51 Singlechip various interface bus package, using C language, including 51 serial communications, 485 communication, I2C procedures, SPI procedures, 1WIRE procedures package a variety of interfaces can be described as a clean sweep.

第二章
......\2.1异步通信软件模拟
......\...................\iofor232.c
......\...................\iofor232.LST
......\...................\iofor232.OBJ
......\...................\iofor232.Opt
......\...................\iofor232.plg
......\...................\iofor232.Uv2
......\...................\iofor232_Uv2.Bak
......\2.2基于RS-232的串口通信
......\.......................\RS232.c
......\.......................\VB程序.txt
......\2.3基于RS-485的多机通信
......\.......................\master.lnp
......\.......................\master.M51
......\.......................\master.Opt
......\.......................\master.plg
......\.......................\master.Uv2
......\.......................\master485.c
......\.......................\master485.LST
......\.......................\master485.OBJ
......\.......................\master_Opt.Bak
......\.......................\master_Uv2.Bak
......\.......................\slave.c
......\.......................\slave.LST
......\.......................\slave.OBJ
......\2.4 I2C总线协议的软件实现
......\.........................\viic.c
......\.........................\viic.LST
......\.........................\viic.OBJ
......\.........................\viic.Opt
......\.........................\viic.plg
......\.........................\viic.Uv2
......\.........................\viic_Opt.Bak
......\.........................\viic_Uv2.Bak
......\2.5 SPI总线在单片机系统中的实现
......\...............................\SPI
......\...............................\SPI.ASM
......\...............................\SPI.c
......\...............................\SPI.lnp
......\...............................\SPI.LST
......\...............................\SPI.M51
......\...............................\SPI.OBJ
......\...............................\SPI.Opt
......\...............................\SPI.plg
......\...............................\SPI.tmp
......\...............................\SPI.Uv2
......\...............................\SPI_Opt.Bak
......\...............................\SPI_Uv2.Bak
......\2.61-wire
......\.........\1-wire.c
......\.........\1-wire.LST
......\.........\1-wire.OBJ
......\.........\1-wire.Opt
......\.........\1-wire.plg
......\.........\1-wire.Uv2
......\.........\1-wire_Opt.Bak
......\.........\1-wire_Uv2.Bak

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