339 lines
9.9 KiB
Text
339 lines
9.9 KiB
Text
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# ----------------------------------------------------------------------------
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# Makefile to compile and link the UART library and test program
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# Author: Peter Fleury
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# File: $Id: Makefile.uart,v 1.7 2015/09/05 19:04:44 peter Exp $
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#
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# Adjust MCU and F_CPU below to your AVR target
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#
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# Adjust the size of the receive and transmit ringbuffer in bytes using the
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# defines -DUART_RX_BUFFER_SIZE=<size in bytes> and -DUART_TX_BUFFER_SIZE=<size in bytes>
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# in the CDEFS section below
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#----------------------------------------------------------------------------
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# usage:
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#
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# make = build software
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# make clean = Clean out built project files
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# make program = Download the hex file to the device, using avrdude.
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# Please customize the avrdude settings below first!
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#
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# make filename.s = Just compile filename.c into the assembler code only.
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# make filename.i = Create a preprocessed source file
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#
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# To rebuild project do "make clean" then "make"
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#----------------------------------------------------------------------------
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# MCU name
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MCU = atmega8
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# Processor frequency.
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# This will define a symbol, F_CPU, in all source code files equal to the
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# processor frequency. You can then use this symbol in your source code to
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# calculate timings. Do NOT tack on a 'UL' at the end, this will be done
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# automatically to create a 32-bit value in your source code.
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F_CPU = 7372800
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# Target file name (without extension).
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TARGET = test_uart
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# List C source files here. (C dependencies are automatically generated.)
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SRC = $(TARGET).c uart.c
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# List Assembler source files here.
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# Make them always end in a capital .S. Files ending in a lowercase .s
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# will not be considered source files but generated files (assembler
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# output from the compiler), and will be deleted upon "make clean"!
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# Even though the DOS/Win* filesystem matches both .s and .S the same,
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# it will preserve the spelling of the filenames, and gcc itself does
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# care about how the name is spelled on its command-line.
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#ASRC =
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# List any extra directories to look for include files here.
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# Each directory must be seperated by a space.
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# Use forward slashes for directory separators.
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# For a directory that has spaces, enclose it in quotes.
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EXTRAINCDIRS =
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#specify alternate location of sources files
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# (unlike VPATH= which is a search path for all prerequisites, not just source files)
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#vpath %.c /<directory>/
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#vpath %.S /<directory>/
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# Optimization level, can be [0, 1, 2, 3, s].
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# 0 = turn off optimization. s = optimize for size.
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# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
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OPT = s
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# Place -D or -U options here
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# uncomment and adapt these line if you want different UART library buffer size
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#CDEFS += -DUART_RX_BUFFER_SIZE=128
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#CDEFS += -DUART_TX_BUFFER_SIZE=128
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# Place -I options here
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CINCS =
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#---------------- Compiler Options ----------------
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# -gdwarf-2: generate debugging information
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# -O*: optimization level
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# -f...: tuning, see GCC manual and avr-libc documentation
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# -Wall...: warning level
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# -Wa,...: tell GCC to pass this to the assembler.
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# -adhlns...: create assembler listing
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CFLAGS = -DF_CPU=$(F_CPU)UL
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CFLAGS += $(CDEFS) $(CINCS)
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CFLAGS += -I. $(patsubst %,-I%,$(EXTRAINCDIRS))
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CFLAGS += -std=gnu99
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CFLAGS += -gdwarf-2
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CFLAGS += -O$(OPT)
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CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
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CFLAGS += -Wall -Wstrict-prototypes
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CFLAGS += -Wa,-adhlns=$(<:.c=.lst)
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CFLAGS += -save-temps
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#---------------- Assembler Options ----------------
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# -Wa,...: tell GCC to pass this to the assembler.
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# -adhlns=$(<:.S=.lst) create listing
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# -gdwarf-2: generate debugging information
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ASFLAGS = -DF_CPU=$(F_CPU)UL -x assembler-with-cpp -Wa,-gdwarf2
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#---------------- Library Options ----------------
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# Minimalistic printf version
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PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
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# Floating point printf version (requires MATH_LIB = -lm below)
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PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt
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# If this is left blank, then it will use the Standard printf version.
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PRINTF_LIB =
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#PRINTF_LIB = $(PRINTF_LIB_MIN)
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#PRINTF_LIB = $(PRINTF_LIB_FLOAT)
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# Minimalistic scanf version
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SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
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# Floating point + %[ scanf version (requires MATH_LIB = -lm below)
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SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt
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# If this is left blank, then it will use the Standard scanf version.
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SCANF_LIB =
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#SCANF_LIB = $(SCANF_LIB_MIN)
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#SCANF_LIB = $(SCANF_LIB_FLOAT)
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MATH_LIB = -lm
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#---------------- External Memory Options ----------------
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# 64 KB of external RAM, starting after internal RAM (ATmega128!),
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# used for variables (.data/.bss) and heap (malloc()).
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#EXTMEMOPTS = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff
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# 64 KB of external RAM, starting after internal RAM (ATmega128!),
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# only used for heap (malloc()).
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#EXTMEMOPTS = -Wl,--defsym=__heap_start=0x801100,--defsym=__heap_end=0x80ffff
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EXTMEMOPTS =
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#---------------- Linker Options ----------------
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# -Wl,...: tell GCC to pass this to linker.
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# -Map: create map file
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# --cref: add cross reference to map file
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LDFLAGS = -Wl,-Map=$(TARGET).map,--cref
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LDFLAGS += $(EXTMEMOPTS)
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LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
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#---------------- Programming Options (avrdude) ----------------
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# Programming hardware: Type: avrdude -c ? to get a full listing.
