基于STC15F104W下的温湿度显示（DHT11）（OLED）
设计名称：基于DHT11的温湿度计
显示：采用OLED12864显示温度和湿度
测量，采用DHT11模块
Hygrothermograph.c
#include
#include "intrins.h"
#include "OLED_Contrul_Hygrothermograph.c"//OLED控制函数
sbit Y_LED=P3^1;
sbit R_LED=P3^0;
sbit DHT=P3^5;//DHT11模块
unsigned int Temperature[3]={1,1,1};
unsigned int Humidity[2]={1,1};
unsigned char Data_Receive[5];
void Delay30us()//@12.000MHz
{
unsigned char i;
i=87;
while(--i);
}
void Delay20ms()//@12.000MHz
{
unsigned char i,j,k;
i=1;
j=234;
k=113;
do
{
do
{
while(--k);
}while(--j);
}while(--i);
}
void Delay1s()//@12.000MHz
{
unsigned char i,j,k;
i=46;
j=153;
k=245;
do
{
do
{
while(--k);
}while(--j);
}while(--i);
}
void OLED_Display()//OLED显示驱动函数
{
OLED_DataDisplay_T(56,4,Temperature);//显示温度
OLED_DataDisplay_H(56,6,Humidity);//显示湿度
}
void DHT_Collect()//温度采集
{
unsigned char i,j;
unsigned char t;
unsigned char dat8=0;//一次读取的8位数据，需要读5次
unsigned int CheckValue=0;//校验和
DHT=0;//主机发起始信号
Delay20ms();//主机拉低总线至少18ms
DHT=1;//主机拉高总线20~40us
Delay30us();
t=80;//设置超时等待时间
while(DHT&&t--);//等待DHT11拉低总线
if(t==0)//超时
{
DHT=1;
}
t=250;//设置超时等待时间
while(!DHT&&t--);//等待DHT11拉高总线
if(t==0)//超时
{
DHT=1;
}
t=250;//设置超时等待时间
while(DHT&&t--);//等待DHT11拉低总线
if(t==0)//超时
{
DHT=1;
}
for(j=0;j<5;j++)//5次读取
{
for(i=0;i<8;i++)//1次8个位
{
//等待50us开始时隙
t=150;//设置超时等待时间
while(!DHT&&t--);//等待DHT11拉高总线
if(t==0)//超时
{
DHT=1;
}
t=0;//记录时间清零
while(DHT&&++t);//等待并记录高电平持续时间
dat8<<=1;
if(t>30)//高电平持续时间较长(70us)
dat8+=1;//传输值为1
}
Data_Receive[j]=dat8;
}
Delay30us();//等待DHT11拉低50us
Delay30us();
DHT=1;
for(i=0;i<4;i++)
{
CheckValue+=Data_Receive[i];//计算校验值
}
if((unsigned char)CheckValue==Data_Receive[4])//比对
{
Temperature[0]=Data_Receive[2]/10;
Temperature[1]=Data_Receive[2]%10;
Temperature[2]=Data_Receive[3]%10;
Humidity[0]=Data_Receive[0]/10;
Humidity[1]=Data_Receive[0]%10;
}
}
void sys_init() //系统初始化函数
{
Y_LED=1;
R_LED=1;
OLED_Init(); //OLED初始化
OLED_CLS(); //清屏
OLED_FormTitle(0,0); //显示标题文字Linyar Lab.
OLED_FormName(0,2); //显示Hygrothermograph名称
OLED_FormLine(0,3); //显示一条横线
OLED_FormTemp(8,4); //显示温度文字
OLED_FormHumi(16,6); //显示湿度文字
OLED_AnyChar_16X16(96,4,TempChar); //显示摄氏度℃字符
OLED_AnyChar_8X16(88,6,HumiChar); //显示百分号%字符
OLED_AnyChar_8X16(72,4,PointChar); //显示冒号:字符
}
void main()
{
sys_init();
while(1)
{
DHT_Collect(); //DHT11数据采集
Y_LED=1;R_LED=0; //灯状态转换
OLED_Display(); //OLED显示函数
R_LED=1;Y_LED=0; //灯状态转换
Delay1s();
Delay1s();
}
}
OLED_Contrul_Hygrothermograph.c
#include "STC15.H"
#include "codetab_Hygrothermograph.h"//OLED字库
#include "OLED_Hygrothermograph.h"//OLED基本驱动函数
void OLED_FormName(unsigned char x, y)//在指定位置显示HFont字符组
{
unsigned char i=0,j=0;
for(j=0;j<17;j++)
{
OLED_Set_Pos(x,y);
for(i=0;i<6;i++)
OLED_WrDat(HFont[i+j*6]);
x+=6;
}
}
void OLED_FormLine(unsigned char x, y)//在指定位置显示HFont字符组
{
unsigned char i=0,j=0;
for(j=0;j<18;j++)
{
OLED_Set_Pos(x,y);
for(i=0;i<6;i++)
OLED_WrDat(LineFont[i]);
x+=6;
}
}
void OLED_FormTitle(unsigned char x,y)//主标题
{
unsigned char i=0,j=0;
for(j=0;j<13;j++)
{
OLED_Set_Pos(x,y);
for(i=0;i<8;i++)
{
OLED_WrDat(TitleFont[j*16+i]);
}
OLED_Set_Pos(x,y+1);
for(i=0;i<8;i++)
{
OLED_WrDat(TitleFont[j*16+i+8]);
}
x+=8;
}
}
void OLED_FormTemp(unsigned char x,y)//温度标识
{
unsigned char i=0,j=0;
for(j=0;j<5;j++)
{
OLED_Set_Pos(x,y);
for(i=0;i<8;i++)
{
OLED_WrDat(TempFont[j*16+i]);
}
OLED_Set_Pos(x,y+1);
for(i=0;i<8;i++)
{
OLED_WrDat(TempFont[j*16+i+8]);
}
x+=8;
}
}
void OLED_FormHumi(unsigned char x,y)//湿度标识
{
