README.md

AVR sample projects Arduino Mega 2560 boards (ATMega2560) see the README.md in the parent folder for general information. The main difference with the core of ATMega328p (Arduino Uno) is that the program counter uses 3 bytes (2 only on the ATMega328p).

Be sure that Arduino related libraries are installed: see README.md in parent folder

#first run In the first run, the goil compiler will generate:

• a python build script make.py (to build everything)
• C data structures related to the .oil description (in directory with the name of the .oil file, but with no extension)

If file.oil is the main oil file, and TRAMPOLINE_ROOT is the path to the root of trampoline:

$goil --target=avr/arduino/uno --templates=$TRAMPOLINE_ROOT/goil/templates/ file.oil

#Build The commands builds the binary file (both the .elf and .hex files).

$./make.py

goil will now be called directly from the python build script if the .oil file is updated, it should not be called directly again.

in case of problem, you may need to run ./make.py -j 1 to have the full compilation line.

#flash

The avrdude port should be set as en environmemnt variable. Then, the build script can call avrdude to flash the Arduino:

example (/dev/tty.usbmodem1421 for Mac, but may be /dev/ttyUSB0 with Linux…).

export AVRDUDE_PORT="/dev/tty.usbmodem1421"
./make.py flash

or using avrdude directly:

$avrdude -c arduino -p m2560 -P /dev/tty.usbmodem1421 -U flash:w:AVRTrampolineBin.hex

In this example:

• -p m2560 is for the ATMega2560
• -c wiring is the (ISP programmer on the Arduino Mega) on the USB interface. Type 'avrdude -c toto' to get the full programer list
• -P the device name used in the Arduino User Interface (COMmunication port)