[Haskell] COM port IO on a Windows machine?  Peter Pudney
Peter.Pudney at unisa.edu.au Wed Mar 17 17:46:25 EST 2004  I
have a microcontroller connected to the COM2 port on a Windows
machine, and want my Haskell program to interact with it. My
Haskell program is working nicely on my Mac, with interaction
using stdin and stdout, but I am not familiar with Windows and a
quick Google search did not give me any information on how to
get Haskell IO happening through a Windows serial port.  * How
should I open the COM2 port? IO Mode? Buffering?  * How do I
write and read?  I presume I can set the port parameters fusing
something like:     ...; e <- system "MODE COM2 19200,*,N,1,P";
...  (The application is a little interesting---we have three
large large bins in a Waste Education Centre. Kids present items
such as cans, paper, garden waste and rubbish to the bins, and
characters in the bin respond. The items are tagged with Dallas
1-wire ID buttons. A microcontroller in each bin sends a
(BinID,ItemID) pair to the PC