add i2c lib by Peter Fleury

makefile

@@ -1,5 +1,5 @@
 TARGET  = main
-FILES   = main modbus buffer pid
+FILES   = main modbus buffer pid twimaster adc
 MCU     = atmega328p
 PROGC	= m328p
 CC      = avr-gcc
@@ -8,8 +8,8 @@ TOOL    = atmelice_isp
 BUILDDIR = build
 
 DEFINES = -DF_CPU=18432000UL
- 
-CFLAGS  =-mmcu=$(MCU) -O2 -Wall $(DEFINES) -I. -std=c99 -ffunction-sections -fdata-sections
+
+CFLAGS  =-mmcu=$(MCU) -g -O2 -Wall $(DEFINES) -I. -std=c99 -ffunction-sections -fdata-sections
 LDFLAGS =-mmcu=$(MCU) -Wl,--gc-sections
 
 LDFILES = $(foreach FILE,$(FILES),$(BUILDDIR)/$(FILE).o)
@@ -25,19 +25,17 @@ $(BUILDDIR)/$(TARGET).elf: $(LDFILES)
 	$(CC) $(LDFLAGS) $(LDFILES) -o $(BUILDDIR)/$(TARGET).elf
 
 $(BUILDDIR)/$(TARGET).hex : $(BUILDDIR)/$(TARGET).elf
-	 avr-objcopy -j .data -j .text -O ihex $< $@
+	avr-objcopy -j .data -j .text -O ihex $< $@
 
-fuse: 
-	avrdude -p $(PROGC) -c $(TOOL) -U lfuse:w:0xE8:m -U hfuse:w:0xD1:m
+.PHONY=load program size clean
 
 load: $(BUILDDIR)/$(TARGET).hex
-	avrdude -p $(PROGC) -c $(TOOL) -U flash:w:$(BUILDDIR)/$(TARGET).hex -v -B 2
+	avrdude -p $(PROGC) -c $(TOOL) -U flash:w:$(BUILDDIR)/$(TARGET).hex -v -B 4MHz
 
 program: clean load
-	
+
 size: $(BUILDDIR)/$(TARGET).elf
 	avr-size -C --mcu=$(MCU) $(BUILDDIR)/$(TARGET).elf
 
-.PHONY=clean
 clean:
 	rm -rf $(BUILDDIR)