Objective Development Forums

Hello,

i have a few questions about the CDC implementation of the usb-driver.

my usb-device is a monochrome LCD which receives Frames from the host.
currently i use the HID-Class to transfer data. at a blocksize of 246 Bytes i achieve a speed at ~15-18kB/s

Which transfer speed is possible in CDC-Mode? is there a way to change the baudrate?

Avoid CDC mode if at all possible. The transfer rate with AVR-USB is lower than with all other modes because it eats so much (AVR-) CPU time. And it's not compatible with many Linux kernels and Windows Vista.