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AVRDUDE - AVR Downloader/UploaDEr

AVRDUDEis a utility todownload/upload/manipulate the ROM and EEPROM contents of AVRmicrocontrollers using the in-system programming technique (ISP).

Documentation

Documentation can be downloaded from thedownload area,or read onlinehere.

History

AVRDUDE has once been started byBrian S. Dean as a private projectof an in-system programmer for the Atmel AVR microcontroller series,as part of the Opensource and free software tools collection available forthese controllers. Originally, the software was written for theFreeBSD operating system,maintained in a private CVS repository, and distributed under the nameavrprog.

Due to the growing interest in porting the software to otheroperating systems, Briandecided to make the project publically accessible onsavannah.nongnu.org. The name change to AVRDUDE has been chosen toresolve the ambiguity with theavrprog utility as distributedby Atmel together with theirAVRstudio software.

In 2022, the project moved from Savannah toGithubto benefit from the tooling that eventually evolved around theGit version control system.

Main features

The major features of AVRDUDE include:

Command-line driven user interface for all downloading and uploading features (including handling fuse bytes), for easy automation e. g. by inclusion into Makefiles.
Interactive examination and modification of various memory regions in so-calledterminal mode. Also offered is an option to modify the operational parameters of an Atmel STK500 board (target voltage, VAref, master clock frequency).
Known to run on all major POSIX-style operating systems, as well as Win32 platforms. By using existing operating system drivers on the POSIX-style systems, secure parallel-port access without root privileges can be maintained. On Win32 platforms, parallel port access requires the previous installation of a driver (giveio.sys) that grants a user process direct access to the IO registers.
Supports a wide range of programming hardware, from cheap ISP plugs that connect the AVR's ISP interface directly to a computer's parallel port (no additional circuitry) or serial port (some additional circuitry needed), more advanced ISP adapters using a buffer/driver chip (like a 74HC373), up to (more complex) serially connected programmers like AVR910-style ISP devices, the Atmel STK500 board, and the Atmel JTAG ICE mkII. Most popular adapters come pre-defined, adding a new parallel-port adapter is as simple as editing a configuration file (no recompilation needed).
Supports Intel Hex, Motorola S-Record, and raw binary files for input and output, as well as direct memory contents specification on the command-line (useful e. g. for fuse bytes). On input, the file format can be auto-detected.
In "terminal mode", the device's memory areas can be examined, and possibly modified. This allows to set fuses interactively, or to modify a few EEPROM cells.

How to get help or report bugs

To get support for AVRDUDE, or get in contact with other users ofthis tool, see theavr-chatmailing list.

People who want to contribute in some way to the project cansubscribe to theavrdude-devmailing list, and get in contact with the developer teamthere.

If you are certain you found a bug in AVRDUDE, you can open abugreport.

There is not much developers' documentation for AVRDUDE so far.There is aDevelopers' Corner withsome random articles.Some more information is available atBrian's private site.

Last modified: Fri Jan 8 09:14:46 CET 2010

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