[En-Nut-Discussion] UART-Polling

[urbi]

Hello,

For polling you can test the buffer length:

cnt = _filelength(_fileno(input)); 
if (cnt>0)
{
  fread(....);
}

In this way you have a non blocking function.

Regards
Urban


Martin Walda wrote:
> 
> Hello,
> 
> I use an Ethernut 2.1 Rev B Board with an ATMega 128 controller.
> 
> My question is, how can I poll data from the uart interface? I have tried
> fread, fgets and _read. All these functions seems to wait for incomming
> character's. I am searching for a non blocking function.
> 
> Thank you very much
> 
> Martin
> 
> 
> 
> 
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