The C099-F9P RTK Base can be set to operate as a Wi-Fi access point and UDP server to deliver RTCM correction data via a Wi-Fi link. For the Rover operation, C099-F9P can be configured to either Wi-Fi STA mode or AP mode. STA mode is suitable for one Base to one Rover communication.
This article will introduce Base AP mode and Rover STA mode configuration.
Prerequisites
Two u-blox C099-F9P application boards (evaluation kit)
u-center installed
Tera Term installed
Getting started
Base ODIN-W2 configuration in Wi-Fi AP mode
1.Configure C099-F9P ODIN-W2 to work in Wi-Fi AP mode using CLI in Tera Term terminal:
/mem_store/run wifi_ap
2.Set the C099-F9P Wi-Fi and I2C interface to support the base configuration:
/mem_store/run base
3.Restart the C099-F9P application board to apply Wi-Fi AP mode settings, and the Base ODIN-W2 will wait until a Wi-Fi STA Rover connects to it before streaming any data via the Wi-Fi link. The screenshot below shows the Base is streaming data to Rover via a Wi-Fi connection.
Rover ODIN-W2 configuration in Wi-Fi STA mode
1.Configure C099-F9P ODIN-W2 to work in Wi-Fi STA mode using CLI in Tera Term terminal:
/mem_store/run wifi_sta
2.Set the C099-F9P to support rover configuration:
/mem_store/run rover
3.Restart the Rover C099-F9P application board to apply Wi-Fi STA mode settings, and the Rover C099-F9P automatically connects to the C099-F9P Base.
RTCM data streaming
When the Rover receives RTCM correction data from Base, the Fix Mode should change from 3D to 3D/DGNSS (3D/DGNSS/FLOAT or 3D/DGNSS/FIXED), and the RTK LED blinks in green. The two screenshots show the Base was in 3D/DNGSS Fix Mode and the Rover was in 3D/DGNSS/FIXED Fix Mode.
Trouble Shooting
You may need to consult this link if there is no RTCM data streaming.
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