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Arduino Uno Serial Comms to Simulink

e14 Contributor

   Hi all - first post!

 

I'm trying to setup serial comms to display an analog input using SIMULINK and my Arduino Uno board.

 

I've dl'd the Arduino stuff for simulink.  no problem there.  I can communicate with the board.  no problem there.

 

I cant get the board to transmit analog input via serial over USB cable to show on Simulink scope or display block.

 

I have the Analog Input block, the Convert to uint8 block, and then the serial output block in my model.  at that point, i have a scope and display block connected.

 

i'm sure i'm missing something basic.  Any suggestions?

 

Thanks!

  • 0

    Hi,

    To stream data into MATLAB from Arduino boards, you can either:


    1. Enable External Mode in Simulink.  Note: Arduino Uno is not supported for external mode due to its processing power. Arduino Mega 2560 and Due both support external mode.

    2. Build two Simulink models: First one will be downloaded to the Arduino, and the second one runs on the PC> The first one includes a “Serial Transmit” block for Arduino that gets the data sent through serial port. Download the first one to Arduino. The second one includes a “Serial Receive” block in which the COM number is set to the Arduino’s. Run this model on the PC (instead of downloading it to Arduino) and look at the signal in a Scope or Save to Workspace.

    3. Use Arduino Support from MATLAB (aka Arduino IO). Note: Unlike the previous two approaches, the algorithm runs on the PC instead of the Arduino (tethered solution).


    Hope this helps