This repository is split into a series of lessons intended to be followed in order as a tutorial series. The tutorials cover embedded systems programming using the AVR atmega32 microcontroller (though is also applicable to other AVR MCUs). The toolchain used is Linux with gcc-avr for compilation/ assembly and avrdude for flashing the MCU. A Raspberry Pi is used as a programmer in lesson 1, though other programmers are available.
These tutorials assume knowledge of C and assembly programming, as well as basic electronics knowledge. Regarding parts, a Raspberry Pi (or other linux PC and an external AVR programmer); an ATmega32-16PU (or other 8-bit Atmel MCU); a breadboard plus basic electronic components (wires, resistors, LEDs...) and a 5V AC adaptor (e.g. phone charger) are required.
Lesson 1: Setup and LED on. toolchain installation; desktop vs. MCU programming; gcc-avr basics; programming the MCU with avrdude; make an LED turn on.
Lesson 2: Inputs, Interrupts and LED Button. SREG and conditional execution; loops; interrupts; controlling and LED with a button.
Another AVR tutorial series, in C: http://newbiehack.com/MicrocontrollerTutorial.aspx
Instruction set summary for AVR MCUs: http://avr-tutorials.com/sites/default/files/Instruction%20Set%20Summary.pdf
ATmega32 datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/doc2503.pdf
AVR-libc user manual: http://cs.ou.edu/~fagg/classes/general/atmel/avr-libc-user-manual-1.7.1.pdf
All circuit diagrams were drawn using EasyEDA: http://easyeda.com
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