C++ and get the current position fix. Any pointers on how to do this with the GPS on the Dragonboard410c?

#7

Okay, so I think I figured out my own question. Would the recommended approach be to use GPSD and its client side interface? Seems like that is the most straightforward and standard method.

#8

hello @ ndec
can you please tell me how i will access the onboard gps and bluetooth of dragonboard 410c having linaro (debian) o.s in it as i am not finding any icon on linux (debian) operating system ? well i installed gps through LxTerminal ? please provide the solution as i am not getting and stuck in this ? your help will be highly appreciated.

Thanks in advance!!!