What Is STM32?

What Is STM32?

Life as an engineer or embedded system designer can be fraught with complicated jargon and systems. One of the biggest buzzwords in this industry right now is STM32 — but what exactly is it? In this blog post, we’ll explore everything you need to know about STM32 microcontroller design, from its basic purpose to how it works to why it has revolutionized modern engineering. Whether you’re just starting out as a hardware developer or looking for ways to optimize your current designs, understanding what STM32 does and when you might use it will help ensure that your projects are successful!

What Is STM32?

STM32 is an ARM Cortex-M processor family designed by STMicroelectronics. It offers a wide range of advanced microcontrollers to meet the needs of low-power, cost-sensitive and high-performance applications.

What Is STM32?

The STM32 family features 32-bit ARM Cortex M0 to M4 cores as well as powerful digital signal processing (DSP) capabilities. Many models also include integrated connectivity solutions such as Ethernet, USB and CANbus interfaces. These processors provide a wide range of peripherals for various embedded projects and enable users to design their own custom hardware platforms or utilize off the shelf boards like Arduino or Raspberry Pi. STM32 chipsets are used in many automotive, industrial, medical and consumer products making them very versatile and useful for a wide range of applications.

STM32 processors are also able to communicate with external devices using various communication protocols such as SPI, I2C, UART, etc which allows developers to incorporate additional features into their designs. STM32 chipsets offer a reliable, low-cost solution for many embedded projects. They are easy to use and provide powerful performance capabilities in a small form factor making them ideal for embedded design projects. With the ability to choose from different models based on application requirements, the STM32 family is sure to meet your specific needs. [1]

Where to Use STM32?

STM32 microcontrollers offer a wide range of capabilities and features, making them ideal for use in many different types of applications. These microcontrollers are used in consumer products such as appliances, remote controls, motor control systems, medical devices, gaming consoles, home automation systems and more.

They’re also used in industrial applications such as factory automation systems, transportation systems and robotic control systems. STM32 microcontrollers are also commonly used in aviation and aerospace applications due to their superior performance and reliability. In short, STM32 microcontrollers can be found almost anywhere that requires high-performance electronics with reliable operation.

Pros of STM32

One of the top advantages of the STM32 is its low power consumption. This makes it ideal for use in battery-driven applications, as it can operate with very little energy and extend product lifetime. Additionally, all of STM32 controllers come with a rich set of integrated peripherals such as USB, CAN controllers, DMA controllers, ADC and DAC converters, timers and many more. These on-board peripherals enable simpler and faster development cycles compared to using external components.

Additionally, most of these embedded features are available across the entire range of STM32 microcontrollers which ensures that code written for one variant of an application can easily be ported to another device without having to rewrite any code.

Pros of STM32

Cons of STM32

Despite the benefits, STM32 microcontrollers also have some drawbacks. For example, due to their small size and limited resources, they will not be suitable for complex or large-scale applications that require a lot of processing power.

Additionally, they are not as easy to use with external peripherals as other microprocessors which can make development more difficult. Finally, some of these controllers only support specific modes of operation making them somewhat inflexible in certain circumstances.

Overall however, the STM32 remains one of the most popular microcontrollers available today due to its low cost and reliability. Its wide range of features and flexibility make it an ideal choice for many embedded systems applications. [2]

How to Use STM32?

Using STM32 microcontrollers is a relatively easy process. The basic steps for setting up and programming an STM32 MCU are as follows:

  1. Install the necessary software and appropriate drivers. STM32CubeIDE, which has been developed specifically for STM32 microcontrollers, is one of the most popular choices among developers. It includes everything you need to develop applications with ease, including an Eclipse-based IDE, project manager, source code editor, build automation tools and debugging capabilities. Additionally, you will need to install the proper USB driver on your computer to ensure that your MCU communicates correctly when connected via USB cable or other interface device.
  2. Connect the STM32 board to the computer via USB cable or other interface device. Once connected, you can begin programming your board by either uploading code directly to it, or writing code in an IDE and compiling it before sending it to the board.
  3. Program test your application. This process involves writing code to the particular application that you wish to run on the STM32 MCU and then testing it and making any necessary adjustments until you are satisfied with the performance of the software on the board.
  4. Deploy your application onto its target platform, such as a robot, drone, embedded system or other device– once you have tested your application thoroughly on the STM32 MCU development board itself, you can deploy it onto its intended target platform.

