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USB CDC issue?

 
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JoeR



Joined: 26 Jul 2008
Posts: 3

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USB CDC issue?
PostPosted: Tue Jul 29, 2008 7:46 am     Reply with quote
Anyone else experience this.

I am using the USB CDC library on a PIC18F45550. And it works, usually.

If my pc host app is connected and talking across the USB, no problems.
If the USB is disconnected from the PC, no problem.

IF the USB is connected and the board is running, but the App is not running/exchanging data it will lock in about 2 minutes.

Is there a buffer thats filling...?
Should I catch the usb interrupt?

Thanks,
Joe
abraxas
Guest
same thing
PostPosted: Mon Aug 25, 2008 1:43 pm     Reply with quote
got the same problem as you
alex1784



Joined: 23 Aug 2008
Posts: 2

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PostPosted: Tue Aug 26, 2008 1:22 pm     Reply with quote
Hi. I am a novice at this, but I recommend you before sending any data to USB module, verify flag of conextion:

Code:

 if(usb_cdc_carrier.dte_present){
...//send data
   }

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