C program to write to the com port
dkelly at HiWAAY.net
Sun Jul 31 21:14:14 GMT 2005
On Jul 31, 2005, at 9:50 AM, Paul Hamilton wrote:
> I am trying to write a C program that will send 3 bytes to the
> cuaa0 com
> port at 9600 baud, 8n1.
Oddly I found information on how to do that very easy to find for
Unix. Conversely wanted to do the same thing in Windows and hit a
brick wall. Everyone does it differently with different compilers. So
I told the boss a Windows Weenie would have to take over.
Had a perfectly good minimal text-only program which formed serial
Modbus ASCII packets, and displayed the response, under FreeBSD.
Would be interested in a library for mingw or similar with termios
cloned. Else some simple documented way to do unbuffered serial I/O.
ASCII Modbus doesn't really require unbuffered I/O but thats the path
I started on and would be required for Modbus RTU mode.
David Kelly N4HHE, dkelly at HiWAAY.net
Whom computers would destroy, they must first drive mad.
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