File list (Check if you may need any files):
测试串口\key2.c
........\key2.lnp
........\key2.M51
........\key2.opt.bak
........\key2.plg
........\key2.Uv2.bak
........\key2_Opt.Bak
........\key2_Uv2.Bak
........\key2_uvopt.bak
........\key2_uvproj.bak
........\REG936.H
........\REG938.H
........\START900.A51
........\START900.LST
........\key2.uvgui_Administrator.bak
........\key2.uvgui.Administrator
........\key2.__b
........\key2.LIB
........\key2.hex
........\key2.uvproj
........\START900.OBJ
........\key2.LST
........\key2.OBJ
........\key2
........\key2.uvopt
........\新建文件夹
测试串口