1. convert to bin file:
CP = arm-none-eabi-objcopy
CPFLAGS = -Obinary
$(CP) $(CPFLAGS) main.out main.bin
2. convert to elf and hex file:
CP = arm-none-eabi-objcopy
CPFLAGS = -O ihex
$(CP) $(CPFLAGS) main.out main.elf
3. convert to elf and hex file:
CP = arm-none-eabi-objcopy
CPFLAGS = -O ihex
$(CP) $(CPFLAGS) main.out main.hex