Arduino IO package: Slides and Examples

Hi,

Found your link from Arduino blog. I just started to work on interfacing Arduino with Matlab. But unable to run the example file. Matlab connection unsuccessful when send command a=arduino('com7'). Any idea?

??? Error using ==> arduino>arduino.arduino at 100
Connection unsuccessful, please make sure that the Arduino is powered on, running
either adiosrv.pde or mororsrv.pde, and that the board is connected to the indicated
serial port. You might also try to unplug and re-plug the USB cable before attempting
a reconnection.

Cheers

To run in R2008a, line 21 of arduino.m needs to be:
addpath(fullfile(pwd,''));
instead of:
addpath(fullfile(pwd));

I sussed it out and thought I'd share it here. I have yet to test it with a more up to date version of Matlab. I guess the function could have changed(?).

Without this modification the fullfile function returns:
??? Error using ==> fullfile at 21
Not enough input arguments.

I have some question on obtain data from arduino which connect to optical encoder. I have using following code to obtain data from Arduino

        function encoder1pushbutton9_Callback(hObject, eventdata, handles)
        handles.a.pinMode(2,'input');
        handles.a.digitalRead(2)
        numberOfDatas = 200;
        data = zeros(1, numberOfDatas);
        i = 1;
      % Main graph figure
      figure(1);
      hold on;
      title('Incomming Data from External Device');
      xlabel('Data Number');
      ylabel(' output (0-1)');
      for i=1:numberOfDatas
            % Get the data from the serial object
            data(i) = handles.a.digitalRead(2);
            % Plot the data
            figure(1);
            plot(i, data(i), 'm*');
            drawnow;
      end
Did i have to set the Baudrate, databits and stopbits to acquire data from arduino???

   Hi I´m using Matlab R2010a, target arduino UNO, software arduino-0022, but i have a problem when I use my board in SIMULINK,
I follow steps in README

Arduino Target for Use With Simulink Software, Version 1.0 (R2010a) 01-July-2010
>> cd c:\ARDUINO_TARGET
>> addpath(fullfile(pwd,'arduino'),fullfile(pwd,'blocks'),fullfile(pwd,'demos'))
>> savepath
>> sl_refresh_customizations
>> arduino.Prefs.setArduinoPath('c:\Program Files\ArduinoPRGM\arduino-0022')
>> arduino.Prefs.setMcu('atmega328p')
>> comPorts=arduino.Prefs.searchForComPort;
>> arduino.Prefs.setComPort(comPorts{1});
??? Cell contents reference from a non-cell array object.

but i don´t know why this problem
I try to use arduino.Prefs.setComPort('COM1')
but demo_arduino_blink.mdl doesn´t work

Download failed. Check your serial connection and and run the command arduino.Prefs.getMcu to check you have specified the correct MCU.

The call to arduino_make_rtw_hook, during the after_make hook generated the following error:
Download failed. Check your serial connection and and run the command arduino.Prefs.getMcu to check you have specified the correct MCU.
The build process will terminate as a result.

### If your target board has TX and RX LED you should see them flashing ...
avrdude: stk500_getsync(): not in sync: resp=0x30
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

What can I do?
Thankyou
Mario Camacho

I'm having exacting the same problem as Mario... a connection issue when using the Arduino Uno with Simulink. The odd thing is, I also have the older Arduino board (Duemilanove) and this works absolutely fine with the Simulink examples provided. As far as I am aware, these two boards use exactly the same chip (328P) but the UNO now uses ATmega8U2 instead of the FTDI chip. I'm not sure how to resolve this issue or why this is causing a problem... any ideas? The Uno works fine within the Arduino environment and I can also make a connection when using the arduino.m file, but when I try to download a Simulink model to the board I receive the same error message Mario has listed above. Thanks,
-Ryan Stafford

hi, is there any video for this? why cant i access to it?

Simon. I can´t find the line you are saying with addpath on Arduino.m ¿Anyone have the same problem and solve it the same way?

I'm having trouble getting MATLAB to communicate w/t my Arduino Uno.

I've uploaded the adiosrv (I'm not using the motor shield), and had no errors uploading (I tried the srv file, got an error, but realized that since i'm not using the motor shield I should be using the adiosrv file anyways).

When I try a=arduino('Com6') in MATLAB 2009a, I get a timeout error. Using TMtool, I can't find the Arduino using matlab. So it seems that the adiosrv is not doing its job, but I'm not sure where to go from here!

Any help would be much appreciated!

can i implement all the functions in an arduino when interfaced with matlab....

Hello! I MatLAB 7.12 (R2011a) 64-bit. OS Windows 7
Fee clone Arduino, Russian assembly Freeduino (http://freeduino.ru/arduino/index.html), a complete analog Ardruino Uno / Duemilanove w/ATmega328.
My actions:
1 - Connection "Arduino" to MatLAB
* Set ArduinoIO (http://www.mathworks.com/matlabcentral/fileexchange/32374);
* Unpack the package into C: \ arduinoIO;
* >> Cd c: \ arduinoIO
* >> Install_arduino
* >> Savepath
* Flashed "Arduino" core srv.pde (https://github.com/adafruit/Adafruit-Motor-Shield-library/zipball/master);
* >> A = arduino ('COM4');
At this point, everything is OK! From the window MatLAB, board responds and takes command.

2 - Connection "Arduino" to SIMULINK
* Downloading the package Simulink Support Package for Arduino (http://www.mathworks.com/matlabcentral/fileexchange/30277);
* "Simulink Support Package for Arduino" unpacked to C: \ arduino_simulink
* Downloading Wednesday Arduino IDE (arduino-1.0) and extract it to c: \ ArduinoTarget
* >> Cd c: \ arduino_simulink
* >> Addpath (fullfile (pwd, 'arduino'), fullfile (pwd, 'blocks'), fullfile (pwd, 'demos'))
* >> Savepath
* >> Sl_refresh_customizations
* Plug-in board "Arduino" to your computer.
* Indicates the path to the environment Arduino IDE >> arduino.Prefs.setArduinoPath ('c: \ ArduinoTarget')

That's all up to this point NORMALLY PUT.

* Determine the current platform team
>> Arduino.Prefs.setBoard ('atmega328') or >> arduino.Prefs.setMcu ('atmega328')
Throws an error
>> Arduino.Prefs.setBoard ('atmega328')
?? Reference to non-existent element of a cell
array.
Error in ==> Prefs> Prefs.parseBoardsFile at 227
                lhs = parsedLines {i} {1} {1}%
                can be of the form xx.yy.zz
Error in ==> Prefs> Prefs.setBoard at 66
            boards =
            arduino.Prefs.parseBoardsFile (boardsFile);
>> Arduino.Prefs.setMcu ('atmega328')
?? Error using ==> Prefs> Prefs.setMcu at 129
This function is deprecated. Use
arduino.Prefs.setBoard instead, e.g.
  arduino.Prefs.setBoard ('uno')

TRIED TO IGNORE THIS OPTION AND KEEP SETTING, BUT IN MODELING, DEMANDS categorically specify the model.

Andrey, the MATLAB support package for arduino, (ArduinoIO), and the Simulink Support Package, (now renamed Embedded Coder support package), are completely different and are not supposed to work with one another. Either you use one or the others. If you have problems regarding the Embedded Coder Package, (that's what it looks like) i suggest that you can try looking where you actually downloaded that package.