Embedded Coder Support Package for Arduino

Simulink block library for creating standalone Arduino applications (requires Embedded Coder)

Description

Arduino (www.arduino.cc) is a low-cost open-source electronics prototyping platform based on flexible, easy-to-use hardware and software.

Embedded Coder Support Package for Arduino allows you to create Simulink applications that will run autonomously on your Arduino board. Using Simulink Coder and Embedded Coder, the Simulink model is automatically converted to readable C code, compiled, and downloaded to the Arduino. You can:
* View the generated code
* Modify and reuse the generated code if needed
* Use Processor-in-the-loop (PIL) mode
* Use Embedded Coder features such as traceability and reporting.

Note: This support package does not support External mode

The support package comes with the following driver blocks:
* Digital Input
* Digital Output
* Analog Input
* Analog Output
* Serial Read
* Serial Write

It also comes with sample models demonstrating:
* Processor-in-the-loop (PIL) mode
* Serial communication with a host, and
* Use of Stateflow

For interfacing to the Arduino from MATLAB, see:
http://www.mathworks.com/hardware-support/arduino-matlab.html

This package has been tested with R2010b, R2011a, and R2011b (Windows only). See README.txt for product requirements.

Acknowledgements

Arduino Target inspired this file.

This file inspired Embedded Coder Arduino Servo Write Block.

• Required Products: Simulink Coder; Embedded Coder; Simulink
• MATLAB release: MATLAB 7.11 (R2010b)
• Other requirements: * Windows platform only (either 32-bit or 64-bit) * Tested on R2010b, R2011a, or R2011b * PIL mode requires R2011b or later

[Nathan Crosty]

I've gone ahead and created a tutorial for integrating the new Arduino 1.0.3 libraries in with this support package. There are some directions in this post that I have borrowed from to compose it, but I thought it would be useful to keep everything in once place.
http://ncrosty.thefbox.net/wordpress/?p=199

[klob]

Hi,

I have a problem using the arduino target.
I am trying to send data via serial communication from a model running on arduino to a model running in my computer.

The problem is that I get wrong values when the data I am about to send are negative (i.e. the transmission is fine when I am sending values 0 or greater but wrong when they are below zero (instead of -4 I receive 252 etc)).
I also tried to send negative values through the example that you have (demo_arduino_serial_communication and demo_arduino_serial_communication_host), by changing the Analog input block with a constant block and once again it works fine when using values zero or greater but I am getting the following error message when I am trying to send negative values through the serial communication.
"Parameter overflow occurred for 'Value'. The parameter's value is outside the range that the run-time data type can represent. The specified value was saturated to the closest representable value. You can control this diagnostic on the Diagnostics pane of the Configuration Parameters dialog."

I thought to try and change something on the Diagnostics pane, but I thought that it would be wiser to ask someone more experienced first.

What do you think?

I have an arduino UNO and MATLAB R2011b.

Thanks in advance,
a desperate student

[Fabien]

This also works with (at least) Arduino 1.01 on Mac OS Mountain Lion with the fixes by Stefan Disch and at least:

-Set the comport to whatever is stated in Arduino, usually /dev/tty..., the find comport does not work
-Adapt /arduino/+arduino/runAvrDude.m by removing whatever is in between "-P" and "%s" on line 23
-You will get a check for Arduino.exe, which does not exist. Remove it and set the path with arduino.Prefs.setArduinoPath('/Applications/Arduino.app/Contents/Resources/Java/')
-Go to the Arduino folder and copy Arduino.h, name it WProgram.h. (whoever decided this was a good idea..)

Good luck.

[Gautam Vallabha]

Aditya, the C code for S-functions and corresponding TLC files are in the "blocks" directory. For more info on creating custom blocks: see http://www.mathworks.de/de/help/simulink/user-defined-functions.html

[Aditya]

Is there a tutorial on how to create custom simulink blocks that encode standard arduino libraries, such as the lcd display library? I think you have to create your own s-functions. Also can you expose the s-functions that are behind the included arduino block library - that way other people can build and create new blocks.

[Jedediah Frey]

This is very trivial to get working on OS X and Linux too.

@Andrey Zagvazdin: The parsing of boards.txt is horrible. I have a new one that I would like to post however the licensing forbids it. I will work on making a patch file.

[Mohammad]

Has anyone ever try to use the arduino target package on chipkit max32 microcontroller? Or know whether it will support this package?

[Gautam Vallabha]

@ceverus33 question answered at http://www.mathworks.com/matlabcentral/answers/35538

[cerverus33]

What's the diference with the file "Simulink Support Package for Arduino Uno Hardware"? I'm a little confuse about it

[MathWorks Classroom Resources Team]

General guidelines:
* Please use this FileExchange page to post general comments and ratings on the support package

* If you have questions about using this support package, post your question at http://www.mathworks.com/matlabcentral/answers (with tag "arduino", and product "Embedded Coder")

[Gautam Vallabha]

Gerald, it has been tested with R2010b. There are no guarantees whether it will or will not work with R2009a.

If you are working with Mega, take a look at the support in R2012a (it only requires Simulink): http://www.mathworks.com/academia/arduino-software/arduino-simulink.html

[Gerald]

Hey,
I just need to know if this support package also works with Matlab R2009a?

