# 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

# 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 -Wformat=0
CFLAGS += -mlongcalls -mtext-section-literals -fstrict-volatile-bitfields
CFLAGS += -fdata-sections -ffunction-sections -fzero-initialized-in-bss

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

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

# thin archives trigger a reboot loop - see #12258, #12035, #12346
ARFLAGS = rcs

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

# 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

# if SPI RAM is enabled, the qout flash mode has to be used
_FLASH_MODE_PREV := $(FLASH_MODE)
ifneq (,$(filter esp_spi_ram,$(USEMODULE)))
  FLASH_MODE = qout
else
  FLASH_MODE = $(_FLASH_MODE_PREV)
endif

# set CFLAG for the correspondant FLASH_MODE
CFLAGS += $(if $(findstring qout,$(FLASH_MODE)),-DFLASH_MODE_QOUT=1)
CFLAGS += $(if $(findstring qio,$(FLASH_MODE)),-DFLASH_MODE_QIO=1)
CFLAGS += $(if $(findstring dio,$(FLASH_MODE)),-DFLASH_MODE_DIO=1)
CFLAGS += $(if $(findstring dout,$(FLASH_MODE)),-DFLASH_MODE_DOUT=1)

BASELIBS += -lhal -lg -lc

LINKFLAGS += $(CFLAGS_OPT) $(CFLAGS_DBG)
LINKFLAGS += -L$(ESP_SDK_DIR)/components/$(CPU)
LINKFLAGS += -L$(ESP_SDK_DIR)/components/$(CPU)/lib
LINKFLAGS += -nostdlib -Wl,-gc-sections -Wl,-static

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

ifneq (,$(filter esp_log_colored,$(USEMODULE)))
  BOOTLOADER_COLOR = _colors
endif
ifneq (,$(filter esp_log_startup,$(USEMODULE)))
  BOOTLOADER_INFO = _info
endif

BOOTLOADER_BIN = bootloader$(BOOTLOADER_COLOR)$(BOOTLOADER_INFO).bin

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

# The ELFFILE is the base one used for flashing
FLASHFILE ?= $(ELFFILE)

# configure preflasher to convert .elf to .bin before flashing
PREFLASHER = $(ESPTOOL)
PREFFLAGS  = --chip $(FLASH_CHIP) elf2image
PREFFLAGS += --flash_mode $(FLASH_MODE) --flash_size $(FLASH_SIZE)MB
PREFFLAGS += --flash_freq $(FLASH_FREQ) $(FLASH_OPTS)
PREFFLAGS += -o $(FLASHFILE).bin $(FLASHFILE);
PREFFLAGS += printf "\n" > $(BINDIR)/partitions.csv;
PREFFLAGS += printf "nvs, data, nvs, 0x9000, 0x6000\n" >> $(BINDIR)/partitions.csv;
PREFFLAGS += printf "phy_init, data, phy, 0xf000, 0x1000\n" >> $(BINDIR)/partitions.csv;
PREFFLAGS += printf "factory, app, factory, 0x10000, " >> $(BINDIR)/partitions.csv;
PREFFLAGS += ls -l $(FLASHFILE).bin | awk '{ print $$5 }' >> $(BINDIR)/partitions.csv;

PREFFLAGS += python3 $(RIOTTOOLS)/esptool/gen_esp32part.py
PREFFLAGS += --verify $(BINDIR)/partitions.csv $(BINDIR)/partitions.bin
FLASHDEPS += preflash

# flasher configuration
ifneq (,$(filter esp_qemu,$(USEMODULE)))
  FLASHER = dd
  FFLAGS += if=/dev/zero bs=1M count=$(FLASH_SIZE) |
  FFLAGS += tr "\\000" "\\377" > tmp.bin && cat tmp.bin |
  FFLAGS += head -c $$(($(BOOTLOADER_POS))) |
  FFLAGS += cat - $(RIOTCPU)/$(CPU)/bin/$(BOOTLOADER_BIN) tmp.bin |
  FFLAGS += head -c $$((0x8000)) |
  FFLAGS += cat - $(BINDIR)/partitions.bin tmp.bin |
  FFLAGS += head -c $$((0x10000)) |
  FFLAGS += cat - $(FLASHFILE).bin tmp.bin |
  FFLAGS += head -c $(FLASH_SIZE)MB > $(BINDIR)/$(CPU)flash.bin && rm tmp.bin;
else
  PROGRAMMER_SPEED ?= 460800
  FLASHER = $(ESPTOOL)
  FFLAGS += --chip $(FLASH_CHIP) --port $(PROG_DEV) --baud $(PROGRAMMER_SPEED)
  FFLAGS += --before default_reset write_flash -z
  FFLAGS += --flash_mode $(FLASH_MODE) --flash_freq $(FLASH_FREQ)
  FFLAGS += $(BOOTLOADER_POS) $(RIOTCPU)/$(CPU)/bin/$(BOOTLOADER_BIN)
  FFLAGS += 0x8000 $(BINDIR)/partitions.bin
  FFLAGS += 0x10000 $(FLASHFILE).bin
endif

# 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