[En-Nut-Discussion] Using USART to Rx from PC Keyboard

Harald Kipp harald.kipp at egnite.de
Mon Dec 16 14:33:02 CET 2002


Just two things in a hurry

1. I already got a more advanced UART driver, supporting
XONOFF, parity etc. No HW handshake yet, but with all
the other standard stuff. No USART support so far.

2. As far as I remember from those old days with IBM
mainframes, synchronous operation is not connected to
a baudrate. Either one side or any independent part
generates the clock. This clock is then passed on a
specific line or somehow combined (NRZ etc) with the
data stream on the sender's side and extracted at the
receiver (PLL etc.).

Not sure, if this helps.

I can also remember having seen a PC keyboard interface
in the user project area of avrfreaks.


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