Posted on February 19, 2014 at 02:49Hi,i want to make a f4 USB driver and i got a problem that when i run my program the computer can identify the USB device but cant transfer data between it, i try to trace the program and found the interrupte(DCD_HandleOutEP_ISR and DCD_HandleInEP_ISR) didn't trigger all my program is based on VCP example, the example works totally fine so i need some help
the attached file is my program and usb driver for it
