Use Ethernet Shield with Arduino Hardware

Introduction

Simulink Support Package for Arduino hardware enables you to create and run Simulink models on Arduino board. The target includes a library of Simulink blocks for configuring and accessing Arduino sensors, actuators, and communication interfaces.

In this example you will learn how to create Simulink models receiving TCP/IP or UDP messages from a remote host and sending TCP/IP or UDP messages to a remote host, identified with a unique IP address and port number.

The host model uses the blocks from the Instrument Control Toolbox to send and receive TCP/IP or UDP messages to the target hardware.

Prerequisites

We recommend completing the Get Started with Arduino Hardware example.

Required Hardware

To run this example you will need the following hardware:

Connect Ethernet Shield to Arduino Mega 2560 Board

In this task, you will connect your Ethernet Shield to the Arduino Mega 2560 board.

1. Connect the Ethernet Shield on the Arduino Mega 2560 board.

2. Connect a USB cable from the PC to the Arduino Mega 2560 hardware.

For more details on connecting the Arduino Mega 2560 to Ethernet Shield, see Connect Arduino Ethernet Shield to Arduino Hardware.

Configure Network Properties for Host Machine and Ethernet Shield

Refer to Configure Network Settings for Arduino Ethernet Shield section of the documentation to configure the IP Address for the host machine and the Ethernet Shield.

Task 1 - Configure Simulink Model for Supported Arduino Hardware

You will perform this task if your Arduino board is not Arduino Mega 2560 hardware.

In this task, you will configure the model for the supported Arduino board.

1. In your Simulink model, click Simulation > Model Configuration Parameters to open Configuration Parameters dialog.

2. Select the Hardware Implementation pane and select your required Arduino hardware from the Hardware board parameter list. Do not change any other settings.

3. Click OK.

Task 2 - Sending TCP/IP data with Arduino and Ethernet Shield

This example shows how to use Simulink Support Package for Arduino hardware to send TCP/IP messages using an Arduino board with an Ethernet Shield.

Models involved in the demo

1. Target model running on the Arduino hardware: arduinomega2560_tcpsend

2. Simulink host model: arduinotcp_hostreceive

Run the Model configured for the target on the hardware

1. Open the arduinomega2560_tcpsend Simulink model.

2. Perform Task 1 if your Arduino board is not Arduino Mega 2560 hardware.

3. On the Hardware tab of the Simulink model, in the Mode section, select Run on board and then click Build, Deploy & Start.

Run the host model to receive data from the target model

1. Open the arduinotcp_hostreceive Simulink model.

Double-click on the TCP/IP Receive block. Make sure that the port number is matching the Ethernet shield settings specified earlier to ensure that the data is received from the correct target hardware.

2. In the Simulation tab of the Simulink model, click Run. The scope should display the data being sent from the target hardware.

Task 3 - Receiving TCP/IP Data with Arduino and Ethernet Shield

This task shows how to use Simulink Support Package for Arduino hardware to receive TCP/IP messages using an Arduino board with an Ethernet Shield.

Models involved in the demo

1. Target model running on the Arduino Mega 2560: arduinomega2560_tcpreceive

2. Simulink host model: arduinotcp_hostsend

Run the model configured for the target on the hardware

1. Open the arduinomega2560_tcpreceive Simulink model.

2. Perform Task 1 if your Arduino board is not Arduino Mega 2560 hardware.

3. On the Hardware tab of the Simulink model, in the Mode section, select Run on board and then click Build, Deploy & Start.

Run the host model to send data to the target model

1. Open the arduinotcp_hostsend Simulink model.

Double-click on the TCP/IP Send block. Make sure that the IP address and port number are matching the Ethernet shield settings specified earlier to ensure that the data is sent to the correct target hardware.

2. The target model running on Arduino hardware will receive data from TCP/IP and send it back to the serial port for monitoring and debugging. You can use a serial monitor or hyperterminal on the host machine to watch the serial data coming back from the target.

3. In the Simulation tab of the Simulink model, click Run to start running the host model.

4. At this point, TCP/IP data is sent from the host to the target and serial data is sent back from the target to the host. You should be able to see the serial data on the host using a serial monitor or hyperterminal.

Task 4 - Sending UDP data with Arduino and Ethernet Shield

This example shows how to use Simulink Support Package for Arduino hardware to send UDP messages using an Arduino Mega 2560 board with an Ethernet Shield.

Models involved in the demo

1. Target model running on the Arduino hardware: arduinomega2560_udpsend

2. Simulink host model: arduinoudp_hostreceive

Run the Model configured for the target on the hardware

1. Open the arduinomega2560_udpsend Simulink model.

2. Perform Task 1 if your Arduino board is not Arduino Mega 2560 hardware.

3. On the Hardware tab of the Simulink model, in the Mode section, select Run on board and then click Build, Deploy & Start.

Run the host model to receive data from the target model

1. Open the arduinoudp_hostreceive Simulink model.

Double-click on the UDP Receive block. Make sure that the port number is matching the Ethernet shield settings specified earlier to ensure that the data is received from the correct target hardware.

2. In the Simulation tab of the Simulink model, click Run. The scope should display the data being sent from the target hardware.

Task 5 - Receiving UDP Data with Arduino and Ethernet Shield

This task shows how to use Simulink Support Package for Arduino hardware to receive UDP messages using an Arduino board with an Ethernet Shield.

Models involved in the demo

1. Target model running on the Arduino hardware: arduinomega2560_udpreceive

2. Simulink host model: arduinoudp_hostsend

Run the model configured for the target on the hardware

1. Open the arduinomega2560_udpreceive Simulink model.

2. Perform Task 1 if your Arduino board is not Arduino Mega 2560 hardware.

3. On the Hardware tab of the Simulink model, in the Mode section, select Run on board and then click Build, Deploy & Start.

Run the host model to send data to the target model

1. Open the arduinoudp_hostsend Simulink model.

Double-click on the UDP Send block. Make sure that the IP address and port number are matching the Ethernet shield settings specified earlier to ensure that the data is sent to the correct target hardware.

2. The target model running on Arduino hardware will receive data from UDP and send it back to the serial port for monitoring and debugging. You can use a serial monitor or hyperterminal on the host machine to watch the serial data coming back from the target.

3. In the Simulation tab of the Simulink model, click Run to start running the host model.

4. At this point, UDP data is sent from the host to the target and serial data is sent back from the target to the host. You should be able to see the serial data on the host using a serial monitor or hyperterminal.