Uwe Bonnes wrote: > >>>>> "Jim" == Jim Paris <[email protected]> writes: > > ... > >> results. However with the RS232 pattern you can't easily measure > >> exact frequency with the scope. > ^^^^^ > Jim> If you send a continuous string of UUUUU then you'll see the base > Jim> frequency as a simple square wave. > > But the square wave is disturbed by the start/stop bits and the > turnaround between bytes. So you can estimate the frequency, but not measure > exact.
If you're using 8 data bits, no parity, and 1 stop bit, it'll be an exact undisturbed square wave. Try it, you'll see :) The turnaround between bytes will be zero as long as you don't let the FTDI buffer underflow. -jim -- libftdi - see http://www.intra2net.com/en/developer/libftdi for details. To unsubscribe send a mail to [email protected]
