AnsweredAssumed Answered

STM32L0 USB slow after second cable replug

Question asked by stokic.srdjan on Jun 10, 2016
Latest reply on Jun 14, 2016 by stokic.srdjan
I have a curious problem on my STM32L151. I have the USB running in double buffering mode, and I can get a transfer rate of ~10MBit/sec. But after I unplug the USB cable, and plug it back, the transfer rate drops to ~6MBit/sec. After any subsequenct cable unplug/plug the speed remains at 6MBit. Only the first usb connection results in faster transfer rate.

This is happening 100% of the time. Does anybody has an idea what can go wrong?