From: Kevin Rosenberg <kevin@rosenberg.net>
Date: Sat, 29 Mar 2008 00:21:39 +0000 (-0600)
Subject: add makefile to repository; add -Wl,-relax to linker flags
X-Git-Url: http://git.kpe.io/?p=avr_bc100.git;a=commitdiff_plain;h=e69ce471b5201b021291e8a406d371fc451a2ace

add makefile to repository; add -Wl,-relax to linker flags
---

diff --git a/BaseTinyFirmware/GCC/ChangeLog b/BaseTinyFirmware/GCC/ChangeLog
index f36d807..07131e9 100644
--- a/BaseTinyFirmware/GCC/ChangeLog
+++ b/BaseTinyFirmware/GCC/ChangeLog
@@ -1,19 +1,25 @@
+2008-03-12 Kevin Rosenberg <kevin@rosenberg.net>
+	* BaseTinyFirmware/GCC/avr463/Makefile: Added -Wl,-relax to linker
+	flags. On my system this crashes avr-ld.exe, but others have reported
+	a large reduction in firmware size with this option. I added this
+	option for others to try.
+	
 2008-03-14 Martin Thomas <mthomas@rhrk.uni-kl.de>
-	* added "volatile" to structure object and array declarations for objects
-	sed in main-thread and ISRs. I'm not sure about the current state of
-	implicitly "guaranteed" accesses in (avr-)gcc but it should be a "better
-	safe than sorry" extension.
-	* enveloped access to timer-values in timer.c to make them "atomic" since
-	they are unsigned long
+	* added "volatile" to structure object and array declarations for
+	objects sed in main-thread and ISRs. I'm not sure about the
+	current state of implicitly "guaranteed" accesses in (avr-)gcc but
+	it should be a "better safe than sorry" extension.
+	* enveloped access to timer-values in timer.c to make them
+	"atomic" since they are unsigned long
 	* "atomic" access to singned int and unsigned int members of ADCS
-	* it maybe better to have one place to globally enable interrupts ("sei").
-	Done in "initialize" now and not several times in the driver
-	init-functions.
+	* it maybe better to have one place to globally enable
+	interrupts ("sei").  Done in "initialize" now and not several
+	times in the driver init-functions.
 	* changed some space to tab as in the original code
 	* added header files to the AVR-Studio project workspace
-	* added -lm to the linker-options in the AVR Studio gcc-plugin, not
-	important for the basic application but might be good if someone uses the
-	code as a base for own developments
+	* added -lm to the linker-options in the AVR Studio gcc-plugin,
+	not important for the basic application but might be good if
+	someone uses the ode as a base for own developments
 
 2008-03-12 Kevin Rosenberg <kevin@rosenberg.net>
 	* Initial GCC port performed and compiles without error
diff --git a/BaseTinyFirmware/GCC/avr463/Makefile b/BaseTinyFirmware/GCC/avr463/Makefile
new file mode 100644
index 0000000..44c49e4
--- /dev/null
+++ b/BaseTinyFirmware/GCC/avr463/Makefile
@@ -0,0 +1,108 @@
+###############################################################################
+# Makefile for the project avr463
+###############################################################################
+
+## General Flags
+PROJECT = avr463
+MCU = attiny861
+TARGET = avr463.elf
+CC = avr-gcc.exe
+
+## Options common to compile, link and assembly rules
+COMMON = -mmcu=$(MCU)
+
+## Compile options common for all C compilation units.
+CFLAGS = $(COMMON)
+CFLAGS += -Wall -gdwarf-2 -std=gnu99 -Os -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -DNIMH
+CFLAGS += -MD -MP -MT $(*F).o -MF dep/$(@F).d 
+
+## Assembly specific flags
+ASMFLAGS = $(COMMON)
+ASMFLAGS += $(CFLAGS)
+ASMFLAGS += -x assembler-with-cpp -Wa,-gdwarf2
+
+## Linker flags
+LDFLAGS = $(COMMON)
+LDFLAGS +=  -Wl,-Map=avr463.map -Wl,-relax
+
+
+## Intel Hex file production flags
+HEX_FLASH_FLAGS = -R .eeprom
+
+HEX_EEPROM_FLAGS = -j .eeprom
+HEX_EEPROM_FLAGS += --set-section-flags=.eeprom="alloc,load"
+HEX_EEPROM_FLAGS += --change-section-lma .eeprom=0 --no-change-warnings
+
+
+## Libraries
+LIBS = -lm 
+
+## Objects that must be built in order to link
+OBJECTS = ADC.o battery.o chargefunc.o main.o menu.o NIMHcharge.o OWI.o PWM.o statefunc.o time.o USI.o 
+
+## Objects explicitly added by the user
+LINKONLYOBJECTS = 
+
+## Build
+all: $(TARGET) avr463.hex avr463.eep avr463.lss size
+
+## Compile
+ADC.o: ../ADC.c
+	$(CC) $(INCLUDES) $(CFLAGS) -c  $<
+
+battery.o: ../battery.c
+	$(CC) $(INCLUDES) $(CFLAGS) -c  $<
+
+chargefunc.o: ../chargefunc.c
+	$(CC) $(INCLUDES) $(CFLAGS) -c  $<
+
+main.o: ../main.c
+	$(CC) $(INCLUDES) $(CFLAGS) -c  $<
+
+menu.o: ../menu.c
+	$(CC) $(INCLUDES) $(CFLAGS) -c  $<
+
+NIMHcharge.o: ../NIMHcharge.c
+	$(CC) $(INCLUDES) $(CFLAGS) -c  $<
+
+OWI.o: ../OWI.c
+	$(CC) $(INCLUDES) $(CFLAGS) -c  $<
+
+PWM.o: ../PWM.c
+	$(CC) $(INCLUDES) $(CFLAGS) -c  $<
+
+statefunc.o: ../statefunc.c
+	$(CC) $(INCLUDES) $(CFLAGS) -c  $<
+
+time.o: ../time.c
+	$(CC) $(INCLUDES) $(CFLAGS) -c  $<
+
+USI.o: ../USI.c
+	$(CC) $(INCLUDES) $(CFLAGS) -c  $<
+
+##Link
+$(TARGET): $(OBJECTS)
+	 $(CC) $(LDFLAGS) $(OBJECTS) $(LINKONLYOBJECTS) $(LIBDIRS) $(LIBS) -o $(TARGET)
+
+%.hex: $(TARGET)
+	avr-objcopy -O ihex $(HEX_FLASH_FLAGS)  $< $@
+
+%.eep: $(TARGET)
+	-avr-objcopy $(HEX_EEPROM_FLAGS) -O ihex $< $@ || exit 0
+
+%.lss: $(TARGET)
+	avr-objdump -h -S $< > $@
+
+size: ${TARGET}
+	@echo
+	@avr-size -C --mcu=${MCU} ${TARGET}
+
+## Clean target
+.PHONY: clean
+clean:
+	-rm -rf $(OBJECTS) avr463.elf dep avr463.hex avr463.eep avr463.lss avr463.map
+
+
+## Other dependencies
+-include $(shell mkdir dep 2>/dev/null) $(wildcard dep/*)
+