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AVR-GCC funkcje obslugi wyswietlacza LCD - linkowanie

ailpein 07 Jan 2012 15:02 2760 5
  • #1
    Level 10  
    Mam pewien problem.
    Polaczylem wyswietlacz HD44780 z atmega32.
    Korzystam z gotowej biblioteki Radowslawa Kwiecienia.

    Gdy laduje kod w taki sposob ze linkuje biblioteki z kodem glowym programu nie widze nic na wyswietlaczu, gdy natomiast wkleje kod z bibliotek do kodu glownego to wszystko dziala jak nalezy. Jaki moze byc tego przyczyna? Zalaczam moj Makefile.


    # MCU name
    MCU = atmega32

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

    # Target file name (without extension).
    TARGET = main

    # List C source files here. (C dependencies are automatically generated.)
    SRC = $(TARGET).c HD44780.c

    # 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 = 0

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

    # List any extra directories to look for include files here.
    #     Each directory must be seperated by a space.

    # 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
    CDEFS =

    # Place -I options here
    CINCS =

    # Compiler flags.
    #  -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 = -g$(DEBUG)
    CFLAGS += -O$(OPT)
    CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
    CFLAGS += -Wall -Wstrict-prototypes
    CFLAGS += -Wa,-adhlns=$(<:.c=.lst)
    CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))

    # Assembler flags.
    #  -Wa,...:   tell GCC to pass this to the assembler.
    #  -ahlms:    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]
    ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs

    #Additional libraries.

    # 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


    # 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


    MATH_LIB = -lm

    # 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,--defsym=__heap_start=0x801100,--defsym=__heap_end=0x80ffff


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

    # Programming support using avrdude. Settings and variables.

    # Programming hardware: alf avr910 avrisp bascom bsd
    # dt006 pavr picoweb pony-stk200 sp12 stk200 stk500
    # Type: avrdude -c ?
    # to get a full listing.

    # com1 = serial port. Use lpt1 to connect to parallel port.
    AVRDUDE_PORT = /dev/ttyUSB0    # programmer connected to serial device

    AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
    #AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep

    # 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.

    # Uncomment the following if you do /not/ wish a verification to be
    # performed after programming the device.

    # 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


    # ---------------------------------------------------------------------------

    # Define directories, if needed.
    DIRAVR = c:/winavr
    DIRAVRUTILS = $(DIRAVR)/utils/bin
    DIRINC = .
    DIRLIB = $(DIRAVR)/avr/lib

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

    # Define Messages
    # English
    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:
    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)

    # Compiler flags to generate dependency files.
    GENDEPFLAGS = -Wp,-M,-MP,-MT,$(*F).o,-MF,.dep/$(@F).d

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

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

    build: elf hex eep lss sym

    elf: $(TARGET).elf
    hex: $(TARGET).hex
    eep: $(TARGET).eep
    lss: $(TARGET).lss
    sym: $(TARGET).sym

    # 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.
       @echo $(MSG_BEGIN)

       @echo $(MSG_ERRORS_NONE)

       @echo $(MSG_END)

    # Display size of file.
    HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
    ELFSIZE = $(SIZE) -A $(TARGET).elf
       @if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi

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

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

    # Program the device. 
    program: $(TARGET).hex $(TARGET).eep

    # 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 $(MSG_COFF) $(TARGET).cof
       $(COFFCONVERT) -O coff-avr $< $(TARGET).cof

    extcoff: $(TARGET).elf
       @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 $(MSG_FLASH) $@
       $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@

    %.eep: %.elf
       @echo $(MSG_EEPROM) $@
       -$(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 $(MSG_EXTENDED_LISTING) $@
       $(OBJDUMP) -h -S $< > $@

    # Create a symbol table from ELF output file.
    %.sym: %.elf
       @echo $(MSG_SYMBOL_TABLE) $@
       $(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 $(MSG_ASSEMBLING) $<
       $(CC) -c $(ALL_ASFLAGS) $< -o $@

    # Target: clean project.
    clean: begin clean_list finished end

    clean_list :
       @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) .dep/*

