[En-Nut-Discussion] 4-6 serial ports on the ethernut?

[Curtis Maloney]

Ovidiu wrote:
> Hello,

> The ethernut board is working as a "concentrator" gathering information 
> from
> some smaller AVR's (attiny15) through a serial line and forwarding the
> information to a central computer using eth. In hardware the 
> modification is
> very easy, the problem is with the software so my question is if NutOS has
> support for more serial ports and if not what "simple" solution can I use.

You would most likely do better with some for of bus.  If the chips are 
physically close, SPI or I2C are good.  If you're looking at longer distances, 
there are things like RS422/485, CAN, and others, depending on the complexity.

These will allow you to connect many devices to one port.

--
Curtis Maloney
cmaloney at cardgate.net