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pt100+SHT11测温仿真原理图如下
单片机源程序如下:
#include
#include
#include
#include
#define unchar unsigned char
#define unint unsigned int
#define port P1 //LCD12864的8位数据口
typedef union //定义共同类型
{ unsigned int i; //i表示测量得到的温湿度数据（int 形式保存的数据）
unsigned char c;
float f; //f表示测量得到的温湿度数据（float 形式保存的数据）
} value;
/******************************************12864函数声明******************************************/
void delay_12864(); //延时函数
void check_busy(); //检查是否“忙”
void write_cmd(unchar cmd); //给LCD12864写命令。
void set_page(unchar page); //设置显示的“页”。
void set_line(unchar line); //设置显示的“行”。
void set_column(unchar column); //设置显示的“列”。
void write_data(unchar dat); //写数据。
void set_onoff(unchar onoff); //开关屏幕函数。
void select_screen(unchar screen); //选择屏幕函数。
void clear_screen(unchar screen); //清屏函数。
void initial(); //初始化LCD 12864
void hz_LCDDisp16(unchar page,unchar column, unchar code *hzk,unchar num); //显示函数。
void print_SHT11_temp(); //显示输出SHT11的温度
void print_SHT11_humi(); //显示输出SHT11的湿度
void print_PT100_temp(); //显示输出PT100的温度
void delay(int z); //z为毫秒数延时
/*******************************12864的端口定义、文字库**********************************/
//首先要选择“读，写”是对与谁。以人来说，读是LCD12864来读取人的指令或数据。写是给人写。
sbit rs=P2^0; //rs=1时，为读写数据。rs=0时，为读写指令。
sbit rw=P2^1; //rw=1时，为读数据（指令）。rw=0时，为写数据（指令）。（以人来说。）
sbit en=P2^2; //使能信号。
sbit cs1=P2^3; //片选信号，0时选中左半屏。
sbit cs2=P2^4; //片选信号，0时选中右半屏。
char code hz_wen[]= //温
{
0x10,0x60,0x02,0x8C,0x00,0x00,0xFE,0x92,0x92,0x92,0x92,0x92,0xFE,0x00,0x00,0x00,
0x04,0x04,0x7E,0x01,0x40,0x7E,0x42,0x42,0x7E,0x42,0x7E,0x42,0x42,0x7E,0x40,0x00
}; //度
char code hz_du[]=
{
0x00,0x00,0xFC,0x24,0x24,0x24,0xFC,0x25,0x26,0x24,0xFC,0x24,0x24,0x24,0x04,0x00,
0x40,0x30,0x8F,0x80,0x84,0x4C,0x55,0x25,0x25,0x25,0x55,0x4C,0x80,0x80,0x80,0x00
};
char code hz_shi[]= //湿
{
0x10,0x60,0x02,0x8C,0x00,0xFE,0x92,0x92,0x92,0x92,0x92,0x92,0xFE,0x00,0x00,0x00,
0x04,0x04,0x7E,0x01,0x44,0x48,0x50,0x7F,0x40,0x40,0x7F,0x50,0x48,0x44,0x40,0x00
};
char code maohao[]= //:
{
0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00
};
char code dian[]= //.
{
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00
};
char code wenduhao[]= //℃
{
0x06,0x09,0x09,0xE6,0xF8,0x0C,0x04,0x02,0x02,0x02,0x02,0x02,0x04,0x1E,0x00,0x00,
0x00,0x00,0x00,0x07,0x1F,0x30,0x20,0x40,0x40,0x40,0x40,0x40,0x20,0x10,0x00,0x00
};
char code baifenhao[]= //%
{
0xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00
};
char code fuhao[]= //- 负号
{
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01
};
char code kongbai[]= //空白
{
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
};
char code zero[]= //0
{
0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00
};
char code one[]= //1
{
0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00
};
char code two[]= //2
{
0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00
};
char code there[]= //3
{
0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00
};
char code four[]= //4
{
0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00
};
char code five[]= //5
{
0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00
};
char code six[]= //6
{
0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00
};
char code seven[]= //7
{
0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00
};
char code eight[]= //8
{
0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00
};
char code nine[]= //9
{
0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00
};
/******************************************PCF8591函数声明******************************************/
void delay_6us(); //6us延迟函数
void pcf8591_start(); //启动信号函数
void pcf8591_stop(); //停止信号函数
void pcf8591_ack(); //应答信号函数
void pcf8591_noack(); //非应答信号函数
void pcf8591_write(unchar cmd); //单片机给pcf8591发送指令数据。
char pcf8591_read(); //单片机读取pcf8591发来的数据
void pcf8591_process(); //pcf8591把模拟量转换成数字量并进行显示
/******************************************PCF8591定义**********************************************/
sbit scl_pcf8591=P2^6;
sbit sda_pcf8591=P2^7;
unsigned char pt100_temp[4];
/******************************************SHT11函数声明******************************************/
void sht11_delay(); //SHT11延迟函数
void sht11_start(); //SHT11的启动传输函数
char sht11_read(unchar ack) ; //单片机读取SHT11发来的数据
char sht11_write(unchar cmd); //单片机给SHT11发送指令数据。
void sht11_restart(); //SHT11“通信复位”
char s_measure(unsigned char *p_value, unsigned char mode);//SHT11温湿度测量
void zhuanhuan_sth11(float *p_shidu ,float *p_wendu); //温湿度值转换及修正
void sht11_process(); //SHT11数据处理及显示
/******************************************SHT11定义**********************************************/
#define ACK 0 //结束数据传输；
#define NoACK 1 //继续通信
//地址 命令 读/写
#define ce_liang_wendu 0x03 //000 0001 1
#define ce_liang_shidu
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