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Mail Archives: djgpp/2004/12/28/13:46:30

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Newsgroups: comp.os.msdos.djgpp
Subject: serial port interaction
From: chus <chus73 AT undominio DOT es>
Message-ID: <Xns95CDC7F0584F6serialport@62.81.237.233>
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Date: Tue, 28 Dec 2004 18:51:14 GMT
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

(sorry if I am posting a known issue)

I am porting linux C codes to DJGPP/windows. Migration has not been very 
difficult except for one of the modules that reads/writes from/to serial 
port (/dev/ttyS* -> COM*). Linux version opens the port (fd = 
open("/dev/ttyS0") and then use read() and write() to receive and send 
data.

I rewrote open, send and receive functions using bioscom(...). Opening and 
writing functions work fine, however reading justs gets the last character 
received by the serial port.

I have seen (and test) programs using Win32API/dev-cpp (SetupComm ...) that 
interact with serial port like a regular file. I'm looking for similar 
functions with djgpp. Is it possible to read a stream of bytes received by 
the serial port, not just a single one?

Thanks in advance


PD: I dont know if pmcom could be a solution. I tried to compile it, but it 
failed.

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