qmk_firmware/keyboards/bioi/morgan65/rules.mk

# Processor frequency
F_CPU = 8000000

SRC += usart.c \
       ble.c \
       main.c

OPT_DEFS += -DPROTOCOL_BLE
OPT_DEFS += -DUART_RX1_BUFFER_SIZE=16 -DUART_TX1_BUFFER_SIZE=16
OPT_DEFS += -DUSART1_ENABLED

# Build Options
#   change yes to no to disable
#
BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
MOUSEKEY_ENABLE = no        # Mouse keys
EXTRAKEY_ENABLE = yes       # Audio control and System control
CONSOLE_ENABLE = no         # Console for debug
COMMAND_ENABLE = yes        # Commands for debug and configuration
NKRO_ENABLE = no            # Enable N-Key Rollover
BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
AUDIO_ENABLE = no           # Audio output
LTO_ENABLE = yes            # Reduce firmware size

VIA_ENABLE = yes            # VIA support should be enabled here due to the main() loop will be compiled first.