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Tutorial for learning assembly language for the AVR-Single-Chip-Processors (AT90S, ATmega and ATtiny) from ATMEL with practical examples.

Index

An overview on AVRs and their hardware
A simulator for AVR assembler code
Beginner's assembler courses in different flavours		by instruction types hard- and software for high-level freaks
What are AVRs? For absolute beginners
Learning from applications
59,180 downloads of assembler source code files in 2022 (162 per day)
The five most popular applications: (Sorted by popularity) Random number generation Frequency counter LCD include Stepper motor driver ATtiny13 Signal generator		The five most recently added applications (Applications by category) Thermometers over serial infrared Infrared transmitters with variable frequency Thermometer with ATtiny24 Crystal tone generator with ATtiny25 Xtal divider tn25
	Use of controller internal hardware components in assembler source codes on this webseite		Software algorithms in assembler source codes on this website
Learning Assembler
	Beginner's introduction to AVR assembler language. Also available as complete PDF-document for printing the whole course (Download, 1.1 MB)		A micro beginner course in 14 lectures from simple to complex with an ATtiny13 and an ATtiny24, hard- and software, all on a breadboard, also available in one complete PDF document
	A starter course for beginners introducing hardware of AVRs (mainly ATtiny24) and their software programming in assembler in 11 lectures, utilizes the simulator to visualize effects		A starter course for beginners using the simulator to examine the effect of assembler instructions, also available as a PDF document
	An introduction to binary numbers and binary math with practical code examples for adding, subtracting, multiplying and dividing of binary numbers of any size		Four simple programming examples with extended comments as first steps of a practical introduction to assembler programming: Sense and requirements, Simple programming examples
	Software-Know-How, special assembler commands: LPM, stack jumps, macros		All about timing loops from microseconds over milliseconds and seconds to hours, days and monthes: all you need is a loop, or two, or three ...
	All you need to know about interrupts for beginners, on int vectors, int sources, on int execution and how ints govern the whole program design, a whole new world to learn about		You have one, you use it, you feel addicted to it? If you want to get rid of the Arduino drug, you'll get help to get away from this here.
Tools for programming in assembler
	A command line assembler with extended error checking and commenting, free for download		For convenient operation of the command-line assembler: a window caller including editing the source and include files, viewing the list file, finding errors and editing erroneous lines, etc., for free download here
	How to assemble external source code files How to convert source code from one to another type		Windows software for generating assembler source code files with a standard structure
Advanced assembler programming
	Binary multiplication, division, conversion of number formats and fixed decimals in detail, hardware multiplication		Programming and testing of the hardware of the STK200-Board: EEPROM, external RAM, LCD-display, SIO-interface
Applications in assembler
	Small applications: IR remote control devices, an 8-by-8-LED matrix, a DCF77 synchronized clock, a PCM-to-PWG-decoder, a terminal-controlled frequency generator, a digital signal generator with frequency/pulse-width adjust and LCD, an eggtimer as a gift, a steppermotor controller/driver, a tumbling dice, a LED sequencer and intensity regulator		Connecting a two-line-LCD with a four-line connection to the STK500 programming board with base routines for driving the LCD and a small clock application
	Converting an analog voltage to digital using the STK500 board, the on-board analog comparator and timer/counter 1 as pulse width generator		Connecting a keypad to an AVR and sensing using port connections or with a resistor matrix and an AD converter. Improved versions of the resistor matrix encoder and graphical software tools are also provided there.
	Converting a digital value to an analog voltage using a buffered R/2R network, including wave generation like sawtooth, triangle, sinewave forms and a small tone player application. With R/2R and RC filter calculation pages and software tools.		Re-chargeable battery loader applying an ATmega16
Zipped webpage for offline reading
	The whole webpage for download. After download unzip this file in a separate directory, keeping the pathes.
Statistics on this webpage's popularity
	Statistics on website accesses, source code on these pages and use frequencies for instructions and directives in assembler source code