Unexplained intermittent CAN / 2CAN Jaguar problems at GSR

[drakesword]

Originally Posted by kamocat

The Jag does respond to every message. I know this from looking at the CAN subVIs.
On the "send" messages, it does an ACK as well. (Not sure what this is for)

You can find the Jag firmware source here:
http://www.luminarymicro.com/products/rdk-bdc24.html
or here:
http://www.luminarymicro.com/products/rdk_bdc.html

I believe what you want is in the firmware development package.

Thanks. Yes I know that the jag responds to every message, I was saying maybe it shouldn't need to ...

[jhersh]

Originally Posted by drakesword

Thanks. Yes I know that the jag responds to every message, I was saying maybe it shouldn't need to ...

The main reason it needs to handshake is that the CAN peripheral in the Jag handles each message based on interrupts... if a message isn't handled before a new message comes in, it will lose the packet and not act on the expected command. To prevent this, the cRIO waits until the Jag claims to be done (via an ACK).