基于51单片机的山体环境监测程序（DHT11，火焰传感器，MQ-2烟雾传感，5110显示屏） -

#include <STC12C5A60S2.H>
#include "dht11.h"
#include "intrins.h"
#define ulong unsigned long
#define uchar unsigned char
#define uint unsigned int
unsigned char status;
unsigned char DHT11T_Data_H, DHT11T_Data_L, DHT11RH_Data_H, DHT11RH_Data_L,CheckData_temp;//存放五字节数据
/*可在其他的文件引用温湿度值,实际是温度的整数的10倍如dht11读回的温度是26,则wendu = 260, 湿度同理*/
void Delay_ms(uint ms)
{
unsigned char i, j;
while(ms)
{
_nop_();
i = 11;
j = 190;
do
{
while (--j);
} while (--i);
ms--;
}
}
void Delay_us(uint us) //2us
{
while(us)
{
_nop_();
us--;
}
}
unsigned char start_DHT11(unsigned int *temperature, unsigned int *RH)
{
unsigned char TData_H_temp,TData_L_temp,RHData_H_temp,RHData_L_temp,checktemp;
unsigned char presence,flag = 0;
unsigned int count;
DHT11_OUTPUT;
DHT11_L; //拉低18ms以上
Delay_ms(20);
DHT11_H;
DHT11_INPUT;
Delay_us(30);
presence=DHT11_IN;
if(!presence)
{
count=2;
while((!DHT11_IN)&&count++);//等待低电平
count=2;
while((DHT11_IN)&&count++);//等待高电平
RHData_H_temp = DHT11_ReadChar();
RHData_L_temp = DHT11_ReadChar();
TData_H_temp = DHT11_ReadChar();
TData_L_temp = DHT11_ReadChar();
CheckData_temp = DHT11_ReadChar();
DHT11_OUTPUT;
DHT11_H;
checktemp = RHData_H_temp + RHData_L_temp + TData_H_temp + TData_L_temp;
if ((checktemp == CheckData_temp) && (CheckData_temp != 0))
{
DHT11RH_Data_H = RHData_H_temp;
DHT11RH_Data_L = RHData_L_temp;
DHT11T_Data_H = TData_H_temp;
DHT11T_Data_L = TData_L_temp;
*temperature = TData_H_temp;
*RH = RHData_H_temp;
flag=1;
}
}
return flag;
}
uchar DHT11_ReadChar(void)
{
unsigned char dat;
unsigned int count; //计数防止死等
unsigned char i;
for(i=0;i<8;i++)
{
count=2;
DHT11_INPUT;
while((!DHT11_IN)&&count++); //等待50us低电平结束
Delay_us(40); //40us
dat <<= 1; //50us低电平+28us高电平表示'0'
if(DHT11_IN) //50us低电平+70us高电平表示'1'
dat |= 1;
count=2;
while((DHT11_IN)&&count++);
if(count==1)break; //超时则跳出for循环
}
return dat;
}

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#include "LCD_5110_Font.h"
#include "LCD_5110.h"
#include "delay.h"
/*******************************************************************************
* 函数名 : LCD_write_byte
* 函数功能 : 使用SPI接口写数据到LCD
* 输入 : 写数据/命令选择；
* 输出 : 无
*******************************************************************************/
void LCD_write_byte(unsigned char dt, unsigned char command)
{
unsigned char i;
LCD_5110_CSN = 0;// 片选
LCD_5110_dc=command;
for(i=0; i<8; i++)
{
if(dt&0x80)
LCD_5110_sdin=1;
else
LCD_5110_sdin=0;
dt=dt<<1;
LCD_5110_sclk=0;
Delay1us(1);
LCD_5110_sclk=1;
}
LCD_5110_dc=1;
Delay1us(1);
LCD_5110_CSN = 1;
Delay1us(1);
LCD_5110_sdin=1;
}
/*******************************************************************************
* 函数名 : LCD_init
* 函数功能 : LCD初始化函数
* 输入 : 无
* 输出 : 无
