cRIO networking

[apalrd]

Except you would loose use of port2 for the camera... Maybe they could allow a hub on that port? Or use a radio with a built-in hub.

[Peter Johnson]

Originally Posted by apalrd

Except you would loose use of port2 for the camera... Maybe they could allow a hub on that port? Or use a radio with a built-in hub.

While in 2009 you could only hook the KOP camera up to port 2, this year, a hub was indeed allowed on port 2 (as a custom circuit). The camera fell under custom circuits as well. Port 1 had to be a direct connection to the radio, but port 2 was free for custom circuits.

[Greg McKaskle]

The best way to change networking settings is in Max -- NI-Measurement and Automation Explorer. It is able to make lots of changes to the cRIO including SW installs, but for what you are asking, it primarily changes the ini file.

Since the FRC rules could be quite different next year, I'd say, make as many changes as you like for off-season. Next year pay attention to the new rules when they come out and change the system accordingly.

Interesting things to consider:
Put a switch or hub on port 1 to allow for DS and programming laptop to connect by cable without removing the bridge. You can also modify the camera IP, move it to the switch and have the dashboard read directly from another http connection to the camera -- no overhead for the cRIO whatsoever. It is also possible to add a route to the cRIO so that the camera on port two can be forwarded by the TCP stack rather than by a cRIO program -- not sure how beneficial this is compared to the direct connection.

Greg McKaskle

[byteit101]

I was hoping to be able to do a few things, all (hopefully) 2010 FRC legal

1. (with a switch on 2) have a two cameras on a wireless robot

a. process images and find a target

b. tweak the camera's config for optimum images using their built in server

c. view both images from both cameras at the same time

2. have 2CAN and camera on wireless robot

a. view camera (by passthrough or other source)

b. work with 2CAN config (via built in server)

diagrams:

jag cam cam
 |    |    |
2Can/Switch
      |
     [2] cRIO
     [1]
      |
    WGA
  ~~~~
Router
|
Computer

Me

[jhersh]

Originally Posted by byteit101

I was hoping to be able to do a few things, all (hopefully) 2010 FRC legal

Why do you think you need to change the IP addresses on the cRIO? Just make the 2CAN IP compatible with the port 2 network. I believe that is even what is recommended in the 2CAN user guide.

-Joe

[byteit101]

Oops, forgot 3
3. not have to change the computer ip address to work with the 2CAN and Cameras when they are connected to the computer

[Racer26]

I'm fairly certain the 2010 FRC rules explicitly allowed a robot-mounted switch to do just that, run a 2CAN and Camera.

[jhersh]

Originally Posted by byteit101

Oops, forgot 3
3. not have to change the computer ip address to work with the 2CAN and Cameras when they are connected to the computer

So you want the devices on the same network, but not on the same network.

As long as you don't care if off network routing works, you can set the subnet mask to 255.0.0.0 on the PC and the 2CAN and the camera. Set 255.255.255.0 on each of the cRIO ports. Then the scheme you laid out will work for the case where every device is on one of those two networks. On caveat is you won't be able to talk to the 2CAN or camera via port 1 on the cRIO.

-Joe