File avr_common.mk of Package avr-libc
# avr_common.mk -- common Makefile macros for avr projects
#
# (C) Copyright 2008, Juergen Weigert, jw@suse.de
# Distribute under GPLv2, use with care.
#
# 2007-07-23, jw, features: VPATH support
# 2008-01-27, jw added make depend, make help.
# make NNmhz did not generates cpu_mhz.h - fixed.
#
#
# Makefile example:
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# # Makefile for project $(NAME)
# # Distribute under GPLv2, use with care.
# #
# # 2007-06-08, jw
#
# NAME = tinyPWMout
# OFILES = $(NAME).o eeprom.o i2c_slave_cb.o
# CPU = tiny2313
# TOP_DIR = ..
#
# include $(TOP_DIR)/avr_common.mk
#
# distclean::
# rm -f download* ee_data.*
#
# ## header file dependencies
# #############################
# $(NAME).o: cpu_mhz.h config.h eeprom.h i2c_slave_cb.h
# eeprom.o: eeprom.h cpu_mhz.h config.h
# i2c_slave_cb.o: i2c_slave_cb.h cpu_mhz.h config.h
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
ifeq ($(TOP_DIR),)
TOP_DIR = .
endif
ifeq ($(PROJ),)
PROJ := $(NAME)
endif
CFILES := $(OFILES:%.o=%.c)
## uisp-2050207 does not know tiny24
#ISP = $(TOP_DIR)/avr_isp.pl -s uisp -p $(CPU)
ISP = $(TOP_DIR)/avr_isp.pl -s avrdude -p $(CPU)
CC = avr-gcc -mmcu=at$(CPU)
O2HEX = avr-objcopy -O ihex
O2HEX_T = $(O2HEX) -j .text -j .data
O2HEX_EE = $(O2HEX) -j .eeprom --change-section-lma .eeprom=0
OBJDUMP = avr-objdump
OBJCOPY = avr-objcopy -v
AVRSIZE = avr-size
# don't use -mint8, or preprocesor will issue silly warnings.
# have -I. here, so that .c files from VPATH find .h files in the target dir, not source dir.
CFLAGS = -I. -Wall -g -O2 # -mint8
#CFLAGS = -I. -Wall -g -Os -mint8
# .c files found via VPATH say
# include <config.h> to prefer the config.h from the target directory via -I
# include "config.h" to prefer the config.h next to themselves.
ifeq ($(TOP_DIR),)
else
VPATH = $(TOP_DIR)
CFLAGS += -I$(VPATH)
endif
DIST_EXCLUDE = --exclude \*.tgz --exclude core --exclude \*.orig --exclude \*.swp --exclude
MAKE_SUBDIRS = for d in $(SUBDIRS); do $(MAKE) $(MFLAGS) -C $$d $@; done
MAKE_SUBDIRS_NP = for d in $(SUBDIRS); do $(MAKE) $(MFLAGS) --no-print-directory -C $$d $@; done
SHELL = /bin/sh
# .PHONY: $(NAME).hex $(NAME)-src.hex version.h flashcount
# always rebuild version.h and flashcount
.PHONY: version.h flashcount help
ifeq ($(NAME),)
all:
else
all: $(NAME).hex
endif
%.hex: %.out; $(O2HEX_T) $^ $@
flashcount:
@read n < flashcount; echo > flashcount "$$(($$n + 1))"
@echo -n flashcount=
@cat flashcount
help:
@echo
@echo avr_common.mk uses the following variables:
@echo
@echo 'NAME name of the binary. Specify in Makefile, no default.'
@echo 'PROJ name of the project. Specify in Makefile, defaults to "$$(NAME)".'
@echo 'OFILE list of object files. Should include at least "$$(NAME).o".'
@echo ' Specify in Makefile, no default.'
@echo 'TOP_DIR directory where avr_common.mk is found. Default "."'
@echo 'SUBDIRS directories with own Makefiles. Specify in Makefile, optional.'
@echo 'CC compiler name. Default: "$(value CC)"'
@echo 'CFLAGS compiler options. Default: "$(value CFLAGS)"'
@echo 'LDFLAGS compiler options. Default: "$(value LDFLAGS)"'
@echo 'ISP upload helper. Default: "$(value ISP)"'
@echo 'CPU name of the ATMEL processor chip. Specify in Makefile,'
@echo ' no default. Valid names with $(value CC) are:'
@cpu=`$(CC) -mmcu=not_a_valid_mcu -x c /dev/null 2>&1 | grep ' at'`; echo $$cpu | fold -s
@echo
@echo avr_common.mk offers the following additional make targets:
@echo
@echo "help - print this online help."
@echo 'depend - create depend.mk using $$(OFILES).'
@echo 'all - compile and link $$(NAME) using $$(OFILES).'
@echo 'reset - reset the device. Also a useful connectivity test.'
@echo 'upload - create and load $$(NAME) into the device.'
@echo 'flashcount - file with an upload counter.'
@echo 'erase - erase flash (and eeprom) of device.'
@echo '1mhz 2.5mhz 4mhz 8mhz 16mhz 20mhz'
@echo ' - program the device clock speed.'
@echo 'download - retrieve binary from device flash.'
@echo 'download_ee - retrieve eeprom contents from device.'
@echo 'clean - remove all generated (and temporary) files.'
@echo 'dist - pack everything into a compressed tar archive.'
