MCU = atmega1284p
TARGET = images/OpenModem

# Optimization level, can be [0, 1, 2, 3, s]. 0 turns off optimization.
# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
OPT = s
FORMAT = ihex

SRC = main.c util/Config.c hardware/Serial.c hardware/AFSK.c hardware/VREF.c hardware/LED.c hardware/UserIO.c hardware/SD.c hardware/sdcard/diskio.c hardware/sdcard/ff.c hardware/sdcard/ffsystem.c hardware/sdcard/ffunicode.c hardware/Bluetooth.c hardware/BME280.c hardware/GPS.c hardware/Crypto.c hardware/crypto/AES.c hardware/crypto/HMAC_MD5.c hardware/crypto/MD5.c hardware/crypto/MD5_sbox.c util/CRC-CCIT.c protocol/AX25.c protocol/KISS.c

# TODO: Try hardware/crypto/MD5_asm.S
# List Assembler source files here.
ASRC = 

# List any extra directories to look for include files here.
EXTRAINCDIRS = 

# Optional compiler flags.
#  -g:        generate debugging information (for GDB, or for COFF conversion)
#  -O*:       optimization level
#  -f...:     tuning, see gcc manual and avr-libc documentation
#  -Wall...:  warning level
#  -Wa,...:   tell GCC to pass this to the assembler.
#    -ahlms:  create assembler listing
CFLAGS = -O$(OPT) \
-funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums \
-Wall -Wstrict-prototypes -fno-strict-aliasing \
-Wa,-adhlns=$(<:.c=.lst) \
$(patsubst %,-I%,$(EXTRAINCDIRS))

CFLAGS += -std=gnu99

# Optional assembler flags.
ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs 

# Optional linker flags.
# Previous: LDFLAGS = -Wl,-Map=$(TARGET).map,--cref
#  -Wl,...:   tell GCC to pass this to linker.
#  -Map:      create map file
#  --cref:    add cross reference to  map file
LDFLAGS = -Wl,-u,vfprintf,-lprintf_flt,-Map=$(TARGET).map,--cref

# Additional libraries
LDFLAGS += -lm

# Define programs and commands.
SHELL = sh
CC = avr-gcc
OBJCOPY = avr-objcopy
OBJDUMP = avr-objdump
SIZE = avr-size
REMOVE = rm -f
COPY = cp

HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
ELFSIZE = $(SIZE) --mcu=$(MCU) -C $(TARGET).elf

# Define Messages
# English
MSG_ERRORS_NONE = Firmware compiled successfully!
MSG_BEGIN = Starting build...
MSG_END = --------  Done  --------
MSG_SIZE_BEFORE = Size before: 
MSG_SIZE_AFTER = Size after:
MSG_COFF = Converting to AVR COFF:
MSG_EXTENDED_COFF = Converting to AVR Extended COFF:
MSG_FLASH = Creating load file for Flash:
MSG_EEPROM = Creating load file for EEPROM:
MSG_EXTENDED_LISTING = Creating Extended Listing:
MSG_SYMBOL_TABLE = Creating Symbol Table:
MSG_LINKING = Linking:
MSG_COMPILING = Compiling:
MSG_ASSEMBLING = Assembling:
MSG_CLEANING = Cleaning project:

# Define all object files.
OBJ = $(SRC:.c=.o) $(ASRC:.S=.o) 

# Define all listing files.
LST = $(ASRC:.S=.lst) $(SRC:.c=.lst)

# Combine all necessary flags and optional flags.
# Add target processor to flags.
ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS)
ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)



# Default target: make program!
#all: begin gccversion sizebefore $(TARGET).elf $(TARGET).hex $(TARGET).eep \
#	$(TARGET).lss $(TARGET).sym sizeafter finished end

all: begin $(TARGET).elf $(TARGET).hex $(TARGET).eep \
	$(TARGET).lss $(TARGET).sym cleanup sizeafter finished
#	$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)

