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diff --git a/builddefs/mcu_selection.mk b/builddefs/mcu_selection.mk
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+MCU_ORIG := $(MCU)
+
+ifneq ($(findstring MKL26Z64, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m0plus
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 6
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = KINETIS
+ MCU_SERIES = KL2x
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/ports/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= MKL26Z64
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/ports/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= kl2x
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= PJRC_TEENSY_LC
+endif
+
+ifneq ($(findstring MK20DX128, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = KINETIS
+ MCU_SERIES = K20x
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/ports/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= MK20DX128
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/ports/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= k20x5
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= PJRC_TEENSY_3
+endif
+
+ifneq ($(findstring MK20DX256, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = KINETIS
+ MCU_SERIES = K20x
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/ports/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= MK20DX256
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/ports/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= k20x7
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= PJRC_TEENSY_3_1
+endif
+
+ifneq ($(findstring MK66FX1M0, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = KINETIS
+ MCU_SERIES = MK66F18
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/ports/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= MK66FX1M0
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= MK66F18
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= PJRC_TEENSY_3_6
+endif
+
+ifneq ($(findstring STM32F042, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m0
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 6
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32F0xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= STM32F042x6
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32f0xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= GENERIC_STM32_F042X6
+
+ USE_FPU ?= no
+
+ # UF2 settings
+ UF2_FAMILY ?= STM32F0
+
+ # Stack sizes: Since this chip has limited RAM capacity, the stack area needs to be reduced.
+ # This ensures that the EEPROM page buffer fits into RAM
+ USE_PROCESS_STACKSIZE = 0x600
+ USE_EXCEPTIONS_STACKSIZE = 0x300
+endif
+
+ifneq ($(findstring STM32F072, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m0
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 6
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32F0xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= STM32F072xB
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32f0xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= GENERIC_STM32_F072XB
+
+ USE_FPU ?= no
+
+ # UF2 settings
+ UF2_FAMILY ?= STM32F0
+endif
+
+ifneq ($(findstring STM32F103, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m3
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32F1xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= STM32F103x8
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32f1xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= GENERIC_STM32_F103
+
+ USE_FPU ?= no
+
+ # UF2 settings
+ UF2_FAMILY ?= STM32F1
+endif
+
+ifneq ($(findstring STM32F303, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32F3xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= STM32F303xC
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32f3xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= GENERIC_STM32_F303XC
+
+ USE_FPU ?= yes
+
+ # UF2 settings
+ UF2_FAMILY ?= STM32F3
+endif
+
+ifneq ($(findstring STM32F401, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32F4xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ ifeq ($(strip $(BOOTLOADER)), tinyuf2)
+ MCU_LDSCRIPT ?= STM32F401xC_tinyuf2
+ FIRMWARE_FORMAT ?= uf2
+ else
+ MCU_LDSCRIPT ?= STM32F401xC
+ endif
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32f4xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= BLACKPILL_STM32_F401
+
+ USE_FPU ?= yes
+
+ # UF2 settings
+ UF2_FAMILY ?= STM32F4
+endif
+
+ifneq ($(findstring STM32F405, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32F4xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/ports/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= STM32F405xG
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32f4xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= GENERIC_STM32_F405XG
+
+ USE_FPU ?= yes
+
+ # UF2 settings
+ UF2_FAMILY ?= STM32F4
+endif
+
+ifneq ($(findstring STM32F407, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32F4xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= STM32F407xE
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32f4xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= GENERIC_STM32_F407XE
+
+ USE_FPU ?= yes
+
+ # UF2 settings
+ UF2_FAMILY ?= STM32F4
+endif
+
+ifneq ($(findstring STM32F411, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32F4xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ ifeq ($(strip $(BOOTLOADER)), tinyuf2)
+ MCU_LDSCRIPT ?= STM32F411xE_tinyuf2
+ FIRMWARE_FORMAT ?= uf2
+ else
+ MCU_LDSCRIPT ?= STM32F411xE
+ endif
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32f4xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= BLACKPILL_STM32_F411
+
+ USE_FPU ?= yes
+
+ # UF2 settings
+ UF2_FAMILY ?= STM32F4
+endif
+
+ifneq ($(findstring STM32F446, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32F4xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= STM32F446xE
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32f4xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= GENERIC_STM32_F446XE
+
+ USE_FPU ?= yes
+endif
+
