Makefile

GIT_SHA   = $(shell git rev-parse --short HEAD)
BUILD_TS  = $(shell date +%Y-%m-%dT%H:%M:%S)
BINARY    = els

################################################################################
# TFT
# ------------------------------------------------------------------------------
#
# Set the TFT to the display used. Some ILITEK ICs use a non-standard 556 16-bit
# colorspace.
#
# You can define the TFT and COLORS in Makefile.tft if needed.
#
################################################################################
-include Makefile.tft
TFT      ?= ILI9481 # supported values ILI9481, ILI9486, ILI9488
COLORS   ?= TFT_RGB_565

SRCS      = $(wildcard src/*.c) $(wildcard src/tft/*.c) $(wildcard src/tft/fonts/*.c)
SRCS     += $(wildcard src/bitmaps/*.c)

ifneq (, $(findstring ILI9481, $(TFT)))
  SRCS   += $(wildcard src/tft/drivers/ili948x.c)
  CFLAGS += -DTFT_ILI9481 -D$(COLORS)
endif

ifneq (, $(findstring ILI9486, $(TFT)))
  SRCS   += $(wildcard src/tft/drivers/ili948x.c)
  CFLAGS += -DTFT_ILI9486 -D$(COLORS)
endif

ifneq (, $(findstring ILI9488, $(TFT)))
  SRCS   += $(wildcard src/tft/drivers/ili948x.c)
  CFLAGS += -DTFT_ILI9488 -D$(COLORS)
endif

-include Makefile.defines

OBJS      = $(addprefix obj/, $(SRCS:.c=.o))
VERBOSE  ?= 0

STLINK   ?= 0
STM32F446 = 1

CFLAGS   += -DGIT_SHA=\"$(GIT_SHA)\" -DBUILD_TS=\"$(BUILD_TS)\"
CFLAGS   += -Isrc -DVERBOSE=$(VERBOSE)
CFLAGS   += -std=gnu99 -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
CFLAGS   += -Wno-unused-parameter -Wno-unused-variable -Wno-unused-function -Os

#CFLAGS   += -DELS_DEBUG=1
#CFLAGS   += -ffast-math
#CFLAGS   += -frounding-math -fsignaling-nans -ffloat-store -ffp-contract=off

LDFLAGS  += -u _printf_float -lnosys --specs=nano.specs
LDFLAGS  += -Wl,--gc-sections,--sort-section=alignment
LDLIBS   += -lm
V       ?= 1

STM32F4xx  = 1
CFLAGS    += -DSTM32F446 -DSTM32F4xx
LDSCRIPT   = linker/stm32f446re.ld

include Makefile.include

.DEFAULT_GOAL := default

default: $(BINARY).hex size

ifeq ($(STLINK), 1)
flash: $(BINARY).hex
	st-flash --freq=4m --format=ihex write $(BINARY).hex
else
flash: $(BINARY).hex
	JLinkExe -if swd -device stm32f446re -speed 4000 jlink/flash.cmd
endif

ifneq ($(STLINK), 1)
reset:
	JLinkExe -if swd -device stm32f446re -speed 4000 jlink/reset.cmd
endif

size: $(BINARY).elf
	$(SIZE) $<

.PHONY: flash size default