esp-idf/components/esptool_py/Makefile.projbuild

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# Component support for esptool.py. Doesn't do much by itself,
# components have their own flash targets that can use these variables.
ESPPORT ?= $(CONFIG_ESPTOOLPY_PORT)
ESPBAUD ?= $(CONFIG_ESPTOOLPY_BAUD)
ESPFLASHMODE ?= $(CONFIG_ESPTOOLPY_FLASHMODE)
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ESPFLASHFREQ ?= $(CONFIG_ESPTOOLPY_FLASHFREQ)
ESPFLASHSIZE ?= $(CONFIG_ESPTOOLPY_FLASHSIZE)
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PYTHON ?= $(call dequote,$(CONFIG_PYTHON))
# two commands that can be used from other components
# to invoke esptool.py (with or without serial port args)
#
ESPTOOLPY_SRC := $(COMPONENT_PATH)/esptool/esptool.py
ESPTOOLPY := $(PYTHON) $(ESPTOOLPY_SRC) --chip esp32
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ESPTOOLPY_SERIAL := $(ESPTOOLPY) --port $(ESPPORT) --baud $(ESPBAUD)
# Supporting esptool command line tools
ESPEFUSEPY := $(PYTHON) $(COMPONENT_PATH)/esptool/espefuse.py
ESPSECUREPY := $(PYTHON) $(COMPONENT_PATH)/esptool/espsecure.py
export ESPSECUREPY # is used in bootloader_support component
ESPTOOL_FLASH_OPTIONS := --flash_mode $(ESPFLASHMODE) --flash_freq $(ESPFLASHFREQ) --flash_size $(ESPFLASHSIZE)
ESPTOOL_ELF2IMAGE_OPTIONS :=
ESPTOOLPY_WRITE_FLASH=$(ESPTOOLPY_SERIAL) write_flash $(if $(CONFIG_ESPTOOLPY_COMPRESSED),-z) $(ESPTOOL_FLASH_OPTIONS)
ESPTOOL_ALL_FLASH_ARGS += $(CONFIG_APP_OFFSET) $(APP_BIN)
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ifdef CONFIG_SECURE_BOOT_ENABLED
ifndef IS_BOOTLOADER_BUILD
# for secure boot, add a signing step to get from unsiged app to signed app
APP_BIN_UNSIGNED := $(APP_BIN:.bin=-unsigned.bin)
$(APP_BIN): $(APP_BIN_UNSIGNED) $(SECURE_BOOT_SIGNING_KEY)
$(ESPSECUREPY) sign_data --keyfile $(SECURE_BOOT_SIGNING_KEY) -o $@ $<
endif
endif
# non-secure boot (or bootloader), both these files are the same
APP_BIN_UNSIGNED ?= $(APP_BIN)
$(APP_BIN_UNSIGNED): $(APP_ELF) $(ESPTOOLPY_SRC)
$(ESPTOOLPY) elf2image $(ESPTOOL_FLASH_OPTIONS) $(ESPTOOL_ELF2IMAGE_OPTIONS) -o $@ $<
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flash: all_binaries $(ESPTOOLPY_SRC)
@echo "Flashing binaries to serial port $(ESPPORT) (app at offset $(CONFIG_APP_OFFSET))..."
ifdef CONFIG_SECURE_BOOT_ENABLED
@echo "(Secure boot enabled, so bootloader not flashed automatically. See 'make bootloader' output)"
endif
$(ESPTOOLPY_WRITE_FLASH) $(ESPTOOL_ALL_FLASH_ARGS)
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app-flash: $(APP_BIN) $(ESPTOOLPY_SRC)
@echo "Flashing app to serial port $(ESPPORT), offset $(CONFIG_APP_OFFSET)..."
$(ESPTOOLPY_WRITE_FLASH) $(CONFIG_APP_OFFSET) $(APP_BIN)
# Submodules normally added in component.mk, but can be added
# at the project level as long as qualified path
COMPONENT_SUBMODULES += $(COMPONENT_PATH)/esptool