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#include <reg52.h>
#include <stdio.h>
#include "lcd1602.h"
//ADC0809
sbit CLK=P3^4;
sbit ST=P3^5;
sbit EOC=P3^6;
sbit OE=P3^7;
sbit RELAY = P3^3;
unsigned int pass = 0;
unsigned int ADCshow;
unsigned char pressure = 50;
unsigned char mode=0;
unsigned char status = 0;
void delay(unsigned int s)
{
while(s--);
}
void DelayMS(unsigned int ms)
{
unsigned char i;
while(ms--)
{
for(i=0;i<120;i++);
}
}
void Timer0_INT() interrupt 1
{
TH0=(65536-200)/256;
TL0=(65536-200)%256;
CLK=~CLK;
}
void UART_init() //設置串行通信 本晶振為11.0592MHZ，其他的就自己算一下應該設置多少
{
TMOD = 0x20;
TH1 = 0xfd;
TL1 = 0xfd; //波特率9600
SM0 = 0;
SM1 = 1; // 串口工作方式1 10位異步
REN = 1; //串口允許接收
TR1 = 1;
EA = 1;
ES =1 ; //串口中斷
}
void main(void)
{
RELAY=1; //關燈
UART_init();
lcd_init(); //初始化1602
TMOD=0x01; //設置定時器0
TH0=(65536-200)/256; //初值重裝
TL0=(65536-200)%256;
EA=1; //開總中斷
ET0=1; //開定時器中斷
TR0=1; //開定時器0
while(1)
{
//adc0809讀取數據
ST=0;
OE=0;
ST=1;
ST=0;
while(EOC==0);
OE=1;
ADCshow=P1;
OE=0;
//lcd1602顯示壓力傳感器值
LCD_ShowStr(0,0,"Real:");
LCD_ShowChar(5,0,ADCshow/100+'0');
LCD_ShowChar(6,0,ADCshow%100/10 +'0');
LCD_ShowChar(7,0,ADCshow%10 +'0');
if(ADCshow<pressure||pass==0x11)
{
RELAY=0; //亮燈
}
else
{ //否則
RELAY=1; //滅燈
}
}
}
void UART_INTERRUPT() interrupt 4
{
pass = SBUF;
RI = 0;
SBUF = pass; ）
while(!TI);
TI = 0;
}
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