Explore ATtiny Microcontrollers using C and Assembly Language Web Links

On this page are web links from the book Explore ATtiny Microcontrollers using C and Assembly Language for easy access to referenced websites.

The book has a web page at Elektor for Explore ATtiny Microcontrollers using C and Assembly Language.

Scroll down to find the chapter and section that contains the link that you are looking for, or use the links directly below to jump to the desired chapter on this page.

Introduction

Microchip, Atmel, Microchip Studio and Atmel Studio

In 2016, Microchip (www.microchip.com) bought Atmel and is now the owner and manufacturer of AVR microcontrollers.

Accompanying Resources

Accompanying resources, such as the source code from this book, is available for download from the publisher’s website www.elektor.com where the book can be searched for by name or ISBN number to find its web page containing the downloadable resources. Additional resources can be found on the author’s website at wspublishing.net where the book name can be clicked to find its page and resources.

Chapter 1

No links in this chapter.

Chapter 2

2.1 Install Microchip Studio

2.1.1 Download Page and Software Version

Download Microchip Studio from:
www.microchip.com/en-us/development-tools-tools-and-software/microchip-studio-for-avr-and-sam-devices
The exact version of Microchip Studio used at the time of writing was:
Microchip Studio for AVR and SAM Devices 7.0.2542 Offline Installer
934 MB, date published November 2020

2.1.2 Newest Software Version

After the above version of Microchip Studio is replaced by a newer version, it will be available from the Downloads Archive for AVR and SAM:
www.microchip.com/en-us/development-tools-tools-and-software/avr-and-sam-downloads-archive

Chapter 3

3.2 AVR Instruction Set

ww1.microchip.com/downloads/en/DeviceDoc/AVR-Instruction-Set-Manual-DS40002198A.pdf (Search the internet for “AVR instruction set manual” if this link changes and does not work, or to find if a newer version of the manual is available)

ATtiny25/45/85 datasheet: ww1.microchip.com/downloads/en/devicedoc/atmel-2586-avr-8-bit-microcontroller-attiny25-attiny45-attiny85_datasheet.pdf
(Search the Internet for “ATtiny25 datasheet” if this link changes and does not work)
ATtiny25 web page: www.microchip.com/en-us/product/ATtiny25
ATtiny45 web page: www.microchip.com/en-us/product/ATTINY45
ATtiny85 web page: www.microchip.com/en-us/product/ATtiny85

ATtiny13 datasheet: ww1.microchip.com/downloads/en/DeviceDoc/doc2535.pdf
(Search the Internet for “ATtiny13 datasheet” if this link changes and does not work)
ATtiny13 web page: www.microchip.com/en-us/product/ATtiny13

ATtiny13A datasheet: ww1.microchip.com/downloads/en/DeviceDoc/ATtiny13A-Data-Sheet-DS40002307A.pdf
(Search the Internet for “ATtiny13A datasheet” if this link changes and does not work)
ATtiny 13A web page: www.microchip.com/en-us/product/ATtiny13A

Chapter 4

No links in this chapter.

Chapter 5

No links in this chapter.

Chapter 6

6.8 AVR Instruction Encoding

If you have not already downloaded this manual, find it at:

ww1.microchip.com/downloads/en/DeviceDoc/AVR-Instruction-Set-Manual-DS40002198A.pdf (Search the Internet for “AVR instruction set manual” if this link changes and does not work)

Chapter 7

7.2 Addition

7.2.1 ADD – Add without Carry

For those who are interested in how the half carry flag is used, refer to the article:
en.wikipedia.org/wiki/Half-carry_flag

Chapter 8

No links in this chapter.

Chapter 9

9.5 Further Reading

Documentation for the AVRASM2 AVR assembler can be found on the Microchip website in PDF format at: ww1.microchip.com/downloads/en/devicedoc/40001917a.pdf

Chapter 10

10.3 Calling an Assembly Subroutine from C Code

This information is available for the avr-gcc compiler in an application note called Atmel AT1886: Mixing Assembly and C with AVRGCC available from:
ww1.microchip.com/downloads/en/appnotes/doc42055.pdf

Chapter 11

No links in this chapter.

Chapter 12

12.1 AVR Assembler Programs

12.1.3 The AVRA Assembler

The source code for the AVRA project is available on GitHub at:
github.com/Ro5bert/avra

12.2 The GNU C Toolchain

These toolchains can be downloaded from:
ww.microchip.com/en-us/development-tools-tools-and-software/gcc-compilers-avr-and-arm

12.3 Where to from Here?

12.3.4 Assembly Language Resources

One site worth looking at is www.avrfreaks.net which is a forum for AVR enthusiasts.

Appendix A

A.3 External Programmer Setup

A.3.1 Install a Driver

A.3.1.1 USBasp Driver

Links to firmware, drivers, and other information on the USBasp can be found on the web page of the designer of this device, Thomas Fischl, at www.fischl.de/usbasp/

A driver installation tool called Zadig is used to install a driver for the USBasp on a Windows computer. Go to zadig.akeo.ie and download the Zadig executable file by clicking the link under the Download heading on the web page.

A.3.1.2 USBtinyISP Driver

The USBtinyISP was developed by Adafruit where the documentation and more information on the programmer can be found at learn.adafruit.com/usbtinyisp

A link to the Adafruit driver for the USBtinyISP can be found on the USBtinyISP drivers page at learn.adafruit.com/usbtinyisp/drivers

A.3.1.3 Arduino Uno Sketch

These instructions were tested on a genuine Arduino Uno R3 board from www.arduino.cc. Download the Arduino IDE from www.arduino.cc/en/software and install it to the host computer. Find installation instructions at www.arduino.cc/en/Guide for installing the IDE.

A.3.2 Download and Install avrdude

Visit download.savannah.gnu.org/releases/avrdude/ and scroll down the page to find the newest version of avrdude.

If you have 7-Zip (from www.7-zip.org) ...

A.3.4 Programming Parameters

A.3.4.1 Documentation for avrdude

Documentation in the form of a PDF file for avrdude that contains more information on using avrdude can be found at download.savannah.gnu.org/releases/avrdude/ which contains PDF files for each version of avrdude.

A.3.4.2 Parameters for avrdude Explained

This text file can be edited using any text or code editor, and the entry from lists.nongnu.org/archive/html/avrdude-dev/2009-08/msg00005.html added to it.