BOOTLOADER_FIRMWARE_DIR := $(abspath $(COMPONENT_PATH))/firmware

#configurate downloading parameters
ESPTOOLPY_FLASHSIZE ?= $(CONFIG_ESPTOOLPY_FLASHSIZE)
ESPTOOLPY_FLASHMODE ?= $(CONFIG_ESPTOOLPY_FLASHMODE)
ESPTOOLPY_FLASHFREQ ?= $(CONFIG_ESPTOOLPY_FLASHFREQ)

ifeq ($(ESPTOOLPY_FLASHSIZE), "512KB")
BLANK_BIN_OFFSET1 := 0x7B000
BLANK_BIN_OFFSET2 := 0x7E000
ESP_INIT_DATA_DEFAULT_BIN_OFFSET := 0x7C000
ESP8266_SIZEMAP := 0
endif
ifeq ($(ESPTOOLPY_FLASHSIZE), "1MB")
BLANK_BIN_OFFSET1 := 0xFB000
BLANK_BIN_OFFSET2 := 0xFE000
ESP_INIT_DATA_DEFAULT_BIN_OFFSET := 0xFC000
ESP8266_SIZEMAP := 2
endif
ifeq ($(ESPTOOLPY_FLASHSIZE), "2MB")
BLANK_BIN_OFFSET1 := 0x1FB000
BLANK_BIN_OFFSET2 := 0x1FE000
ESP_INIT_DATA_DEFAULT_BIN_OFFSET := 0x1FC000
ESP8266_SIZEMAP := 3
endif
ifeq ($(ESPTOOLPY_FLASHSIZE), "2MB-c1")
BLANK_BIN_OFFSET1 := 0x1FB000
BLANK_BIN_OFFSET2 := 0x1FE000
ESP_INIT_DATA_DEFAULT_BIN_OFFSET := 0x1FC000
ESP8266_SIZEMAP := 5
endif
ifeq ($(ESPTOOLPY_FLASHSIZE), "4MB")
BLANK_BIN_OFFSET1 := 0x3FB000
BLANK_BIN_OFFSET2 := 0x3FE000
ESP_INIT_DATA_DEFAULT_BIN_OFFSET := 0x3FC000
ESP8266_SIZEMAP := 4
endif
ifeq ($(ESPTOOLPY_FLASHSIZE), "4MB-c1")
BLANK_BIN_OFFSET1 := 0x3FB000
BLANK_BIN_OFFSET2 := 0x3FE000
ESP_INIT_DATA_DEFAULT_BIN_OFFSET := 0x3FC000
ESP8266_SIZEMAP := 6
endif
ifeq ($(ESPTOOLPY_FLASHSIZE), "8MB")
BLANK_BIN_OFFSET1 := 0x7FB000
BLANK_BIN_OFFSET2 := 0x7FE000
ESP_INIT_DATA_DEFAULT_BIN_OFFSET := 0x7FC000
ESP8266_SIZEMAP := 8
endif
ifeq ($(ESPTOOLPY_FLASHSIZE), "16MB")
BLANK_BIN_OFFSET1 := 0xFFB000
BLANK_BIN_OFFSET2 := 0xFFE000
ESP_INIT_DATA_DEFAULT_BIN_OFFSET := 0xFFC000
ESP8266_SIZEMAP := 9
endif

