luncheonmeat

Hardware

Device PCB was designed using KiCAD 5.1. For more info visit KiCAD website kicad.org

Firmware

Dependencies

sudo apt-get install gcc-avr binutils-avr avr-libc gdb-avr avrdude

Note: ATMega328PB is new revision from 2017. avr-libc may not have support for this device. To add support please see how its done in .devcontainer/Dockerfile.

Build

cd firmware
make

Flashing

Flashing the device using AVR Dragon ISP:

make program

Set fuses this is done only once:

make program-fuses

Note: make will internally run avrdude with correct atributes.

Bare avrdude flashing command:

avrdude -p atmega328pb -P usb -c dragon_isp    -U flash:w:luncheonmeat.hex -U eeprom:w:luncheonmeat.eep

Serial Bootloader

Generating defines.h file:

cd firmware/bootloader
./preprocessor.sh atmega328pb 2048 PORTB PINB0 8000000 19200
make
make program
make program-fuses

Reading target fuses:

avrdude -p atmega328pb -P usb -c dragon_isp -U efuse:r:-:h

To enter bootloader hold ''5'' button and reset the device.

Resources

• fuses calculator