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88 lines (74 loc) · 3.56 KB
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# Name: Makefile
# Author: <insert your name here>
# Copyright: <insert your copyright message here>
# License: <insert your license reference here>
# This is a prototype Makefile. Modify it according to your needs.
# You should at least check the settings for
# DEVICE ....... The AVR device you compile for
# CLOCK ........ Target AVR clock rate in Hertz
# OBJECTS ...... The object files created from your source files. This list is
# usually the same as the list of source files with suffix ".o".
# PROGRAMMER ... Options to avrdude which define the hardware you use for
# uploading to the AVR and the interface where this hardware
# is connected.
# FUSES ........ Parameters for avrdude to flash the fuses appropriately.
DEVICE = atmega8515
CLOCK = 8000000
PROGRAMMER = -c USBasp -P avrdoper
SOURCE = main.c
FUSES = -U hfuse:w:0xd9:m -U lfuse:w:0x24:m
# ATMega8 fuse bits (fuse bits for other devices are different!):
# Example for 8 MHz internal oscillator
# Fuse high byte:
# 0xd9 = 1 1 0 1 1 0 0 1 <-- BOOTRST (boot reset vector at 0x0000)
# ^ ^ ^ ^ ^ ^ ^------ BOOTSZ0
# | | | | | +-------- BOOTSZ1
# | | | | +---------- EESAVE (set to 0 to preserve EEPROM over chip erase)
# | | | +-------------- CKOPT (clock option, depends on oscillator type)
# | | +---------------- SPIEN (if set to 1, serial programming is disabled)
# | +------------------ WDTON (if set to 0, watchdog is always on)
# +-------------------- RSTDISBL (if set to 0, RESET pin is disabled)
# Fuse low byte:
# 0x24 = 0 0 1 0 0 1 0 0
# ^ ^ \ / \--+--/
# | | | +------- CKSEL 3..0 (8M internal RC)
# | | +--------------- SUT 1..0 (slowly rising power)
# | +------------------ BODEN (if 0, brown-out detector is enabled)
# +-------------------- BODLEVEL (if 0: 4V, if 1: 2.7V)
# Example for 12 MHz external crystal:
# Fuse high byte:
# 0xc9 = 1 1 0 0 1 0 0 1 <-- BOOTRST (boot reset vector at 0x0000)
# ^ ^ ^ ^ ^ ^ ^------ BOOTSZ0
# | | | | | +-------- BOOTSZ1
# | | | | +---------- EESAVE (set to 0 to preserve EEPROM over chip erase)
# | | | +-------------- CKOPT (clock option, depends on oscillator type)
# | | +---------------- SPIEN (if set to 1, serial programming is disabled)
# | +------------------ WDTON (if set to 0, watchdog is always on)
# +-------------------- RSTDISBL (if set to 0, RESET pin is disabled)
# Fuse low byte:
# 0x9f = 1 0 0 1 1 1 1 1
# ^ ^ \ / \--+--/
# | | | +------- CKSEL 3..0 (external >8M crystal)
# | | +--------------- SUT 1..0 (crystal osc, BOD enabled)
# | +------------------ BODEN (if 0, brown-out detector is enabled)
# +-------------------- BODLEVEL (if 0: 4V, if 1: 2.7V)
# Tune the lines below only if you know what you are doing:
AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE)
COMPILE = avr-gcc -Wall -Os -std=c99 -DF_CPU=$(CLOCK) -mmcu=$(DEVICE)
all: keyboardcontroller.hex
keyboardcontrollerl: all
$(AVRDUDE) -U flash:w:keyboardcontroller.hex:i
flash: all
$(AVRDUDE) -U flash:w:keyboardcontroller.hex:i
fuse:
$(AVRDUDE) $(FUSES)
clean:
rm -f *.hex *.elf *.o
# file targets:
keyboardcontroller.elf: $(SOURCE)
$(COMPILE) -o keyboardcontroller.elf $(SOURCE)
keyboardcontroller.hex: keyboardcontroller.elf
rm -f keyboardcontroller.hex
avr-objcopy -j .text -j .data -O ihex keyboardcontroller.elf keyboardcontroller.hex
# If you have an EEPROM section, you must also create a hex file for the
# EEPROM and add it to the "flash" target.