BOOTLOADER_BIN_OFFSET := 0
APP_OFFSET := 0x1000

ESP8266_BOOTMODE ?= 2 # always be 2

ifeq ($(ESPTOOLPY_FLASHMODE),"qio")
ESP8266_FLASHMODE ?= 0
endif
ifeq ($(ESPTOOLPY_FLASHMODE),"qout")
ESP8266_FLASHMODE ?= 1
endif
ifeq ($(ESPTOOLPY_FLASHMODE),"dio")
ESP8266_FLASHMODE ?= 2
endif
ifeq ($(ESPTOOLPY_FLASHMODE),"dout")
ESP8266_FLASHMODE ?= 3
endif

ifeq ($(ESPTOOLPY_FLASHFREQ),"20m")
ESP8266_FREQDIV ?= 2
endif
ifeq ($(ESPTOOLPY_FLASHFREQ),"26m")
ESP8266_FREQDIV ?= 1
endif
ifeq ($(ESPTOOLPY_FLASHFREQ),"40m")
ESP8266_FREQDIV ?= 0
endif
ifeq ($(ESPTOOLPY_FLASHFREQ),"80m")
ESP8266_FREQDIV ?= 15
endif

ESP8266_BINSCRIPT ?= python $(IDF_PATH)/tools/gen_appbin.py

ifdef DEBUG_BIN_PARAM
$(info mode:$(ESP8266_BOOTMODE) flash:$(ESP8266_FLASHMODE) freqdiv:$(ESP8266_FREQDIV), size_map:$(ESP8266_SIZEMAP))
$(info BLANK:$(BLANK_BIN_OFFSET1)/$(BLANK_BIN_OFFSET2) data:$(ESP_INIT_DATA_DEFAULT_BIN_OFFSET) script:$(ESP8266_LINKER_SCRIPTS))
endif

$(APP_BIN): $(APP_ELF)
	@$(OBJCOPY) --only-section .text -O binary $< eagle.app.v6.text.bin
	@$(OBJCOPY) --only-section .data -O binary $< eagle.app.v6.data.bin
	@$(OBJCOPY) --only-section .rodata -O binary $< eagle.app.v6.rodata.bin
	@$(OBJCOPY) --only-section .irom0.text -O binary $< eagle.app.v6.irom0text.bin
	@$(ESP8266_BINSCRIPT) $< $(ESP8266_BOOTMODE) $(ESP8266_FLASHMODE) $(ESP8266_FREQDIV) $(ESP8266_SIZEMAP)
	@mv eagle.app.flash.bin $@
	@rm eagle.app.v6.*

BLANK_BIN := $(BOOTLOADER_FIRMWARE_DIR)/blank.bin
ESP_INIT_DATA_DEFAULT_BIN := $(BOOTLOADER_FIRMWARE_DIR)/esp_init_data_default.bin
BOOTLOADER_BIN := $(BOOTLOADER_FIRMWARE_DIR)/boot_v1.7.bin

CONFIG_ESPTOOLPY_COMPRESSED ?= y
CONFIG_ESPTOOLPY_BEFORE_RESET ?=y
CONFIG_ESPTOOLPY_AFTER_RESET ?=y

PYTHON ?= $(call dequote,$(CONFIG_PYTHON))
ESPTOOLPY_SRC := $(IDF_PATH)/components/esptool_py/esptool/esptool.py

CHIP ?= esp8266
ESPPORT ?= $(CONFIG_ESPTOOLPY_PORT)
ESPBAUD ?= $(CONFIG_ESPTOOLPY_BAUD)
ESPFLASHMODE ?= $(CONFIG_ESPTOOLPY_FLASHMODE)
ESPFLASHFREQ ?= $(CONFIG_ESPTOOLPY_FLASHFREQ)
ESPFLASHSIZE ?= $(CONFIG_ESPTOOLPY_FLASHSIZE)
ESPTOOLPY := $(PYTHON) $(ESPTOOLPY_SRC) --chip $(CHIP)

ESPTOOL_WRITE_FLASH_OPTIONS := --flash_mode $(ESPFLASHMODE) --flash_freq $(ESPFLASHFREQ) --flash_size $(ESPFLASHSIZE)

ESPTOOLPY_SERIAL := $(ESPTOOLPY) --port $(ESPPORT) --baud $(ESPBAUD) --before $(CONFIG_ESPTOOLPY_BEFORE) --after $(CONFIG_ESPTOOLPY_AFTER)

