Posted on May 17, 2011 at 13:49Hi, I've found my problem, maybe it'll work for you aswell. I've added the line: SetEPTxValid(ENDP1); After the USB_SIL_Write call. Seems to be in accordance to the ref manual: ...and finally sets STAT_TX to ‘11 (VALID...

Posted on May 17, 2011 at 13:49You are not alone. I too have the same issue. It seems that the CDC host driver is not transmitting IN tokens. When exactly are these tokens tranmitted by the driver? Does it poll the device?