Messages in this thread | | | From | "Raju Rameshwar Uprade" <> | Subject | Regarding USB-to-serial device driver | Date | Wed, 22 Sep 2010 11:02:46 +0530 |
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Greg, I am facing some problem in data copying. I am having a const unsigned char *buf which contains 02 08 00 00 00 00 00 00 f8. which is copied in port->write_urb->transfer_buffer and sent on ttyUSB0 using usb_submit_urb(port->write_urb, GFP_ATOMIC).
But I want to send the data bytes is a particular fashion.
1. I want to Add Mark parity. 2. Send the data byte 02 ( Address of a device )
3. Add Space parity . 4. send the data byte 08 00 00 00 00 00 00 f8 ( Null cmd + check sum )
Kindly help me.I am facing the problem in separating the data bytes so that I can send the data bytes separately using usb_submit_urb.
Thanks, Raj.
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