Using Sockets with the cRio in Wind River

[C222]

I've been trying to use "sockLib.h" in wind river to send custom data back to my laptop. sockLib came with an html guide, but it all seems needlessly complicated. Is there an easier way to send data packets from the cRio to a laptop over the network?

[virtuald]

Its exactly the same as sockets on a normal operating system (well, mostly the same), so the difficulty is around the same.

Otherwise, you could use the dashboard class in conjunction with the labview dashboard viewer to send data that way.

Something we've been doing is just writing data files to the cRio filesystem and retrieving the file via FTP. You have to call Priv_SetWriteFileAllowed(1) or something to that effect for it to allow you to write to the filesystem however.

[nathanww]

Look at the exaple code for the robot and dashboard--this has some examples of how the user data function works. An important thing to keep in mind if you go ahead ande use your own protocol is that everything except the control port and the dashboard port will be firewalled at the competition.

[C222]

Thanks everyone, I got it working. If people would like it, I stuck it on my server here.
I also included a simple C# program to recieve from port 1027.

[byteit101]

can I have the source (so i don't have to decompile it, which is vvveeeerrrrrrrryyy easy w/ .net apps except the resources)?

[C222]

Originally Posted by byteit101

can I have the source (so i don't have to decompile it, which is vvveeeerrrrrrrryyy easy w/ .net apps except the resources)?

Sure, once I get home. I hope you dont mind that it's C#. You could also use a packet sniffer such as Wireshark.

[byteit101]

I hope you dont mind that it's C#.

My favorite Language is C# Followed by PHP, and then C++

[C222]

Here ya go. This'll just display the pure text of the packet on the screen. Ignore the "Send" button, it was originally created to be a chat client. Also, make sure you change the ports and IP addresses. I would also suggest you leave the protocol as Dgram.

This is also on my server 'cause its to big too upload to CD. Here ya go.

[kiettyyyy]

Well,

I want to be able to use this at comp, so, what port would we have to transfer data on?

[EHaskins]

Originally Posted by kiettyyyy

Well,

I want to be able to use this at comp, so, what port would we have to transfer data on?

FIRST has stated that there will be network monitoring in place to prevent any non-control system data from being transferred during the competition.

To send data during competition you must use the dashboard data, which is included in a control system packet, so it won't be blocked.

Any other system will likely be illegal at competition.

[kiettyyyy]

Well, how do you pull the dashboard data off of the control system packets?