Ruby-serialport with Ruby 1.9 error

I’m a newbie programmer and I’ve been trying to communicate with an
Arduino using the ruby-serialport library. If I run this:

require ‘rubygems’
require ‘serialport’
sp = SerialPort.new “COM3”, 9600
sp.write “H”
puts sp.read # hopefully “OK” :wink:

I get this error (as a windows pop-up box):

‘The application has failed to start because msvcrt-ruby18.dll was not
found. Re-installing the application may fix the problem.’

and this ruby error in my command line window:

D:/Ruby19/lib/ruby/gems/1.9.1/gems/ruby-serialport/lib/serialport.rb:1:in
require': 126: The specified module could not be found. - D:/Ruby19/lib/ruby/1.9.1/i386-mingw32/serialport.so (LoadError) from D:/Ruby19/lib/ruby/gems/1.9.1/gems/ruby-serialport/lib/serialport.rb:1:in<top (required)>’
from ser.rb:2:in require' from ser.rb:2:in

As far as I can see, the serialport library was supposed to work with
1.8. There doesn’t seem to be a 1.9 version on the GitHub repository
either.

I’m pretty stuck and don’t want to learn Python just so I can write
programs for my Arduino (I need to use an email library as well so I can
light an LED each time I get a new email - ie. I can’t use
‘Processing’).

Any suggestions much appreciated.

On Feb 4, 3:40 am, Tim N. [email protected] wrote:

D:/Ruby19/lib/ruby/gems/1.9.1/gems/ruby-serialport/lib/serialport.rb:1:in
<top (required)>' from ser.rb:2:inrequire’
from ser.rb:2:in `’

As far as I can see, the serialport library was supposed to work with
1.8. There doesn’t seem to be a 1.9 version on the GitHub repository
either.

You’ve installed a Binary gem for 1.8 when you’ve tried to use Ruby
1.9

Please install a gem binary gem that is compatible with Ruby 1.9 or
force the compilation process indicating the “ruby” platform:

gem install ruby-serialport --platform=ruby

I can’t comment on the state of the gem itself, but if you used
RubyInstaller and the Development Kit, building other gems could be
straight forward as *nix OS.

http://rubyinstaller.org/
http://wiki.github.com/oneclick/rubyinstaller/development-kit

Luis L. wrote:

On Feb 4, 3:40�am, Tim N. [email protected] wrote:

D:/Ruby19/lib/ruby/gems/1.9.1/gems/ruby-serialport/lib/serialport.rb:1:in
<top (required)>' � � � � from ser.rb:2:inrequire’
� � � � from ser.rb:2:in `’

As far as I can see, the serialport library was supposed to work with
1.8. There doesn’t seem to be a 1.9 version on the GitHub repository
either.

You’ve installed a Binary gem for 1.8 when you’ve tried to use Ruby
1.9

Please install a gem binary gem that is compatible with Ruby 1.9 or
force the compilation process indicating the “ruby” platform:

gem install ruby-serialport --platform=ruby

I can’t comment on the state of the gem itself, but if you used
RubyInstaller and the Development Kit, building other gems could be
straight forward as *nix OS.

http://rubyinstaller.org/
http://wiki.github.com/oneclick/rubyinstaller/development-kit

Hi Louis,
Does ruby-serial works well with ruby1.8 ?

Thanks,
ashik

There is a 1.9 version of this gem on github, I’m not sure why searching
didn’t find it.
http://github.com/shawn42/ruby-serialport

Also, I believe this was released to gemcutter as serialport:
gem install serialport

HTH
/Shawn A.

Shawn A. wrote:

There is a 1.9 version of this gem on github, I’m not sure why searching
didn’t find it.
http://github.com/shawn42/ruby-serialport

Also, I believe this was released to gemcutter as serialport:
gem install serialport

HTH
/Shawn A.

Thanks but I still seem to get the same errors. First it gives me this
error:

D:\Ruby19\lib\ruby\gems\1.9.1\gems\ruby-serialport\test>ruby miniterm.rb
miniterm.rb:1:in require': no such file to load -- ../serialport.so (LoadError) from miniterm.rb:1:in

So I find ‘serialport.so’ from here
http://rubyforge.org/frs/?group_id=61&release_id=30322. The file called
‘serialport_win32.zip’. I put the ‘serialport.so’ file in the
D:\Ruby19\lib\ruby\gems\1.9.1\gems\ruby-serialport folder and then I get
this windows pop-up error again:

‘The application has failed to start because msvcrt-ruby18.dll was not
found. Re-installing the application may fix the problem.’

I don’t quite understand where I am going wrong. Is there some kind of
updated ‘serialport.so’ that I need?

Thanks for the help.

D:\Ruby19\lib\ruby\gems\1.9.1\gems\ruby-serialport\test>ruby miniterm.rb
miniterm.rb:1:in require': no such file to load -- ../serialport.so (LoadError) from miniterm.rb:1:in

I think this might mean there is “some other” dependency that it is
missing.

from

http://wiki.github.com/oneclick/rubyinstaller/gem-list

it appears that the “serialport” gem should build and work with 1.9.1
mingw + devkit

E:\dev\ruby\ruby-prof\test>gem install serialport
Building native extensions. This could take a while…
Successfully installed serialport-1.0.1
1 gem installed

E:\dev\ruby\ruby-prof\test>irb

require ‘serialport’
=> true

‘The application has failed to start because msvcrt-ruby18.dll was not
found. Re-installing the application may fix the problem.’

That ruby18.dll is a hint–you’re using ruby19 and it’s searching for
ruby18.dll, so there’s probably a problem there.

You could also try using an older version of Ruby for windows, which
probably would work with that .so file (“legacy one click installer” on
http://rubyinstaller.org/download.html)

Also Python isn’t that hard to learn–we don’t hate it here :slight_smile:

GL!
-r

After much effort I have finally got it to work!

For those who are interested I used this library and it works perfectly
with 1.9.1:

http://github.com/hparra/ruby-serialport

Thank you all!

Roger P. wrote:

D:\Ruby19\lib\ruby\gems\1.9.1\gems\ruby-serialport\test>ruby miniterm.rb
miniterm.rb:1:in require': no such file to load -- ../serialport.so (LoadError) from miniterm.rb:1:in

I think this might mean there is “some other” dependency that it is
missing.

from

http://wiki.github.com/oneclick/rubyinstaller/gem-list

it appears that the “serialport” gem should build and work with 1.9.1
mingw + devkit

E:\dev\ruby\ruby-prof\test>gem install serialport
Building native extensions. This could take a while…
Successfully installed serialport-1.0.1
1 gem installed

E:\dev\ruby\ruby-prof\test>irb

require ‘serialport’
=> true

‘The application has failed to start because msvcrt-ruby18.dll was not
found. Re-installing the application may fix the problem.’

That ruby18.dll is a hint–you’re using ruby19 and it’s searching for
ruby18.dll, so there’s probably a problem there.

You could also try using an older version of Ruby for windows, which
probably would work with that .so file (“legacy one click installer” on
http://rubyinstaller.org/download.html)

Also Python isn’t that hard to learn–we don’t hate it here :slight_smile:

GL!
-r

Hi Gordon and All ,

Thank you very much rubyinstaller.org groups . We achieved not only in
linux, windows too . As per the instructions from rubyinstaller.org , I
installed ruby1.8 and devkit .

Then Finally I download win32serial then I followed the instructions in
Readme from win32serial.zip . Then run the modem.rb sample file . Now
the modem is responding correctly .

However after rubyinstaller and devkit, I can shine in windows as same
as linux .Soon I am going to write documentations for this .

Greets a lot,
ashik

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