High Speed Encoder Problem

[Hugh Meyer]

Originally Posted by Ether

Is this situation different at competition than at home?

Does the FMS follow the user's DS, or is it designed to send TeleOp packets at 20ms ?

And even if it is designed to send at 20ms (rather than following the user's DS), I guess the problem would still exist, albeit perhaps in a slightly different form, yes? no? still thinking about it.

Ether,

We use C++. There is a configuration variable that sets the periodic rate. If it is zero then the rate will follow the driver station. If it is not zero then the value entered will be the periodic rate. I tell our programmers to ALWAYS set the rate. We have not settled on a value for this year yet. We use a scope to be sure all of our traffic on the CAN bus is complete. This is detailed in other threads as you know.

As best I know FMS does not fiddle with this. Last year we used 100 msec and would show up on FMS as a long ping time. A few times the FTA would tell us about it, but it didn't seem to be a problem. I have some photos of the FMS screen showing this. I will try to find them and post here, but this season has been very busy, so don't hold your breath. :-)

Maybe we should start a new thread about this?

-Hugh