Getting started with STM MCUs: STM32F469 LIZARD

STM32F469 LIZARD board (ACTRON LIZARD).

The following article explains all necessary steps to create an Embedded Wizard UI application suitable for the LIZARD board. Please follow these instructions carefully and step by step in order to ensure that you will get everything up and running on your target. In case you are not familiar with Embedded Wizard, please read first the Quick Tour tutorial to understand the principles of Embedded Wizard and the GUI development workflow.

Prerequisites

First of all, you need the following hardware components:

STM32F469 LIZARD board from ACTRON AG

ACTRON ACT-I3 display from ACTRON AG

ST-LINK/V2 in-circuit debugger/programmer for STM32 from STMicroelectronics

USB cable to connect the board with your PC

ACTRON provides a variety of displays from 3.5" with 320x240 pixel, 4.3" with 480x272 pixel up to 5" and 7" with 800x480 pixel - each of them can be combined easily with the STM32F469 LIZARD board.

STM32F469 LIZARD board (ACTRON LIZARD), 4.3" and 5" display.

Make sure that you have got the following software packages:

Embedded Wizard Studio Free or Embedded Wizard Studio Pro

Embedded Wizard STM32 Platform Package

Embedded Wizard Build Environment for STM32F469 LIZARD

TIP

If you want to use the Free edition of Embedded Wizard Studio and the STM32 Platform Package, please register on our website and select the target STM32F469 LIZARD. Then you can download the above software packages.

All customers who licensed Embedded Wizard can visit our download center to get the above software packages.

Installing Tools and Software

Step 1: Install the latest version of Embedded Wizard Studio.

Step 2: Install the Embedded Wizard STM32 Platform Package.

Step 3: Download the STM32CubeProgrammer and install it. Test the connection from PC to LIZARD board and the proper installation of the USB drivers: Connect the LIZARD board with your ST-LINK/V2 in-circuit debugger/programmer for STM32 and connect the ST_LINK/V2 with your PC via USB and start the previously installed STM32CubeProgrammer. Select the green button Connect and verify that the connection could be established successfully. Finally, close the STM32CubeProgrammer utility.

Step 4: Unpack the provided Embedded Wizard Build Environment for STM32F469 LIZARD to your local file system (e.g. C:\STM32\STM32F469-LIZARD).

Step 5: Take a text editor and open the file FlashDownload.cfg that you will find in the subdirectory \Application\FlashDownload of the Build Environment. At the beginning of the file, the following environment variable has to be set to the installation path of the STM32CubeProgrammer utility:

Stm32CubeProgrammerPath - Absolute path of your installed STM32CubeProgrammer utility (Step 3).

Exploring the Build Environment

The provided Embedded Wizard Build Environment for STM32F469 LIZARD contains everything you need to create, compile, link and flash an Embedded Wizard UI application for the LIZARD board. After unpacking, you will find the following subdirectories and files:

StartGccBuildEnvironment.bat - This script file is provided to start a windows command line to build your GUI applications for the target.

\Application - This folder contains ready-to-use projects to compile and link an Embedded Wizard generated UI application. They are used for all provided examples and they can be used to build your own UI applications.

\FlashDownload - This folder contains a script to load the created binaries into the flash of your target by using the STM32CubeProgrammer tool. Don't forget to set the path of your installed STM32CubeProgrammer utility within the file FlashDownload.cfg.

\GeneratedCode - This folder is used to receive the generated code from an Embedded Wizard UI project. All template projects are building the UI application out of this folder. You can create your own UI project and generate the code into the subdirectory \GeneratedCode without the need to adapt the project.

\Project - This folder contains the prepared projects for GCC (make), IAR Embedded Workbench, Keil MDK-ARM and STM32CubeIDE.

\Source - This folder contains the files main.c and ewmain.c. There you will find the initialization of the system and the main loop to drive an Embedded Wizard GUI application. The file ewconfig.h contains general configuration settings for the target system, like memory ranges and display parameter and configuration settings for the Embedded Wizard Graphics Engine and Runtime Environment. Additionally, this folder contains a configuration file for FreeRTOS and the device driver C/H files used for the DeviceIntegration example.

\Examples - This folder contains a set of demo applications. Each example is stored in a separate folder containing the entire Embedded Wizard UI project. Every project contains the necessary profile settings for the LIZARD board. Due to the fact that the LIZARD board can be combined with different displays, a variety of examples are prepared for different screen sizes - you will find them in the subdirectories 320x240, 480x272 and 800x400. Depending on the screen size, the following samples are provided:

\HelloWorld - A very simple project that is useful as starting point and to verify that the entire toolchain, your installation and your board is properly working.

