Compile: avr-gcc -Wall -g2 -gstabs -O0 -std=gnu99 -funsigned-char -funsigned-bitfields -mmcu=atmega328p -DF_CPU=1000000UL
Create hex: avr-objcopy -R .eeprom -O ihex lambda.elf lambda.hex
Upload hex: avrdude -pm328p -cjtag2isp -B10 -Uflash:w:lambda.hex:a
Start AVaRICE: avarice -2 -w -B10 -j usb :4242
Start avr-gdb: avr-gdb lambda.elf
Connect to remote: target remote localhost:4242
Set breakpoint: break lambda.c:74
Continue: continue