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Makefile
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# Makefile
# Copyright (c) 2021 Kimmo Kulovesi, https://arkku.dev/
###############################################################################
# Put your local settings in "local.mk", it is ignored by Git.
-include local.mk
CC=avr-gcc
OPTIMIZATION=s
CC_FLAGS=-I$(DEVICE) -I. $(AVR_FLAGS)
CFLAGS=-O$(OPTIMIZATION) -Wall -std=c11 -pedantic -Wextra -Wno-unused-parameter $(CUSTOM_FLAGS) $(CC_FLAGS) $(DEVICE_FLAGS) $(CONFIG_FLAGS)
LD_FLAGS=$(AVR_FLAGS)
LDFLAGS=-O$(OPTIMIZATION) $(LD_FLAGS)
AR=avr-ar
ARFLAGS=rcs
OBJCOPY=avr-objcopy
AVRDUDE=avrdude
AVR_FLAGS=-mmcu=$(MCU) -DF_CPU=$(F_CPU) -DF_USB=$(F_USB)
ifneq (,$(TARGET))
DEVICE = $(TARGET)
else
DEVICE ?= ps2usb
TARGET = $(DEVICE)
endif
HEX ?= $(DEVICE:=.hex)
BIN = $(HEX:.hex=.bin)
OBJ = $(DEVICE:=.o)
OBJS = $(OBJ) usbkbd_descriptors.o usbkbd.o keys.o $(DEVICE_OBJS)
BUILDDIR ?= $(DEVICE)/build
all: $(HEX)
vpath %.c . $(DEVICE)
vpath %.h . $(DEVICE)
ifneq (,$(CUSTOM_DIR))
CUSTOM_FLAGS += -I$(CUSTOM_DIR)
MACROS_C = $(CUSTOM_DIR)/macros.c
LAYERS_C = $(CUSTOM_DIR)/layers.c
else # ^ CUSTOM_DIR
ifneq (,$(wildcard $(DEVICE)/macros.c))
MACROS_C = $(DEVICE)/macros.c
else
MACROS_C = macros.c
endif
ifneq (,$(wildcard $(DEVICE)/layers.c))
LAYERS_C = $(DEVICE)/layers.c
else
LAYERS_C = layers.c
endif
endif
BOARD = NONE
-include $(DEVICE)/local.mk
include $(DEVICE)/$(DEVICE).mk
### AVR MCU ###################################################################
MCU ?= atmega32u4
F_CPU ?= 16000000UL
F_USB ?= $(F_CPU)
# LFUSE configures the clock speed; it is probably correct out of the box if
# you use a ready-made board. If not, `make fuses LFUSE=CE` for a 16 MHz
# crystal oscillator.
#LFUSE ?= CE
HFUSE ?= D0
EFUSE ?= FB
#EFUSE ?= F4 # HWBEN
#### BURNER ###################################################################
# Specify the burner on the command-line if you wish, e.g.,
# make burn BURNER=avrisp2 PORT=/dev/ttyUSB0 BPS=115200
# Burner device
BURNER ?= dragon_isp
# Burner port
#PORT ?= /dev/ttyUSB0
# Burner speed
#BPS ?= 115200
# Protocol for the bootloader, e.g., make upload PORT=/dev/cu.usbmodem1401
UPLOAD_PROTOCOL ?= avr109
###############################################################################
OBJECT_FILES = $(OBJS:%.o=$(BUILDDIR)/%.o)
$(BUILDDIR)/avrusb.o: avrusb.h usb_hardware.h usbkbd.h usbkbd_config.h usb.h usbkbd_descriptors.h generic_hid.h progmem.h aakbd.h local.mk
$(BUILDDIR)/usbkbd.o: usbkbd.h usb_hardware.h usbkbd_config.h usb.h usbkbd_descriptors.h usb_keys.h generic_hid.h aakbd.h progmem.h local.mk
$(BUILDDIR)/usbkbd_descriptors.o: usbkbd_descriptors.h usbkbd_config.h usb.h usb_keys.h generic_hid.h progmem.h aakbd.h local.mk
$(BUILDDIR)/keys.o: keys.h keycodes.h usbkbd.h usbkbd_config.h aakbd.h usb_keys.h layers.h macros.h progmem.h $(MACROS_C) $(LAYERS_C)