With the easy-to-use development environment provided by STM32, and the wide range of connectivity options available for use with these boards, you can begin developing applications in a matter of minutes! [3]

How to Use STM32?

Common Challenges with STM32

The STM32 microcontroller family is one of the most popular and widely used for embedded computing applications. Despite its popularity, however, it’s not without its challenges. Here are some common issues faced when working with STM32:

  • Compatibility: Different models and series within the STM32 family can have different hardware features that make them incompatible with one another. This means that software written to work on one model may not necessarily be able to run on another model in the same family.
  • Documentation: The amount of available documentation on the use and programming of these microcontrollers varies across the board and can sometimes be difficult to find or understand. Additionally, some of the more advanced topics require a deeper understanding of the microcontroller’s architecture and can be difficult to learn.
  • Cost: While the cost of STM32 microcontrollers is usually very reasonable, some models can be expensive due to their specialized features or high-end specifications. For example, higher-end STM32s with more memory and faster clock speeds may have a hefty price tag attached.
  • Debugging: Debugging software for the STM32 platform can sometimes be difficult to find or use. In addition, debugging errors that arise from using certain features on the microcontroller can be tricky to identify and resolve. [4]

STM32 vs Arduino

The STM32 and Arduino are two of the most popular microcontrollers for embedded systems. Both have their advantages and disadvantages, so it is important to be aware of how each one can be used in different applications.

STM32s are 32-bit ARM Cortex-M microcontroller platforms. They offer high performance, low power consumption, a wide range of peripherals, good real-time capabilities, an open development environment and many options in terms of community support and tools. This makes them suitable for use in complex industrial or consumer electronics applications.

Arduinos are 8-bit AVR microcontrollers that can also function as general purpose input/output (GPIO) pins on a single board. While not as powerful as STM32s, Arduinos are cheaper and easier to use. They offer a wide range of sensors, inputs and outputs, an easy-to-use development environment and plenty of community support from the Arduino user base. This makes them great for entry level projects or hobbyist applications.

In conclusion, both the STM32 and Arduino platforms can be used in embedded systems depending on the requirements of the application. The STM32 is more suitable for complex industrial or consumer electronics applications due to its higher performance and power consumption while the Arduino is better suited to simple hobbyist projects or entry level applications due to its low cost and ease of use.

STM32 vs Arduino

Which Language Is Used For STM32?

The STM32 is a family of microcontrollers from ST Microelectronics. The language used for programming these microcontroller boards is usually C or C++, but other languages such as Rust, Python, and JavaScript are becoming more popular as well.

Depending on the board model and configuration, additional specialized libraries may be necessary to program the board. Additionally, there are many development tools available to help with writing and debugging code for STM32 microcontrollers.

With these tools, developers can quickly create and deploy applications on their platform of choice. This makes developing applications for STM32 microcontrollers much easier than before. With all the different options available, developers can ensure they get the most out of their projects based on their needs.

Overall, STM32 microcontrollers are a powerful and versatile tool for developers who want to create sophisticated applications with minimal effort. With the right language, development tools, and libraries, the possibilities are endless! [5]

Is It Hard To Learn STM32?

It depends on your background and how much time you are willing to dedicate to learning it. STM32 is a 32-bit microcontroller architecture developed by STMicroelectronics, which offers a high performance, low power consumption and multiple functionalities. If you have some experience with microcontrollers, then the learning curve is not too steep. However, if this is your first foray into embedded systems programming then you will likely find it more challenging. The best way to get started with STM32 would be to purchase development boards such as Nucleo or Discovery kits and work through tutorials and projects provided by the manufacturer.

Is It Hard To Learn STM32?


What is the STM32 used for?

The STM32 is a range of 32- microcontrollers from STMicroelect. They are typically used in embedded systems applications, such as industrial automation, medical devices, consumer electronics, etc., for and monitoring various tasks. The STM family includes different types of microcontrollers with varying performance, memory sizes and peripherals that meet the needs of different applications.

What advantages does the STM32 offer?