unsigned char i=0,j=0;
for(j=0;j<4;j++)
{
OLED_Set_Pos(x,y);
for(i=0;i<8;i++)
{
OLED_WrDat(HumiFont[j*16+i]);
}
OLED_Set_Pos(x,y+1);
for(i=0;i<8;i++)
{
OLED_WrDat(HumiFont[j*16+i+8]);
}
x+=8;
}
}
void OLED_AnyChar_16X16(unsigned char x, y,unsigned char anystr_temp[])//在指定位置显示一个指定的16X16字符
//x：选定行第几个像素点；y：选定的行数（以16个列像素为单位）；待显示的字符串
{
unsigned char i=0;
if(x>112)//如果指定的行超界，那么转到下一行第一个位置
{
x=0;y++;
}
OLED_Set_Pos(x,y);//置写入位
for(i=0;i<16;i++)
{
OLED_WrDat(anystr_temp[i]);//在字模表中查找相应位置的字模，并写入到指定位置
}
OLED_Set_Pos(x,y+1);//写入位下移半个单位
for(i=0;i<16;i++)
{
OLED_WrDat(anystr_temp[i+16]);
}
}
void OLED_AnyChar_8X16(unsigned char x, y,unsigned char anystr_temp[])//在指定位置显示一个指定的8X16字符
//x：选定行第几个像素点；y：选定的行数（以16个列像素为单位）；待显示的字符串
{
unsigned char i=0;
if(x>112)//如果指定的行超界，那么转到下一行第一个位置
{
x=0;y++;
}
OLED_Set_Pos(x,y);//置写入位
for(i=0;i<8;i++)
{
OLED_WrDat(anystr_temp[i]);//在字模表中查找相应位置的字模，并写入到指定位置
}
OLED_Set_Pos(x,y+1);//写入位下移半个单位
for(i=0;i<8;i++)
{
OLED_WrDat(anystr_temp[i+8]);
}
}
void OLED_DataDisplay_H(unsigned char x, y,unsigned int display_temp[])//定制的数据显示函数
//x：选定行第几个像素点；y：选定的行数（以16个列像素为单位）；待显示的数字字符串
{
unsigned char i=0,j=0;
for(j=0;j<2;j++)//写整数数据
{
OLED_Set_Pos(x,y);//置写入位
for(i=0;i<8;i++)
{
OLED_WrDat(NumberFont[display_temp[j]*16+i]);//在字模表中查找相应位置的字模，并写入到指定位置
}
OLED_Set_Pos(x,y+1);//写入位下移半个单位
for(i=0;i<8;i++)
{
OLED_WrDat(NumberFont[display_temp[j]*16+i+8]);
}
x+=8;
}
}
void OLED_DataDisplay_T(unsigned char x, y,unsigned int display_temp[])//定制的数据显示函数
//x：选定行第几个像素点；y：选定的行数（以16个列像素为单位）；待显示的数字字符串
{
unsigned char i=0,j=0;
for(j=0;j<2;j++)//写整数数据
{
OLED_Set_Pos(x,y);//置写入位
for(i=0;i<8;i++)
{
OLED_WrDat(NumberFont[display_temp[j]*16+i]);//在字模表中查找相应位置的字模，并写入到指定位置
}
OLED_Set_Pos(x,y+1);//写入位下移半个单位
for(i=0;i<8;i++)
{
OLED_WrDat(NumberFont[display_temp[j]*16+i+8]);
}
x+=8;
}
x+=8;
OLED_Set_Pos(x,y);//置写入位
for(i=0;i<8;i++)
{
OLED_WrDat(NumberFont[display_temp[j]*16+i]);//在字模表中查找相应位置的字模，并写入到指定位置
}
OLED_Set_Pos(x,y+1);//写入位下移半个单位
for(i=0;i<8;i++)
{
OLED_WrDat(NumberFont[display_temp[j]*16+i+8]);
}
}
OLED_Hygrothermograph.h
#include "STC15.H"
sbit SCL=P3^2; //串行时钟
sbit SDA=P3^3; //串行数据
#define high 1
#define low 0
#define Brightness 0xCF
#define X_WIDTH 128
#define Y_WIDTH 64
void delay(unsigned int z)
{
unsigned int x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void IIC_Start()
{
SCL = high;
SDA = high;
SDA = low;
SCL = low;
}
void IIC_Stop()
{
SCL = low;
SDA = low;
SCL = high;
SDA = high;
}
void Write_IIC_Byte(unsigned char IIC_Byte)
{
unsigned char i;
for(i=0;i<8;i++)
{
if(IIC_Byte & 0x80)
SDA=high;
else
SDA=low;
SCL=high;
SCL=low;
IIC_Byte<<=1;
}
SDA=1;
SCL=1;
SCL=0;
}
void OLED_WrDat(unsigned char IIC_Data)
{
IIC_Start();
Write_IIC_Byte(0x78);
Write_IIC_Byte(0x40); //write data
Write_IIC_Byte(IIC_Data);
IIC_Stop();
}
void OLED_WrCmd(unsigned char IIC_Command)
{
IIC_Start();
Write_IIC_Byte(0x78); //Slave address,SA0=0
Write_IIC_Byte(0x00); //write command
Write_IIC_Byte(IIC_Command);
IIC_Stop();
}
void OLED_Set_Pos(unsigned char x, unsigned char y)
{
OLED_WrCmd(0xb0+y);
OLED_WrCmd(((x&0xf0)>>4)|0x10);
OLED_WrCmd((x&0x0f)|0x01);
}
void OLED_Fill(unsigned char bmp_dat)
{
unsigned char y,x;
for(y=0;y<8;y++)
{
OLED_WrCmd(0xb0+y);
OLED_WrCmd(0x01);
OLED_WrCmd(0x10);
for(x=0;xcodetab_Hygrothermograph.h
unsigned char code TempChar[32]={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};//放置要写入字符的字模，℃
