Getting Started with VxWorks 7 on Xilinx Zynq Platform

This example shows how generate and run code from a Simulink® model onto a Xilinx Zynq ZC702 evaluation kit with a VxWorks® 7 operating system.

Introduction

Embedded Coder™ Support Package for Xilinx® Zynq™ Platform allows you to generate code from Simulink models and run the executable on Zynq hardware. The Simulink model can be configured to generate code for different operating systems that can be running on the Zynq hardware. This example shows how to generate code from a Simulink® model and run the compiled model on a Xilinx Zynq ZC702 evaluation kit that uses a VxWorks® 7 operating system. The example model will blink the DS12 and DS23 LEDs on the ZC702 hardware board.

Requirements

Open and Inspect the Model

Open the Getting Started with VxWorks on Zynq hardware model. The model has been configured to use the VxWorks operating system.

open_system('zynq_vxworks_gsg');

You can inspect the operating system configuration of the model as follows.

  1. On the Hardware tab, click Hardware Settings.

  2. On the Configuration Parameters > Code Generation tab, Build process > Toolchain Settings > Toolchain is set to Wind River Workbench DIAB 5.9.4.0.

  3. On the Configuration Parameter > Hardware Implementation tab, Hardware board settings > Operating system/scheduler > Operating system is set to VxWorks.

Build and Run the Model

  1. Connect the Xilinx Zynq ZC702 evaluation kit to the host computer.

  2. Setup a TFTP file sharing connection between the host computer and the Xilinx Zynq ZC702 evaluation kit. For instructions on setting up a TFTP/WFTPD file sharing connection, see TFTP/WFTPD Configuration Guide.

  3. In the Hardware tab, click Build, Deploy, & Start to build model and run the compiled model on the hardware board. The generated code will be compiled and linked on the host computer to create the VxWorks 7 executable. The generated code and executable are saved to the TFTP directory.

  4. When the code starts running on the Zynq hardware the DS12 and DS23 LEDs on the board start blinking at different rates. The DS12 LED is on for 0.25 second and off for 0.25 second. Similarly, DS23 LED is on for 0.5 second and off for 0.5 second.

Start and Stop Model Running on the Zynq Hardware Board

To run/stop a Simulink model, you use the runModel and stopModel methods of the zynq VxWorks Kernel Shell communication object.

1. Create a communication object to the Zynq hardware board using the zynq function. Zynq VxWorks Kernel Shell object that is your gateway to communicating with your Zynq hardware from MATLAB command window.

zvxworks = zynq('vxworks')

2. Check if the getting started model is running using the following code. If the model is running, the function returns true.

isrunning(zvxworks, 'zynq_vxworks_gsg')

3. To stop the model started in the previous section, run the following on the MATLAB command window. You should see DS12 and DS23 LEDs stop blinking at this point. You can also use the isModelRunning method to test if the model has stopped.

stop(zvxworks, 'zynq_vxworks_gsg')

4. To start a previously built model on your hardware board, you use runModel method. In order to start the Getting Started with VxWorks on Zynq hardware model again, run the following on the MATLAB command window.

runModel(zvxworks, 'zynq_vxworks_gsg')

Other Things to Try

Modify the other example models in the Embedded Coder™ Support Package for Xilinx® Zynq™ Platform to use the VxWorks operating system.