AVR Microcontroller Class 2011

Syllabus, course material, homeworks, photos, etc from an Introduction to Microcontrollers with AVR chips class can be found here.

Also see (and contribute to) Useful AVR Links Or check out the old version of the course AVR Microcontroller Class 2009

Class 0: Introduction and Setup

Covers: What the AVRs are, what all the pins do, what they can do for you. A brief tour of the toolchain, and getting your firmware up and running on the chip. Reading the datasheets. How to make chips speak digital to the outside world, pin-by-pin. Just enough C programming fundamentals to make it work.

Slides: Media:avr2011_class0.pdf

Lab: Building the kit and running a test LED flasher.

For detailed info on the class kit, see Avr2011_kit. For detailed info programming the class kit, see Avr2011 Programming The Kit.

Demo Code: Media: LED_Demo.tgz

Homework: More soldering, and Cylon Eyes. Optional extra credit: Simple POV toy (hint, make the timing around 2ms between updates and swing your arms). Super bonus points: Make a neat POV toy.

Resources:

• ATmega48P Datasheets (get both): ATmega48P Summary Datasheet and The Long ATmega48P Datasheet
• Bootloader appnote [1]
• Installing AVR Toolchain

Class 1: Digital and Serial I/O

Interfacing with the real world is the soul of microcontrolling.

Covers: Gathering simple data from the world, and learn how to spit it back out. A serial link with your computer enables all sorts of tricks, and enables the microcontroller version of printf debugging. Some boolean logic comes in handy here. Along the way, we'll learn a bunch about debouncing switches.

Slides: Media:avr2011_class1.pdf

Labs: More Cylon Eyes, All sorts of button-pressing demos, ASCII-to-binary keymapper, General-purpose serial LED display

Demo Code: Media: avr2011_class1_demoCode.tgz

HW: Ghetto logic probe and analyzer: read input on (say) PORTD, write out the value of PIND over serial, interpret/log/whatever using your laptop

Resources:

• More than you ever wanted to know about debouncing: A Guide to Debouncing

Class 2: ADC and PWM: "Analog" I/O

Covers: Learn about ways to fake analog data into and out of your microcontroller. We'll learn how to switch logic states fast to emulate an analog output, and how to use the built-in analog-to-digital converters to measure the complex real-world.

Labs: Auto-dimming LEDs, a better organ, servo motor driving, ghetto oscilloscope

Homework: Basic light-level data logger or battery charger/discharger

Class 3: Interrupts and Timers

Covers: Interrupts call subroutines when certain conditions are true. Timers and counters let you time and count events. Together, they take a lot of the programming burden off your shoulders, and enable really cool stuff. Additionally, you're a step closer to building that real-time operating system you've always wanted.

Labs: Yet another push-button organ, frequency counter, capacitive sensing

Homework: Capacitive touch-switch. Optional "theremin"

Class 4: EEPROM, PROGMEM, ?, Profit.

Covers: PROGMEM lets you use the program memory to store lots of (constant) data. EEPROM is like flash -- there's not much of it, but it stays around when you power off. We'll also cover simple state machines and menu-driven interfaces here.

Labs: Arbitrary waveform generation by direct-digital synthesis, and a menu system to run it

Homework: Not sure yet...

Class 4: I2C, USB, SD Cards, GPS

Covers: Learning to use other people's code and tie it in to our packages. Interfacing with all sorts of random devices for fun and profit.

Labs: I'll be providing example code interfacing with all sorts of external gear. Pick and choose whichever you'd like to implement.

Homework: None. It's project time! Start thinking up what you'd like to do here...