Makefile

# -*- makefile -*-
#----------------------------------------------------------------------------
# WinAVR Makefile
#----------------------------------------------------------------------------
# On command line:
#
# make all = Make software.
#
# make clean = Clean out built project files.
#
# make coff = Convert ELF to AVR COFF.
#
# make extcoff = Convert ELF to AVR Extended COFF.
#
# make program = Download the hex file to the device, using avrdude.
#                Please customize the avrdude settings below first!
#
# make debug = Start either simulavr or avarice as specified for debugging,
#              with avr-gdb or avr-insight as the front end for debugging.
#
# make filename.s = Just compile filename.c into the assembler code only.
#
# make filename.i = Create a preprocessed source file for use in submitting
#                   bug reports to the GCC project.
#
# To rebuild project do "make clean" then "make all".
#----------------------------------------------------------------------------

ifeq ($(CFG),)
    $(info Configuration not specified - using Operation configuration)
    $(info )
    CFG = Operation
endif

AVR := C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin

# MCU name
MCU := atmega168
SPECS := "C:\Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.3.300\gcc\dev\$(MCU)"

# Processor frequency.
#     This will define a symbol, F_CPU, in all source code files equal to the
#     processor frequency. You can then use this symbol in your source code to
#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
#     automatically to create a 32-bit value in your source code.
#     Typical values are:
#         F_CPU =  1000000
#         F_CPU =  1843200
#         F_CPU =  2000000
#         F_CPU =  3686400
#         F_CPU =  4000000
#         F_CPU =  7372800
#         F_CPU =  8000000
#         F_CPU = 11059200
#         F_CPU = 14745600
#         F_CPU = 16000000
#         F_CPU = 18432000
#         F_CPU = 20000000
F_CPU := 8000000

# Output format. (can be srec, ihex, binary)
FORMAT := ihex

# Target file name (without extension).
MAIN := wavebubble
ifeq ($(CFG),Test)
    TARGET := $(MAIN)-test
endif
ifeq ($(CFG),Operation)
    TARGET := $(MAIN)-operation
endif


# Object files directory
#     To put object files in current directory, use a dot (.), do NOT make
#     this an empty or blank macro!
OBJDIR := $(CFG)

# List C source files here. (C dependencies are automatically generated.)
SRC := serial.c test.c pll.c tuner.c $(MAIN).c

# List C++ source files here. (C dependencies are automatically generated.)
CPPSRC :=

# List Assembler source files here.
#     Make them always end in a capital .S.  Files ending in a lowercase .s
#     will not be considered source files but generated files (assembler
#     output from the compiler), and will be deleted upon "make clean"!
#     Even though the DOS/Win* filesystem matches both .s and .S the same,
#     it will preserve the spelling of the filenames, and gcc itself does
#     care about how the name is spelled on its command-line.
ASRC :=

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

# Debugging format.
#     Native formats for AVR-GCC's -g are dwarf-2 [default] or stabs.
#     AVR Studio 4.10 requires dwarf-2.
#     AVR [Extended] COFF format requires stabs, plus an avr-objcopy run.
DEBUG := 2

# List any extra directories to look for include files here.
#     Each directory must be seperated by a space.
#     Use forward slashes for directory separators.
#     For a directory that has spaces, enclose it in quotes.
EXTRAINCDIRS := "C:\ProgramFiles(x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.3.300\include"

# Compiler flag to set the C Standard level.
#     c89   = "ANSI" C
#     gnu89 = c89 plus GCC extensions
#     c99   = ISO C99 standard (not yet fully implemented)
#     gnu99 = c99 plus GCC extensions
CSTANDARD := -std=gnu99

# Place -D or -U options here for C sources
CDEFS := -DF_CPU=$(F_CPU)UL

# Place -D or -U options here for ASM sources
ADEFS := -DF_CPU=$(F_CPU)

# Place -D or -U options here for C++ sources
CPPDEFS := -DF_CPU=$(F_CPU)UL
#CPPDEFS += -D__STDC_LIMIT_MACROS
#CPPDEFS += -D__STDC_CONSTANT_MACROS

ifeq ($(CFG),Test)
    CDEFS += -DTEST
    ADEFS += -DTEST
    CPPDEFS += -DTEST
endif
ifeq ($(CFG),Operation)
    CDEFS += -DOPERATION
    ADEFS += -DOPERATION
    CPPDEFS += -DOPERATION
endif

