qmk_firmware/keyboards/preonic/rev3_drop/rules.mk

# MCU name
MCU = STM32F303

# Bootloader selection
BOOTLOADER = stm32-dfu

# Build Options
#   change yes to no to disable
#
BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
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
NKRO_ENABLE = yes           # Enable N-Key Rollover
BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
AUDIO_ENABLE = yes          # Audio output
WS2812_DRIVER = pwm
CUSTOM_MATRIX = yes
ENCODER_ENABLE = yes
DIP_SWITCH_ENABLE = yes

# Do not enable RGB_MATRIX_ENABLE together with RGBLIGHT_ENABLE
RGB_MATRIX_ENABLE = no
RGB_MATRIX_DRIVER = WS2812

SRC += matrix.c

LAYOUTS = ortho_5x12