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# ---------------------------------------
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# Common make definition for all examples
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# ---------------------------------------
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# upper helper function
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to_upper = $(subst a,A,$(subst b,B,$(subst c,C,$(subst d,D,$(subst e,E,$(subst f,F,$(subst g,G,$(subst h,H,$(subst i,I,$(subst j,J,$(subst k,K,$(subst l,L,$(subst m,M,$(subst n,N,$(subst o,O,$(subst p,P,$(subst q,Q,$(subst r,R,$(subst s,S,$(subst t,T,$(subst u,U,$(subst v,V,$(subst w,W,$(subst x,X,$(subst y,Y,$(subst z,Z,$(subst -,_,$(1))))))))))))))))))))))))))))
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#-------------------------------------------------------------
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# Toolchain
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# Can be changed via TOOLCHAIN=gcc|clang or CC=arm-none-eabi-gcc|clang
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#-------------------------------------------------------------
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ifneq (,$(findstring clang,$(CC)))
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TOOLCHAIN = clang
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else ifneq (,$(findstring gcc,$(CC)))
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TOOLCHAIN = gcc
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endif
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# Default to GCC
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ifndef TOOLCHAIN
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TOOLCHAIN = gcc
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endif
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#-------------- TOP and EXAMPLE_PATH ------------
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# Set TOP to be the path to get from the current directory (where make was invoked) to the top of the tree.
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# $(lastword $(MAKEFILE_LIST)) returns the name of this makefile relative to where make was invoked.
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THIS_MAKEFILE := $(lastword $(MAKEFILE_LIST))
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# Set TOP to an absolute path
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TOP = $(abspath $(subst family_support.mk,../..,$(THIS_MAKEFILE)))
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# Set EXAMPLE_PATH to the relative path from TOP to the current directory, ie examples/device/cdc_msc
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EXAMPLE_PATH = $(subst $(TOP)/,,$(abspath .))
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#-------------- Linux/Windows ------------
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# Detect whether shell style is windows or not
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# https://stackoverflow.com/questions/714100/os-detecting-makefile/52062069#52062069
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ifeq '$(findstring ;,$(PATH))' ';'
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# PATH contains semicolon - so we're definitely on Windows.
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CMDEXE := 1
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# makefile shell commands should use syntax for DOS CMD, not unix sh
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# Force DOS command shell on Windows.
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SHELL := cmd.exe
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endif
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ifeq ($(CMDEXE),1)
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CP = copy
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RM = del
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MKDIR = mkdir
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PYTHON = python
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else
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CP = cp
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RM = rm
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MKDIR = mkdir
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PYTHON = python3
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endif
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# Build directory
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BUILD := _build/$(BOARD)
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PROJECT := $(notdir $(CURDIR))
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#-------------------------------------------------------------
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# Family and Board
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#-------------------------------------------------------------
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BOARD_PATH := $(subst $(TOP)/,,$(wildcard $(TOP)/hw/bsp/*/boards/$(BOARD)))
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FAMILY := $(word 3, $(subst /, ,$(BOARD_PATH)))
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FAMILY_PATH = hw/bsp/$(FAMILY)
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ifeq ($(BOARD_PATH),)
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$(info You must provide a BOARD parameter with 'BOARD=')
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$(error Invalid BOARD specified)
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endif
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# Include Family and Board specific defs
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include $(TOP)/$(FAMILY_PATH)/family.mk
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SRC_C += $(subst $(TOP)/,,$(wildcard $(TOP)/$(FAMILY_PATH)/*.c))
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#-------------------------------------------------------------
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# Source files and compiler flags
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#-------------------------------------------------------------
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# tinyusb makefile
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include $(TOP)/src/tinyusb.mk
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SRC_C += $(TINYUSB_SRC_C)
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# Include all source C in family & board folder
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SRC_C += hw/bsp/board.c
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SRC_C += $(subst $(TOP)/,,$(wildcard $(TOP)/$(BOARD_PATH)/*.c))
