# Default compile configurations

# FLASH_MODE=[ dout | dio | qout | qio ]
# use flash mode dout by default to keep GPIO9 and GPIO10 free for use
FLASH_MODE ?= dout

# ESP* pseudomodules

PSEUDOMODULES += esp_gdb
PSEUDOMODULES += esp_i2c_sw
PSEUDOMODULES += esp_log_colored
PSEUDOMODULES += esp_log_tagged
PSEUDOMODULES += esp_log_startup
PSEUDOMODULES += esp_qemu
PSEUDOMODULES += esp_spiffs
PSEUDOMODULES += esp_wifi_any
PSEUDOMODULES += esp_wifi_ap

# Common includes

INCLUDES += -I$(RIOTBOARD)/common/$(CPU)/include
INCLUDES += -I$(RIOTCPU)/esp_common
INCLUDES += -I$(RIOTCPU)/esp_common/include
INCLUDES += -I$(RIOTCPU)/esp_common/include/freertos
INCLUDES += -I$(RIOTCPU)/esp_common/vendor/
INCLUDES += -I$(RIOTCPU)/esp_common/vendor/esp

# Flags

CFLAGS += -Wno-unused-parameter
CFLAGS += -Wformat=0
CFLAGS += -fstrict-volatile-bitfields
CFLAGS += -fdata-sections
CFLAFS += -ffunction-sections
CFLAGS += -fzero-initialized-in-bss

ifeq (xtensa,$(CPU_ARCH))
  CFLAGS += -mlongcalls -mtext-section-literals
endif

OPTIONAL_CFLAGS_BLACKLIST += -Wformat-overflow
OPTIONAL_CFLAGS_BLACKLIST += -Wformat-truncation
OPTIONAL_CFLAGS_BLACKLIST += -gz

ASFLAGS += --longcalls --text-section-literals

CFLAGS_DBG ?= -ggdb -g3

# override default CFLAGS_OPT in case module esp_gdb is enabled
ifneq (,$(filter esp_gdb,$(USEMODULE)))
  CFLAGS_OPT ?= -Og
else
  CFLAGS_OPT ?= -Os
endif

CFLAGS += $(CFLAGS_OPT) $(CFLAGS_DBG)

# add -DQEMU for qemu
ifneq (,$(filter esp_qemu,$(USEMODULE)))
  CFLAGS += -DQEMU
endif

ifneq (,$(filter esp_freertos_common,$(USEMODULE)))
  # thread_t.name required by FreeRTOS adaptation layer and esp_gdbstub
  CFLAGS += -DCONFIG_THREAD_NAMES
  # thread_t.stack_start required by FreeRTOS adaptation layer
  CFLAGS += -DSCHED_TEST_STACK
endif

# use 32 priority levels if any WiFi interface or the ETH interface is used
ifneq (,$(filter esp_wifi_any esp_eth,$(USEMODULE)))
  CFLAGS += -DSCHED_PRIO_LEVELS=32
endif

# The threads for handling the ESP hardware have the priorities from 2 to 4.
# The priority of lwIP TCPIP thread should be lower than these priorities.
ifneq (,$(filter lwip,$(USEMODULE)))
  CFLAGS += -DTCPIP_THREAD_PRIO=5
endif

# extend CFLAGS by the corresponding CONFIG_FLASHMODE_* defines
ifeq (dout,$(FLASH_MODE))
  CFLAGS += -DCONFIG_FLASHMODE_DOUT
  CFLAGS += -DCONFIG_ESPTOOLPY_FLASHMODE_DOUT
else ifeq (dio,$(FLASH_MODE))
  CFLAGS += -DCONFIG_FLASHMODE_DIO
  CFLAGS += -DCONFIG_ESPTOOLPY_FLASHMODE_DIO
else ifeq (qout,$(FLASH_MODE))
  CFLAGS += -DCONFIG_FLASHMODE_QOUT
  CFLAGS += -DCONFIG_ESPTOOLPY_FLASHMODE_QUOT
else ifeq (qio,$(FLASH_MODE))
  CFLAGS += -DCONFIG_FLASHMODE_QIO
  CFLAGS += -DCONFIG_ESPTOOLPY_FLASHMODE_QIO
else
  $(error Undefined FLASH_MODE, possible values are: dout, dio, qout and qio)
endif

