Check that your board and operating system are supported for a MATLAB Online connection. The supported operating systems are Raspbian Stretch or Raspbian Buster. The supported boards are the Raspberry Pi 2 Model B, Raspberry Pi 3 Model B, 3 Model B+ and Raspberry Pi 4 Model B. It is a best practice to implement the security measures outlined in Securing your Raspberry Pi.

Turn on your Raspberry Pi, and make sure it is connected to the Internet. Your device does not have to be connected to the same computer or the same network as the computer running MATLAB Online.

If you are using a version of Raspbian with a desktop environment, you can open a shell to enter the installation commands. If your device boots into the command line, enter the installation commands there. You can also access your device via SSH or another remote access method, as described in Remote Access.

Install the MATLAB package for Raspberry Pi by entering these commands in the Raspberry Pi shell:

$sudo apt-get update
$sudo apt-get install matlab-rpi

Configure your Raspberry Pi to make it discoverable in MATLAB Online. Follow the setup steps that appear in your command line.

$sudo matlab-rpi-setup

Restart your Raspberry Pi to start listening for MATLAB Online connections.

$sudo reboot

You can modify settings at any time after the initial setup by using flags. These are the flags you can provide to matlab-rpi-setup package installation command.

To see the full description of each flag in your shell, enter this command.

$man matlab-rpi-setup

Open a MATLAB Online session at https://matlab.bat365 from any computer connected to the Internet. Log in with your bat365 Account credentials.

Scan for Raspberry Pi hardware configured with the same bat365 Account credentials.

raspilist

ans =

  1x4 table

       Name        SerialNumber       PackageVersion          Status
      ______    __________________    ______________    __________________

      "myPi"    "00000000a9f2c18c"       "18.1.0"       "Ready to connect"

These are the possible statuses for your Raspberry Pi:

Use raspi without any inputs to reuse the settings from the most recent successful Raspberry Pi connection. If connecting for the first time, this function creates a connection to the first Raspberry Pi device designated as "Ready to connect" in the raspilist output.

r = raspi

r=

  raspi with properties:

         DeviceAddress: 'myPi'
          SerialNumber: '00000000a9f2c18c'
             BoardName: Raspberry Pi 3 Model B
         AvailableLEDs: {'led0'}
  AvailableDigitalPins: [4,5,6,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27]
  AvailableSPIChannels: {'CE0','CE1'}
     AvailableI2CBuses: {'i2c-1'}
      AvailableWebcams: {'UVC Camera (046d:0809)'}
           I2CBusSpeed: 0

Alternatively, you can specify the name or serialnumber of the Raspberry Pi from the raspilist output to connect to a certain device.

r = raspi('myPi');

r = raspi('00000000a9f2c18c');

After successfully connecting to your Raspberry Pi from MATLAB Online, see Getting Started with MATLAB Support Package for Raspberry Pi Hardware to perform basic operations on the hardware.

Create a MATLAB function blinkLED and verify it in connected mode in MATLAB Online on Raspberry Pi.

function blinkLED() 
    % Create a Raspberry Pi object
    r= raspi();
    % Blink the LED for 100 cycles
 
    for count = 1:10000
        % Turn on the LED
        writeLED(r,"LED0", 1);
        % Pause for 0.5 seconds
        pause(0.5);   
        % Turn off the LED
        writeLED(r,"LED0", 0);
        % Pause for 0.5 seconds
        pause(0.5);   
    end
end

Add compilation directive #codegen and make code changes to ensure the function is deployable. For more information on deploying MATLAB function on the hardware, see Workflow to Deploy MATLAB Function on Raspberry Pi.

function blinkLED()
    % #codegen
    % Create a Raspberry Pi object
    r= raspi();
    % Blink the LED for 100 cycles
 
    for count = 1:10000
        % Turn on the LED
        writeLED(r,"LED0", 1);
        % Pause for 0.5 seconds
        pause(0.5);
        % Turn off the LED
        writeLED(r,"LED0", 0);
        % Pause for 0.5 seconds
        pause(0.5);
    end
end

Create the hardware configuration object.

board = targetHardware('Raspberry Pi')

board =
 
targetHardware with properties:
 
               Name: 'Raspberry Pi'
      DeviceAddress: '00000000a9f2c18c'
           Username: ''
           Password: ''
           BuildDir: '/home/matlabrpi'
    EnableRunOnBoot: 0
        BuildAction: 'Build, load, and run'
        CoderConfig: [1x1 coder.CodeConfig]

Deploy the blinkLED function on the Raspberry Pi. Deployment can take a few minutes.

deploy(board, 'blinkLED');