Add make target for .bob3 file for Bobdude

Makefile

@@ -34,8 +34,25 @@ OBJS := $(patsubst %.cpp, %.o, $(patsubst %.c, %.o, $(C_FILES)))
 %.program: %.hex
 	$(AVRDUDE) -p $(MCU) -c $(PGM_TYPE) -P $(PGM_DEV) -U flash:w:$<:i
 
+.ONESHELL:
+%.bob3: %.hex
+	cat >$@ <<-__EOF__
+	<?xml version="1.0"?>
+	<xhex version="1.0">
+	<platform>bob3-m88-8</platform>
+	<programmer type="avrispv2"/>
+	<device part="atmega88" erase="yes">
+	<segment id="flash" format="ihex">
+	__EOF__
+	cat $< >>$@
+	cat >>$@ <<-__EOF__
+	</segment>
+	</device>
+	</xhex>
+	__EOF__
+
 clean:
-	rm -f $(OBJS) *.o *.elf *.hex
+	rm -f $(OBJS) *.o *.elf *.hex *.bob3
 
 .PRECIOUS: %.hex
 .PHONY: clean