diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..90edd99 --- /dev/null +++ b/Makefile @@ -0,0 +1,164 @@ +.PHONY: \ + vars \ + help \ + clean \ + compile \ + link \ + upload \ + fuses \ + check-fuses + +# Hack to get the directory this makefile is in: +MKFILE_PATH := $(lastword $(MAKEFILE_LIST)) +MKFILE_DIR := $(notdir $(patsubst %/,%,$(dir $(MKFILE_PATH)))) +MKFILE_ABSDIR := $(abspath $(MKFILE_DIR)) + +# Hack to get all *.h files into compile dependencies: +HEADERS = $(shell find $(MKFILE_DIR) -name "*.h") + + +BUILDTMP ?= $(MKFILE_DIR)/build-tmp +OPTIMIZATION ?= -Os +AVRCC ?= avr-gcc +AVRDUDE ?= avrdude +#--------------------------------------------------------- +# AVRDUDE_FLASHARG: +# This preserves the chip memory when updating the fuses. +# To erase the chip when setting fuses, do: +# +# make AVRDUDE_FLASHARG=-e fuses +# +AVRDUDE_FLASHARG ?= -D +#--------------------------------------------------------- +AVR_SIZE ?= avr-size +AVR_OBJCOPY ?= avr-objcopy +DEVICE ?= attiny85 +CLOCK ?= 8000000L +PROGRAMMER ?= avrisp +PORT ?= /dev/ttyACM0 +BAUD ?= 19200 +UNIT ?= main.c +FUSE_EXT ?= 0xff +FUSE_HIGH ?= 0xdf +FUSE_LOW ?= 0xe2 + +# Misc target info: +help_spacing := 12 + +.DEFAULT_GOAL := compile + +#--------------------------------------------------------- +# Ensure temp directories. +# +# In order to ensure temp dirs exit, we include a file +# that doesn't exist, with a target declared as PHONY +# (above), and then have the target create our tmp dirs. +#--------------------------------------- +-include ensure-tmp +ensure-tmp: + @mkdir -p $(BUILDTMP) + +vars: ## Print relevant environment vars + @printf "%-20.20s%s\n" "MKFILE_PATH:" "$(MKFILE_PATH)" + @printf "%-20.20s%s\n" "MKFILE_DIR:" "$(MKFILE_DIR)" + @printf "%-20.20s%s\n" "MKFILE_ABSDIR:" "$(MKFILE_ABSDIR)" + @printf "%-20.20s%s\n" "BUILDTMP:" "$(BUILDTMP)" + @printf "%-20.20s%s\n" "OPTIMIZATION:" "$(OPTIMIZATION)" + @printf "%-20.20s%s\n" "AVRCC:" "$(AVRCC)" + @printf "%-20.20s%s\n" "AVRDUDE:" "$(AVRDUDE)" + @printf "%-20.20s%s\n" "AVRDUDE_OPTS:" "$(AVRDUDE_OPTS)" + @printf "%-20.20s%s\n" "AVR_SIZE:" "$(AVR_SIZE)" + @printf "%-20.20s%s\n" "AVR_OBJCOPY:" "$(AVR_OBJCOPY)" + @printf "%-20.20s%s\n" "DEVICE:" "$(DEVICE)" + @printf "%-20.20s%s\n" "CLOCK:" "$(CLOCK)" + @printf "%-20.20s%s\n" "PROGRAMMER:" "$(PROGRAMMER)" + @printf "%-20.20s%s\n" "BAUD:" "$(BAUD)" + @printf "%-20.20s%s\n" "UNIT:" "$(UNIT)" + +help: ## Print this makefile help menu + @echo "TARGETS:" + @grep '^[a-z_\-]\{1,\}:.*##' $(MAKEFILE_LIST) \ + | sed 's/^\([a-z_\-]\{1,\}\): *\(.*[^ ]\) *## *\(.*\)/\1:\t\3 (\2)/g' \ + | sed 's/^\([a-z_\-]\{1,\}\): *## *\(.*\)/\1:\t\2/g' \ + | awk '{$$1 = sprintf("%-$(help_spacing)s", $$1)} 1' \ + | sed 's/^/ /' + @printf "\nUsage:\n make \\ \n %s \\ \n %s \\ \n %s \\ \n %s\n" \ + "USBDEVICE=/dev/cu.usbserial-1234" \ + "UNIT=my_source.c" \ + "DEVICE=<mcu>" \ + "<make target>" + +clean: ## Clean build artifacts + rm -rf $(BUILDTMP)/* + rm -vf *.s + +compile: $(UNIT) $(HEADERS) ## Compile project + $(AVRCC) \ + -c \ + -Wall \ + $(OPTIMIZATION) \ + -DF_CPU=$(CLOCK) \ + -mmcu=$(DEVICE) \ + -I$(MKFILE_DIR) \ + $(UNIT) \ + -o $(BUILDTMP)/$(UNIT).o + +link: compile ## Link compilation artifacts and package for upload + $(AVRCC) \ + -w \ + $(OPTIMIZATION) \ + -flto \ + -fuse-linker-plugin \ + -Wl,--gc-sections \ + -mmcu=$(DEVICE) \ + -o $(BUILDTMP)/$(UNIT).elf \ + $(BUILDTMP)/$(UNIT).o \ + -L$(BUILDTMP) \ + $(LDFLAGS) + $(AVR_OBJCOPY) \ + -O ihex \ + -j .eeprom \ + --set-section-flags=.eeprom=alloc,load \ + --no-change-warnings \ + --change-section-lma .eeprom=0 \ + $(BUILDTMP)/$(UNIT).elf \ + $(BUILDTMP)/$(UNIT).eep + $(AVR_OBJCOPY) \ + -O ihex \ + -R .eeprom \ + $(BUILDTMP)/$(UNIT).elf \ + $(BUILDTMP)/$(UNIT).hex + $(AVR_SIZE) \ + -A $(BUILDTMP)/$(UNIT).elf + +upload: link ## Upload + $(AVRDUDE) \ + $(AVRDUDE_OPTS) \ + -v \ + -p$(DEVICE) \ + -c$(PROGRAMMER) \ + -P${PORT} \ + -b$(BAUD) \ + -Uflash:w:$(BUILDTMP)/$(UNIT).hex:i + + +fuses: ## Flash the fuses + $(AVRDUDE) \ + $(AVRDUDE_OPTS) \ + -v \ + -D \ + -p$(DEVICE) \ + -c$(PROGRAMMER) \ + -P${PORT} \ + -b$(BAUD) \ + -Uefuse:w:$(FUSE_EXT):m \ + -Uhfuse:w:$(FUSE_HIGH):m \ + -Ulfuse:w:$(FUSE_LOW):m + +check-fuses: ## Verify device signature and check fuse values + $(AVRDUDE) \ + $(AVRDUDE_OPTS) \ + -p$(DEVICE) \ + -c$(PROGRAMMER) \ + -P${PORT} \ + -b$(BAUD) |