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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 = atmega8 |
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21 CLOCK = 8000000 |
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22 PROGRAMMER = #-c stk500v2 -P avrdoper |
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23 OBJECTS = main.o |
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24 FUSES = -U hfuse:w:0xd9:m -U lfuse:w:0x24:m |
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25 |
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26 # ATMega8 fuse bits used above (fuse bits for other devices are different!): |
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27 # Example for 8 MHz internal oscillator |
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28 # Fuse high byte: |
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29 # 0xd9 = 1 1 0 1 1 0 0 1 <-- BOOTRST (boot reset vector at 0x0000) |
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30 # ^ ^ ^ ^ ^ ^ ^------ BOOTSZ0 |
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31 # | | | | | +-------- BOOTSZ1 |
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32 # | | | | +---------- EESAVE (set to 0 to preserve EEPROM over chip erase) |
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33 # | | | +-------------- CKOPT (clock option, depends on oscillator type) |
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34 # | | +---------------- SPIEN (if set to 1, serial programming is disabled) |
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35 # | +------------------ WDTON (if set to 0, watchdog is always on) |
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36 # +-------------------- RSTDISBL (if set to 0, RESET pin is disabled) |
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37 # Fuse low byte: |
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38 # 0x24 = 0 0 1 0 0 1 0 0 |
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39 # ^ ^ \ / \--+--/ |
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40 # | | | +------- CKSEL 3..0 (8M internal RC) |
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41 # | | +--------------- SUT 1..0 (slowly rising power) |
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42 # | +------------------ BODEN (if 0, brown-out detector is enabled) |
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43 # +-------------------- BODLEVEL (if 0: 4V, if 1: 2.7V) |
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44 # |
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45 # For computing fuse byte values for other devices and options see |
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46 # the fuse bit calculator at http://www.engbedded.com/fusecalc/ |
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47 |
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48 |
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49 # Tune the lines below only if you know what you are doing: |
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50 |
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51 AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE) |
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52 COMPILE = avr-gcc -Wall -Os -DF_CPU=$(CLOCK) -mmcu=$(DEVICE) -g |
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53 |
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54 # symbolic targets: |
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55 all: main.hex |
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56 |
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57 .c.o: |
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58 $(COMPILE) -c $< -o $@ |
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59 |
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60 .S.o: |
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61 $(COMPILE) -x assembler-with-cpp -c $< -o $@ |
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62 # "-x assembler-with-cpp" should not be necessary since this is the default |
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63 # file type for the .S (with capital S) extension. However, upper case |
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64 # characters are not always preserved on Windows. To ensure WinAVR |
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65 # compatibility define the file type manually. |
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66 |
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67 .c.s: |
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68 $(COMPILE) -S $< -o $@ |
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69 |
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70 flash: all |
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71 $(AVRDUDE) -U flash:w:main.hex:i |
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72 |
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73 fuse: |
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74 $(AVRDUDE) $(FUSES) |
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75 |
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76 # Xcode uses the Makefile targets "", "clean" and "install" |
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77 install: flash fuse |
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78 |
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79 # if you use a bootloader, change the command below appropriately: |
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80 load: all |
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81 bootloadHID main.hex |
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82 |
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83 clean: |
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84 rm -f main.hex main.elf $(OBJECTS) |
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85 |
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86 # file targets: |
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87 main.elf: $(OBJECTS) |
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88 $(COMPILE) -o main.elf $(OBJECTS) |
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89 |
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90 main.hex: main.elf |
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91 rm -f main.hex |
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92 avr-objcopy -j .text -j .data -O ihex main.elf main.hex |
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93 avr-size --format=avr --mcu=$(DEVICE) main.elf |
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94 # If you have an EEPROM section, you must also create a hex file for the |
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95 # EEPROM and add it to the "flash" target. |
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96 |
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97 # Targets for code debugging and analysis: |
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98 disasm: main.elf |
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99 avr-objdump -d main.elf |
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100 |
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101 cpp: |
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102 $(COMPILE) -E main.c |
