Welcome on PLAY Embedded

On PLAY Embedded you can find useful resources to get started with embedded systems: media, examples and accurate descriptions are also provided. Come on, learn by doing!

Wide box Tiny box List
Ascent Descent

Using STM32 USART with ChibiOS Serial Driver

The serial communication in asynchronous mode is one of the simplest and most used methods to exchange data between a microcontroller and other devices. Such kind of communication can be achieved through a Universal Synchronous/Asynchronous Receiver Transmitter (or USART) as well as UART peripheral which actually is a subset of USART. Each STM32 microcontroller is equipped with multiple instances of these peripherals (from 2 up to 8) depending on the microcontroller model.

In this article, we are going to take an overview of serial communication protocols and peripherals continue reading...

Using STM32 GPIO with ChibiOS PAL Driver

The STM32 is equipped with an extremely flexible General Purpose Input Output (or GPIO) peripheral allowing to configure each Input/Output independently. The IO is the simplest interface between the STM32 and the outside world.

As we said in the article “From 0 to STM32“, there are many versions of the same peripherals across the various STM32’s sub-families and this is way each sub-family usually has its own Reference Manual. In this document it is possible to find all the functional information about GPIO and reading many RM we can notice that GPIO peripheral has three continue reading...

A close look to ChibiOS demos for STM32

A close look to ChibiOS demos for STM32

In this article, we are going to take a deep look to ChibiOS default demos explaining how they work. We will also see how to create a new project and how to modify it in in order to create our own applications.

A ChibiOS’ default demo is usually composed of some different folders and files. For example, in figure, we can see the resources of the default demo for STM32 Nucleo F401RE. In general, all the ChibiOS’ projects are characterized by similar anatomy.

All demos have some folders, some configuration headers, a source file named main.c and a makefile. Additional continue reading...

Developing on STM32: introducing ChibiStudio

Developing with STM32 introducing ChibiStudio

In this article, we are going to set-up a ready-to-use Eclipse-based toolchain named ChibiStudio for the development on STM32. We will also explore this development toolchain explaining some basic operations necessary for daily development. So we will introduce the ChibiOS project, we will setup ChibiStudio taking a tour of some parts of it, we will import some ready to use projects and perform our first flash and run. Note that to proceed with this tutorial is necessary the installation of ST-Link drivers: this procedure has been shown in the previous article From 0 to continue reading...

From 0 to STM32

From 0 to STM32

Nowadays, we are surrounded by smart objects capable to do incredible things. These objects, known as Smart Things, are now able to communicate over different wired and wireless communication channels. The obvious consequence is that these objects are able to get and to push data through the Internet: this phenomenon, this network of Smart Things, is commonly known as the Internet of Things or IoT. The spreading of the IoT is substantially due to two main con-causes:

the evolution of Microcontrollers which are increasing their performances while their price is continue reading...