One of site members, Martin Strouhal, wrote: Today I prepared for you example, how to use DDC with relays connected to DK-EVAL. One of my friends asked me for a sample how relays are working. I choose for this demonstration connect to relay LED diode and simulating e.g. street light. However, my fantasy was working farther and I’ve got an idea when I was looking for LED diode and by the way found RGB LED too. It was good change how to show simulated traffic lights for walkers and demonstrate controlling of color states by switching of different branches instead of simple switching on/off.
This article describes my new SPI library for master MCU. It is based on library published in startup package. I made some changes. At the first, I removed all PIC MCU related lines of code, because of universality of library. Next, I encapsulated all global variables related to SPI state machine to one structure. There are published two versions of library – for AVR-GCC and GCC compiler for ARM version 4.9.3.
IQRF Alliance announces a worldwide contest IQRF Wireless Challenge II. “Test your skills, create a new application for the IQRF wireless technology and compete for valuable prizes totalling 3,700 EUR,” this is the challenge for all the technicians, programmers, developers, and students from all over the world.
A few months ago, I published post about DPA .NET Class. This article describes simple, but effective library used for DPA handling by MCU (UART interface). Published library is independent on the MCU family, but it was written for 32-bit ARM processors with Cortex-M3 core and GNU C compiler.
From OS v3.06D, upgrades can be done by the user oneself, using IQRF IDE v4.30 (menu Tools – Change IQRF OS Wizard) or higher. Downgrades (down to v3.06D or higher) are possible as well. Whole process is very simple and this short article shows you, how to do it.
This article describes simple wireless Dallas one-wire device ROM reader. It is intended as a base code for some more sophisticated access control system. We try some kind of access system in followings articles. Now, we are going to read 1-wire ROM code.