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INC += \
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$(TOP)/$(FAMILY_PATH) \
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$(TOP)/src \
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$(TOP)/hw \
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BOARD_UPPER = $(call to_upper,$(BOARD))
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CFLAGS += -DBOARD_$(BOARD_UPPER)
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ifdef CFLAGS_CLI
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CFLAGS += $(CFLAGS_CLI)
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endif
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# use max3421 as host controller
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ifeq (${MAX3421_HOST},1)
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SRC_C += src/portable/analog/max3421/hcd_max3421.c
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CFLAGS += -DCFG_TUH_MAX3421=1
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endif
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# Log level is mapped to TUSB DEBUG option
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ifneq ($(LOG),)
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CFLAGS += -DCFG_TUSB_DEBUG=$(LOG)
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endif
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# Logger: default is uart, can be set to rtt or swo
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ifeq ($(LOGGER),rtt)
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CFLAGS += -DLOGGER_RTT
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#CFLAGS += -DSEGGER_RTT_MODE_DEFAULT=SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL
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INC += $(TOP)/lib/SEGGER_RTT/RTT
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SRC_C += lib/SEGGER_RTT/RTT/SEGGER_RTT.c
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endif
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ifeq ($(LOGGER),swo)
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CFLAGS += -DLOGGER_SWO
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else
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CFLAGS += -DLOGGER_UART
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endif
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# CPU specific flags
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ifdef CPU_CORE
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include ${TOP}/examples/build_system/make/cpu/$(CPU_CORE).mk
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endif
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# toolchain specific - select based on CPU architecture
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ifdef CPU_CORE
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ifneq (,$(filter cortex% arm%,$(CPU_CORE)))
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# ARM/Cortex architecture
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include ${TOP}/examples/build_system/make/toolchain/arm_$(TOOLCHAIN).mk
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else ifneq (,$(filter rv%,$(CPU_CORE)))
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# RISC-V architecture
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include ${TOP}/examples/build_system/make/toolchain/riscv_$(TOOLCHAIN).mk
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else
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$(error Unsupported CPU_CORE architecture: $(CPU_CORE). Must start with cortex, arm, or rv)
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endif
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else
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# Default to ARM if CPU_CORE not specified
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include ${TOP}/examples/build_system/make/toolchain/arm_$(TOOLCHAIN).mk
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endif
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#---------------------- FreeRTOS -----------------------
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FREERTOS_SRC = lib/FreeRTOS-Kernel
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FREERTOS_PORTABLE_PATH = $(FREERTOS_SRC)/portable/GCC
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ifeq ($(RTOS),freertos)
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SRC_C += \
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$(FREERTOS_SRC)/list.c \
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$(FREERTOS_SRC)/queue.c \
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$(FREERTOS_SRC)/tasks.c \
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$(FREERTOS_SRC)/timers.c \
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$(subst $(TOP)/,,$(wildcard $(TOP)/$(FREERTOS_PORTABLE_SRC)/*.c))
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SRC_S += $(subst $(TOP)/,,$(wildcard $(TOP)/$(FREERTOS_PORTABLE_SRC)/*.s))
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INC += \
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$(TOP)/hw/bsp/$(FAMILY)/FreeRTOSConfig \
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$(TOP)/$(FREERTOS_SRC)/include \
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$(TOP)/$(FREERTOS_PORTABLE_SRC)
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CFLAGS += -DCFG_TUSB_OS=OPT_OS_FREERTOS
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# Suppress FreeRTOSConfig.h warnings
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CFLAGS += -Wno-error=redundant-decls
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# Suppress FreeRTOS source warnings
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CFLAGS += -Wno-error=cast-qual
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CFLAGS += -Wno-error=null-dereference
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# FreeRTOS (lto + Os) linker issue
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LDFLAGS += -Wl,--undefined=vTaskSwitchContext
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endif
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#---------------- Helper ----------------
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check_defined = \
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$(strip $(foreach 1,$1, \
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$(call __check_defined,$1,$(strip $(value 2)))))
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__check_defined = \
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$(if $(value $1),, \
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$(error Undefined make flag: $1$(if $2, ($2))))
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