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u-blox / ubxlib

Portable C libraries which provide APIs to build applications with u-blox products and services. Delivered as add-on to existing microcontroller and RTOS SDKs.
Apache License 2.0
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Set up PointPerfect with MQTT client using ubxlib #203

Closed juncheng-dd closed 7 months ago

juncheng-dd commented 7 months ago

Hi, I was playing with the ZED-F9P evaluation kit(EVK-F9P) and was able to build a host application on ubuntu, which reads UBX-NAV-PVT message from the device using ubxlib. The next step I would like to achieve is to set up PointPerfect service for the RTK correction to achieve more accurate output.

Following the start up guide(https://developer.thingstream.io/guides/location-services/pointperfect-getting-started), I was able to configure a MQTT client using u-center. I am wondering whether we could use ubxlib to set up a MQTT client for the PointPefect service for my host application on my ubuntu laptop. If yes, would it be possible to share some examples to help me get started? Thanks

dbou-ublox commented 7 months ago

Hi there,

maybe too complicated for your case, but there is c code that wraps around ubxlib and controls ZED-F9 and PointPerfect components (it works out of the box for the XPLR-HPG kits featuring ESP32 MCUs, but maybe you could look at that as a reference) Here it is: https://github.com/u-blox/XPLR-HPG-software

cturvey commented 7 months ago

Check also
https://github.com/sparkfun/SparkFun_u-blox_GNSS_v3/tree/main/examples/NEO-D9S_and_NEO-D9C https://github.com/sparkfun/SparkFun_u-blox_GNSS_v3/tree/main/examples/ZED-F9P/Example18_PointPerfectClient

juncheng-dd commented 7 months ago

Hi @cturvey @dbou-ublox , thanks both for the examples! I will take a look

juncheng-dd commented 7 months ago

I was able to use a third party MQTT library to achieve what I want: https://github.com/eclipse/paho.mqtt.c. Close this issue then