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...
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...
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 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...
In this article, we will use a WeSU in some daily common scenarios. In this way, we will propose some case of use of wearable device, testing also its mechanical robustness and its sensitivity.
For our tests we will use the remote data capture feature provided by the smartphone app: this is very useful because it allows to save data and send them to an email address allowing offline post processing. Before starting each test, we need to pair WeSU and our smartphone using bluetooth: launch the application (ST WeSU) then click on START SCANNING (see Fig. 1).
If the continue reading...
HC-SR04 is a commonly used ultrasonic sensor which is capable to detect obstacles in a range of 2-300cm. The sensor looks like a small PCB having two metal cylinders on the front-side and a small circuit on the back-side (see Fig.1).
In this article we will provide a simple demo to use HC-SR04. This requires a preliminary read of the sensor user manual:
HC-SR04 User Manual
The sensor has 4 PIN:
VCC, which must be connected to 5V;
Trig, which is an input PIN to trigger the measurement;
Echo, which is an output PIN which sent out a square wave;
GND, which must be continue reading...