cmake_minimum_required(VERSION 3.13)
if (NOT TARGET _rp2040_family_inclusion_marker)
	add_library(_rp2040_family_inclusion_marker INTERFACE)

	if (NOT BOARD)
		message("BOARD not specified, defaulting to pico_sdk")
		set(BOARD pico_sdk)
	endif()

	# add the SDK in case we are standalone tinyusb example (noop if already present)
	include(${CMAKE_CURRENT_LIST_DIR}/pico_sdk_import.cmake)

	# include basic family CMake functionality
	set(FAMILY_MCUS RP2040)

	include(${CMAKE_CURRENT_LIST_DIR}/boards/${BOARD}/board.cmake)

	# TOP is absolute path to root directory of TinyUSB git repo
	set(TOP "${CMAKE_CURRENT_LIST_DIR}/../../..")
	get_filename_component(TOP "${TOP}" REALPATH)

	if (NOT PICO_TINYUSB_PATH)
		set(PICO_TINYUSB_PATH ${TOP})
	endif()

	#------------------------------------
	# Base config for both device and host; wrapped by SDK's tinyusb_common
	#------------------------------------
	add_library(tinyusb_common_base INTERFACE)

	target_sources(tinyusb_common_base INTERFACE
			${TOP}/src/tusb.c
			${TOP}/src/common/tusb_fifo.c
			)

	target_include_directories(tinyusb_common_base INTERFACE
			${TOP}/src
			${TOP}/src/common
			${TOP}/hw
			)

	target_link_libraries(tinyusb_common_base INTERFACE
			hardware_structs
			hardware_irq
			hardware_resets
			pico_sync
			)

	set(TINYUSB_DEBUG_LEVEL 0)
	if (CMAKE_BUILD_TYPE STREQUAL "Debug")
		message("Compiling TinyUSB with CFG_TUSB_DEBUG=1")
		set(TINYUSB_DEBUG_LEVEL 1)
	endif()
	
	target_compile_definitions(tinyusb_common_base INTERFACE
			CFG_TUSB_MCU=OPT_MCU_RP2040
			CFG_TUSB_OS=OPT_OS_PICO
			CFG_TUSB_DEBUG=${TINYUSB_DEBUG_LEVEL}
	)

	#------------------------------------
	# Base config for device mode; wrapped by SDK's tinyusb_device
	#------------------------------------
	add_library(tinyusb_device_base INTERFACE)
	target_sources(tinyusb_device_base INTERFACE
			${TOP}/src/portable/raspberrypi/rp2040/dcd_rp2040.c
			${TOP}/src/portable/raspberrypi/rp2040/rp2040_usb.c
			${TOP}/src/device/usbd.c
			${TOP}/src/device/usbd_control.c
			${TOP}/src/class/audio/audio_device.c
			${TOP}/src/class/cdc/cdc_device.c
			${TOP}/src/class/dfu/dfu_device.c
			${TOP}/src/class/dfu/dfu_rt_device.c
			${TOP}/src/class/hid/hid_device.c
			${TOP}/src/class/midi/midi_device.c
			${TOP}/src/class/msc/msc_device.c
			${TOP}/src/class/net/ecm_rndis_device.c
			${TOP}/src/class/net/ncm_device.c
			${TOP}/src/class/usbtmc/usbtmc_device.c
			${TOP}/src/class/vendor/vendor_device.c
			${TOP}/src/class/video/video_device.c
			)

	#------------------------------------
	# Base config for host mode; wrapped by SDK's tinyusb_host
	#------------------------------------
	add_library(tinyusb_host_base INTERFACE)
	target_sources(tinyusb_host_base INTERFACE
			${TOP}/src/portable/raspberrypi/rp2040/hcd_rp2040.c
			${TOP}/src/portable/raspberrypi/rp2040/rp2040_usb.c
			${TOP}/src/host/usbh.c
			${TOP}/src/host/hub.c
			${TOP}/src/class/cdc/cdc_host.c
			${TOP}/src/class/hid/hid_host.c
			${TOP}/src/class/msc/msc_host.c
			${TOP}/src/class/vendor/vendor_host.c
			)

