##

#  
#                          RS232
#    
#  Ruby interface to Windows Serial Port API
#  
#  author      hugo benichi
#  email       hugo.benichi@m4x.org
#  copyright   2012 hugo benichi  
#  version     0.1.0
#
##

 installation:  

   run in the root directory
     rake gem_install

   it will compile the gem library and produce a .gem package for ruby
   it will then install the .gem automatically

 usage: 

   cf test/test_rs232.rb

   first, require the gem with
     require 'rs232'

   then instance an object of RS232, passing an address, and optionally parameters to configure
     serial_port = RS232.new 'COM1'

   the default parameters are
     baud rate: 9600
     8 bits
     1 bit stop bit
     no parity bit
     control flow hardware (RTS/CTS)
     delimiters "\r\n"

   you can directly use the RS232 instance with the 'write', 'read', and 'query' commands