#---------------- Compiler Options C ----------------
#  -g*:          generate debugging information
#  -O*:          optimization level
#  -f...:        tuning, see GCC manual and avr-libc documentation
#  -Wall...:     warning level
#  -Wa,...:      tell GCC to pass this to the assembler.
#    -adhlns...: create assembler listing
CFLAGS = -x c
CFLAGS += -g$(DEBUG)
CFLAGS += $(CDEFS)
CFLAGS += -O$(OPT)
CFLAGS += -funsigned-char
CFLAGS += -funsigned-bitfields
CFLAGS += -ffunction-sections
CFLAGS += -fdata-sections
CFLAGS += -fpack-struct
CFLAGS += -fshort-enums
#CFLAGS += -fno-unit-at-a-time
#CFLAGS += -mshort-calls
CFLAGS += -Wall
CFLAGS += -Wundef
CFLAGS += -Wstrict-prototypes
#CFLAGS += -Wunreachable-code
#CFLAGS += -Wsign-compare
CFLAGS += -Wmultichar
CFLAGS += -Woverflow
CFLAGS += -Wa,-adhlns=$(<:%.c=$(OBJDIR)/%.lst)
CFLAGS += $(subst ProgramFiles(x86),Program Files (x86),$(patsubst %,-I%, $(EXTRAINCDIRS)))
CFLAGS += $(CSTANDARD)
CFLAGS += -B $(SPECS)

#---------------- Compiler Options C++ ----------------
#  -g*:          generate debugging information
#  -O*:          optimization level
#  -f...:        tuning, see GCC manual and avr-libc documentation
#  -Wall...:     warning level
#  -Wa,...:      tell GCC to pass this to the assembler.
#    -adhlns...: create assembler listing
CPPFLAGS = -g$(DEBUG)
CPPFLAGS += $(CPPDEFS)
CPPFLAGS += -O$(OPT)
CPPFLAGS += -funsigned-char
CPPFLAGS += -funsigned-bitfields
CPPFLAGS += -fpack-struct
CPPFLAGS += -fshort-enums
CPPFLAGS += -fno-exceptions
CPPFLAGS += -Wall
CFLAGS += -Wundef
#CPPFLAGS += -mshort-calls
#CPPFLAGS += -fno-unit-at-a-time
#CPPFLAGS += -Wstrict-prototypes
#CPPFLAGS += -Wunreachable-code
#CPPFLAGS += -Wsign-compare
CPPFLAGS += -Wa,-adhlns=$(<:%.cpp=$(OBJDIR)/%.lst)
CPPFLAGS += $(subst ProgramFiles(x86),Program Files (x86),$(patsubst %,-I%,$(EXTRAINCDIRS)))
#CPPFLAGS += $(CSTANDARD)

#---------------- Assembler Options ----------------
#  -Wa,...:   tell GCC to pass this to the assembler.
#  -adhlns:   create listing
#  -gstabs:   have the assembler create line number information; note that
#             for use in COFF files, additional information about filenames
#             and function names needs to be present in the assembler source
#             files -- see avr-libc docs [FIXME: not yet described there]
#  -listing-cont-lines: Sets the maximum number of continuation lines of hex
#       dump that will be displayed for a given single line of source input.
ASFLAGS = $(ADEFS) -Wa,-adhlns=$(<:%.S=$(OBJDIR)/%.lst),-gstabs,--listing-cont-lines=100

#---------------- Library Options ----------------
# Minimalistic printf version
PRINTF_LIB_MIN := -Wl,-u,vfprintf -lprintf_min

