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Hyperterminal-深圳鼎紀(jì)PCB

來源：鼎紀(jì)電子PCB 發(fā)布日期 2017-03-31 瀏覽：

????????????????????????????????????????? Full duplex ??????????????????????????????????? ?????????? TXD ??????????? RXD ???????? ????????????????????????????????????????? driver/receiver ?????????? RXD/TXD ????????????????????????????????????? ????????????????????????????? ??????????????? driver/receiver ??????????????????????? MCS-51 ??????????????? RS-232 ??????????????????????????? MAX232

??????????? RS-232 ????????????????????????????????? 50 ??? ???? 15 ????

????????????????????????????????????????????? RS-485/RS-422 ??? driver/receiver ????????? 75176

??????????? RS-485/RS-422 ????????????????????????????????? 4000 ??? ???? 1200 ????

????????????????????????????? RS-232 ?????????????????????????????????????????

Hyperterminal-深圳鼎紀(jì)PCB

null

?????? 1 ????????????????????

???????????????????????????? serial port UART ??????????????????????????????????????? windows ?????????????? HyperTerminal ???????????????????????? ???????? Start–>All Programs–>Accessories–>Communication–>Hyperterminal ???????????????? 2-4

Hyperterminal-深圳鼎紀(jì)PCB

?????? 2

Hyperterminal-深圳鼎紀(jì)PCB

?????? 3

Hyperterminal-深圳鼎紀(jì)PCB

?????? 4

????? Reset MCS-51 ???? Reset ?????????????????????????????? ?????????????????????? 5 ?????????????????????? ??????? “Aon.” ???? Enter ????????????????????? 5

Hyperterminal-深圳鼎紀(jì)PCB

?????? 5

????????????????????? printf ??????????????? printf ???????????????????????? 1K byte ?????????????? copy string ???????? Txbuff ???

//************************************************************************//
//Project : LAB3
//Description : Serial UART interrupt
//Device : 89S52
//XTAL : 11.0592 MHz
//By : ThaiEmbedded 2007
//************************************************************************//
#include <reg52.h>
#include <absacc.h>
#include <intrins.h>
#include <string.h>#define CR 0x0d
#define LF 0x0a

bit TX_OK,RX_OK;
unsigned char Txbuff[40];
unsigned char Rxbuff[20];
unsigned char Txn;
unsigned char Txcnt,Rxcnt;

//————————————————————————//
// Serial interrupt service routine
//————————————————————————//
void serial_isr() interrupt 4
{
if(TI)
{
TI=0;
if(Txcnt<Txn)
SBUF=Txbuff[Txcnt++];
else
TX_OK = 1;
}

if(RI)
{
RI=0;
if((!RX_OK)&&(Rxcnt<19))
{
Rxbuff[Rxcnt]=SBUF;
if(Rxbuff[Rxcnt]==0x0d)
RX_OK = 1;
Rxcnt++;
}
}

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Hyperterminal-深圳鼎紀(jì)PCB

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Hyperterminal-深圳鼎紀(jì)PCB

來源：鼎紀(jì)電子PCB 發(fā)布日期 2017-03-31 瀏覽：

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最新資訊

全國服務(wù)熱線0755-27586790

15年專注制作PCB板廠家我們一直在堅持品質(zhì) 服務(wù)和價格的平衡點(diǎn)