Rubygem offering simple API in order to start using Serial Port communication in your project running on Linux, Mac OS X or Windows.

Add this line to your application's Gemfile:

gem 'rs_232'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rs_232

You may use this gem directly as a low-level transport layer in your communication module. As an alternative you may check another gem called (ruby-digital-transport)[https://github.com/rlishtaba/ruby-digital-transport] which is kind of transport abstraction porviding unified interface to SerialPort (using this gem), TCP and USB-HID.

   > include Rs232
   > port = new_serial_port('/dev/tty.ACM0', baud_rate: 9600)
   #=> #<Rs232::Impl @port='/dev/tty.ACM0'>
   > port.open?
   #=> false
   > port.connect # rasing IOError in case of port couldn't be opened.
   #=> #<Rs232::Impl @port='/dev/tty.ACM0'> 
   > port.pending_bytes
   #=> 15
   > port.read(15)
   #=> 'Hello, World!!!'
   > port.write("Hi")
   #=> 2
   > port.close
   #=> true
   > port.open?
   #=> false

Bug reports and pull requests are welcome on GitHub at https://github.com/rlishtaba/ruby-rs-232. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.