ESPTOOLPY_WRITE_FLASH=$(ESPTOOLPY_SERIAL) write_flash $(if $(CONFIG_ESPTOOLPY_COMPRESSED),-z,-u) $(ESPTOOL_WRITE_FLASH_OPTIONS)

ESPTOOL_ALL_FLASH_ARGS += $(BOOTLOADER_BIN_OFFSET) $(BOOTLOADER_BIN) \
                          $(APP_OFFSET) $(APP_BIN) \
                          $(ESP_INIT_DATA_DEFAULT_BIN_OFFSET) $(ESP_INIT_DATA_DEFAULT_BIN) \
                          $(BLANK_BIN_OFFSET1) $(BLANK_BIN) \
                          $(BLANK_BIN_OFFSET2) $(BLANK_BIN)

flash: all_binaries $(ESPTOOLPY_SRC) $(call prereq_if_explicit,erase_flash)
	@echo "Flashing binaries to serial port $(ESPPORT) (app at offset $(APP_OFFSET))..."
	$(ESPTOOLPY_WRITE_FLASH) $(ESPTOOL_ALL_FLASH_ARGS)

app-flash: $(APP_BIN) $(ESPTOOLPY_SRC) $(call prereq_if_explicit,erase_flash)
	@echo "Flashing app to serial port $(ESPPORT), offset $(APP_OFFSET)..."
	$(ESPTOOLPY_WRITE_FLASH) $(APP_OFFSET) $(APP_BIN)

erase_flash:
	@echo "Erasing entire flash..."
	$(ESPTOOLPY_SERIAL) erase_flash

MONITORBAUD ?= $(CONFIG_MONITOR_BAUD)

MONITOR_PYTHON := $(PYTHON)

ifeq ("$(OS)","Windows_NT")
# miniterm and idf_monitor both need a Windows Console PTY in order
# to correctly handle user input
MONITOR_PYTHON := winpty $(PYTHON)
endif

# note: if you want to run miniterm from command line, can simply run
# miniterm.py on the console. The '$(PYTHON) -m serial.tools.miniterm'
# is to allow for the $(PYTHON) variable overriding the python path.
simple_monitor: $(call prereq_if_explicit,%flash)
	$(MONITOR_PYTHON) -m serial.tools.miniterm --rts 0 --dtr 0 --raw $(ESPPORT) $(MONITORBAUD)

MONITOR_OPTS := --baud $(MONITORBAUD) --port $(ESPPORT) --toolchain-prefix $(CONFIG_TOOLPREFIX) --make "$(MAKE)"

monitor: $(call prereq_if_explicit,%flash)
	$(summary) MONITOR
	[ -f $(APP_ELF) ] || echo "*** 'make monitor' target requires an app to be compiled and flashed first."
	[ -f $(APP_ELF) ] || echo "*** Run 'make flash monitor' to build, flash and monitor"
	[ -f $(APP_ELF) ] || echo "*** Or alternatively 'make simple_monitor' to view the serial port as-is."
	[ -f $(APP_ELF) ] || exit 1
	$(MONITOR_PYTHON) $(IDF_PATH)/tools/idf_monitor.py $(MONITOR_OPTS) $(APP_ELF)

# global CFLAGS for ESP8266
CFLAGS += -DMEMLEAK_DEBUG -DICACHE_FLASH

# void compiler error, we should remove these later
CFLAGS += -Wno-error=char-subscripts -Wno-error=unknown-pragmas -Wno-error=implicit-function-declaration \
          -Wno-error=pointer-sign -Wno-error=switch -Wno-error=maybe-uninitialized -Wno-error=format= \
          -Wno-error=unused-value -Wno-error=address -Wno-error=return-type -Wno-error=format-extra-args \
          -Wno-error=format-zero-length -Wno-error=unused-label -Wno-error=sizeof-pointer-memaccess

.PHONY: erase_flash