AVR Tutorials

Programming AVR I2C interface

Programming AVR I2C interface

I2C (also referred as IIC or TWI) is widely used interface in embedded applications. Two wire bus in[...]

Serial peripheral interface in AVR microcontrollers

Serial peripheral interface in AVR microcontrollers

Serial Peripheral Interface (SPI) is fastest synchronous communication interface allowing data trans[...]

ADC on Atmega328. Part 2

ADC on Atmega328. Part 2

After we've learned how to performs simple ADC conversions on AVR microcontroller we can move forwar[...]

ADC on Atmega328. Part 1

ADC on Atmega328. Part 1

Microcontrollers are meant to deal with digital information. They only understant '0' and '1' values[...]

Using Standard IO streams in AVR GCC

Using Standard IO streams in AVR GCC

In previous tutorial we learned how to transmit data over USART. By using simple functions we can se[...]

Programming AVR USART with AVR-GCC. Part 2

Programming AVR USART with AVR-GCC. Part 2

In previous part of USART tutorial we have discussed about simplest way of implementing USART transm[...]

Programming AVR USART with AVR-GCC. Part 1

Programming AVR USART with AVR-GCC. Part 1

AVR USART tutorial is gonna be multi-part tutorial as this peripheral is quite complex device and ne[...]

Using watchdog timer in your projects

Using watchdog timer in your projects

All AVR microcontrollers have internal watchdog timer that can be successfully used in your projects[...]

Accessing AVR EEPROM memory in AVRGCC

Accessing AVR EEPROM memory in AVRGCC

AVR microcontrollers have some amount of EEPROM memory on chip. For instance Atmega328 has 1K of byt[...]

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Store constants and arrays in program memory

In many cases our embedded projects have to deal with various constants or arrays that aren't change[...]

When your project grows bigger

When your project grows bigger

Until now we used pretty simple program examples where all code fit in to single file and didn't loo[...]

AVR Timer2 asynchronous mode

AVR Timer2 asynchronous mode

We have almost gone through main modes of AVR timers. It is impossible to review them all in more de[...]

Programming 16 bit timer on Atmega328

Programming 16 bit timer on Atmega328

Atmega328 has one 16 bit timer which is more powerful comparing to 8 bit timers. 16 bit timer is c[...]

8-bit Timer/Counter0 operation modes.Part2

8-bit Timer/Counter0 operation modes.Part2

Previously we have revealed only two Timer/Counter0 modes: Normal and CTC. So far thre are couple mo[...]

8-bit Timer/Counter0 operation modes.Part1

8-bit Timer/Counter0 operation modes.Part1

As our selected Atmega328 microcontroller has three timers, I think it is best to analyze them separ[...]

AVR timers do more than count time

AVR timers do more than count time

Probably Timer/Counters are complex peripherals in microcontrollers, but as fact they are most commo[...]

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Implementing AVR interrupts

Before we go to the code part lets what is needed in order to run interrupts successfully. These co[...]

Basic understanding of microcontroller interrupts

Basic understanding of microcontroller interrupts

Earlier I've made a mistake by referring this tutorial to older AVR family microcontrollers like Atm[...]

Controlling AVR I/O ports with AVR-GCC

Controlling AVR I/O ports with AVR-GCC

Controlling pins is one of the first things to learn when learning microcontrollers. It seems that e[...]

Setting up AVR development platform

Setting up AVR development platform

You can be encouraged to use various types of AVR development tools. Most of them cost money to get [...]

Choosing AVR programmer

Choosing AVR programmer

As we talked earlier there are many AVR programmers to choose. The simplest ones are bitbang program[...]

Things needed before you learn AVR

Things needed before you learn AVR

There are several things you need to do before learning AVR. First of all you need an AVR chip. Bett[...]

AVR at a glance

AVR at a glance

Any AVR microcontroller is an 8 bit computer in a chip designed and manufactured by ATMEL Corporatio[...]

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AVR tutorial. Initial word

AVR family is one of the leading 8 bit microcontrollers in its family. There are many reasons why ma[...]

 

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