## for rebuilding usbdrone.hex ###########################################################
-build/slipway_drone.hex: src/edu/berkeley/slipway/slipway_drone.c upstream/avr-libc/.built
+build/slipway_drone.hex: src/edu/berkeley/slipway/FtdiBoardSlave.c upstream/avr-libc/.built
upstream/prefix/bin/avr-gcc -O3 -mmcu=at94k $< -o $@.o
upstream/prefix/bin/avr-objcopy -O ihex $@.o $@