\ColorFormats - This project demonstrates that every UI application can be generated for different color formats: RGBA4444, RGB565, Index8 and LumA44.

\ScreenOrientation - This demo shows, that the orientation of the UI application is independent from the physical orientation of the display.

\DeviceIntegration - This example shows the integration of devices into a UI application and addresses typical questions: How to start a certain action on the target? How to get data from a device?

\GraphicsAccelerator - This application demonstrates the graphics performance of the DMA2D hardware graphics accelerator. Sets of basic drawing operations are executed permanently and continuously, while the user can switch on/off the hardware accelerator.

\BezierClock - The sample application BezierClock implements a fancy digital clock and timer application with animated digits. The application uses vector graphics to render dynamically the different digits for clock and timer. The change from one digit to another is handled by moving the vector points to get a smooth transition animation.

\BrickGame - The sample application BrickGame implements a classic "paddle and ball" game. In the game, a couple of brick rows are arranged in the upper part of the screen. A ball travels across the screen, bouncing off the top and side walls of the screen. When a brick is hit, the ball bounces away and the brick is destroyed. The player has a movable paddle to bounce the ball upward, keeping it in play.

\ChartsDemo - This application demonstrates the possibilities and the usage of the chart classes LineChart, BarChart and PieChart. The appearance of each chart diagram can be configured easily by using their corresponding properties. Additionally, this demo shows the usage of an outline box to manage scrollable content.

\ClimateCabinet - The ClimateCabinet demo shows the implementation of a control panel for a climatic exposure test cabinet. The user can define a heating time, a nominal temperature and humidity, a dwell time and the final cooling time.

\Dashboard - The sample application Dashboard shows the implementation of a car dashboard. The application demonstrates the usage of vector graphics created from svg path data and how transitions between two dashboard variants and further UI components can be achieved.

\PaperCutter - This demo shows the implementation of a paper cutting machine, where the user can define the pagination and format of the paper as well as the cutting speed and the amount of papers. The application contains many rect effects and fade-in/fade-out effects to change dynamically the layout of the screen.

\PulseOximeter - The sample application PulseOximeter shows the implementation of a medical device for monitoring a person's pulse frequency and peripheral oxygen saturation. The application demonstrates the usage of vector graphics within graphs and circular gauges.

\SmartThermostat - The SmartThermostat demo application shows the implementation of a fancy, rotatable temperature controller to adjust and display the nominal and actual temperature.

\WashingMachine - This demo shows the implementation of a washing machine with a couple of fancy scrollable list widgets to choose the washing program and parameters. The speciality of this sample application is the magnification effect of the centered list items and the soft fade-in/fade-out effects.

\WaveformGenerator - This WaveformGenerator demo application combines waveforms with different amplitudes and frequencies. The implementation shows the usage of vector graphics to draw a curve based on a list of coordinates.

\PlatformPackage - This folder contains the necessary source codes and/or libraries of the STM32 Platform Package: Several Graphics Engines for the different color formats (RGBA4444, RGB565, Index8 and LumA44) and the Runtime Environment (in the subdirectory \RTE).

\TargetSpecific - This folder contains all configuration files and platform specific source codes. The different ew_bsp_xxx files implement the bridge between the Embedded Wizard UI application and the underlying board support package (STM32 hardware drivers) in order to access the display, the graphics accelerator, the serial interface and the clock.

\ThirdParty - This folder contains third-party source codes and tools:

\ACTRON - This folder contains the board support package for the LIZARD board.

\gcc-arm-none-eabi - This folder contains a subset of the GCC ARM embedded toolchain to compile the examples.

\Make - This folder contains a make tool to build the entire GUI application via command line.

\STM32Cube_FW_F4 - This folder contains the necessary subset of the STM32CubeF4 embedded software for STM32F4 series used for the Embedded Wizard UI applications (HAL, BSP, drivers, FreeRTOS).

Creating the UI Examples

For the first bring up of your system, we recommend to use the example 'HelloWorld':

Example 'HelloWorld' within Embedded Wizard Studio.

The following steps are necessary to generate the source code of this sample application:

Navigate to the directory \Examples\size\HelloWorld.

Open the project file HelloWorld.ewp with your previously installed Embedded Wizard Studio. The entire project is well documented inline. You can run the UI application within the Prototyper by pressing Ctrl+F5.

To start the code generator, select the menu items BuildBuild this profile - or simply press F8. Embedded Wizard Studio generates now the sources files of the example project into the directory \Application\GeneratedCode.

