Delay is required in most of our micro-controller applications, for example to blink a LED for certain duration or just to pause the micro-controller for short time. The avr-gcc compiler in Atmel Studio comes with delay.h library to make things easy for us, but do we know how it work. No, not until we do some digging inside of the library. In this post we will learn to generate short delay without using library, this will give some basic idea for how the _delay_ms() or _delay_us() works. In this tutorial a Logic Analyzer is used to observe the output of Atmega328 on pin PB5. Circuit configuration for Atmega328 is shown in diagram below. Circuit Configuration Atmega328 has three individual timer/counters identified as TC0, TC1, TC2. TC0 is an 8 bit general purpose timer/counter which can also be used for generating PWM waves, TC1 on other hand is 16 bit timer and can be used for generating PWM. Timer/Counter 2 (TC2) is 8 bit timer with support for PWM generat
USBasp is an in-circuit programmer for Atmel micro-controllers. It is a
nice option if you're just starting with micro-controllers, especially
those from Atmel and aren't willing to spend much on a programmer.
USBasp uses in-circuit programming interface for uploading your compiled
code to the...Read More
Now that you have probably installed the driver for USBasp,
it's time that we move on to mount the basic circuit for Atmega328 and
get it running on the breadboard. You can get a new Atmega328/P
micro-controller or just scavenge one from an Arduino UNO lying around.
Before we mount the circuit on breadboard here's the of components that
are required...Read More
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