$(OBJECT_FILES): Makefile $(DEVICE)/$(DEVICE).mk $(wildcard local.mk) $(wildcard $(DEVICE)/local.mk)
$(HEX): $(BIN)
$(BUILDDIR)/%.o: %.c | $(BUILDDIR)
$(CC) $(CFLAGS) -c $< -o $@
# Suppress some warnings here to allow more convenient layer init
$(BUILDDIR)/keys.o: keys.c
$(CC) $(CFLAGS) -Wno-pedantic -Wno-override-init -Wno-type-limits -c $< -o $@
$(BIN): $(OBJECT_FILES)
$(CC) $(LDFLAGS) -s -o $@ $+
@chmod a-x $@
@avr-size $@
$(HEX): $(BIN)
@echo $(OBJECT_FILES)
$(OBJCOPY) -j .text -j .data -O ihex $< $@
local.mk:
touch $@
$(DEVICE)/local.mk:
touch $@
$(BUILDDIR):
mkdir -p $(BUILDDIR)
$(LAYERS_C): $(wildcard $(DEVICE)/template_layers.c) template_layers.c
@[ ! -r $@ ] && cp -v -f $< $@ || echo NOTICE: $< is newer than $@ - silence with: touch $@
$(MACROS_C): $(wildcard $(DEVICE)/template_macros.c) template_macros.c
@[ ! -r $@ ] && cp -v -f $< $@ || echo NOTICE: $< is newer than $@ - silence with: touch $@
burn: $(HEX)
$(AVRDUDE) -c $(BURNER) $(if $(PORT),-P $(PORT) ,)$(if $(BPS),-b $(BPS) ,)-p $(MCU) -U flash:w:$< -v
upload: $(HEX)
stty -f $(if $(PORT),$(PORT),/dev/ttyUSB0) 1200
$(AVRDUDE) -c $(UPLOAD_PROTOCOL) $(if $(PORT),-P $(PORT),-P /dev/ttyUSB0) $(if $(BPS),-b $(BPS),) -p $(MCU) -U flash:w:$< -v
fuses:
$(AVRDUDE) -c $(BURNER) $(if $(PORT),-P $(PORT) ,)$(if $(BPS),-b (BPS) ,)-p $(MCU) -U efuse:w:0x$(EFUSE):m -U hfuse:w:0x$(HFUSE):m $(if $(LFUSE),-U lfuse:w:0x$(LFUSE):m,)
unlock:
$(AVRDUDE) -c $(BURNER) $(if $(PORT),-P $(PORT) ,)$(if $(BPS),-b $(BPS) ,)-p $(MCU) -U lock:w:0x3F:m -v
lock:
$(AVRDUDE) -c $(BURNER) $(if $(PORT),-P $(PORT) ,)$(if $(BPS),-b $(BPS) ,)-p $(MCU) -U lock:w:0x0F:m -v
.ccls: Makefile local.mk $(DEVICE)/local.mk
@echo $(CC) >$@
@echo --target=avr >>$@
@echo $(CFLAGS) | awk '{ gsub(/["][^"]*["]/, "\"!SKIP!\""); for (i=1; i<=NF; i++) { if (!($$i ~ /!SKIP!/)) print $$i } }' >>$@
@echo -nostdinc >>$@
@[ -d /usr/lib/avr/include ] && echo -I/usr/lib/avr/include >>$@ || true
@[ -d /usr/local/avr/include ] && echo -I/usr/local/avr/include >>$@ || true
@echo | $(CC) $(CFLAGS) -E -Wp,-v - 2>&1 | awk '/#include .* search starts here:/ { output=1; next } !output { next } /^End/ || /^#/ { output=0 } output && $$1 ~ /^\// { sub(/^[ ]*/, ""); print "-I" $$0 }' >>$@
@echo -Wno-attributes >>$@
@echo -Wno-gnu-zero-variadic-macro-arguments >>$@
@cat $@
clean:
rm -f *.o
@[ -d ./$(BUILDDIR) ] && rm -f ./$(BUILDDIR)/*.o || true
@[ -e $(BUILDDIR) ] && rmdir $(BUILDDIR) || true
distclean: | clean
rm -f *.hex *.bin .ccls
find . -name '*.o' -type f -delete
find . -name 'build' -type d -d -exec rmdir '{}' ';'
@[ -e $(MACROS_C) -o -e $(LAYERS_C) ] && echo NOT deleting $(MACROS_C) and $(LAYERS_C) files! || true
backup:
cp $(MACROS_C) $(MACROS_C)~
cp $(LAYERS_C) $(LAYERS_C)~
.PHONY: all clean distclean burn fuses upload lock unlock bootloader backup