Atmel AVR

See also: AVR32

AVR Studio

• AVR Studio 4
• GNU avr-gcc
• WinAVR - Precompiled version of avr-gcc for Windows

Projects

Ethernet

• http://tuxgraphics.org/electronics/200606/article06061.shtml

Power Supply

• Digital DC Power Supply
  • Older article by the same person, but including schematics: Part 1 Part 2 Part 3
• A Microcontroller based DC power supply

Issues

WinAVR under Vista

I was having issues with WinAVR under Vista x64. This page provides a replacement DLL: [1]

Programming

Interrupts

Accessing Global Variables

Make sure global variables that will be used/modified by ISRs are declared to be volatile. ^[1] For example,

volatile uint8_t myVariable;

Nested Interrupts

Even if interrupts are disabled, the corresponding interrupt flag may be set by the associated event. Once set, the flag remains set, and will trigger an interrupt as soon as interrupts are enabled. ^[2]

Issues

Compiler warning: "discards qualifiers from pointer target type"

Fix: use "volatile" in function parameter definition. ^[3]

More Information

• AVR Bootloaders

References