Sometimes is useful to use IQRF TR module as a part of breadboard based prototype circuit. This short article describes two very simple breakout boards for connecting TR modules to breadboard.
Today we start with the 1st part of the series of articles dedicated to writing an optimized code for IQRF platform using CC5X C compiler. This can be useful when there is not enough FLASH or RAM available or if there is a need to have the fastest code as possible.
This article describes temperature and humidity measurement with DHT11 sensor connected to TR module. Circuit diagram is very simple. You need only power supply for sensor and one wire for data line. This line has to be “pull-uped” – sensor has open colector output.
This demo application describes how to connect the IQRF module to the Arduino. Data are transferred over 4-wire SPI bus, IQRF SPI protocol is used. IQRF module works with 3V logic, Arduino can work with 5V or 3V logic. For 3V to 5V logic connection a level converter is required. This article shows two ways for lever convertor implementation:
If you are just in the middle of deep debugging of your IQRF application and you need a simple runtime tracing or debugging tool with a small HW and memory footprint then the following code is just for you. It actually implements minimalistic software UART TX available over any free output MCU pin.
SOS electronic Webinar – Wireless technologies without a long term programming
I tried this example, but I was unsatisfied. This example periodicaly starts temperature conversion and transmition. But if you need more sensors, collision may occur. Fortunately, the improvement is not so complicated.
This is simple illustration how to build easy PWM LED control with IQRF TR module and a few other components. Continue reading