[En-Nut-Discussion] Problem: read uart port

[Adam Dybkowski]

Ole Reinhardt wrote:

> Just write the code like this:
> 
> int got
> int offset = 0;
> static char inbuf[58];
> 
> do {
>    got = _read(_fileno(uart), inbuf + offset, 58 - offset);
>    if (got >= 0) offset += got;
> } while ((got >= 0) && (offset < 58));

This will make a 100% busy loop that eats a lot of CPU power. Is that
possible in Nut/OS to use select function to sleep between reads? Or
maybe _read function works in blocking mode and select is not necessary?

-- 
Adam Dybkowski
		adybkows at wp.pl
		http://dybkowski.net/