piksi_multi_cpp proper settings for WiFi based communication

[chrissunny94]

Dear open source community , i have been trying to get the ROS drivers for piksi up and running for the past few days .

• https://github.com/ethz-asl/ethz_piksi_ros/tree/master/piksi_multi_cpp , i have managed to compile the ROS noetic version of this driver

• Also flashed the PIKSI hardware with the prescribed version of 2.4.20 firmware

• Where to specify the IP address , how do we pass this argument in the launch file ?

A stand alone example where all the required configurations are specified would be helpful to many people who are trying to make sense of this .

Best Regards ,
Chris

[rikba]

Hi there, you can change device_ids to the TCP address of your Piksi Multi, e.g.,
<arg name="device_ids" default="tcp://192.168.222.0:55555"/>

See rover.launch

[chrissunny94]

I already tried this , but got an error .

Let me reproduce the error and will post the log here .

[Reyshwanth]

Hey, I was able to set the right port, I am seeing udp packets from the base station on my wifi network, and they are being recieved at my rover's computer as well. However when I launch the driver , roslaunch piksi_multi_cpp rover.launch, I get the error "Could not bind to UDP socket. Observations will not be received". The port number being read is 26078, which is being read correctly by the file udp_observation_reciever.cc. Why am I unable to bind? please help me out!