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个人感觉是定时器2配置问题 ,没有计时发送
#include "reg51.h"
#include "intrins.h"
#define FOSC 11059200UL
#define BRT (65536 - FOSC / 9600 / 4)
sfr T4T3M = 0xd1;
sfr T4H = 0xd2;
sfr T4L = 0xd3;
sfr T3H = 0xd4;
sfr T3L = 0xd5;
sfr S3CON = 0xac;
sfr S3BUF = 0xad;
//sfr IE2 = 0xaf;
sfr P_SW2 = 0xba;
sfr P0M0 = 0x94;
sfr P0M1 = 0x93;
sfr P1M0 = 0x92;
sfr P1M1 = 0x91;
sfr P3M0 = 0xb2;
sfr P3M1 = 0xb1;
//定时器初始化
sfr T2L = 0xd7;
sfr T2H = 0xd6;
sfr AUXR = 0x8e;
sfr IE2 = 0xaf;
#define ET2 0x04
sfr AUXINTIF = 0xef;
#define T2IF 0x01
#define uchar unsigned char
#define uint unsigned int
sbit CON=P2^7;
uchar buffer[2]={0X9B,0X3B};
uchar timing=0;
uchar fs=0,js=0;
void TM2_Isr() interrupt 12
{
T2L = (65536-11059200/1000); //1ms中断
T2H = (65536-11059200/1000) >> 8;
timing++;
if(timing==300)
{
js=1;
timing==0;
}
}
void Uart3Isr() interrupt 17
{
if (S3CON & 0x02)
{
S3CON &= ~0x02;
}
if (S3CON & 0x01)
{
S3CON &= ~0x01;
CON=0;
buffer[0] = S3BUF;
js=0;
fs=1;
CON=1;
}
}
void main()
{
P0M0=0x00;
P0M1=0x00;
P1M0=0x00;
P1M1=0x00;
CON=1;
P_SW2 = 0x00;
S3CON = 0x50;
T3L = BRT;
T3H = BRT >> 8;
T4T3M = 0x0a;
IE2 = 0x08;
EA = 1;
//定时器2
T2L = 0xff;
T2H = 0xff;
AUXR = 0x18; //设置外部计数模式并启动定时器
IE2 = ET2;
while (1)
{
if(fs==1)
{
CON=0;
S3BUF=buffer[1];
CON=1;
}
}
}
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