Makefile

TARGET_OUT ?= image.elf

all : $(TARGET_OUT) burn

#SUBMODULE if we are including this in another project.
SUBMODULE?=NO

#Pick from *52, *80, *115, 160, *173, *189, 231, 320 or 346 or (for now)
#Peripheral clocks of >115 will NOT boot without a full power-down and up. (Don't know why).  * = peripheral clock at processor clock.
MAIN_MHZ?=80

ESPUTIL:=~/esp/esputil/esputil
GCC_FOLDER:=~/esp/xtensa-lx106-elf
PREFIX:=$(GCC_FOLDER)/bin/xtensa-lx106-elf-
SIZE:=$(PREFIX)size
GCC:=$(PREFIX)gcc

#-mno-serialize-volatile will prevent extra memw things from being generated.

ifneq (YES, $(SUBMODULE))
	SRCPREFIX:=
	CFLAGS:=$(CFLAGS) -flto
	SRCS:=$(SRCS) main.c
else
	SRCPREFIX?=nosdk8266/
endif


LDFLAGS:=-T $(SRCPREFIX)ld/linkerscript.ld -T $(SRCPREFIX)ld/addresses.ld
FOLDERPREFIX:=$(GCC_FOLDER)/bin
PORT:=/dev/ttyUSB0

#Adding the -g flag makes our assembly easier to read and does not increase size of final executable.
CFLAGS:=$(CFLAGS) -Ofast -I$(SRCPREFIX)include -DMAIN_MHZ=$(MAIN_MHZ) -mno-serialize-volatile -mlongcalls -g
SRCS:=$(SRCS) $(SRCPREFIX)src/delay.S $(SRCPREFIX)src/nosdk8266.c

$(TARGET_OUT) : $(SRCS) $(DEPS)
	$(GCC) $(CFLAGS) $(SRCS) $(LDFLAGS) -o $@
	nm -S -n $(TARGET_OUT) > image.map
	$(SIZE) $@
	$(PREFIX)objdump -S $@ > image.lst
	$(ESPUTIL) mkbinnoext $(TARGET_OUT) $(TARGET_OUT).bin
	$(BUILDCOUNTCMD)


flash : burn
burn : $(FW_FILE_1) $(FW_FILE_2) $(TARGET_OUT)
	$(ESPUTIL) -b 115200 -p $(PORT) flash 0 $(TARGET_OUT).bin

monitor :
	stty -F $(PORT) 115200 -echo raw
	cat $(PORT)

clean :
	rm -rf $(TARGET_OUT) image.map image.lst $(TARGET_OUT).bin

# Simulate in qemu-xtensa: git@github.com:gschorcht/qemu-xtensa.git
qemulate:
	qemu-system-xtensa -M esp8266 -nographic -serial stdio -monitor none -kernel $(TARGET_OUT).bin