UART polling

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originally posted by fidodido@Feb 9 2006, 02:38 AM

hello to everybody,

i'm developing an application made by several task. i'd like to receive data from uart in asynchronous way. so i has a main loop that continuously execute some task and sometime need to execute a gets() to capture data from uart and store them.

the problem is due to the fact that the gets() is a blocking function and don’t return until new data arrive on uart so the mail loop is on hold.

how can i resolve this problem?

regards !

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I&#39;m having the same problem. What&#39;s more is that if I set the O_NONBLOCK flag, a send buffer overrun occurs because it&#39;s not blocking on the output messages I&#39;m sending. I&#39;d like for it to block on send (to wait for room in the buffer), but not block on receive commands.

I would expect a command like feof() to return TRUE if the receive buffer is empty, or at least have a similar function call be available to poll the buffer before a blocking receive command. But I&#39;ve found nothing. Instead, the only thing that seems to work on the receive side of things is to use the NONBLOCK option. Is there something I&#39;m missing?

Thanks,

Drew