Search found 2 matches

by sven.984
Sun Feb 24, 2013 12:43 pm
Forum: STM32 Support
Topic: Serial over USB problem
Replies: 39
Views: 27178

Re: Serial over USB problem

Hi Giovanni,

yes you are right. I didn't realized the intention at the first time. I changed the code but I cannot see that the condition is passed (this happens with my code too). txsize seems to be always zero if the queue is empty.
I can see that a 64 byte packet is broken into several ...
by sven.984
Sun Feb 24, 2013 12:22 am
Forum: STM32 Support
Topic: Serial over USB problem
Replies: 39
Views: 27178

Re: Serial over USB problem

Hi...

I had a similar problem with the serial usb. After the first line of text sent from device to host, the usb analyzer shows a lot of zero size packets. I think the problem can be found in the following line (serial_usb.c: sduDataTransmitted):


else if (!(usbp->epc[ep]->in_state ...