30041e3f5f
As the address bit numbers in the SPI opcodes are highly systematic, they don't really need to be specified. Each bit can therefore be described as one of the characters 0 (always 0), 1 (always 1), x (don't care, but will be set as 0), a (a copy of the correct bit of the byte or word address of read, write, load, pagewrite or load extended address command of memories with more than one byte), i (input bit for a load/write) or o (output bit from a read). The bits therefore do not need to be individually separated. If a string in the list of strings that describe an SPI opcode does *not* contain a space *and* is longer than 7 characters, it is interpreted as a compact bit-pattern representation. The characters 0, 1, x, a, i and o will be recognised as the corresponding bit, whilst any of the characters ., -, _ or / can act as arbitrary visual separators, which are ignored. Examples: loadpage_lo = "0100.0000--000x.xxxx--xxaa.aaaa--iiii.iiii"; loadpage_lo = "0100.0000", "000x.xxxx", "xxaa.aaaa", "iiii.iiii"; loadpage_lo = "0100.0000", "000x.xxxx.xxaa.aaaa", "iiii.iiii"; loadpage_lo = "0100.0000-000x.xxxx--xxaa.aaaa-iiii.iiii"; loadpage_lo = "0100.0000/000x.xxxx/xxaa.aaaa/iiii.iiii"; The compact format is an extension of the current format, which remains valid. Both, the compact and the traditional specification can be mixed in different strings, albeit not in the same string: load_ext_addr = "0100.1101", "0000.0000.0000", "0 0 0 a16", "0000.0000";
AVRDUDE
AVRDUDE - AVR Downloader Uploader - is a program for downloading and uploading the on-chip memories of Microchip’s AVR microcontrollers. It can program the Flash and EEPROM, and where supported by the programming protocol, it can program fuse and lock bits. AVRDUDE also supplies a direct instruction mode allowing one to issue any programming instruction to the AVR chip regardless of whether AVRDUDE implements that specific feature of a particular chip.
AVRDUDE was originally written in 2003 by Brian S. Dean. Since 2006, AVRDUDE has been maintained by Jörg Wunsch, with the help of various contributors.
The latest version of AVRDUDE is always available here:
https://github.com/avrdudes/avrdude
Documentation
Documentation for current and previous releases is on Github Pages.
Getting AVRDUDE for Windows
To get AVRDUDE for Windows, install the latest version from the Releases page.
Alternatively, you may build AVRDUDE yourself from source.
Getting AVRDUDE for Linux
To install AVRDUDE for Linux, install the package avrdude by running the following commands:
sudo apt-get install avrdude
Alternatively, you may build AVRDUDE yourself from source.
Getting AVRDUDE for MacOS
On MacOS, AVRDUDE can be installed through Mac Ports.
Alternatively, you may build AVRDUDE yourself from source.
Using AVRDUDE
AVRDUDE is a command-line application. Run the command avrdude without any arguments for a list of options.
A typical command to program your HEX file into your AVR microcontroller looks like this:
avrdude -c <programmer> -p <part> -U flash:w:<file>:i
For instance, to program an Arduino Uno connected to the serial port COM1 with a HEX file called blink.hex,
you would run the following command:
avrdude -c arduino -P COM1 -b 115200 -p atmega328p -D -U flash:w:objs/blink.hex:i
There are many different programmers and options that may be required for the programming to succeed.
For more information, refer to the AVRDUDE documentation.