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RS485 的代码
main.c
#include
#include
#include
#include "MAX485.h"
#define uchar unsigned char
extern void serial_init(void);
extern uchar RS485();
extern void delay0(uchar);
ex
main.c
#include
#include
#include
#include "MAX485.h"
#define uchar unsigned char
extern void serial_init(void);
extern uchar RS485();
extern void delay0(uchar);
ex
rs485.opt
### uVision2 Project, (C) Keil Software
### Do not modify !
cExt (*.c)
aExt (*.a*; *.src)
oExt (*.obj)
lExt (*.lib)
tExt (*.txt)
pExt (*.plm)
CppX (*.cpp)
DaveTm { 0,0,0,0,0,0,0,0 }
rs485_uv2.bak
### uVision2 Project, (C) Keil Software
### Do not modify !
Target (Target 1), 0x0000 // Tools: 'MCS-51'
Group (Source Group 1)
File 1,1, 0x0
File 1,1,
rs485.c
/****************************************Copyright (c)**************************************************
** 广州周立功单片机发展有限公司
** 研 究
rs485.hex
:0D038F00011E010816000000000000000023
:100220008F1675171F75181E75190E751A05751B13
:100230001F751C1F751D1F7B007A0079167D081223
:0502400001C17F002256
:100245008F1675171F75180C75190E751A18751BED
:10
voltage_level.txt
现在常用的电平标准有TTL、CMOS、LVTTL、LVCMOS、ECL、PECL、LVPECL、RS232、RS485等，还有一些速度比较高的LVDS、GTL、PGTL、CML、HSTL、SSTL等。下面简单介绍一下各自的供电电源、电平标准以及使用注意事项。
TTL：Transistor-Transistor Logic 三极管结构。
Vcc：5V；VOH>=2.4V；VOL