# Floating point printf version (requires MATH_LIB = -lm below)
PRINTF_LIB_FLOAT := -Wl,-u,vfprintf -lprintf_flt

# If this is left blank, then it will use the Standard printf version.
PRINTF_LIB :=
#PRINTF_LIB := $(PRINTF_LIB_MIN)
#PRINTF_LIB := $(PRINTF_LIB_FLOAT)

# Minimalistic scanf version
SCANF_LIB_MIN := -Wl,-u,vfscanf -lscanf_min

# Floating point + %[ scanf version (requires MATH_LIB = -lm below)
SCANF_LIB_FLOAT := -Wl,-u,vfscanf -lscanf_flt

# If this is left blank, then it will use the Standard scanf version.
SCANF_LIB :=
#SCANF_LIB := $(SCANF_LIB_MIN)
#SCANF_LIB := $(SCANF_LIB_FLOAT)

MATH_LIB := -Wl,-lm

# List any extra directories to look for libraries here.
#     Each directory must be seperated by a space.
#     Use forward slashes for directory separators.
#     For a directory that has spaces, enclose it in quotes.
EXTRALIBDIRS :=

#---------------- External Memory Options ----------------
# 64 KB of external RAM, starting after internal RAM (ATmega128!),
# used for variables (.data/.bss) and heap (malloc()).
#EXTMEMOPTS = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff

# 64 KB of external RAM, starting after internal RAM (ATmega128!),
# only used for heap (malloc()).
#EXTMEMOPTS = -Wl,--section-start,.data=0x801100,--defsym=__heap_end=0x80ffff

EXTMEMOPTS := -Wl,--start-group,--end-group,--gc-sections

#---------------- Linker Options ----------------
#  -Wl,...:     tell GCC to pass this to linker.
#    -Map:      create map file
#    --cref:    add cross reference to map file
LDFLAGS = -Wl,-Map=$(OBJDIR)/$(TARGET).map,--cref
LDFLAGS += $(EXTMEMOPTS)
LDFLAGS += $(PRINTF_LIB)
LDFLAGS += $(SCANF_LIB)
LDFLAGS += $(MATH_LIB)
#LDFLAGS += -T linker_script.x
LDFLAGS += -mmcu=$(MCU)
LDFLAGS += -B $(SPECS)

#---------------- Programming Options (avrdude) ----------------
# Programming hardware
# Type: avrdude -c ?
# to get a full listing.
#
AVRDUDE_PROGRAMMER = avrispmkII

# com1 = serial port. Use lpt1 to connect to parallel port.
AVRDUDE_PORT = COM3 # programmer connected to serial device

#AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
AVRDUDE_WRITE_FLASH = -pf -if$(OBJDIR)/$(TARGET).hex
AVRDUDE_WRITE_EEPROM = -pe -ve -ie$(OBJDIR)/$(TARGET).eep

# SPI clock frequency in KHz = 1000 / (1.5 + B) where B is the bitclock
# Set ISP frequency to 125kHz
AVRDUDE_ISP_FREQ =
ifeq ($(CFG),Operation)
	#AVRDUDE_ISP_FREQ += -B 6.5
	AVRDUDE_ISP_FREQ += -I125000
endif

# Uncomment the following if you want avrdude's erase cycle counter.
# Note that this counter needs to be initialized first using -Yn,
# see avrdude manual.
#AVRDUDE_ERASE_COUNTER := -y

# Uncomment the following if you do /not/ wish a verification to be
# performed after programming the device.
#AVRDUDE_NO_VERIFY += -V
AVRDUDE_NO_VERIFY := -vf

# Increase verbosity level.  Please use this when submitting bug
# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude>
# to submit bug reports.
#AVRDUDE_VERBOSE = -v -v

#AVRDUDE_FLAGS := -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
AVRDUDE_FLAGS := -d$(MCU) -c$(AVRDUDE_PORT)
AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY)
AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE)
AVRDUDE_FLAGS += $(AVRDUDE_ISP_FREQ)
#AVRDUDE_FLAGS += -U lfuse:w:0xe2:m -U hfuse:w:0xd5:m -U efuse:w:0xff:m 

