Avr-gcc
From Attie's Wiki
(Difference between revisions)
Line 22: | Line 22: | ||
<h2>makefile</h2> | <h2>makefile</h2> | ||
− | + | <h3>simple</h3> | |
+ | Just produces the .elf and .hex file. Also optimizes for space (HUGE difference) | ||
<pre> | <pre> | ||
all: | all: | ||
− | avr-gcc avr.c -mmcu=atmega168 -o example.elf -Wall | + | avr-gcc avr.c -mmcu=atmega168 -o example.elf -Wall -Os |
avr-objcopy -j .text -O ihex example.elf example.hex | avr-objcopy -j .text -O ihex example.elf example.hex | ||
avrdude -c buspirate -P /dev/ttyUSB1 -x speed=3 -p m168 -U flash:w:example.hex | avrdude -c buspirate -P /dev/ttyUSB1 -x speed=3 -p m168 -U flash:w:example.hex | ||
</pre> | </pre> | ||
− | + | <h3>complex</h3> | |
+ | produces .o, .asm, .map and .lst files too | ||
<pre> | <pre> | ||
all: | all: |
Revision as of 01:00, 25 March 2010
How to setup avr-gcc and get compiling for an Arduino!
$ yum install avr-gcc avr-libc avr-binutils avrdude
Contents |
avrdude
For ATMega168:
$ avrdude -c buspirate -P /dev/ttyUSB1 -x speed=3 -p m168
For ATMega328p:
$ avrdude -c buspirate -P /dev/ttyUSB1 -x speed=3 -p m328p
Terminal mode: -t
. Use command part
to see detailed part information.
To upload file: -U memtype:op:filename[:format]
makefile
simple
Just produces the .elf and .hex file. Also optimizes for space (HUGE difference)
all: avr-gcc avr.c -mmcu=atmega168 -o example.elf -Wall -Os avr-objcopy -j .text -O ihex example.elf example.hex avrdude -c buspirate -P /dev/ttyUSB1 -x speed=3 -p m168 -U flash:w:example.hex
complex
produces .o, .asm, .map and .lst files too
all: avr-gcc -g -mmcu=atmega168 -c avr.c -Wa,-alh,-L -o avr.o > avr.asm avr-gcc -g -mmcu=atmega168 -Wl,-Map,example.map -o example.elf example.o avr-objdump -h -S example.elf > example.lst avr-objcopy -j .text -j .data -O ihex example.elf example.hex avrdude -c buspirate -P /dev/ttyUSB1 -x speed=3 -p m168 -U flash:w:example.hex
other commands
avr-size example.elf
resources
http://arduino.cc/en/Hacking/PinMapping168
https://www.mainframe.cx/~ckuethe/avr-c-tutorial/
http://hintshop.ludvig.co.nz/show/buspirate-avr-programming/
http://itp.nyu.edu/physcomp/uploads/6pinAVRproghead.jpg
http://dangerousprototypes.com/bus-pirate-manual/