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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 works. We will also see how to create a new project and how to modify it in in order to create our own applications.

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

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

How to switch to the development version of ChibiOS

How to switch to the development version of ChibiOS

First time I started to deal with a software a little bit more complicated than the one used to print “Hello World”, I have encountered some words like “versioning”, “revision”, “diff”, “branch”, “trunk”, “checkout” and I heard about certain software like “svn”, “git”, “mercurial”.

Do you keep in mind when your friends knows something you don’t know and they continuously talk about that making you feel like a complete dumbass? Well that was my feeling! It is much simpler than how it seems: there are certain programs which purpose is to keep trace of every single character continue reading...

Mikroe Clicker 2 for STM32 and STLink v2

Mikroe Clicker 2 for STM32 and STLink v2

In this tutorial we are going to see how to connect a STLink v2 debugger to a Clicker 2 for STM32 enabling users to do debugging which could be very useful in development phases. A debugger is a computer program which is used to test and debug another program usually named Target.

In embedded things are slightly different since the code is executed on an external MCU and it is required an interface Computer-MCU. In this case the Target is the MCU and a debugger is composed by the ensemble of a hardware and a software tool. Nonetheless, when the majority of people is continue reading...