Using ncAction to Start & Stop CAN objects

Hello,
I have to start and stop CAN Objects and I have unexpected results : if
I set NC_ATTR_START_ON_OPEN to NC_TRUE in the interface configuration,
everything works properly. Then if I set NC_ATTR_START_ON_OPEN to
NC_FALSE, ncAction function does not work properly.
I'm using NI-CAN v2.3.
Here is a sample of my code.
Any suggestion about that problem ?
Attachments:
CAN_ncAction.c ‏5 KB

Hi JCX,
I can reproduce your Problem. It seems that there is something wrong with the handles. We work to get it fixed, but it can take a little while.
For the moment the workaround is to start the second Object (ncAction) before you try to Stop it. The new Start will fix a kind of a handle problem, so you should be able to Stop the Object then.
It should look like this then:
// Start the network interface and CAN objects
NiCANErrChkMsgPopup(ncAction (PortHandle, NC_OP_START, 0));
// Stop the Second Frame
NiCANErrChkMsgPopup(ncAction (HdleSTD301, NC_OP_STOP, 0));
// Start the CAN object
NiCANErrChkMsgPopup(ncAction (HdleSTD1495, NC_OP_START, 0));
// Stop the First Frame
NiCANErrChkMsgPopup(ncAction (HdleSTD1495, NC_OP_STOP, 0));
because the Stop cleanes the message queues, you have to write a new message to the write queue before any restart.
hope that helps
DirkW

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