#---------------- Debugging Options ----------------
# For simulavr only - target MCU frequency.
DEBUG_MFREQ := $(F_CPU)

# Set the DEBUG_UI to either gdb or insight.
#DEBUG_UI = gdb
DEBUG_UI := insight

# Set the debugging back-end to either avarice, simulavr.
DEBUG_BACKEND := avarice
#DEBUG_BACKEND := simulavr

# GDB Init Filename.
GDBINIT_FILE := __avr_gdbinit

# When using avarice settings for the JTAG
JTAG_DEV := /dev/com1

# Debugging port used to communicate between GDB / avarice / simulavr.
DEBUG_PORT := 4242

# Debugging host used to communicate between GDB / avarice / simulavr, normally
#     just set to localhost unless doing some sort of crazy debugging when
#     avarice is running on a different computer.
DEBUG_HOST := localhost

#============================================================================

# Define programs and commands.
SHELL := sh
CC := $(AVR)\avr-gcc.exe
OBJCOPY := $(AVR)\avr-objcopy.exe
OBJDUMP := $(AVR)\avr-objdump.exe
SIZE := $(AVR)\avr-size.exe
AR := $(AVR)\avr-ar.exe
NM := $(AVR)\avr-nm.exe
AVRDUDE := C:\Atmel\AVR Tools\STK500\stk500.exe
RM := rm -rf
COPY := cp
WINSHELL := cmd.exe

# Define Messages
MSG_ERRORS_NONE := Errors: none
MSG_BEGIN := -------- begin --------
MSG_END := --------  end  --------
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 C:
MSG_COMPILING_CPP := Compiling C++:
MSG_ASSEMBLING := Assembling:
MSG_CLEANING := Cleaning project:
MSG_CREATING_LIBRARY := Creating library:

# Define all object files.
OBJ := $(SRC:%.c=$(OBJDIR)/%.o) $(CPPSRC:%.cpp=$(OBJDIR)/%.o) $(ASRC:%.S=$(OBJDIR)/%.o)

# Define all listing files.
LST := $(SRC:%.c=$(OBJDIR)/%.lst) $(CPPSRC:%.cpp=$(OBJDIR)/%.lst) $(ASRC:%.S=$(OBJDIR)/%.lst)

# Compiler flags to generate dependency files.
GENDEPFLAGS = -MD -MP -MF "$(@:%.o=%.d)" -MT "$(@:%.o=%.d)" -MT "$(@:%.o=%.o)"

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

# Default target.
all: begin gccversion sizebefore build sizeafter end

# Change the build target to build a HEX file or a library.
build: elf hex eep lss sym srec
#build: lib

elf: $(OBJDIR)/$(TARGET).elf
hex: $(OBJDIR)/$(TARGET).hex
eep: $(OBJDIR)/$(TARGET).eep
lss: $(OBJDIR)/$(TARGET).lss
sym: $(OBJDIR)/$(TARGET).sym
srec: $(OBJDIR)/$(TARGET).srec
LIBNAME := lib$(TARGET).a
lib: $(LIBNAME)

# 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)

end:
	@echo $(MSG_END)
	@echo

# Display size of file.
HEXSIZE = "$(SIZE)" --target=$(FORMAT) $(OBJDIR)/$(TARGET).hex
ELFSIZE = "$(SIZE)" --mcu=$(MCU) --format=avr $(OBJDIR)/$(TARGET).elf

sizebefore:
#	@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); \
	2>/dev/null; echo; fi

sizeafter:
#	@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); \
	2>/dev/null; echo; fi
	$(ELFSIZE)

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

# Program the device.
program: $(TARGET).hex $(OBJDIR)/$(TARGET).eep
	"$(AVRDUDE)" $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)

