Some progress on i2c control.

Makefile

@@ -2,15 +2,16 @@
 
 NAME=quad
 
-OBJS=crt0.o main.o
+SSRCS=crt0.s
+CSRCS=main.c i2c.c
 
-CFLAGS=-march=armv4t -msoft-float
+CFLAGS=-march=armv4t -msoft-float -O1
 
 LDSCRIPT=lpc2103_flash.ld
 CC=arm-elf-gcc
 OBJCOPY=arm-elf-objcopy
 
-CLEANOBJS=$(OBJS) $(NAME).hex $(NAME).elf $(NAME).bin $(NAME).map
+CLEANOBJS=$(OBJS) $(NAME).hex $(NAME).elf $(NAME).bin $(NAME).map .depend
 
 all: $(NAME).bin
 
@@ -18,6 +19,9 @@ all: $(NAME).bin
 # In theory, nothing below here needs touching for as long as all of the
 # sources are in a single directory.
 
+COBJS=$(CSRCS:.c=.o)
+SOBJS=$(SSRCS:.s=.o)
+OBJS=$(SOBJS) $(COBJS)
 
 .SUFFIXES: .elf .hex .bin
 
@@ -36,3 +40,7 @@ run: $(NAME).hex
 clean:
 	rm -rf $(CLEANOBJS)
 
+depend:
+	$(CC) -MM $(CFLAGS) -nostdlib -nostartfiles $(CSRCS) >.depend
+
+.sinclude ".depend"