Re: [avr-gcc-list] Small program for UART not working

[Peter Fuhrmann]

On Tuesday 30 August 2005 02:37, Gary Bi wrote:
> From the scope, I can calculate the baud rate rough
> number, for example, if setting it to 9600 in MCU, on
> scope, it was around that range; setting to 57600, the
> reading from scope will be around 57600, etc. But I
> don't know the exacly reading.

You might try sending 0xAA on the Atmel and 0xAA on the PC at the same time, 
and then use a two channel scope to compare the timing of the two waveforms.

You could try playing with the UBRR0L value a little to get the timing 
correct.

regards,

Peter