Compiling, Linking and Flashing

IMPORTANT

Please take care that the display configuration corresponds to the display connected with your LIZARD board (check LIZARD_DISPLAY_TYPE within the file LIZARD.h). Furthermore, please ensure that the example that you are using has the same size than your connected display.

The following steps are necessary to build and flash the Embedded Wizard UI sample application using the GCC ARM embedded toolchain:

Open the LIZARD.h that you will find in the subdirectory \ThirdParty\ACTRON\BSP and set the macro LIZARD_DISPLAY_TYPE according your display.

Navigate to the top level of the Build Environment.

Open StartGccBuildEnvironment.bat - as a result, a windows command line window should open. In case there are error messages, please edit the file and double-check the path settings.

Now start compiling, linking and flashing:

make
make install

If everything works as expected, the application should be built and flashed to the LIZARD board.

Example 'HelloWorld' running on the LIZARD board.

All other examples can be created in the same way: Just open the desired example with Embedded Wizard Studio, generate code and rebuild the whole application using simply:

make install

Creating your own UI Applications

In order to create your own UI project suitable for the STM32F469 target, you can create a new project and select one of the STM32 project templates that are suitable to the display you are using.

As a result you get a new Embedded Wizard project, that contains the necessary Profile attributes suitable for the STM32 hardware:

The following profile settings are important for your target:

The attribute PlatformPackage should refer to an installed STM32 Platform Package.

The attribute ScreenSize should correspond to the display connected with your LIZARD board.

The attributes ModeOfBitmapResources and ModeOfStringConstants can be set to DirectAccess in case that the resources should be taken directly from flash memory. By default these attributes are set to Compressed.

The attribute OutputDirectory should refer to the \Application\GeneratedCode directory within your Build Environment. By using this template, it will be very easy to build the UI project for your target.

The attribute CleanOutputDirectories should be set to true to ensure that unused source code within the output directory \Application\GeneratedCode will be deleted.

The attribute PostProcess should refer to \Application\Project\EWARM\EWARM_ew_post_process.cmd if you are working with IAR Embedded Workbench or to \Application\Project\MDK-ARM\MDK-ARM_ew_post_process.cmd if you are working with Keil MDK-ARM or to \Application\Project\STM32CubeIDE\STM32F469-LIZARD\STM32CubeIDE_ew_post_process.cmd if you are working with STM32CubeIDE. In case of the GCC ARM embedded toolchain leave it blank.

Now you can use the template project in the same manner as it was used for the provided examples to compile, link and flash the binary.

After generating code, please follow these steps, in order to build your own UI application:

Start the batch file 'StartGccBuildEnvironment.bat'. Again, a windows command line window should open.

Start compiling, linking and flashing:

make install

Most of the project settings are taken directly out of the generated code, like the color format or the screen orientation. Only a few additional settings can be configured directly within the Makefile, like the usage of an external flash memory and the usage of the FreeRTOS operating system.

IMPORTANT

Please take care that the display configuration corresponds to the display connected with your LIZARD board (check LIZARD_DISPLAY_TYPE within the file LIZARD.h).

Console output

In order to receive error messages or to display simple debug or trace messages from your Embedded Wizard UI application, a serial terminal like 'Putty' or 'TeraTerm' should be used.

You can connect your LIZARD board using USART2 with your PC by using a level shifter / RS232 bridge - for details about the LIZARD connector please have a look into the LIZARD user manual.

Open the device manager to get the number of the installed COM port.

Now you can open your terminal application and connect it via COMx with the following settings: 115200-8-N-1

This terminal connection can be used for all trace statements from your Embedded Wizard UI applications or for all debug messages from your C code.

Using IAR Embedded Workbench

IMPORTANT

Please take care that the display configuration corresponds to the display connected with your LIZARD board (check LIZARD_DISPLAY_TYPE within the file LIZARD.h). Furthermore, please ensure that the example that you are using has the same size than your connected display.

If you want to use the IAR Embedded Workbench instead of the GCC ARM embedded toolchain, please follow these instructions:

TIP

By default, the external QSPI flash of the STM32 board is used to store string constants, bitmap resources and font resources.

If the flash downloader integrated in IAR Embedded Workbench doesn't support the external flash, the examples can alternatively be flashed using the STM32CubeProgrammer. For more convenience the STM32CubeProgrammer can be integrated to IAR Embedded Workbench as an external tool.

