I have already passed the actual test to improve the ultrasonic ranging program on the basis of other people's mistakes, and I hope it will be helpful to you

Packet : 25811234ultrasonic.rar filelist
超声波测距及报警程序\Last Loaded ultrasonic.DBK
超声波测距及报警程序\Last Loaded 超声波模拟.DBK
超声波测距及报警程序\Lcd1602.h
超声波测距及报警程序\main.c
超声波测距及报警程序\main.LST
超声波测距及报警程序\main.OBJ
超声波测距及报警程序\STARTUP.A51
超声波测距及报警程序\STARTUP.LST
超声波测距及报警程序\STARTUP.OBJ
超声波测距及报警程序\ultrasonic.DSN
超声波测距及报警程序\ultrasonic.PWI
超声波测距及报警程序\超声波-1602.PWI
超声波测距及报警程序\超声波-C
超声波测距及报警程序\超声波-C.hex
超声波测距及报警程序\超声波-C.lnp
超声波测距及报警程序\超声波-C.M51
超声波测距及报警程序\超声波-C.Opt
超声波测距及报警程序\超声波-C.plg
超声波测距及报警程序\超声波-C.Uv2
超声波测距及报警程序\超声波-C_Opt.Bak
超声波测距及报警程序\超声波-C_Uv2.Bak
超声波测距及报警程序\超声波模拟.PWI
超声波测距及报警程序

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