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comp.lang.ruby

Does Ruby have support for serial connections - RS232??

Chris Finch

8/30/2006 10:25:00 AM

Hi everyone,

I would love to stick to Ruby with this problem - but is it possible in
Ruby to interface with a device through a RS232 serial connection?

I want to connect my Windows XP computer with a medical device through
RS232 - get data from the device and send it messages.

Any help greatly appreciated,
Chris

--
Posted via http://www.ruby-....
3 Answers

Thomas Beckett

8/30/2006 10:38:00 AM

0

On 8/30/06, Chris Finch <christopher.finch@nuth.nhs.uk> wrote:
> Hi everyone,
>
> I would love to stick to Ruby with this problem - but is it possible in
> Ruby to interface with a device through a RS232 serial connection?
>
> I want to connect my Windows XP computer with a medical device through
> RS232 - get data from the device and send it messages.
>
> Any help greatly appreciated,
> Chris
>
> --
> Posted via http://www.ruby-....
>
>

ruby-serialport might be what you are looking for:

http://rubyforge.org/projects/ruby-s...

Tom

igor.sarzisartori@gmail.com

8/31/2006 6:58:00 PM

0

Thomas Beckett wrote:
> On 8/30/06, Chris Finch <christopher.finch@nuth.nhs.uk> wrote:
> > Hi everyone,
> >
> > I would love to stick to Ruby with this problem - but is it possible in
> > Ruby to interface with a device through a RS232 serial connection?
> >
> > I want to connect my Windows XP computer with a medical device through
> > RS232 - get data from the device and send it messages.
> >
> > Any help greatly appreciated,
> > Chris
> >
> > --
> > Posted via http://www.ruby-....
> >
> >
>
> ruby-serialport might be what you are looking for:
>
> http://rubyforge.org/projects/ruby-s...
>
> Tom

I have tried ruby-serialport for my win32 project without success.

In the package there is serialport.so that don't works with my ruby
installation (ruby 1.8.4 (2005-12-24) [i386-mswin32]).

To compile the file serialport.c in a dll with Visual Studio is not a
problem, if you rember to use #define mswin in the code. When I tested
my dll with miniterm.rb I get:
(eval):1: (eval):1:in `private_class_method': undefined method `create'
for clas
s `Class' (NameError)
from (eval):1
from
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in `re
quire'
from miniterm.rb:2


On miniterm.rb:2 there is only:
require "serialport"

I don't know how to fix it, but I have created a simple dll in C++,
that works only in windows, to open a serial port and get some data on
it (there are many free serial implementation that target win32 in
C++). I have used Swig to export a function to get data.
If you know the module Win32API you don't need to create a dll.

Harry

9/1/2006 1:14:00 AM

0

It was easy to get this working.

http://raa.ruby-lang.org/project/wi...


Harry