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Write to serial port with Ruby [SOLVED!]

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  • A Offline
    Anton_S
    last edited by 20 Mar 2015, 00:06

    I'm glad it works with SU2014 😉

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    • B Offline
      Bas9999
      last edited by 20 Mar 2015, 07:28

      @mptak said:

      I see you tested it with SU2015...this confuses me. Were you using the 64 bit version of sketchup? Which Sketchy Physics download did you use? Thanks.

      No, i used the 32-bit version of SU2015, sketchyphysics does not work on 64-bit (yet)

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      • B Offline
        Bas9999
        last edited by 20 Mar 2015, 07:48

        Hi All,

        This is an example how to SEND data to the Arduino with SU 14/15, SketchyPhysics and Ruby Serial

        First the Arduino programming, here is the code to lit the integrated LED on digital 13, when there is a serial "1" recieved, the LED goes out when there is a "0" recieved.

        Arduino code:

        String readString;
        
        void setup() {
          pinMode(13, OUTPUT);
          Serial.begin(9600);
        }
         
        void loop() {
          while (Serial.available()) {
            delay(3);
            if (Serial.available() >0) {
              char c = Serial.read();
              readString += c;
            } 
          }
         
          if (readString.length() >0) {
            if (readString == "1") { digitalWrite(13, HIGH); }
            if (readString == "0") { digitalWrite(13, LOW); }
            readString = "";
          } 
        }
        

        Now...once programmed, create a sketchyphysics solid and paste this code in it:

        onstart{
          @serial = Serial.new('COM8', 9600)
        }
        
        onclick{
          @m = Sketchup.active_model.materials.add "My material"
          group.material = @m
          @m.color="Yellow"
        
          logLine("LED ON!")
          @serial.write('1')
        }
        
        onunclick{
          @m = Sketchup.active_model.materials.add "My material"
          group.material = @m
          @m.color="White"
        
          logLine("LED OFF!")
          @serial.write('0')
        }
        
        ontick{
          MSketchyPhysics3.closeControlPanel if frame == 1
        }
        
        onend{
          @serial.close
        }
        

        How does this work?
        When you run the script and click on the solid, the color will change to yellow and over the serial port a "1" will be send, de Arduino will recieve this "1" and will put on the LED light, when you release the mouse button, the model changes color back to white and a "0" will be sent, the Arduino recieves this and will put the LED light out!

        Have fun!

        Ps. Is there any code to read out a textbox or something (userinput possible?), where the user can specify the COMPORT and BAUDRATE?

        SU_14_15_Ruby Serial Sketchup Sketchyphysics screen.jpg

        I think i will start to create the 204/2015 walktrough soon!, this will be the banner for the
        projects:
        SketchyPhysics serial banner.jpg


        SU_14_15 - Ruby Serial SEND Example with Sketchup Sketchyphysics.skp

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        • B Offline
          Bas9999
          last edited by 28 Mar 2015, 14:07

          Hi Anton_S

          *EDIT SOLVED!!! SEE BELOW

          Could you assist on this one?

          When for example i use a diffrent baudrate (on purpose) i still get this error:
          sp su15 serial recieve error baudrate.png

          The original code was:

          ontick{
            MSketchyPhysics3.closeControlPanel if frame == 1
            string_size = 1024
            $serialdata = eval(@serial.read(string_size))
          }
          

          I changed it to this, but that doesn't work:

          ontick{
            MSketchyPhysics3.closeControlPanel if frame == 1
            string_size = 1024
          
            begin
              $serialdata = eval(@serial.read(string_size))
            rescue RubySerial;;Exception => e
              @serial.close if @serial
              MSketchyPhysics3;;SketchyPhysicsClient.physicsReset
              UI.messagebox("ERROR!")
            end
          }
          

          How to catch this error?

          *EDIT SOLVED!!!
          I just changed the line to:

          $serialdata = @serial.read(string_size)
          

          so it's only:

          ontick{
            MSketchyPhysics3.closeControlPanel if frame == 1
            $serialdata = eval(@serial.read(1024))
          }
          
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          • P Offline
            picpic020960
            last edited by 22 May 2015, 07:40

            Hello

            fine !

            but the link above is dead

            https://googledrive.com/host/0B3qg8f4WrNdHdHVyLVFuaHRjOTA/ffi%20+%20rubyserial.zip

            help and thanks

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            • A Offline
              Anton_S
              last edited by 22 May 2015, 22:40

              Hello Bas9999,

              I managed to tweak ffi and rubyserial (suggested by driven) into the plugins for SU. Download
              https://googledrive.com/host/0B3qg8f4WrNdHdHVyLVFuaHRjOTA/ffi + rubyserial.zip
              ffi + rubyserial.zip and extract into the plugins folder. It should work on Windows with SU2014 and SU2015. The advantage of it is that it doesn't require Python to run.

