I have a problem with a USB transfer.
My application is run normal I do a connection with an external PC. During a special test the application must do a reset. After this a software do not came up with the USB communication. On the USB line is only a rectangle signal, no USB descriptor is seen on the PC. The USB On (1k5) line is high.
The software is based on a older app note from ST.
The main loop is running
Can anyone help me J