Command and argument are as follows:

$PROJ_DIR$\..\..\FlashDownload\FlashDownload.cmd

$TARGET_PATH$ separateConsole

The subdirectory \Application\Project\EWARM contains a template project that is commonly used for all provided Embedded Wizard examples. All Embedded Wizard examples will store the generated code within the common \Application\GeneratedCode folder.

The generated code of an Embedded Wizard example is imported automatically to the IAR Embedded Workbench project using the Project Connection mechanism.

To establish this automatic project import a post process has to be added to the Profile settings within Embedded Wizard Studio:

Open the desired Embedded Wizard example project.

Select the Profile and set the attribute PostProcess to the file ..\..\..\Application\Project\EWARM\EWARM_ew_post_process.cmd.

After the Embedded Wizard code generation the installed post process will generate a ewfiles.ipcf file, that controls the import to the IAR Embedded Workbench project.

After returning to IAR Embedded Workbench, the latest generated code and the suitable Embedded Wizard Platform Package will be imported to the IAR Embedded Workbench project (depending on the color format and the screen orientation selected in the Embedded Wizard Profile).

If the color format or the screen orientation was changed, please do a complete rebuild of the IAR Embedded Workbench project.

Using Keil MDK-ARM

IMPORTANT

Please take care that the display configuration corresponds to the display connected with your LIZARD board (check LIZARD_DISPLAY_TYPE within the file LIZARD.h). Furthermore, please ensure that the example that you are using has the same size than your connected display.

If you want to use the Keil MDK-ARM toolchain instead of the GCC ARM embedded toolchain, please follow these instructions:

The subdirectory \Application\Project\MDK-ARM contains a template project that is commonly used for all provided Embedded Wizard examples. All Embedded Wizard examples will store the generated code within the common \Application\GeneratedCode folder.

The generated code of an Embedded Wizard example is imported automatically to the Keil MDK-ARM project using the CMSIS PACK mechanism.

The following steps are needed to establish this automatic project import:

Install Tara.Embedded_Wizard_Launcher.x.x.x.pack by double clicking. You will find the file within the subdirectory \Application\Project\MDK-ARM.

Open the desired Embedded Wizard example project.

Select the Profile and set the attribute PostProcess to the file ..\..\..\Application\Project\MDK-ARM\MDK-ARM_ew_post_process.cmd.

After the Embedded Wizard code generation the installed post process will generate a ewfiles.gpdsc file, that controls the Keil MDK-ARM project import.

In Keil MDK-ARM a dialog appears: "For the current project new generated code is available for import". After confirmation, the latest generated code and the suitable Embedded Wizard Platform Package will be imported to the Keil MDK-ARM project (depending on the color format and the screen orientation selected in the Embedded Wizard Profile).

If the color format or the screen orientation was changed, please do a complete rebuild of the Keil MDK-ARM project.

Using STM32CubeIDE

IMPORTANT

Please take care that the display configuration corresponds to the display connected with your LIZARD board (check LIZARD_DISPLAY_TYPE within the file LIZARD.h). Furthermore, please ensure that the example that you are using has the same size than your connected display.

If you want to use the STM32CubeIDE toolchain instead of the GCC ARM embedded toolchain, please follow these instructions:

The subdirectory \Application\Project\STM32CubeIDE contains a template project that is commonly used for all provided Embedded Wizard examples. All Embedded Wizard examples will store the generated code within the common \Application\GeneratedCode folder.

The following steps are needed to establish this automatic project import:

Open the desired Embedded Wizard example project.

Select the Profile and set the attribute PostProcess to the file ..\..\..\Application\Project\STM32CubeIDE\STM32F469-LIZARD\STM32CubeIDE_ew_post_process.cmd.

After the Embedded Wizard code generation the installed post process will adapt the .cproject XML file. All necessary libraries and include paths (depending on the color format and screen rotation) will be set automatically.

The given STM32CubeIDE example under \Application\STM32CubeIDE contains a workspace which has all adaptions for an Embedded Wizard project. For using this within STM32CubeIDE do following steps:

Open STM32CubeIDE and select the directory \Application\Project\STM32CubeIDE as workspace directory.

To import the C project, select the menu item FileImport and choose General - Existing Projects into Workspace and press Next.

Choose Select root directory - Browse and select the directory \Application\Project\STM32CubeIDE\STM32F469-LIZARD.

Press Finish.

To compile the project press the Build button (hammer symbol) within the toolbar.

Choose the menu item RunRun HistoryRun to flash and start the application on the target or choose RunDebug HistoryDebug to flash and debug the application.

If the color format or the screen orientation was changed, please do a clean in STM32CubeIDE.