I want to do small models in Simulink and flash it to the Arduino Mega 2560 Board. I can just use R2009a!

[Andrey Zagvazdin]

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.

[Mikhail]

Thumbs up MathWorks for providing a more free license on this package (as of 14th March 2012 release), allowing to distribute and share the code!
It's a pity though that the contents itself had not been updated for a long time.

[Nils]

 

[Gary]

Would like to change the AnalogOut PWM frequency, need to know if changing timer1 & timer2 is safe for integrity of simulink time base (assuming timer0 is used by simulink)?

[Mikhail]

Here i added the Servo Write block, which works with motor shield:
http://www.mathworks.com/matlabcentral/fileexchange/35356-simulink-arduino-servo-write-block

You are welcome to incorporate this patch into official package.

Thanks!

[Nitin]

Is it possible to access the I2C pins (SDA/SCL) via the blockset? If not, would appreciate a workaround!!

[Mikhail]

It would be great to have motor shield support, just like in MATLAB support package for Arduino.

[Gary]

Excellent package, works great on my Uno

In the block directory there is an LCDOutput 'S' function can this be made functional & if so how?

[Raja Rout]

I did'nt find any option for accessing the others serial port.

[Raja Rout]

very very thanks, keep up the good work. It works with 2011a successfully installed. Can we access the extra serial ports of Arduino using this toolbox??.....

[Mark]

Can this be used to configure pins as interrupts?

[Nuri Temurlenk]

Do you plan to support Chipkit Max32 kit?

http://www.digilentinc.com/Products/Detail.cfm?Prod=CHIPKIT-MAX32

[Stefan Disch]

I also tried fix 2) (using Arduino 1.0).

With Arduino 1.0 there came some changes in naming and layout of the includes (see http://arduino.cc/en/Main/ReleaseNotes for details).

I made the following changes to the current version of the arduino target:

1. Edit boards.txt and delete lines 145 through 181 (as told in a previous post)
2. Substitute every occurence of "WProgram.h" with "Arduino.h".
3. Add an additonal include path in rtwmkcfg.m in order to find the "pins_arduino.h" header file (moved to the new variants dir).
4. Commented out line 33 in arduino_smain.tlc because __cxa_pure_virtual is now defined in the Arduino 1.0 libs (see new.h).

These changes allowed me to compile the blink demo without errors.

[Curtis]

I tried this fix: 1) Use an older IDE (0023)

And everything worked.

[Curtis]

I tried this fix (2) Edit boards.txt and delete lines 145 through 181 (inclusive).)

And got this error after.

demo_arduino_blink.h:23:22: error: WProgram.h: No such file or directory
gmake: *** [demo_arduino_blink_data.o] Error 1

[MathWorks Classroom Resources Team]

There is a problem parsing hardware/arduino/boards.txt for the latest Arduino IDE (Arduino 1.0). For the time being, try one of the following workarounds:

1) Use an older IDE (0023 or 0022), or

2) Edit boards.txt and delete lines 145 through 181 (inclusive).

[Sean]

I'm getting an error when trying to execute arduino.Prefs.setBoard:

??? 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);

Anyone know why this is?

[Stephen Williams]

Just found the PWM block - it is labeled "Analog Output"

[Stephen Williams]

Please add PWM block

[Stefan Disch]

Has anyone used it with Arduino version 1.0 so far?

[Marcell]

 

[Frazer]

Great, thank you for that.

[MathWorks Classroom Resources Team]

The Nov 22, 2011 update is the same as the Nov 29 update (the earlier date is when the file was submitted to FileExchange, the later date is when it got approved and published).

[Frazer]

Is there a direct link for the Nov 29, 2011 update? I can only find the Nov 22, 2011 update.

[MathWorks Classroom Resources Team]

Note: the latest version of the support package (released Nov 29, 2011) should address the above issues with Uno.

[Frazer]

Hey guys,

Has anyone had an issue with "multiple main errors, i.e.

main.o: In function `main':
main.cpp:(.text+0x0): multiple definition of `main'

I've followed all the instructions and I've not had any problems using eclipse to compile for my Arduino UNO.

Thanks Frazer

[Guillaume MARTIN]

Thank you Stefan.

I did as you said (but I corrected the baudrate at 155200 in Prefs.m), and it ran.

Thank you very much,
Guillaume

[Stefan Disch]

I needed two changes to get it working in my environment (Win 7, Matlab 2011b, Arduino-0023 Software, Arduino Uno):

- In Prefs.m I changed in the function searchForComPort the string of the device name to '\\Device\\USBSER000'
(Have a look in your registry at HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM to identify the correct string)

- In runAvrDude.m I removed the baudrate option from the avrdude call. (Before it was set to 57600 and it doesn't work)

Best regards
Stefan

[Guillaume MARTIN]

The baud rate is configured at 57600, but my baud rate is 115200. (So, the upload don't works)

Do you know how to configure the baud rate in :
c:/AARDUI~1/hardware/tools/avr/bin/avrdude -V -F -C c:/AARDUI~1/hardware/tools/avr/etc/avrdude.conf -p atmega328p -P //./COM4 -c stk500v1 -b 57600 -U flash:w:demo_arduino_blink.hex ?

Bests regads,
Guillaume

[Suleman Shafqat]