* 说明 : 如果5110,显示全黑或者，模糊，可以调节初始化程序中，//设定液晶偏置电压
*******************************************************************************/
void LCD_init(void)
{
P0M0 = 0x04;
LCD_5110_res=0;
Delay1ms(2);
LCD_5110_res=1;
LCD_write_byte(0x21,0); //初始化Lcd,功能设定使用扩充指令
// LCD_write_byte(0xA5,0); //设定液晶偏置电压
// LCD_write_byte(0x20,0); //使用基本指令
// LCD_write_byte(0x0C,0); //设定显示模式，正常显示
LCD_write_byte(0xC5,0); //设定液晶偏置电压
LCD_write_byte(0x06, 0); // 温度校正
LCD_write_byte(0xC5, 0); // 1:48
LCD_write_byte(0x20,0); //使用基本指令
LCD_write_byte(0x0C,0); //设定显示模式，正常显示
LCD_clear(); //清屏
LCD5110_Light = 1; //
}
/*******************************************************************************
* 函数名 : LCD_set_XY
* 函数功能 : 设置LCD坐标函数
* 输入 : 0－83 Y：0－5
* 输出 : 无
*******************************************************************************/
void LCD_set_XY(unsigned char X, unsigned char Y)
{
LCD_write_byte(0x40 | Y, 0);// column
LCD_write_byte(0x80 | X, 0);// row
}
/*******************************************************************************
* 函数名 : LCD_clear
* 函数功能 : LCD清屏函数
* 输入 : 无
* 输出 : 无
*******************************************************************************/
void LCD_clear(void)
{
unsigned char t;
unsigned char k;
LCD_set_XY(0,0);
for(t=0; t<6; t++)
{
for(k=0; k<84; k++)
{
LCD_write_byte(0x00,1);
}
}
}
/*******************************************************************************
* 函数名 : LCD_write_Zifu
* 函数功能 : 显示8（宽）*16（高）点阵列数字字母符号等半角类
* 输入 : c：显示的字符 row:列 page:页
* 输出 : 无
*******************************************************************************/
//void LCD_write_Zifu(unsigned char row, unsigned char page,unsigned char c)
//{
// unsigned char i;
// c = c-32;
// LCD_set_XY(row*8, page);// 列，页
// for(i=0; i<8; i++)
// {
// LCD_write_byte(Zifu[c*16+i],1);
// }
// LCD_set_XY(row*8, page+1);// 列，页
// for(i=8; i<16; i++)
// {
// LCD_write_byte(Zifu[c*16+i],1);
// }
//}
/*******************************************************************************
* 函数名 : LCD_write_hanzi
* 函数功能 : 显示16（宽）*16（高）点阵列汉字等半角类
* 输入 : c：显示的字符 row:列 page:页
* 输出 : 无
*******************************************************************************/
void LCD_write_hanzi(unsigned char row, unsigned char page,unsigned char c)
{
unsigned char i;
LCD_set_XY(row*8, page); // 列，页
for(i=0; i<16; i++)
{
LCD_write_byte(hanzi[c*32+i],1);
}
LCD_set_XY(row*8, page+1); // 列，页
for(i=16; i<32; i++)
{
LCD_write_byte(hanzi[c*32+i],1);
}
}
/*******************************************************************************
* 函数名 : Init_LCD5110
* 函数功能 : 应用型初始化
* 输入 : 无
* 输出 : 无
*******************************************************************************/
void Init_LCD5110(void)
{
unsigned char k;
LCD_5110_res=0;
for(k=0; k<250; k++);
