NI USB CAN 8473 write single frame and log all frame of network with read notification on the same port

Hello,
I am trying to code an application which:
- Write sometime (button click) a frame on a CAN network
- Log all frame of CAN NETWORK
My hardware is NI USB 8473 (1 port).
1/ After reading NI help about CAN APIs, I think it is not possible to do "log all CAN frame" with Channel API because I need to install a asynchronous callback to read all message, and this functionality is only present in frame API.
Anyone can confirm?
2/ No problem let's use Frame API
I have tried "CAN Receive with Notification" example delivered with NI-CAN driver, configured on virtual CAN256.
I start other sample program to generate some frame on virtual CAN257, no problem, everything is working.
So, i have tried to modify "CAN Receive with Notification" to add write function. I have mixed this source with "Transmit Receive same Port" sample (which works fine alone on CAN256).
My program is running, but nothing appens when I click on WRITE button.
I suppose some attribute are not confired, but which one.
Anyone can help? (source of my modified sample is joined to this post).
Thanx.
PS: please note im a newbie with CAN
Attachments:
CAN Receive with Notification.zip ‏10 KB

Hi,
Thank you for posting your question on National Instruments' Forums.
I'm a little puzzled by your question.
If I understood well, you just want to receive every frame reaching the port and sometime write something through the port. Am I correct ?
You are right when you state that the NI USB 8473 can only work with frame API. However, if the operation you want to make is the one I discribed above, I can't see where you encounter a difficulty.
Indeed, for such a case, the example you mentionned in your post is perfectly suited. "Transmit Receive same Port" allows you to receive the frames reaching the port and write we needed too.
I think this example shoudl do the trick.
Or have you a more specific application in mind ?
I hope this information will help you.
Best regards,
Guillaume H.
National Instruments France
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>> NIDays 2011, le mardi 8 février au CNIT de Paris La Défense

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NI USB CAN 8473 write single frame and log all frame of network with read notification on the same port

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