ARCHIVES += -lg -lc

LINKFLAGS += $(CFLAGS_OPT) $(CFLAGS_DBG)
LINKFLAGS += -nostdlib -Wl,-gc-sections -Wl,-static

# use the wrapper functions for calloc to add correct overflow detection missing
# in the newlib's version.
LINKFLAGS += -Wl,-wrap,_calloc_r

ifneq (,$(filter esp_idf_heap,$(USEMODULE)))
  LINKFLAGS += -Wl,-wrap,_malloc_r
  LINKFLAGS += -Wl,-wrap,_realloc_r
  LINKFLAGS += -Wl,-wrap,_free_r
endif

# LINKFLAGS += -Wl,--verbose
# LINKFLAGS += -Wl,--print-gc-sections

# increase the test timeout for file system tests that use the SPI flash drive
ifneq (,$(filter spiffs littlefs,$(USEMODULE)))
  RIOT_TEST_TIMEOUT = 20
  $(call target-export-variables,test,RIOT_TEST_TIMEOUT)
endif

# All ESP are flashed using esptool
PROGRAMMER ?= esptool

# Add esptool in the list supported programmers
PROGRAMMERS_SUPPORTED += esptool

# The ELFFILE is defined by default in $(RIOTBASE)/Makefile.include but only
# after this file is included, so we need ELFFILE defined earlier.
# This is used to create new make rules in this file (based on FLASHFILE)
# and can't be deferred.
ELFFILE ?= $(BINDIR)/$(APPLICATION).elf
FLASHFILE ?= $(ELFFILE).bin

ESPTOOL ?= $(RIOTTOOLS)/esptools/esptool.py

# This is the binary that ends up programmed in the flash.
$(ELFFILE).bin: $(ELFFILE)
	$(Q)$(ESPTOOL) --chip $(FLASH_CHIP) elf2image --flash_mode $(FLASH_MODE) \
		--flash_size $(FLASH_SIZE)MB --flash_freq $(FLASH_FREQ) $(FLASH_OPTS) \
		-o $@ $<

# Convert .elf and .csv to .bin files at build time, but make them available for
# tests at flash time. These can't be added to FLASHDEPS because they depend on
# on ELFFILE and would trigger a rebuild with "flash-only".
BUILD_FILES += $(FLASHFILE) $(BINDIR)/partitions.bin $(BOOTLOADER_BIN)
TEST_EXTRA_FILES += $(FLASHFILE) $(BINDIR)/partitions.bin $(BOOTLOADER_BIN)

# Default partition table with no OTA. Can be replaced with a custom partition
# table setting PARTITION_TABLE_CSV.
PARTITION_TABLE_CSV ?= $(BINDIR)/partitions.csv

ifneq (,$(filter periph_flashpage_in_address_space,$(USEMODULE)))
$(BINDIR)/partitions.csv: $(FLASHFILE)
	$(Q)printf "\n" > $(BINDIR)/partitions.csv
	$(Q)printf "nvs, data, nvs, 0x9000, 0x6000\n" >> $@
	$(Q)printf "phy_init, data, phy, 0xf000, 0x1000\n" >> $@
	$(Q)printf "flashpage, data, phy, $(FLASHPAGE_ADDR_START), $(FLASHPAGE_CAP)\n" >> $@
	$(Q)printf "factory, app, factory, $(FLASHFILE_POS), " >> $@
	$(Q)ls -l $< | awk '{ print $$5 }' >> $@
else
$(BINDIR)/partitions.csv: $(FLASHFILE)
	$(Q)printf "\n" > $(BINDIR)/partitions.csv
	$(Q)printf "nvs, data, nvs, 0x9000, 0x6000\n" >> $@
	$(Q)printf "phy_init, data, phy, 0xf000, 0x1000\n" >> $@
	$(Q)printf "factory, app, factory, $(FLASHFILE_POS), " >> $@
	$(Q)ls -l $< | awk '{ print $$5 }' >> $@
endif

$(BINDIR)/partitions.bin: $(PARTITION_TABLE_CSV)
	$(Q)python3 $(RIOTTOOLS)/esptools/gen_esp32part.py --verify $< $@