Stm32 System Workbench

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This is first of many upcoming tutorial articles on STM32 microcontrollers. I am learning and with them I will be sharing what I learn. In this article I will try to explain how to install System Workbench for STM32 or SW4STM32 short. System Workbench for Linux (SW4Linux) SW4Linux IDE integrated in CubeIDE offers a unique environment based on Eclipse that greatly facilitates the development of asymmetric applications on the STM32MP1 SoC, either bare metal or with FreeRtos on the Cortex-M and Linux on the Cortex-A for. SW4STM32: System Workbench for STM32 Introduction. System Workbench for STM32 is a free IDE on Windows, Linux and OS X. Description from ST Microelectronics. The System Workbench toolchain, called SW4STM32, is a free multi-OS software development environment based on Eclipse, which supports the full range of STM32 microcontrollers and associated boards. SW4STM32: System Workbench for STM32; UART - Universal Asynchronous Receiver/Transmitter (serial communication) stm32 IAR-EWARM Example Introduction. IAR Integrated development environment and optimizing C/C compiler for ARM Cortex-M. Description from ST Microelectronics: The IAR-EWARM is a software development suite delivered with ready-made. Importing a System Workbench for STM32 ( SW4STM32 ) project into STM32CubeIDE is done as per the steps described below. The first step in importing a project used in System Workbench for STM32 is to make a copy of the project and place that copy inside the workspace currently being used in STM32CubeIDE. This guarantees that the.

Example

(Note: There are many IDE, toolchain and library which are ready-to-use with STM32. The following setup requires minimal effort to get it work, but it is only one of the many. Feel free to explore others, it is not the purpose of this example to force anyone to use the tools that will be used here.)

IDE installation

System Workbench for STM32: free IDE on Windows, Linux and OS X. It has been built by AC6 and available for download after registration from the OpenSTM32 Community's website.

The IDE itself is based on Eclipse, but comes with some extras for STM32 development like:

  • Ac6 STM32 MCU GCC toolchain
  • OpenOCD and GDB (arm-none-eabi-gdb) with automatically generated debug configurations depending on the target board
  • Built-in options to program or erase chip

To start with STM32 before creating your own board, it is recommended to experiment with a Discovery, a Nucleo or an Eval board, which come with an on-board SWD (Serial Wire Debug) programmer/debugger called ST-Link.

Creating a project

Workbench

This example will use an STM32F4 Discovery kit, which features an STM32F407VG microcontroller. (Any other board can be used as well.)

  1. Open SW4STM32 and create a new C project: File → New → C Project

  2. Give it a name like 'STM32F4_Discovery-Blinky' and from the Project Type list choose the Executable/Ac6 STM32 MCU Project. By default the only available toolchain is Ac6 STM32 MCU GCC. Click Next.

  3. Next step is Debug/Release settings, can be skipped now by clicking Next.

  4. Board selection. Existing boards can be selected as in this example the STM32F4 Discovery or new custom boards can be added.

  5. Next step is Project Firmware configuration. Choose between No firmware, Standard Peripheral Library (SPL) or Hardware Abstraction Layer (HAL). It is questioned which one is more suitable for development, but this question is out of scope in this example. This example will use the HAL library as it is the currently supported by ST Microelectronics. Additional available software tool for HAL is STM32CubeMX, which is an initialization code generator. Also several example applications are available by the STM32CubeFx or STM32CubeLx software packages. Download the target firmware if it's missing and it is recommended select the 'Add low level drivers in the project' and the 'As sources in the application' options. Finally, click Finish.

Blink LED application

As this project has been created with an STM32F4 Discovery, there are already several ready-to-use functions under the /STM32F4_Discovery-Blinky/Utilities/STM32F4-Discovery/ project folder which can be used to interface the Discovery kit's peripherals (accelerometer, audio, LEDs, push button). In this example the void BSP_LED_Init(Led_TypeDef Led) and the void BSP_LED_Toggle(Led_TypeDef Led) functions will be used from the stm32f4_discovery.c file to blink the green LED, which is LED4. To decide which LED is which use the schematics of the Discovery kit.

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The actual pin and port names are already hidden by some #define and enum, use Ctrl + Click to track them.

  1. Inside the main, call the HAL_Init() function which resets all peripherals, initializes the Flash interface and the Systick. (Systick will be used to generate delay for the blinking.)
  2. The system clock have to be configured. It can be done by using the STM32CubeMX clock configuration feature or by the reference manual. In this example the system clock is fed by the internal PLL (Phase Locked Loop), which is sourced by an external 8 MHz crystal oscillator (HSE). Prescalers have been set to achieve the maximum available frequency, which is 168 MHz in case of the F4 Discovery.
  3. Initialization of the peripherals, in this case a GPIO pin.
  4. Inside an endless loop, call the LED toggling and the HAL_Delay() function. HAL_Delay() uses the Systick and generates a delay in miliseconds.
Stm32 System Workbench

The whole code is the following:

Build with the hammer , and download the application by right clicking on the project folder and selecting the Target → Program chip... option.

Another way to download is with using debug. To do so click on the arrow beside the bug icon in the toolbar and open Debug Configuration... menu. Creat a new Ac6 STM32 Debugging configuration and if the C/C++ Application field is empty, fill in the following:

DebugSTM32F4_Discovery-Blinky.elf

System Workbench Ide

Other debug parameters such as the OpenOCD configuration file and the used Telnet and GDB ports are automatically generated and filled in by the framework. Finally, click the Debug button.

Stm32 System Workbench Tutorial


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