# Generate avr-gdb config/init file which does the following:
#     define the reset signal, load the target file, connect to target, and set
#     a breakpoint at main().
gdb-config:
	@$(RM) $(GDBINIT_FILE)
	@echo define reset >> $(GDBINIT_FILE)
	@echo SIGNAL SIGHUP >> $(GDBINIT_FILE)
	@echo end >> $(GDBINIT_FILE)
	@echo file $(TARGET).elf >> $(GDBINIT_FILE)
	@echo target remote $(DEBUG_HOST):$(DEBUG_PORT) >> $(GDBINIT_FILE)
ifeq ($(DEBUG_BACKEND),simulavr)
	@echo load  >> $(GDBINIT_FILE)
endif
	@echo break main >> $(GDBINIT_FILE)

debug: gdb-config $(TARGET).elf
ifeq ($(DEBUG_BACKEND), avarice)
	@echo Starting AVaRICE - Press enter when "waiting to connect" message displays.
	@$(WINSHELL) /c start avarice --jtag $(JTAG_DEV) --erase --program --file \
	$(TARGET).elf $(DEBUG_HOST):$(DEBUG_PORT)
	@$(WINSHELL) /c pause

else
	@$(WINSHELL) /c start simulavr --gdbserver --device $(MCU) --clock-freq \
	$(DEBUG_MFREQ) --port $(DEBUG_PORT)
endif
	@$(WINSHELL) /c start avr-$(DEBUG_UI) --command=$(GDBINIT_FILE)

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

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

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

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

$(OBJDIR)/%.srec: $(OBJDIR)/%.elf
	@echo
	@echo $(MSG_FLASH) $@
	"$(OBJCOPY)" -O srec -R .eeprom -R .fuse -R .lock -R .signature $< $@

$(OBJDIR)/%.eep: $(OBJDIR)/%.elf
	@echo
	@echo $(MSG_EEPROM) $@
	-"$(OBJCOPY)" -j .eeprom --set-section-flags=.eeprom="alloc,load" \
	--change-section-lma .eeprom=0 --no-change-warnings -O $(FORMAT) $< $@ || exit 0

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

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

# Create library from object files.
.SECONDARY: $(TARGET).a
.PRECIOUS: $(OBJ)
%.a: $(OBJ)
	@echo
	@echo $(MSG_CREATING_LIBRARY) $@
	"$(AR)" rcs $@ $(OBJ)

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

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

# Compile: create object files from C++ source files.
$(OBJDIR)/%.o: %.cpp
	@echo
	@echo $(MSG_COMPILING_CPP) $<
	"$(CC)" -c $(ALL_CPPFLAGS) -o $@ $<

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

# Compile: create assembler files from C++ source files.
%.s: %.cpp
	"$(CC)" -S $(ALL_CPPFLAGS) -o $@ $<

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

# Create preprocessed source for use in sending a bug report.
%.i : %.c
	"$(CC)" -E -mmcu=$(MCU) -I. $(CFLAGS) -o $@ $<

# Target: clean project.
clean: begin clean_list end

clean_list :
	@echo
	@echo $(MSG_CLEANING)
	$(RM) $(OBJDIR)/$(TARGET).srec
	$(RM) $(OBJDIR)/$(TARGET).hex
	$(RM) $(OBJDIR)/$(TARGET).eep
	$(RM) $(OBJDIR)/$(TARGET).cof
	$(RM) $(OBJDIR)/$(TARGET).elf
	$(RM) $(OBJDIR)/$(TARGET).map
	$(RM) $(OBJDIR)/$(TARGET).sym
	$(RM) $(OBJDIR)/$(TARGET).lss
	$(RM) $(SRC:%.c=$(OBJDIR)/%.o)
	$(RM) $(SRC:%.c=$(OBJDIR)/%.lst)
	$(RM) $(SRC:.c=.s)
	$(RM) $(SRC:%.c=$(OBJDIR)/%.d)
	$(RM) $(SRC:.c=.i)
#	$(RM) .dep
	$(RM) $(OBJDIR)


# Create object files directory
$(shell mkdir $(OBJDIR))

# Include the dependency files.
#-include $(shell mkdir .dep ) $(wildcard .dep/*)

# Listing of phony targets.
.PHONY : all begin finish end sizebefore sizeafter gccversion \
build elf hex eep lss srec sym coff extcoff \
clean clean_list program debug gdb-config