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AVRDUDE_PROGRAMMER = usbasp
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# usb, com1 = serial port, lpt1 = parallel port
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AVRDUDE_PORT = USB
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AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
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#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
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# Uncomment the following if you do /not/ wish a verification to be performed after programming the device.
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#AVRDUDE_NO_VERIFY = -V
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# Disable save mode for fuses
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AVRDUDE_NO_SAFEMODE = -u
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# Uncomment the following if you want avrdude's erase cycle counter.
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# Note that this counter needs to be initialized first using -Yn,
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#AVRDUDE_ERASE_COUNTER = -y
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# Increase verbosity level.
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#AVRDUDE_VERBOSE = -v -v
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# Adjust programming speed of USBasp
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# no -B switch 375khz (default)
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# -B 2000 500 hz
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# -B 1000 1khz
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# -B 500 2khz
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# -B 250 4khz
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# -B 125 8 khz
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# -B 62 16khz
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# -B 31 32khz * the cutoff for bit banged isp
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# -B 10 93.75 khz
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# -B 5 187.5 khz
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# -B 2 375 khz
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# -B 1 750 khz
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# -B .5 1.5mhz
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#AVRDUDE_SPEED = -B .5
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AVRDUDE_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
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AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY)
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AVRDUDE_FLAGS += $(AVRDUDE_NO_SAFEMODE)
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AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
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AVRDUDE_FLAGS += $(AVRDUDE_SPEED)
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AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE)
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#============================================================================
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# Output format. (can be srec, ihex, binary)
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FORMAT = ihex
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# Define programs and commands.
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#SHELL = win-bash
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CC = avr-gcc
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OBJCOPY = avr-objcopy
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OBJDUMP = avr-objdump
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SIZE = avr-size
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NM = avr-nm
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AVRDUDE = avrdude
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REMOVE = rm -rf
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COPY = cp
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WINSHELL = cmd
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# Define Messages
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MSG_FLASH = Creating load file for Flash:
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MSG_EEPROM = Creating load file for EEPROM:
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MSG_EXTENDED_LISTING = Creating Extended Listing:
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MSG_SYMBOL_TABLE = Creating Symbol Table:
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MSG_LINKING = Linking:
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MSG_COMPILING = Compiling:
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MSG_ASSEMBLING = Assembling:
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MSG_CLEANING = Cleaning project:
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# Define all object files.
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OBJ = $(SRC:.c=.o) $(ASRC:.S=.o)
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# Define all listing files.
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LST = $(SRC:.c=.lst) $(ASRC:.S=.lst)
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# Compiler flags to generate dependency files.
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GENDEPFLAGS = -MD -MP -MF .dep/$(@F).d
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# Combine all necessary flags and optional flags.
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# Add target processor to flags.
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ALL_CFLAGS = -mmcu=$(MCU) $(CFLAGS) $(GENDEPFLAGS)
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ALL_ASFLAGS = -mmcu=$(MCU) -I. $(ASFLAGS)
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# Default target.
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all: gccversion $(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).lss $(TARGET).sym size
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# Display compiler version information.
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gccversion :
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@echo $(OBJ1)
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@$(CC) --version
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# Create final output files (.hex, .eep) from ELF output file.
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%.hex: %.elf
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@echo $(MSG_FLASH) $@
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$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
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%.eep: %.elf
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@echo $(MSG_EEPROM) $@
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-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 -O $(FORMAT) $< $@
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# Create extended listing file from ELF output file.
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%.lss: %.elf
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@echo $(MSG_EXTENDED_LISTING) $@
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$(OBJDUMP) -h -S $< > $@
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# Create a symbol table from ELF output file.
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%.sym: %.elf
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@echo $(MSG_SYMBOL_TABLE) $@
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$(NM) -n $< > $@
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# Link: create ELF output file from object files.
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.SECONDARY : $(TARGET).elf
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.PRECIOUS : $(OBJ)
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%.elf: $(OBJ)
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@echo $(MSG_LINKING) $@
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$(CC) -mmcu=$(MCU) $(LDFLAGS) $^ --output $(@F)
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# Compile: create object files from C source files.
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%.o : %.c
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@echo $(MSG_COMPILING) $<
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$(CC) -c $(ALL_CFLAGS) $< -o $(@F)
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# Compile: create assembler files from C source files.
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%.s : %.c
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$(CC) -S $(ALL_CFLAGS) $< -o $(@F)
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# Assemble: create object files from assembler source files.
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%.o : %.S
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@echo $(MSG_ASSEMBLING) $<
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$(CC) -c $(ALL_ASFLAGS) $< -o $(@F)
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# Create preprocessed source for use in sending a bug report.
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%.i : %.c
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$(CC) -E -mmcu=$(MCU) -I. $(CFLAGS) $< -o $(@F)
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# Display size of file.
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size: ${TARGET}.elf
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@avr-size -C --mcu=${MCU} ${TARGET}.elf
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# Program the device.
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program: $(TARGET).hex $(TARGET).eep
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$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
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# Delete all generated files.
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clean:
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@echo $(MSG_CLEANING)
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$(REMOVE) $(TARGET).hex $(TARGET).eep $(TARGET).cof $(TARGET).elf $(TARGET).map $(TARGET).sym $(TARGET).lss $(OBJ) $(LST) $(SRC:.c=.s) $(SRC:.c=.d) $(SRC:.c=.i) .dep/
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# Include the dependency files.
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#-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
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-include $(shell mkdir .dep 2>NUL) $(wildcard .dep/*)
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# Listing of phony targets.
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.PHONY : all size gccversion clean program
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