The STM32 offers a number of advantages including its low cost; wide variety of available packages (including BGA and LQFP); high processing power; small form factor; real-time abilities; advanced features such as Ethernet connectivity, USB OTG capabilities and CAN bus support; and the availability of extensive development tools.

What type of code can be run on STM32?

The STM32 can run a variety of programming languages, including C/C++ and assembly language. The processor core used in the STM32 is ARM Cortex-M, which is a popular architecture for embedded applications. This means that there are many open source libraries available for use with the STM32 and that developers have access to many existing code examples for developing their own applications.

What kind of projects can be developed with an STM32?

The wide range of peripherals available on the STM32 makes it suitable for a number of different applications, ranging from home automation systems to industrial monitoring solutions. Examples of projects that can be developed with an STM32 include home automation systems, security systems, medical devices, consumer electronics and automotive applications.

What types of development boards are available for the STM32?

A number of development boards for the STM32 are available on the market. These development boards allow developers to quickly get started developing their applications without having to design a custom board. Development boards usually come with pre-programmed firmware and a range of debugging tools such as data logging capabilities and debugging options. Popular development boards include Arduino’s Nucleo line, STMicroelectronics’ own Discovery kits and more general-purpose evaluation boards like Adafruit’s Feather M0 or Maple Mini.

Is the STM32 supported in the Arduino IDE?

Yes, the STM32 is supported in the Arduino IDE. In order to use an STM32 microcontroller with the Arduino IDE, users need to install a package for their device then select it from the Boards. Additionally, some development boards such as Nucleo come pre-programmed with a bootloader so that they can be used with the Arduino IDE without any additional installation steps.

Is the STM32 easy to program?

The STM32 is one of the most popular embedded controllers available today and is widely used in many applications. As such, there are plenty of tutorials and code examples available online which makes programming and debugging this chip relatively straightforward compared to other microcontrollers. Additionally, the popular Arduino IDE is compatible with the STM32 which makes programming it even simpler.

Can the STM32 be used with a Raspberry Pi?

Yes, the STM32 can be connected to a Raspberry Pi via its GPIO pins. This allows users to use their Raspberry Pi as an interface between their applications and external hardware devices while still being able to take advantage of the processing power of the STM32. Additionally, many libraries and tools are available for connecting an STM32 to a Raspberry PI making this setup easier than ever.

Can STM32 use C++?

Yes, STM32 microcontrollers can be programmed using C++. The C++ language allows for efficient code writing and provides features needed for complex development projects.

STM32 also supports the GNU Compiler Collection (GCC) compiler, which is designed specifically for embedded devices such as the STM32 family of microcontrollers. This allows developers to write C++ code with ease and have it apply to their hardware project. With this support, developers are able to take advantage of all the benefits of C++ while programming their STM32-powered device.

Is STM32 a PLC?

No, STM32 is not a Programmable Logic Controller (PLC). PLCs are typically used in industrial environments to provide hardware-level control of complex processes. The STM32 family of microcontrollers are designed for general purpose applications and provide an integrated processor that includes memory, peripherals, and input/output capabilities. They can be programmed using a variety of programming languages including C++ for more advanced development tasks. While the STM32 microcontroller family does not have the same capabilities as a PLC, it provides an excellent platform for developing embedded devices with powerful features.

Useful Video: What is STM32?


When it comes to developing applications, STM32 is a highly popular choice for designers. With its wide range of features, high performance and low-power capabilities, it is the perfect solution for creating cost-effective, innovative solutions. Furthermore, with its support for multiple development tools and operating systems as well as its compatibility with various communications protocols, STM32 provides an ideal platform for data acquisition and communication solutions. With all these features in mind, it’s no wonder why STM32 is so widely used by engineers across the globe.


  1. https://www.st.com/en/microcontrollers-microprocessors/stm32-32-bit-arm-cortex-mcus.html
  2. https://medium.com/theteammavericks/a-beginners-guide-to-developing-on-stm32-b7fd38966aa0
  3. https://predictabledesigns.com/introduction-to-programming-stm32-arm-cortex-m-32-bit-microcontrollers/
  4. https://www.theengineeringknowledge.com/introduction-to-stm32-microcontroller/
  5. https://www.igi-global.com/dictionary/design-of-a-controller-with-time-response-specifications-on-stm32-microcontroller/46010