@echo 'version - increment the minor version number in file "version.h"'
@echo ' and rename the current directory accordingly.'
@echo
@echo 'For further details, see $(TOP_DIR)/avr_common.mk'
depend depend.mk: $(CFILES)
$(CC) -MM $(CFILES) > depend.mk || rm -f depend.mk
install: all upload
# erase zaps the eeprom. be careful with that...
erase: download_ee flashcount
$(ISP) erase
upload_dist: upload_all
upload_src: upload_all
install_all: upload_all
install_src: upload_all
install_dist: upload_all
ifeq ($(NAME),)
else
## use egrep to make dude half quiet.
up upload: $(NAME).hex flashcount
$(ISP) up $(NAME).hex 2>&1 | egrep '(signature|bytes)'
@# test "`wc -c < $(NAME)-ee.hex`" -gt 13 && $(ISP) up_ee $(NAME)-ee.hex
ee_up ee_upload upload_ee up_ee: $(NAME)-ee.hex
$(ISP) up_ee $(NAME)-ee.hex
# if __bss_start > 60, we probably have strings in RAM, check __data
# if __bss_end gets close to __stack, think of subroutine calls.
#
# In order to know how much flash the final program will consume, one needs to
# add the values for both, .text and .data (but not .bss), while the amount of
# pre-allocated SRAM is the sum of .data and .bss.
$(NAME).out: $(OFILES)
$(CC) $(CFLAGS) -Wl,-Map,$(NAME).map,--cref -o $(NAME).out $(OFILES)
@$(AVRSIZE) $(NAME).out
# @$(OBJDUMP) -t $(NAME).out | egrep '(__stack|__bss|_etext)'
# @$(OBJDUMP) -h $(NAME).out | \
# perl -ane '{printf "$$1 %d bytes.\n", hex($$2) if $$_ =~ m{\.(text)\s+(\S+)}}'
# identical implicit rule using $(CC) and $(CFLAGS) exists.
# $(NAME).o: $(NAME).c
# $(CC) $(CFLAGS) -c $<
$(NAME).s: $(NAME).c
$(CC) $(CFLAGS) -S -o $(NAME).s -c $<
endif
ee_down ee_download download_ee down_ee:
$(ISP) down_ee ee_data.hex
@mkdir -p down
d=`date '+%Y%m%d%H%M%S'`; \
$(OBJCOPY) -I ihex -O binary ee_data.hex down/ee_data.bin.$$d; \
set -x; ln -sf down/ee_data.bin.$$d ee_data.bin
1mhz 2.5mhz 4mhz 8mhz 16mhz 20mhz:; $(ISP) -q clock $@ cpu_mhz.h
download down reset:; $(ISP) $@
install.sh: Makefile
echo > $@ '#! /bin/sh'
echo >> $@ '# $@ -- install binaries, how the Makefile does it.'
echo >> $@ '# (C) 2005 jw@suse.de, distribute under GPL, use with care.'
echo >> $@
echo >> $@ 'ISP="$(ISP)"'
echo >> $@ 'set -x'
make -n upload | sed -n -e 's@$(ISP)@$$ISP@p' >> $@
clock=`grep 'CPU_MHZ\b' cpu_mhz.h|sed -e 's@.*CPU_MHZ@@'`; \
echo \$$ISP clock $${clock}mhz >> $@
chmod a+x $@
clean::
rm -f *.o *.s *.out *.hex
distclean:: clean
rm -f *.orig *.map *~
ifeq ($(TOP_DIR),.)
# := evaluates immediatly, but = propagates.
VERSION = $(shell read a b < version; printf "%d.%02d" $$a $$b)
VERSION_MAJ = $(shell read a b < version; echo $$a)
VERSION_MIN = $(shell read a b < version; echo $$b)
OLD_VERSION := VERSION
version:: incr_vmin rename
version.h:
@echo \#define VERSION \"$(VERSION)\" > version.h; \
echo \#define VERSION_MAJ $(VERSION_MAJ) >> version.h; \
echo \#define VERSION_MIN $(VERSION_MIN) >> version.h
incr: incr_vmin
incr_vmin:
read a b < version; echo > version "$${a:-0} $$(($$b + 1))"
@cat version
incr_vmaj:
read a b < version; echo > version "$$(($$a + 1)) $${b:-0}"
@cat version
rename:
n="$(PROJ)-$(VERSION)"; rm -f ../$(PROJ); \
mv `/bin/pwd` "../$$n" 2> /dev/null; ln -s $$n ../$(PROJ);
bin dist-bin:: $(NAME).hex $(NAME)-ee.hex version.h install.sh
n="$(PROJ)-$(VERSION)"; ln -s . $$n; \
tar zcvf ../$$n-bin.tgz $$n/$(NAME).hex $$n/$(NAME)-ee.hex $$n/install.sh $$n/doc/matrix.txt; \
rm $$n; mv `/bin/pwd` "../$$n" 2> /dev/null; true
dist:: distclean version.h
n="$(PROJ)-$(VERSION)"; \
test -f ../$$n.tgz && (echo "WARNING: ../$$n.tgz exists, press ENTER to overwrite"; read a); \
ln -s . $$n; tar zcvf "../$$n.tgz" $(DIST_EXCLUDE) "$$n/$$n" $$n/*; \
rm $$n; mv `/bin/pwd` "../$$n" 2> /dev/null; true
else
version dist bin dist-bin::; $(MAKE) -C $(TOP_DIR) $@
endif