LCD_5110_res=1;
//如果5110,显示全黑或者，模糊，可以调节初始化程序中，//设定液晶偏置电压
LCD_init(); //初始化LCD模块
LCD_clear(); //清屏幕
LCD5110_Light = 1;
}
/*******************************************************************************
* 函数名 : Test_LCD
* 函数功能 : 5110液晶测试程序
* 输入 : 无
* 输出 : 无
*******************************************************************************/
void Test_LCD(void)
{
unsigned char k;
LCD_5110_res=0;
for(k=0; k<250; k++);
LCD_5110_res=1;
LCD_init(); //初始化LCD模块
LCD_clear(); //清屏幕
LCD_write_hanzi(1,0,0); //山
LCD_write_hanzi(3,0,1); //体
LCD_write_hanzi(5,0,2); //检
LCD_write_hanzi(7,0,3); //测
LCD_ShowString(0, 2, "R: %", 16);
LCD_ShowString(42, 2, "T: C", 16);
LCD_ShowString(0, 4, "M: ", 16);
//LCD_write_hanzi(9,0,4); //检
// LCD_write_hanzi(4,2,5); //测
// LCD_write_hanzi(6,2,6); //预
//
// LCD_write_hanzi(6,2,7); //预
// LCD_write_hanzi(6,2,8); //预
// LCD_write_hanzi(6,2,9); //预
//// LCD_ShowString(0,4,"CUIT",16);
// LCD_write_hanzi(4,4,10); //张
// LCD_write_hanzi(6,4,11); //媛
// LCD_write_hanzi(8,4,11); //媛
}
//在指定位置显示一个字符,包括部分字符
//mode:0,反白显示;1,正常显示
//size:选择字体 16/12
void LCD_ShowChar(unsigned char x,unsigned char y,unsigned char chr, unsigned char font_size)
{
unsigned char c=0,i=0;
c=chr-' ';//得到偏移后的值
if(x>Max_Column-1) {
x=0;
y=y+2;
}
if(font_size ==16)
{
LCD_set_XY(x,y);
if((chr<='9')&&(chr >= '0'))
{
for(i=0; i<6; i++)
LCD_write_byte(F8X16[c*16+i],LCD_DATA);
LCD_set_XY(x,y+1);
for(i=0; i<6; i++)
LCD_write_byte(F8X16[c*16+i+8],LCD_DATA);
}
else
{
for(i=0; i<8; i++)
LCD_write_byte(F8X16[c*16+i],LCD_DATA);
LCD_set_XY(x,y+1);
for(i=0; i<8; i++)
LCD_write_byte(F8X16[c*16+i+8],LCD_DATA);
}
}
else {
LCD_set_XY(x,y);
for(i=0; i<6; i++) {
LCD_write_byte(F6x8[c][i],LCD_DATA);
}
}
}
//显示一个字符号串
void LCD_ShowString(unsigned char x,unsigned char y,unsigned char *chr, unsigned char font_size)
{
unsigned char j=0;
while (chr[j]!='\0')
{
LCD_ShowChar(x,y,chr[j], font_size);
if(font_size == 16)
{
if((chr[j] >= '0')&&(chr[j] <= '9'))
{
x+=5;
} else
x+=8;
if(x>72) {
x=0;
y+=2;
}
}
else
{
x+=6;
if(x>78) {
x=0;
y+=1;
}
}
j++;
}
}
//m^n函数
unsigned long oled_pow(unsigned char m,unsigned char n)
{
unsigned long result=1;
while(n--)result*=m;
return result;
}
//显示2个数字
//x,y :起点坐标
//len :数字的位数
//size:字体大小
//mode:模式 0,填充模式;1,叠加模式
//num:数值(0~4294967295);
void LCD_ShowNum(unsigned char x,unsigned char y,unsigned long num,unsigned char len)
{
/* unsigned char t,temp;
unsigned char enshow=0;
for(t=0; t<len; t++)
{
temp=(num/oled_pow(10,len-t-1))%10;
if(enshow==0&&t<(len-1))
{
if(temp==0)
{
// LCD_ShowChar(x+(size/2)*t,y,' ');
LCD_ShowChar(x+6*t,y,'0', 6);
continue;
} else enshow=1;
}
// LCD_ShowChar(x+(size/2)*t,y,temp+'0');
LCD_ShowChar(x+6*t,y,temp+'0', 6);
}
*/
////////////////////
