Dear all Thanks for your help.
> Can you tell us why you want to process > single bytes? Might be more of a job for message passing rather than > sample streams." what I need is to send data from one place to another And some times this data consist of small number of bytes, So what can I do to transmit these bytes if I don't know the size of buffer before sending? So I need either to send each byte alone or to send a fixed number of stream bytes. therefore, what is the solution? > I'd still believe the error is in the way you interact with the fifo. > Have you looked at setvbuf() or fflush()? > (e.g. "setvbuf(f, (char *)NULL, _IONBF, 0);" ) I tried fflush() and setvbuf(), buffering also exist. Best Regards
