SparkFun GPS-RTK Board - NEO-M8P-2 (Qwiic) isn't receiving RTK-data

Hi,

I’m using the SparkFun GPS-RTK Board - NEO-M8P-2 (Qwiic) (product number: GPS-15005). And it is not going in to RTK-float mode when I send correction to it. I followed the tutorial how to connect the board to a correction source: https://learn.sparkfun.com/tutorials/gp … ion-source

I’m using the correction network FLEPOS, because I’m in Belgium. In RTKLIB everything looks fine, I’m receiving the RTK-Data from FLEPOS and it is sending it over serial correctly when I look at the led indicators.

Afbeelding1.png
Normally when it receives correction data and has a clear view off the sky, it should blink the RTK led on the breakout board and then when it calculated the position it should turn off the led. It doesn’t do that.

Are you receiving the corrections via USB or UART2? If using U-Center, one should see the NTRIP icon at the bottom

center of the screen handshake and be green, like the RECEIVER handshake icon toward the right, bottom of your display.

Good luck!

Hi @CisseTS,

If you are feeding the corrections into the NEO via the RX/MOSI pin, you can check if they are being used using u-center on the USB port.

Download the latest version of u-center from the u-blox website. We recommend u-center, not u-center 2.

https://www.u-blox.com/en/product/u-center

There is a user guide on the u-blox website which will help you get started

Connect the USB port on the NEO board to your computer

The UBX-RXM-RTCM message will show which messages RTKLIB is sending and if your corrections are being used

You need to enable UBX-RXM-RTCM in u-center. You cannot Poll it

Open View \ Messages View, select UBX-CFG-MSG in the message ‘tree’

Select 02-32 RXM-RTCM and tick the USB port

Click Send at the bottom of the screen to enable the message

Navigate to UBX-RXM-RTCM in the message tree

The output should look like this:

download/file.php?id=7314

Check the “Used” column. Are the messages being used?

I hope this helps,

Paul