unsigned char t,temp;
unsigned char enshow=0;
for(t=0; t<len; t++)
{
temp=(num/oled_pow(10,len-t-1))%10;
if(enshow==0&&t<(len-1))
{
if(temp==0)
{
LCD_ShowChar(x+6*t,y,' ',6);
continue;
} else enshow=1;
}
LCD_ShowChar(x+6*t,y,temp+'0',6);
}
}
void LCD_ugm3(unsigned char x,unsigned char y)
{
unsigned i;
LCD_set_XY(x,y);
for(i = 0; i < 13; i++)
{
LCD_write_byte(ugm3[0][i],LCD_DATA);
}
LCD_set_XY(x,y+1);
for(i = 0; i < 13; i++)
{
LCD_write_byte(ugm3[1][i],LCD_DATA);
}
}
void System_runing(unsigned char x,unsigned char y)
{
static bit temp = 0;
temp = ~temp;
LCD_set_XY(x,y);
if(temp)
LCD_write_byte(0x80, LCD_DATA);
else
LCD_write_byte(0x00, LCD_DATA);
}
void Show_Back(void)
{
LCD_clear(); //清屏
LCD_ShowString(0, 1, "T: ", 1);
LCD_ShowString(18, 1, "C ", 1);
LCD_ShowString(27, 1, "CH2O: ", 1);
LCD_ShowString(0, 3, "R: ", 1);
LCD_ShowString(6, 3, ": ", 1);
LCD_ShowString(18, 3, "% ", 1);
LCD_ShowString(27, 3, "PM2.5: ", 1);
LCD_ShowString(47, 3, "5: ", 1);
LCD_ugm3(70,0);
LCD_ugm3(70,2);
}

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/********************* 做一次ADC转换 *******************/
uint adc10_start(uchar channel) //channel = 0~7
{
uint adc;
uchar i;
ADC_RES = 0;
ADC_RESL = 0;
ADC_CONTR = (ADC_CONTR & 0xe0) | ADC_START | channel;
i = 250;
do{
if(ADC_CONTR & ADC_FLAG)
{
ADC_CONTR &= ~ADC_FLAG;
adc = (uint)ADC_RES;
adc = (adc << 2) | (ADC_RESL & 3);
return adc;
}
}while(--i); //超时检测
return 1024;
}

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/********************* 主函数 *************************/
void main(void)
{
uchar i;
uint j; //烟雾浓度缓存
char show_temp[20] = {0}; //液晶显示缓存
unsigned int Temp1, RH1; //温度、湿度缓存
Uart1_Init(); //串口初始化
LCD_init(); //lcd初始化
Test_LCD(); //开机界面
//Show_Back();
//PrintString("****** STC12C5A60S2系列ADC程序 2011-02-27 ******\r\n"); //上电后串口发送一条提示信息
P1ASF = 0xff; //12C5A60AD/S2系列模拟输入(AD)选择
ADC_CONTR = ADC_360T | ADC_ON;
while(1)
{
start_DHT11(&Temp1, &RH1); //读取DHT11温湿度值
j = adc10_start(1); //读取烟雾浓度值
sprintf(show_temp, "%d",j);
LCD_ShowString(13, 4, show_temp, 16); //显示烟雾浓度
sprintf(show_temp, "%d",RH1);
LCD_ShowString(12, 2, show_temp, 16); //显示湿度
sprintf(show_temp, "%d",Temp1);
LCD_ShowString(55, 2, show_temp, 16); //显示温度
if (beep == 0) //火焰报警
{
LCD_ShowString(48, 4, "Fire", 16);
}
else
{
LCD_ShowString(48, 4, "Safe", 16);
}
// start_DHT11(&Temp1, &RH1);
// sprintf(show_temp, "%02d",Temp1);
// UART1_SendString(show_temp);
// UART1_SendString("\r\n");
// sprintf(show_temp, "%02d",RH1);
//UART1_SendData(j);
UART1_SendData(j/1000 + '0');
UART1_SendData(j%1000/100 + '0');
UART1_SendData(j%100/10 + '0');
UART1_SendData(j%10 + '0');
UART1_SendString("\r\n");
delay_dms(250);
}
}

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