02027ab766
Counting the number of bytes written to a memory and/or verified is not
trivial owing to potential holes in the input file and to potential trailing
0xff bytes in flash memory that are not written per default (but see -A). The
new function memstats(), which is best called just after an input file has
been read into mem->buf/mem->tags, computes the right number of bytes written
and allows easy computation of the number of bytes verified.
This commit also changes the strategy for the default verification after
writing to a chip memory, so that the input file only needs reading once thus
enabling successful verification of stdin input files.
Other, minor changes:
- Improving the grammar of AVRDUDE output, eg, 1 byte written instead of
1 bytes written
- Better description of the input file structure in terms of its sections,
the interval it spans, the number of pages, the number of padding bytes
in pages, and the number of actually cut off trailing 0xff bytes for flash
- Printing <stdin> or <stdout> instead of - in the -U routines
- Option -V no longer needs to be specified before option -U in order to work
As an aside this commit also provides useful helper functions for printing
plural(), inname(), outname() and interval() all of which return strings fit
for printing.
$ avrdude -qp ATmega2560 -c usbtiny -U blink-mega2560+lext-test.hex
avrdude: AVR device initialized and ready to accept instructions
avrdude: Device signature = 0x1e9801 (probably m2560)
avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed
To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: input file blink-mega2560+lext-test.hex auto detected as Intel Hex
avrdude: reading input file blink-mega2560+lext-test.hex for flash
with 1346 bytes in 4 sections within [0, 0x3106d]
using 7 pages and 446 pad bytes
avrdude: writing 1346 bytes flash ...
avrdude: 1346 bytes of flash written
avrdude: verifying flash memory against blink-mega2560+lext-test.hex
avrdude: 1346 bytes of flash verified
avrdude done. Thank you.
$ avrdude -qp ATmega328P -c usb-bub-ii -U sketch-ending-in-ff.hex
avrdude: AVR device initialized and ready to accept instructions
avrdude: Device signature = 0x1e950f (probably m328p)
avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed
To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: input file sketch-ending-in-ff.hex auto detected as Intel Hex
avrdude: reading input file sketch-ending-in-ff.hex for flash
with 2160 bytes in 1 section within [0, 0x888]
using 17 pages and 16 pad bytes, cutting off 25 trailing 0xff bytes
avrdude: writing 2160 bytes flash ...
avrdude: 2160 bytes of flash written
avrdude: verifying flash memory against sketch-ending-in-ff.hex
avrdude: 2185 bytes of flash verified
avrdude done. Thank you.
$ echo "Hello, world..." | avrdude -qp ATmega328P -c ... -U eeprom:w:-:r
avrdude: AVR device initialized and ready to accept instructions
avrdude: Device signature = 0x1e950f (probably m328p)
avrdude: reading input file <stdin> for eeprom
avrdude: writing 16 bytes eeprom ...
avrdude: 16 bytes of eeprom written
avrdude: verifying eeprom memory against <stdin>
avrdude: 16 bytes of eeprom verified
avrdude done. Thank you.
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| .github/workflows | ||
| atmel-docs | ||
| src | ||
| tools | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| AUTHORS | ||
| CMakeLists.txt | ||
| COPYING | ||
| INSTALL | ||
| NEWS | ||
| README.md | ||
| build.sh | ||
README.md
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.