	# Sometimes have to do host specific actions in mostly common functions
	target_compile_definitions(tinyusb_host_base INTERFACE
			RP2040_USB_HOST_MODE=1
	)

	#------------------------------------
	# BSP & Additions
	#------------------------------------
	add_library(tinyusb_bsp INTERFACE)
	target_sources(tinyusb_bsp INTERFACE
			${TOP}/hw/bsp/rp2040/family.c
			)
	#	target_include_directories(tinyusb_bsp INTERFACE
	#			${TOP}/hw/bsp/rp2040)

	# tinyusb_additions will hold our extra settings for examples
	add_library(tinyusb_additions INTERFACE)

	target_compile_definitions(tinyusb_additions INTERFACE
		PICO_RP2040_USB_DEVICE_ENUMERATION_FIX=1
	)

	if(DEFINED LOG)
		target_compile_definitions(tinyusb_additions INTERFACE CFG_TUSB_DEBUG=${LOG})
	endif()

	if(LOGGER STREQUAL "rtt")
		target_compile_definitions(tinyusb_additions INTERFACE
				LOGGER_RTT
				SEGGER_RTT_MODE_DEFAULT=SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL
		)

		target_sources(tinyusb_additions INTERFACE
				${TOP}/lib/SEGGER_RTT/RTT/SEGGER_RTT.c
		)

		target_include_directories(tinyusb_additions INTERFACE
				${TOP}/lib/SEGGER_RTT/RTT
		)
	endif()

	#------------------------------------
	# Functions
	#------------------------------------

	function(family_configure_target TARGET)
		pico_add_extra_outputs(${TARGET})
		pico_enable_stdio_uart(${TARGET} 1)
		target_link_libraries(${TARGET} PUBLIC pico_stdlib pico_bootsel_via_double_reset tinyusb_board tinyusb_additions)
	endfunction()

	function(family_configure_device_example TARGET)
		family_configure_target(${TARGET})
		target_link_libraries(${TARGET} PUBLIC pico_stdlib tinyusb_device)
		suppress_tinyusb_warnings()
	endfunction()

	function(family_configure_host_example TARGET)
		family_configure_target(${TARGET})
		target_link_libraries(${TARGET} PUBLIC pico_stdlib tinyusb_host)
		suppress_tinyusb_warnings()
	endfunction()

	function(family_add_pico_pio_usb TARGET)
		target_link_libraries(${TARGET} PUBLIC tinyusb_pico_pio_usb)
	endfunction()

	function(family_configure_dual_usb_example TARGET)
		family_configure_target(${TARGET})
		# require tinyusb_pico_pio_usb
		target_link_libraries(${TARGET} PUBLIC pico_stdlib tinyusb_device tinyusb_host tinyusb_pico_pio_usb )
		suppress_tinyusb_warnings()
	endfunction()

	function(check_and_add_pico_pio_usb_support)
		# check for pico_generate_pio_header (as depending on environment we may be called before SDK is
		# initialized in which case it isn't available yet), and only do the initialization once
		if (COMMAND pico_generate_pio_header AND NOT TARGET tinyusb_pico_pio_usb)
			#------------------------------------
			# PIO USB for both host and device
			#------------------------------------

			if (NOT DEFINED PICO_PIO_USB_PATH)
				set(PICO_PIO_USB_PATH "${TOP}/hw/mcu/raspberry_pi/Pico-PIO-USB")
			endif()

