[En-Nut-Discussion] I want to add RS485 to ethernut13h, how can I do ?

[DreamCat]

Thanks your help , Ulrich Prinz!



2010/1/7 Ulrich Prinz <uprinz2 at netscape.net>

> Hi!
>
> If you use one of the newer Nut/OS versions you'll find "USART Driver
> Framework" in the "Device Drivers" section. Here you find some "USARTx
> Half Duplex" options you only have to define. As the ATmega128 does not
> support Hardware-DE/RE any port pin can be configured and used as it is
> software-emulated.
>
> Best regards
> Ulrich
>
> DreamCat schrieb:
> > I want to add RS485 to ethernut13h boar for a little application, as we
> > known, it should use one of  ATMEGA128's UART, but how can I operate /RE
> and
> > DE? these two pin connect together and controll by one pin of mega128,
> > anyone can provide sample code and configfile?
> >
> > best reguard !
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