串口通信 ........\STARTUP.A51 ........\STARTUP.LST ........\STARTUP.OBJ ........\test ........\test.LST ........\test.M51 ........\test.OBJ ........\test.c ........\test.hex ........\test.lnp ........\test.plg ........\test.uvopt ........\test.uvproj ........\test_uvopt.bak ........\test_uvproj.bak