Raspberry pi running in external mode send data over (serial) communication to arduino uno

Dear all,

In my project I want to combine the processing power of a Raspberry Pi3 with an arduino uno microcontroller. The goal is to develop a vision based controlled mobile robot. Where the image processing takes places at the Raspberry (find a state reference [x,y,theta]) and the robot control is handled by the Arduino. I want to use the Raspberry Pi support package for Simulink for the image processing on the Raspberry. The code for controlling the robot (read encoders, compute control action, etc.) is complete. Hence, the missing part is sending a reference value (array [1x3]) from the Raspberry to an Arduino.

Some internet research suggests that is possible to setup communication between the devices over the USB ports. Other methods include creating a serial connection between the GPIO pins of Raspberry and the RX TX pins on the Arduino. However, it is unclear to me how to 'write' information over such a connection from the simulink environment (since there is no serial write block available in the support package).

• What is the best/easiest way to connect the Raspberry to an Arduino?
• How do i sent data (array of [1x3]) to the Arduino from the Raspberry Simulink model?

kind regards, Jeroen

Answer 1

[Venkatachala Sarma]

Hi Jeroen,

First, there is no Simulink block as of now for serial communication with Raspberry PI as given in the following link.

Is there any Simulink serial port block for Raspberry Pi?

However you can start with MATLAB Support for using Raspberry PI's serial port.

You could use these commands inside a MATLAB Function Block

Hope this helps.