GPS-RTK Raspberry Pi pHAT issues.

GPS/GNSS Development Boards
1

Hello,

I just connected my pHAT for the first time and ran the example program and was able to receive Lat., Long. correctly. I am not trying to connect a correction source to the system yet. But when I went into u-Center software, I updated the Firmware to the latest ZED-F9P firmware from ublox’s website. The firmware update was successful according to the log, but after the update I am no longer able to see the connection to the COM port (bottom right “COM# + Baudrate” flashing green) anymore or when I run the same example that just returned the coordinates, nothing is received.

Is this a configuration file issue? Is there a default configuration file that comes on the Sparkfun ZED-F9P boards and when you do the firmware update it will wipe it?

Please let me know if you can help or if anyone else has had this issue.

Thanks.

2

Thanks for reaching out to us on this.

It is most likely an issue with the COM port being incorrectly assigned by the OS after the update; try viewing the Device Manager on your OS and view the COM ports…then unplug and re-plug the board, the device that disappears and then re-appears when you plug ti back in should be the correct one for your device. Then change settings in u-Center to match

If that doesn’t work, try reinstalling the drivers (different board used in example, but similar process): https://learn.sparkfun.com/tutorials/ge … ll-drivers

Hope this helps, and happy sparking!

3

Thanks for the reply, TS-Russell.

The computer is able to recognize the board after the update and even shows in the same COM5 slot that I had it in prior to the update. In u-center I can even select the COM5 from the connection drop down menu.

Also, how would a Windows OS driver issue affect the pHAT when it’s disconnected from the PC and is still unable to receive/ record data values?

4

We’ll be investigating further on whether the firmware update is causing conflicts; for now I would advise reverting back to the old/functional firmware until we have something more to offer.

Have a great day!

5

I tried reverting backwards and it was successful but the issue persisted on both u-center and the .py example. That’s what made me think it had to be something in the configuration set up or something. Keep me posted!

6

Hello,

I noticed this article was published!

https://learn.sparkfun.com/tutorials/ho … s-receiver

Is there a way that you all can share the ZED-F9P Config.Txt that is shown in the tutorial? Or the exact pHAT config.txt if it varies at all from the other ZED-F9P boards? I can try to load it back on and see if that helps.

7

What product are you using? GPS-RTK Raspberry Pi pHAT is in the subject but you’re asking about a configuration file for the ZED-F9P?

I’m not seeing anything in the guide about a config.txt file, where are you getting that?