2013-07-29 02:59 AM
Hi all,
I try to implement a CDC Device on STM32F4-discovery.I made an IAR project based on the VCP example project of the STM32_USB-Host-Device_Lib_V2.1.0.The STM32-Discovery starts correctly but two ''STM32 Virtual ComPort in FS Mode'' starts on my PC when I Plug the OTG connector on it.When I analyze the USB frames on USB with USBlyzer, I see that two answer are returned on the getDescriptor.Why do I have 2 answers on the getDescriptor?Bets regards,Pascal