unsigned char code HumiChar[16]={0xF0,0x08,0xF0,0x80,0x60,0x18,0x00,0x00,0x00,0x31,0x0C,0x03,0x1E,0x21,0x1E,0x00};//放置要写入字符的字模，%
unsigned char code PointChar[16]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00};//一个小数点，.
unsigned char LineFont[]={0x00, 0x08, 0x08, 0x08, 0x08, 0x08};//一个短线，-
/************************************6*8的点阵************************************/
unsigned char code HFont[]=
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,// sp
0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F,// H
0x00, 0x1C, 0xA0, 0xA0, 0xA0, 0x7C,// y
0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C,// g
0x00, 0x7C, 0x08, 0x04, 0x04, 0x08,// r
0x00, 0x38, 0x44, 0x44, 0x44, 0x38,// o
0x00, 0x04, 0x3F, 0x44, 0x40, 0x20,// t
0x00, 0x7F, 0x08, 0x04, 0x04, 0x78,// h
0x00, 0x38, 0x54, 0x54, 0x54, 0x18,// e
0x00, 0x7C, 0x08, 0x04, 0x04, 0x08,// r
0x00, 0x7C, 0x04, 0x18, 0x04, 0x78,// m
0x00, 0x38, 0x44, 0x44, 0x44, 0x38,// o
0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C,// g
0x00, 0x7C, 0x08, 0x04, 0x04, 0x08,// r
0x00, 0x20, 0x54, 0x54, 0x54, 0x78,// a
0x00, 0xFC, 0x24, 0x24, 0x24, 0x18,// p
0x00, 0x7F, 0x08, 0x04, 0x04, 0x78,// h
};
/****************************************8*16的点阵************************************/
unsigned char code NumberFont[]={
0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00,//0
0x00,0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,//1
0x00,0x70,0x08,0x08,0x08,0x08,0xF0,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00,//2
0x00,0x30,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x18,0x20,0x21,0x21,0x22,0x1C,0x00,//3
0x00,0x00,0x80,0x40,0x30,0xF8,0x00,0x00,0x00,0x06,0x05,0x24,0x24,0x3F,0x24,0x24,//4
0x00,0xF8,0x88,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x20,0x20,0x20,0x11,0x0E,0x00,//5
0x00,0xE0,0x10,0x88,0x88,0x90,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x20,0x1F,0x00,//6
0x00,0x18,0x08,0x08,0x88,0x68,0x18,0x00,0x00,0x00,0x00,0x3E,0x01,0x00,0x00,0x00,//7
0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00,//8
0x00,0xF0,0x08,0x08,0x08,0x10,0xE0,0x00,0x00,0x01,0x12,0x22,0x22,0x11,0x0F,0x00//9
};
unsigned char code TitleFont[]={
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00,//L 44
0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//i 73
0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//n 78
0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00,//y 89
0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20,//a 65
0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00,//r 82
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00,//L 44
0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20,//a 65
0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00,//b 66
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00,//. 14
};
unsigned char code TempFont[]={
0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//T 52
0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00,//E 37
0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00,//M 45
0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00,//P 48
0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,//: 26
};
unsigned char code HumiFont[]={
0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20,//R 50
0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20,//H 40
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,//: 26
};
主要的参考来源：http://www.51hei.com/bbs/dpj-127755-1.html