Re: ASK: How to send a character to serial port from OS/2 pro

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#1893

From: Dave Serls
Date: Fri, 13 Nov 1992 13:17

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tranx@wl.aecl.ca writes in article <11NOV92.15133100@wl.aecl.ca>:
>
> A: I tried to write a program to communicate with my instrument through
>    a serial port(eg. COM1). I have C Set/ 2 and Work Frame but I couldn't
>    find a system call that allows me to "open COM1: for example" and return
>    a handle. So that I can use this handle to send a character to this serial
>    port. Would you like to help me out?
>
There is a control program call DosOpen which allows one to open a COM
port. It is opened more or less like a file.  You may also need to call
DosDevIOCtl to condition to port to your requirements.  It may also be
beneficial to put the DosRead/DosWrite code in separate threads to
allow the rest of your program to process while the COM port code
is blocked on a read.

The Ray Duncan book 'Advanced OS/2 Programming' ISBN: 1-55615-045-8,
altough written fro OS/2 1.x, still contains valuable and valid
examples in this area.

--
============================================================================
Dave Serls                                                 303-973-6120
serls@dashs.denver.co.us                                   Sorry Software
============================================================================

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Path: arc1-ca.pugleaf.net!sparky!uunet!ogicse!uwm.edu!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!csn!dashs!serls
From: serls@dashs.denver.co.us (Dave Serls)
Newsgroups: comp.os.os2.programmer
Subject: Re: ASK: How to send a character to serial port from OS/2 pro
Message-ID: <721660632snx@dashs.denver.co.us>
Date: 13 Nov 92 13:17:12 GMT
Article-I.D.: dashs.721660632snx
References: <11NOV92.15133100@wl.aecl.ca>
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