			if (EXISTS ${PICO_PIO_USB_PATH}/src/pio_usb.c)
				add_library(tinyusb_pico_pio_usb INTERFACE)
				target_sources(tinyusb_device_base INTERFACE
						${TOP}/src/portable/raspberrypi/pio_usb/dcd_pio_usb.c
						)
				target_sources(tinyusb_host_base INTERFACE
						${TOP}/src/portable/raspberrypi/pio_usb/hcd_pio_usb.c
						)

				target_sources(tinyusb_pico_pio_usb INTERFACE
						${PICO_PIO_USB_PATH}/src/pio_usb.c
						${PICO_PIO_USB_PATH}/src/pio_usb_host.c
						${PICO_PIO_USB_PATH}/src/pio_usb_device.c
						${PICO_PIO_USB_PATH}/src/usb_crc.c
						)

				target_include_directories(tinyusb_pico_pio_usb INTERFACE
						${PICO_PIO_USB_PATH}/src
						)

				target_link_libraries(tinyusb_pico_pio_usb INTERFACE
						hardware_dma
						hardware_pio
						pico_multicore
						)

				target_compile_definitions(tinyusb_pico_pio_usb INTERFACE
						PIO_USB_USE_TINYUSB
						)

				pico_generate_pio_header(tinyusb_pico_pio_usb ${PICO_PIO_USB_PATH}/src/usb_tx.pio)
				pico_generate_pio_header(tinyusb_pico_pio_usb ${PICO_PIO_USB_PATH}/src/usb_rx.pio)
			endif()
		endif()
	endfunction()

	# Try to add Pico-PIO_USB support now for the case where this file is included directly
	# after Pico SDK initialization, but without using the family_ functions (as is the case
	# when included by the SDK itself)
	check_and_add_pico_pio_usb_support()

	function(family_initialize_project PROJECT DIR)
		# call the original version of this function from family_common.cmake
		_family_initialize_project(${PROJECT} ${DIR})
		enable_language(C CXX ASM)
		pico_sdk_init()

		# now re-check for adding Pico-PIO_USB support now SDK is definitely available
		check_and_add_pico_pio_usb_support()
	endfunction()

	# This method must be called from the project scope to suppress known warnings in TinyUSB source files
	function(suppress_tinyusb_warnings)
		# some of these are pretty silly warnings only occurring in some older GCC versions 9 or prior
		if (CMAKE_C_COMPILER_VERSION VERSION_LESS 10.0)
  		set(CONVERSION_WARNING_FILES
  				${PICO_TINYUSB_PATH}/src/tusb.c
  				${PICO_TINYUSB_PATH}/src/common/tusb_fifo.c
  				${PICO_TINYUSB_PATH}/src/device/usbd.c
  				${PICO_TINYUSB_PATH}/src/device/usbd_control.c
  				${PICO_TINYUSB_PATH}/src/host/usbh.c
  				${PICO_TINYUSB_PATH}/src/class/cdc/cdc_device.c
  				${PICO_TINYUSB_PATH}/src/class/cdc/cdc_host.c
  				${PICO_TINYUSB_PATH}/src/class/hid/hid_device.c
  				${PICO_TINYUSB_PATH}/src/class/hid/hid_host.c
  				${PICO_TINYUSB_PATH}/src/class/audio/audio_device.c
  				${PICO_TINYUSB_PATH}/src/class/dfu/dfu_device.c
  				${PICO_TINYUSB_PATH}/src/class/dfu/dfu_rt_device.c
  				${PICO_TINYUSB_PATH}/src/class/midi/midi_device.c
  				${PICO_TINYUSB_PATH}/src/class/usbtmc/usbtmc_device.c
  				${PICO_TINYUSB_PATH}/src/portable/raspberrypi/rp2040/hcd_rp2040.c
  				)
  		foreach(SOURCE_FILE IN LISTS CONVERSION_WARNING_FILES)
  			set_source_files_properties(
  					${SOURCE_FILE}
  					PROPERTIES
  					COMPILE_FLAGS "-Wno-conversion")
  		endforeach()
  	endif()
	endfunction()
endif()