+ifneq ($(findstring STM32G431, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32G4xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= STM32G431xB
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32g4xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= GENERIC_STM32_G431XB
+
+ USE_FPU ?= yes
+
+ # UF2 settings
+ UF2_FAMILY ?= STM32G4
+endif
+
+ifneq ($(findstring STM32G474, $(MCU)),)
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32G4xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= STM32G474xE
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32g4xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= GENERIC_STM32_G474XE
+
+ USE_FPU ?= yes
+
+ # UF2 settings
+ UF2_FAMILY ?= STM32G4
+endif
+
+ifneq (,$(filter $(MCU),STM32L433 STM32L443))
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32L4xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= STM32L432xC
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32l4xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= GENERIC_STM32_L433XC
+
+ PLATFORM_NAME ?= platform_l432
+
+ USE_FPU ?= yes
+
+ # UF2 settings
+ UF2_FAMILY ?= STM32L4
+endif
+
+ifneq (,$(filter $(MCU),STM32L412 STM32L422))
+ # Cortex version
+ MCU = cortex-m4
+
+ # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+ ARMV = 7
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = STM32
+ MCU_SERIES = STM32L4xx
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/ARMCMx/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= STM32L412xB
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+ MCU_STARTUP ?= stm32l4xx
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= GENERIC_STM32_L412XB
+
+ PLATFORM_NAME ?= platform_l432
+
+ USE_FPU ?= yes
+
+ # UF2 settings
+ UF2_FAMILY ?= STM32L4
+endif
+
+ifneq ($(findstring GD32VF103, $(MCU)),)
+ # RISC-V
+ MCU = risc-v
+
+ # RISC-V extensions and abi configuration
+ MCU_ARCH = rv32imac
+ MCU_ABI = ilp32
+ MCU_CMODEL = medlow
+
+ ## chip/board settings
+ # - the next two should match the directories in
+ # <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+ MCU_FAMILY = GD32V
+ MCU_SERIES = GD32VF103
+
+ # Linker script to use
+ # - it should exist either in <chibios>/os/common/startup/RISCV-ECLIC/compilers/GCC/ld/
+ # or <keyboard_dir>/ld/
+ MCU_LDSCRIPT ?= GD32VF103xB
+
+ # Startup code to use
+ # - it should exist in <chibios>/os/common/startup/RISCV-ECLIC/compilers/GCC/mk/
+ MCU_STARTUP ?= gd32vf103
+
+ # Board: it should exist either in <chibios>/os/hal/boards/,
+ # <keyboard_dir>/boards/, or drivers/boards/
+ BOARD ?= SIPEED_LONGAN_NANO
+
+ USE_FPU ?= no
+endif
+
+ifneq (,$(filter $(MCU),at90usb162 atmega16u2 atmega32u2 atmega16u4 atmega32u4 at90usb646 at90usb647 at90usb1286 at90usb1287))
+ PROTOCOL = LUFA
+
+ # Processor frequency.
+ # This will define a symbol, F_CPU, in all source code files equal to the
+ # processor frequency in Hz. You can then use this symbol in your source code to
+ # calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+ # automatically to create a 32-bit value in your source code.
+ #
+ # This will be an integer division of F_USB below, as it is sourced by
+ # F_USB after it has run through any CPU prescalers. Note that this value
+ # does not *change* the processor frequency - it should merely be updated to
+ # reflect the processor speed set externally so that the code can use accurate
+ # software delays.
+ F_CPU ?= 16000000
+
+ # LUFA specific
+ #
+ # Target architecture (see library "Board Types" documentation).
+ ARCH = AVR8
+
+ # Input clock frequency.
+ # This will define a symbol, F_USB, in all source code files equal to the
+ # input clock frequency (before any prescaling is performed) in Hz. This value may
+ # differ from F_CPU if prescaling is used on the latter, and is required as the
+ # raw input clock is fed directly to the PLL sections of the AVR for high speed
+ # clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+ # at the end, this will be done automatically to create a 32-bit value in your
+ # source code.
+ #
+ # If no clock division is performed on the input clock inside the AVR (via the
+ # CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+ F_USB ?= $(F_CPU)
+
+ # Interrupt driven control endpoint task
+ ifeq (,$(filter $(NO_INTERRUPT_CONTROL_ENDPOINT),yes))
+ OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+ endif
+ ifneq (,$(filter $(MCU),at90usb162 atmega16u2 atmega32u2))
+ NO_I2C = yes
+ endif
+endif
+
+ifneq (,$(filter $(MCU),atmega32a))
+ # MCU name for avrdude
+ AVRDUDE_MCU = m32
+
+ PROTOCOL = VUSB
+
+ # Processor frequency.
+ # This will define a symbol, F_CPU, in all source code files equal to the
+ # processor frequency in Hz. You can then use this symbol in your source code to
+ # calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+ # automatically to create a 32-bit value in your source code.
+ F_CPU ?= 12000000
+endif
+
+ifneq (,$(filter $(MCU),atmega328p))
+ # MCU name for avrdude
+ AVRDUDE_MCU = m328p
+
+ PROTOCOL = VUSB
+
+ # Processor frequency.
+ # This will define a symbol, F_CPU, in all source code files equal to the
+ # processor frequency in Hz. You can then use this symbol in your source code to
+ # calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+ # automatically to create a 32-bit value in your source code.
+ F_CPU ?= 16000000
+endif
+
+ifneq (,$(filter $(MCU),atmega328))
+ # MCU name for avrdude
+ AVRDUDE_MCU = m328
+
+ PROTOCOL = VUSB
+
+ # Processor frequency.
+ # This will define a symbol, F_CPU, in all source code files equal to the
+ # processor frequency in Hz. You can then use this symbol in your source code to
+ # calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+ # automatically to create a 32-bit value in your source code.
+ F_CPU ?= 16000000
+endif
+
+ifneq (,$(filter $(MCU),attiny85))
+ PROTOCOL = VUSB
+
+ # Processor frequency.
+ # This will define a symbol, F_CPU, in all source code files equal to the
+ # processor frequency in Hz. You can then use this symbol in your source code to
+ # calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+ # automatically to create a 32-bit value in your source code.
+ F_CPU ?= 16500000
+endif