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From: leone@ohsu.edu (T J Leone)
Newsgroups: comp.unix.questions
Subject: STREAMS on a full duplex line
Message-ID: <25805@adm.brl.mil>
Date: 1 Feb 91 23:33:17 GMT
Sender: news@adm.brl.mil
Lines: 5

I'm using STREAMS to do ARQ data transfer over a full duplex serial line, so after I write to the line I have to check for an ACK.  But how do I know that my output buffer has cleared through my UART before I try to read?  Isn't there a danger that I will read back in some of the data I'm trying to send when I try to read the ACK?  If so, is there a way to handle this without writing a new device driver?

--tj

leone@ohsu3b2.ohsu.edu