    # Include the dependency files.
    -include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)

    # Listing of phony targets.
    .PHONY : all begin finish end sizebefore sizeafter gccversion \
    build elf hex eep lss sym coff extcoff \
    clean clean_list program
  • #2
    Moderator of Microcontroller designs
    Problem w tym, że to nie jest biblioteka, tylko zwykły plik źródłowy, który trzeba dołączyć do swojego projektu. Widzę, że sam plik w c załączyłeś, kwestia odwołań, przy kompilacji nie masz żadnych ostrzeżeń? Założę się, że masz. Tam tkwi odpowiedź.
    A BTW, olej te gotowe makefile i stwórz po prostu projekt w AVR Studio.
  • #3
    Level 10  
    Mniejsza o terminologie. Gdy korzystam z funkcji z zewnetrznego pliku HD44780.c, ktory linkuje (chyba prawidlowo) wyswietlacz nie dziala, gdy wklejam zawartosc pliku HD44780.c do glownego pliku main.c to wszystko gra.

    Nie korzystam z AVR Studio, programuje pod linuxem.
    Bledow tez nie widze, oto output po make:
    (akurat biblioteka w innej wersji, pliki lcd.c oraz lcd.h, ale efekt ten sam)


    $ make

    -------- begin --------
    avr-gcc (GCC) 4.3.5
    Copyright (C) 2008 Free Software Foundation, Inc.
    This is free software; see the source for copying conditions.  There is NO

    Compiling: main.c
    avr-gcc -c -mmcu=atmega8 -I. -gdwarf-2   -O0 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-adhlns=main.lst  -std=gnu99 -Wp,-M,-MP,-MT,main.o,-MF,.dep/main.o.d main.c -o main.o

    Compiling: lcd.c
    avr-gcc -c -mmcu=atmega8 -I. -gdwarf-2   -O0 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-adhlns=lcd.lst  -std=gnu99 -Wp,-M,-MP,-MT,lcd.o,-MF,.dep/lcd.o.d lcd.c -o lcd.o

    Linking: main.elf
    avr-gcc -mmcu=atmega8 -I. -gdwarf-2   -O0 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-adhlns=main.o  -std=gnu99 -Wp,-M,-MP,-MT,main.o,-MF,.dep/main.elf.d main.o lcd.o   --output main.elf -Wl,-Map=main.map,--cref    -lm

    Creating load file for Flash: main.hex
    avr-objcopy -O ihex -R .eeprom main.elf main.hex

    Creating load file for EEPROM: main.eep
    avr-objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" \
       --change-section-lma .eeprom=0 -O ihex main.elf main.eep
    avr-objcopy: --change-section-lma .eeprom=0x00000000 never used

    Creating Extended Listing: main.lss
    avr-objdump -h -S main.elf > main.lss

    Creating Symbol Table: main.sym
    avr-nm -n main.elf > main.sym

    Size after:
    main.elf  :
    section            size      addr
    .text              6244         0
    .data                 6   8388704
    .stab              7032         0
    .stabstr            772         0
    .debug_aranges       64         0
    .debug_pubnames     254         0
    .debug_info        2405         0
    .debug_abbrev       496         0
    .debug_line        3048         0
    .debug_frame        256         0
    .debug_str          444         0
    Total             21021

    Errors: none
    -------- end --------

  • #4
    Moderator of Microcontroller designs
    Na etapie makefile wydaje się, że wszystko jest ok. Problem może więc leżeć w pliku nagłówkowym z prototypami funkcji - np. jego brak, co skutkuje implicit function declaration, lub w tym, że jakieś zmienne w nagłówku są zadeklarowane bez extern. Musałbyś pokazać minimaly kod stwarzający problem. Przejrzy jteż wygenerowany plik map, masz tam wszystkie symbole wraz z adresami, możesz sprawdzić poprawność linkowania.
  • #5
    Level 10  
    Plik naglowkowy z prototypamima funkcji jest obecny - lcd.h.
    Zwrociles jednak uwage na deklaracje zmiennych w owym pliku. Nie ma tam wyrazenia extern.

    Zalaczam pliki ktore uzywam:
    lcd.h - plik naglowkowy
    lcd.c - kod funkcji
    main.c - plik z funkcja main()
    main-dziala.c - plik z funkcja main() oraz z zawartoscia pliku lcd.c

    Moglbys wskazac gdzie extern powinno byc dopisane?
    Dziekuje za pomoc.
  • #6
    Level 10  
    Czy ktokolwiek mial podobny problem?
    Czy wina lezy po stronie Makefile'a czy moze jest blad w kodzie (brak deklaracji extern)?

    Z gory dziekuje