Arduino support package baud rate

Hello,

When using the arduino support package, is it possible to increase the baud rate within MATLAB from 9600 to 115200? I am aware that this can be done in the Arduino program, sent to the serial port and read by MATLAB, but I am not sure how to make this work within MATLAB and allow for simultaneous control of the digital out pins.

Thanks for your help!

Answer 1

[Madhu Govindarajan]

I am not sure which version of the support package you are using, but I am working with 15a and here is a file that might help you - boards.xml

Try this in MATLAB (it is from the doc) so might work in the older versions too.

>> edit(fullfile(arduinoio.SPPKGRoot, '+arduinoio', '+internal', 'boards.xml'))

If not here is how I got to it on my installation. Support package installation area - C:\MATLAB\SupportPackages\R2015a

The location of the file inside the support package installation area - arduinoio\toolbox\matlab\hardware\supportpackages\arduinoio\+arduinoio\+internal

so the actual path - C:\MATLAB\SupportPackages\R2015a\arduinoio\toolbox\matlab\hardware\supportpackages\arduinoio\+arduinoio\+internal

If you edit the boards.xml file and change the baud rate it might work.

Also ensure you clear classes in MATLAB after updating the file.

[Christopher]

Thanks for your answer. I am using 2015a as well. After updating the .xml file, I get the following error:

" Updating server code on board Nano3 (COM4). Please wait. Error using Example1_Example1_OpeningFcn (line 66) Cannot program board Nano3 (COM4). Please make sure the board is supported and the port and board type are correct.

Error in gui_mainfcn (line 220) feval(gui_State.gui_OpeningFcn, gui_hFigure, [], guidata(gui_hFigure), varargin{:});

Error in Example1 (line 42) gui_mainfcn(gui_State, varargin{:}); "

[Samuel Louise]

Hi Christopher, I am currently using 2018a, and from what I have seen this happens due to the Matlab communicating with the Arduino faster than what it can operate, such as trying to overclock the speed. I am currently using the MEGA2560 Arduino Board.

[Walkeronwater]

Hello, I am using MATLAB 2019b and I am trying to modify the Baud rate of my arduino Uno set by MATLAB support package. I found the .xml file 'boards.xml' but there were no content related to baud rate.

boards.xml