annotate Makefile @ 484:4a51e2bf689b

a few fixes
author Matt Johnston <matt@ucc.asn.au>
date Thu, 06 Feb 2014 20:35:43 +0800
parents b73ea78317dc
children
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1 # Name: Makefile
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2 # Author: <insert your name here>
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3 # Copyright: <insert your copyright message here>
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4 # License: <insert your license reference here>
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5
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6 # This is a prototype Makefile. Modify it according to your needs.
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7 # You should at least check the settings for
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8 # DEVICE ....... The AVR device you compile for
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9 # CLOCK ........ Target AVR clock rate in Hertz
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10 # OBJECTS ...... The object files created from your source files. This list is
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11 # usually the same as the list of source files with suffix ".o".
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12 # PROGRAMMER ... Options to avrdude which define the hardware you use for
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13 # uploading to the AVR and the interface where this hardware
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14 # is connected. We recommend that you leave it undefined and
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15 # add settings like this to your ~/.avrduderc file:
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16 # default_programmer = "stk500v2"
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17 # default_serial = "avrdoper"
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18 # FUSES ........ Parameters for avrdude to flash the fuses appropriately.
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19
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20 DEVICE = atmega328
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21 PROGDEVICE = atmega328p
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22 CLOCK = 2000000
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23 PROGRAMMER = #-c stk500v2 -P avrdoper
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24 PROGRAMMER = -c stk500 -P ~/dev/stk500 -p $(PROGDEVICE) -B 2
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25 SOURCE_1WIRE = onewire.c simple_ds18b20.c crc8.c
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26 SOURCE = main.c
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27 SOURCE += $(SOURCE_1WIRE)
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28 LIBS = -lm
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29
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30 # default but 2mhz
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31 FUSES = -U hfuse:w:0xd9:m -U lfuse:w:0x62:m
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33 # ATMega8 fuse bits used above (fuse bits for other devices are different!):
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34 # Example for 8 MHz internal oscillator
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35 # Fuse high byte:
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36 # 0xd9 = 1 1 0 1 1 0 0 1 <-- BOOTRST (boot reset vector at 0x0000)
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37 # ^ ^ ^ ^ ^ ^ ^------ BOOTSZ0
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38 # | | | | | +-------- BOOTSZ1
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39 # | | | | +---------- EESAVE (set to 0 to preserve EEPROM over chip erase)
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40 # | | | +-------------- WDTON
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41 # | | +---------------- SPIEN (if set to 1, serial programming is disabled)
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42 # | +------------------ DWEN
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43 # +-------------------- RSTDISBL (if set to 0, RESET pin is disabled)
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44 # Fuse low byte:
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45 # 0x62 = 0 1 1 0 0 0 1 0
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46 # ^ ^ \ / \--+--/
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47 # | | | +------- CKSEL 3..0 (8M internal RC)
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48 # | | +--------------- SUT 1..0 (slowly rising power)
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49 # | +------------------ CKOUT
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50 # +-------------------- CLKDIV8
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51 #
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52 # For computing fuse byte values for other devices and options see
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53 # the fuse bit calculator at http://www.engbedded.com/fusecalc/
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54
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55
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56 # Tune the lines below only if you know what you are doing:
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57
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58 AVRDUDE = avrdude $(PROGRAMMER)
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59 COMPILE = avr-gcc -Wall -Os -DF_CPU=$(CLOCK) -mmcu=$(DEVICE) -g -std=c99 -mcall-prologues -fdata-sections -ffunction-sections -Wl,--gc-sections -Wl,--relax --combine -fwhole-program -Wl,-u,vfprintf -lprintf_flt -lm
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60
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61 # symbolic targets:
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62 all: main.hex
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63
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64 .c.o:
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65 $(COMPILE) -c $< -o $@
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66
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67 .S.o:
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68 $(COMPILE) -x assembler-with-cpp -c $< -o $@
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69 # "-x assembler-with-cpp" should not be necessary since this is the default
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70 # file type for the .S (with capital S) extension. However, upper case
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71 # characters are not always preserved on Windows. To ensure WinAVR
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72 # compatibility define the file type manually.
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73
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74 .c.s:
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75 $(COMPILE) -S $< -o $@
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76
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77 flash: all
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78 $(AVRDUDE) -U flash:w:main.hex:i
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79
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80 checkprog:
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81 $(AVRDUDE) -v
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82
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83 fuse:
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84 $(AVRDUDE) $(FUSES)
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85
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86 # Xcode uses the Makefile targets "", "clean" and "install"
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87 install: flash
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88
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89 # if you use a bootloader, change the command below appropriately:
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90 load: all
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91 bootloadHID main.hex
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92
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93 clean:
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94 rm -f main.hex main.elf $(OBJECTS)
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95
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96 # file targets:
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97 main.elf: $(SOURCE)
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98 $(COMPILE) -o main.elf $(SOURCE) $(LIBS)
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99
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100 main.hex: main.elf
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101 rm -f main.hex
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102 avr-objcopy -j .text -j .data -O ihex main.elf main.hex
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103 avr-size --format=avr --mcu=$(DEVICE) main.elf
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104 # If you have an EEPROM section, you must also create a hex file for the
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105 # EEPROM and add it to the "flash" target.
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106
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107 # Targets for code debugging and analysis:
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108 disasm: main.elf
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109 avr-objdump -d main.elf
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110
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111 cpp:
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112 $(COMPILE) -E main.c