main.c

PIC16F886实物通过测试的AD转换代码+proteus仿真文件！

#include<pic.h>
#define uchar unsigned char
#define uint unsigned int
#define  rs RB0
#define rw RB1
#define en RB2
#define busy RC7
#define BUSYI TRISC7=1
#define BUSYO TRISC7=0
#define DATA PORTC
uchar flag,temp,sum,i,t1,m1,m2,f1,f2,s1,s2;
uint v;
const uchar tab1[]="Sensor is mar!";
const uchar tab2[]="100";
uchar tab[]="V:    V  M:  %RH";
uchar tab3[]="TIME: 0000-00-00";

void delay(uchar i)
{
	uchar j;
	for(;i>0;i--)
		for(j=10;j>0;j++);
}

void ad_init()//ad转换IO寄存器设置
{
	TRISA|=0x01;
	ANSEL|=0x01;
	ADCON0=0x41;//Fosc/8,ADON,AN0
	ADCON1=0x00;//结果左对齐，参考电压为VDD,VSS
	GIE=1;
	PEIE=1;
	ADIE=1;
	ADIF=0;
	delay(1);
	GODONE=1;	
}


/******************************/
/*									*/
/*	测忙函数，返回1测忙成功，返回0失败*/
/*									*/
/*									*/
/******************************/

uchar chkbusy()
{
	uchar  b=0,i;

	 for(i=50;i>0;i--)
	{
		DATA=0xff;   //判断液晶显示器是否忙的子程序
	       BUSYI;
	       rs=0;
	       rw=1;
	       en=0;
	       NOP();
	       en=1; 
		busy=busy;
		if(busy==0)
		{
			b=1;
			break;
		}
	}
	BUSYO;
	return b;
}

/******************************/
/*									*/
/*	 写指令函数，返回1成功，返回0失败 */
/*									*/
/*									*/
/******************************/

uchar write_com(uchar com)
{
	uchar b=0;
	if(chkbusy())
	{
		DATA=com;
		rs=0;
		rw=0;
		en=1;
		NOP();
		en=0;
		b=1;
	}	
	
	return b;

}

uchar write_dat(uchar dat)
{
	uchar b=0;
	if(chkbusy())
	{
		DATA=dat;
		rs=1;
		rw=0;
		en=1;
		NOP();
		en=0;	
		b=1;	
	}	

	return b;
}

void lcd_init()//1602端口设置，初始化设置以及显示框架字符
{
	uchar n;
	TRISC=0x00;
	PORTC=0x00;
	TRISB&=0xf8;
	ANSELH=0x00;
	en=0;
	write_com(0x38);
	write_com(0x0c);
	write_com(0x06);
	write_com(0x01);
	write_com(0x80);
}


uchar  num_change(uchar tep)//计算电压，湿度值
{	
	float  y,yy;
	uchar tt;
	y=(float)(tep)/51;
	yy=y;
	v=(uint)(100*yy);
	tt=(uchar)((y-0.8)/0.031);
	return tt;
}

void write_m(uchar num,uchar location)//写1602湿度值
{
	uchar t1,t2,j;
	if((num>100)&&(num<0))
	{
		write_com(0x01);
		write_com(location);
		for(j=0;j<14;j++)
		{
			write_dat(tab1[j]);
			delay(1);
		}
		
	}
	else if(num==100)
	{
		write_com(location);
		for(j=0;j<3;j++)
		{
			write_dat(tab2[j]);
			delay(1);
		}
	}
	else
	{
		t1=num/10;
		t2=num%10;
		write_com(location);
		write_dat(t1+0x30);
		delay(1);
		write_dat(t2+0x30);
		delay(1);
	}
}

void write_v(uint x,uchar com)//写1602电压值
{
	uchar x1,x2,x3;
	x1=(uchar)(x/100);
	x2=(uchar)((x-x1*100)/10);
	x3=(uchar)(x%10);
	write_com(com);
	write_dat(x1+0x30);
	write_dat(0x2e);
	write_dat(x2+0x30);
	write_dat(x3+0x30);
}

void write_dats(uchar location,uchar num,uchar *p)
{
	uchar ii,tp;						//在任意位置，写任意字符
	write_com(location);
	while(ii!=num)
	{
		tp=*p;
		write_dat(tp);
		p++;
		ii++;
	}
	ii=0;
}

void write(uchar com,uchar dat)
{
	write_com(com);
	write_dat(dat);
}

void tmr1_init()//定时器1初始化
{
	GIE=1;
	PEIE=1;
	TMR1IE=1;
	TMR1IF=0;
	T1CON=0x30;
	TMR1L=0xd5;//定时0.5s
	TMR1H=0x0b;
	TMR1ON=1;
	
}

void interrupt ad_int()//中断程序
{
	if(ADIF==1)
	{
		ADIF=0;
	}
	
	if(TMR1IF==1)
	{
		TMR1L=0xd5;
		TMR1H=0x0b;
		TMR1IF=0;
		t1++;
		if(t1==2)
		{
			t1=0;
			flag=1;
			m1++;
			if(m1==10)
			{
				m1=0;
				m2++;
				if(m2==6)
				{
					m2=0;
					f1++;
					if(f1==10)
					{
						f1=0;
						f2++;
						if(f2==6)
						{
							s1++;
							if(s1==10)
							{
								s2++;
							}
						}
					}
				}
			}
		}
	}
}

void save_time()//保存时间
{
	eeprom_write(0x00,s2);
	eeprom_write(0x01,s1);
	eeprom_write(0x02,f2);
	eeprom_write(0x03,f1);
	eeprom_write(0x04,m2);
	eeprom_write(0x05,m1);
}

void read_time()//读取时间
{
	s2=eeprom_read(0x00);
	s1=eeprom_read(0x01);
	f2=eeprom_read(0x02);
	f1=eeprom_read(0x03);
	m2=eeprom_read(0x04);
	m1=eeprom_read(0x05);
	if(s2>9)
	{
		s2=0;
	}	
	if(s1>9)
	{
		s1=0;
	}
	if(f2>9)
	f2=0;
	if(f1>9)
	f1=0;
	if(m2>9)
	m2=0;
	if(m1>9)
	m1=0;
}

void show_time()//显示时间
{
	write(0xc8,s2+0x30);
	write(0xc9,s1+0x30);
	write(0xcb,f2+0x30);
	write(0xcc,f1+0x30);
	write(0xce,m2+0x30);
	write(0xcf,m1+0x30);
}

void disp_init()//显示框架
{
	write_dats(0x80,16,tab);
	write_dats(0xc0,16,tab3);
	show_time();
}

void main()
{
	read_time();
	lcd_init();
	disp_init();
	ad_init();
	tmr1_init();
	while(1)
	{
		if(flag==1)
		{
			flag=0;
			temp=ADRESH;
			sum=num_change(temp);
			GODONE=1;
			
			write_v(v,0x82);
			write_m(sum,0x8b);
			
			show_time();
			save_time();
		}
		
	}
}