              Here is RubySerial usage Wiki: https://github.com/hybridgroup/rubyserial
              This is how I think your code should look like:

              
              onstart {
                @serial = Serial.new('COM8', 9600)
              }
              
              ontick {
                string_size = 1024
                $serialdata = eval( @serial.read(string_size) )
              }
              
              onend {
                @serial.close
              }
              
              

              Note: If particular serial port does not exist, an error will be raised causing simulation to reset.

              If you want ffi and rubyserial to work with SU2013 and prior, you should upgrade SU ruby msvcrt to 1.8.6 or later. Do this by going to SketchUp Program Files, to the path of SketchUp.exe, and replace msvcrt-ruby18.dll with the new one, which can be downloaded [url=https://googledrive.com/host/0B3qg8f4WrNdHdHVyLVFuaHRjOTA/msvcrt-ruby18.zip:196vcuuf]here[/url:196vcuuf].

              Tell me how it goes as I don't think I have any serial ports to test myself.

              Anton

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              • A Offline
                Anton_S
                last edited by 22 May 2015, 22:42

                That's strange. For some reason SketchyUcation can't parse the url properly. Try using this unparsed link instead: https://googledrive.com/host/0B3qg8f4WrNdHdHVyLVFuaHRjOTA/ffi + rubyserial.zip

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                • P Offline
                  picpic020960
                  last edited by 24 May 2015, 17:49

                  Thanks

                  the download is OK

                  but other pb : i want to test the bas9999 example but

                  it's SU2015 version.

                  On my Vista dsktop only SU2014 supported.

                  Can everybody downgrade bas9999 sketchup model file from SU2015 to SU2014

                  More thanks

                  NB : maybe the serial port work with ruby without SU-Physics ?

                   if yes , how to ?
                  
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                  • TIGT Offline
                    TIG Moderator
                    last edited by 24 May 2015, 17:57

                    Here's a v2014 version SU_14_15 - Ruby Serial SEND Example with Sketchup Sketchyphysics[v2014].skp

                    TIG

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                    • A Offline
                      Anton_S
                      last edited by 24 May 2015, 18:18

                      @picpic020960 said:

                      NB : maybe the serial port work with ruby without SU-Physics ?
                      if yes , how to ?

                      Yes, Ruby Serial works without SketchyPhysics.

                      It's easy to use:

                      
                      # Require the library
                      require 'rubyserial'
                      
                      # Instantiate serial
                      my_serial = Serial.new(address, baude_rate = 9600, data_bits = 8)
                      
                      # Get data and do whatever you want with it
                      size = 1024
                      data = my_serial.read(size)
                      
                      # Set data
                      data = ""
                      my_serial.write(data)
                      
                      # Close serial once you're done using it
                      my_serial.close
                      my_serial = nil
                      
                      

                      See this link for more info: https://github.com/hybridgroup/rubyserial

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                      • T Offline
                        tomasz
                        last edited by 2 Jan 2020, 17:59

                        @anton_s said:

                        Yes, Ruby Serial works without SketchyPhysics.

                        I installed the 'rubyserial' gem, but the initialization of Serial.new("COM3")
                        crashes for me in SU2019 Win 10.

                        rubyserial-0.6.0.gem
                        ffi-1.11.3-x64-mingw32.gem

                        I will try to figure out why it does that.
                        Does anyone have had a success with 'rubyserial' in SU2019?

                        Author of [Thea Render for SketchUp](http://www.thearender.com/sketchup)

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                        • T Offline
                          tomasz
                          last edited by 2 Jan 2020, 18:42

                          I have found the answer. It is ffi gem crashing in Win10 in SU2017...18...19

                          Link Preview Image
                          SketchUp crashes when FFI is loaded in Windows 10

                          Hi, I’m trying to load the FFI gem version (ffi-1.9.17-x64-mingw32) in Windows 10, Sketchup 2017 (maintenance build - 17.2.2555). Edit note: In my old post, I had only loaded the ffi_c.so file corresponding to ruby ver…

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                          SketchUp Community (forums.sketchup.com)

                          Author of [Thea Render for SketchUp](http://www.thearender.com/sketchup)

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