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RS485 的代码
main.c
/*************************************************
程序功能：通过RS485端口接收字符并在1602液晶上显示
--------------------------------------------------
测试方法：用另一个RS485发射器，通过RS485总线向学习板
发送数据（必须是可显示字符对应的ASCII码
rs485.c
/*
* (C) Copyright 2003
* Martin Krause, TQ-Systems GmbH,
*
* Based on cpu/arm920t/serial.c, by Gary Jennejohn
* (C) Copyright 2002 Gary Jennejohn, DENX Software Engineerin
rs485.h
/*
* (C) Copyright 2003
* Martin Krause, TQ-Systems GmbH,
*
* Based on cpu/arm920t/serial.c, by Gary Jennejohn
* (C) Copyright 2002 Gary Jennejohn, DENX Software Engineerin
tongx3.c
/*********************************************************************
文件名: tongx3.c
功 能：AT89C52与N台AT89C2051通讯（这里N取64），双方均有RS485接口，
AT89C52用T2作波特率发生器, 波特率为9600，配套AT89C2051
程序为EYE124.C
*********
tongxun5.c
/*********************************************************************
*这是在AT89C2051单片机上运行的程序,文件名为tongxun5.c
*功能：与组态王通讯的51模块，AT89C2051作为分站与上位机（PC机或工控机）通
* 讯，双方均有RS485接口 ，用T1作波特率发生器, 波特率为9600，
rs485.dni
[Breakpoints]
Count=0
[Interrupts]
Enabled=1
[MemoryMap]
Enabled=0
rs485.fmt
[struct types]
Count=_ 0
[watch formats]
Count=_ 0
通讯.ini
[Desktop-Workspace]
Wnd0=_ "Workspace" "open" 44 2 3 -1 -1 -4 -23 22 22 664 356 1 276 27 27 4 "RS232" "RS232_A" "RS485" "RS485_A" 4 "RS232_A/Debug" "RS485/Debug" "RS485_A/Debug" "RS232/Debug" "/R
exp8.ini
[Desktop-Workspace]
Wnd0=_ "Workspace" "open" 44 0 1 -1 -1 -1 -1 93 68 735 402 3 276 27 27 6 "RS232" "RS232_A" "RS232_A/232_a.s43" "RS485" "RS485/main_485.c" "RS485_A" 4 "RS485_A/Debug" "RS232_A/Debu
rs485.dni
[Breakpoints]
Count=0
[Interrupts]
Enabled=1
[MemoryMap]
Enabled=0