# Eye candy.
# AVR Studio 3.x does not check make's exit code but relies on
# the following magic strings to be generated by the compile job.
begin:
	@echo
	@echo $(MSG_BEGIN)

finished:
	@echo $(MSG_ERRORS_NONE)

end:
	@echo $(MSG_END)
	@echo


# Display size of file.
sizebefore:
	@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi

sizeafter:
	@if [ -f $(TARGET).elf ]; then echo; $(ELFSIZE); echo; fi



# Display compiler version information.
gccversion : 
	@$(CC) --version




# Convert ELF to COFF for use in debugging / simulating in
# AVR Studio or VMLAB.
COFFCONVERT=$(OBJCOPY) --debugging \
	--change-section-address .data-0x800000 \
	--change-section-address .bss-0x800000 \
	--change-section-address .noinit-0x800000 \
	--change-section-address .eeprom-0x810000 


coff: $(TARGET).elf
#	@echo
#	@echo $(MSG_COFF) $(TARGET).cof
	@$(COFFCONVERT) -O coff-avr $< $(TARGET).cof


extcoff: $(TARGET).elf
#	@echo
#	@echo $(MSG_EXTENDED_COFF) $(TARGET).cof
	@$(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof


# Create final output files (.hex, .eep) from ELF output file.
%.hex: %.elf
#	@echo
#	@echo $(MSG_FLASH) $@
	@$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@

%.eep: %.elf
	@echo
#	@echo $(MSG_EEPROM) $@
#	@echo Not generating any EEPROM images
#	@-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 -O $(FORMAT) $< $@

# Create extended listing file from ELF output file.
%.lss: %.elf
#	@echo
#	@echo $(MSG_EXTENDED_LISTING) $@
	@$(OBJDUMP) -h -S $< > $@

# Create a symbol table from ELF output file.
%.sym: %.elf
#	@echo
#	@echo $(MSG_SYMBOL_TABLE) $@
	@avr-nm -n $< > $@



# Link: create ELF output file from object files.
.SECONDARY : $(TARGET).elf
.PRECIOUS : $(OBJ)
%.elf: $(OBJ)
	@echo $(MSG_LINKING) $@
	@$(CC) $(ALL_CFLAGS) $(OBJ) --output $@ $(LDFLAGS)


# Compile: create object files from C source files.
%.o : %.c
	@echo $(MSG_COMPILING) $<
	@$(CC) -c $(ALL_CFLAGS) $< -o $@


# Compile: create assembler files from C source files.
%.s : %.c
	@$(CC) -S $(ALL_CFLAGS) $< -o $@


# Assemble: create object files from assembler source files.
%.o : %.S
	@echo
	@echo $(MSG_ASSEMBLING) $<
	@$(CC) -c $(ALL_ASFLAGS) $< -o $@


# Target: clean project.
clean: clean_list finished

clean_list :
	@echo
	@echo $(MSG_CLEANING)
	$(REMOVE) $(TARGET).hex
	$(REMOVE) $(TARGET).eep
	$(REMOVE) $(TARGET).obj
	$(REMOVE) $(TARGET).cof
	$(REMOVE) $(TARGET).elf
	$(REMOVE) $(TARGET).map
	$(REMOVE) $(TARGET).obj
	$(REMOVE) $(TARGET).a90
	$(REMOVE) $(TARGET).sym
	$(REMOVE) $(TARGET).lnk
	$(REMOVE) $(TARGET).lss
	$(REMOVE) $(OBJ)
	$(REMOVE) $(LST)
	$(REMOVE) $(SRC:.c=.s)
	$(REMOVE) $(SRC:.c=.d)
	$(REMOVE) *~

cleanup:
	@$(REMOVE) $(SRC:.c=.s)
	@$(REMOVE) $(SRC:.c=.d)
	@$(REMOVE) $(LST)

# Automatically generate C source code dependencies. 
# (Code originally taken from the GNU make user manual and modified 
# (See README.txt Credits).)
#
# Note that this will work with sh (bash) and sed that is shipped with WinAVR
# (see the SHELL variable defined above).
# This may not work with other shells or other seds.
#
%.d: %.c
	@set -e; $(CC) -MM $(ALL_CFLAGS) $< \
	| sed 's,\(.*\)\.o[ :]*,\1.o \1.d : ,g' > $@; \
	[ -s $@ ] || rm -f $@

# Remove the '-' if you want to see the dependency files generated.
-include $(SRC:.c=.d)

# Listing of phony targets.
.PHONY : all begin finish end sizebefore sizeafter gccversion coff extcoff \
	clean clean_list program