Hi, Can anyone clarify how to go about doing a synchronous usb control transfer, similar to Linux's usb_control_msg? I want to implement the TIOCMGET ioctl on a usb-to-serial converter. The Linux driver uses synchronous control messages to read DCE and CTS serial pin status, and I want to do something similar in FreeBSD. The usbdi(9) manpage talks about control transfers using usbd_transfer_submit, but they're not synchronous. What about using usbd_transfer_drain? Is there an example driver showing setting up and doing control transfers?
The ucom driver seems to only implement TIOCSBRK and TIOCCBRK iotcls at the moment. Thanks _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "[email protected]"
