qmk_firmware/keyboards/centromere/rules.mk

# MCU name
MCU = atmega32u4

# Processor frequency
F_CPU = 8000000

# Bootloader selection
#   Teensy       halfkay
#   Pro Micro    caterina
#   Atmel DFU    atmel-dfu
#   LUFA DFU     lufa-dfu
#   QMK DFU      qmk-dfu
#   ATmega32A    bootloadHID
#   ATmega328P   USBasp
BOOTLOADER = caterina

# Build Options
#   comment out to disable the options.
#
BOOTMAGIC_ENABLE = no	# Virtual DIP switch configuration
MOUSEKEY_ENABLE = yes	# Mouse keys
EXTRAKEY_ENABLE = yes	# Audio control and System control
CONSOLE_ENABLE = yes	# Console for debug
COMMAND_ENABLE = yes   # Commands for debug and configuration
CUSTOM_MATRIX = yes    # Remote matrix from the wireless bridge
# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
SLEEP_LED_ENABLE = no  # Breathing sleep LED during USB suspend
NKRO_ENABLE = yes		# USB Nkey Rollover
BACKLIGHT_ENABLE = no  # Enable keyboard backlight functionality
MIDI_ENABLE = no 		# MIDI controls
UNICODE_ENABLE = yes 		# Unicode
BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID

USB = /dev/ttyACM0

# upload: build
# 	$(CENTROMERE_UPLOAD_COMMAND)

OPT_DEFS += -DCENTROMERE_PROMICRO

# # project specific files
SRC = matrix.c