基于stm32风速风向温湿度和瓦斯检测（仿真+代码）

资料下载地址：基于stm32风速风向温湿度和瓦斯检测

一、项目功能

1.风速，风向，温湿度，瓦斯，报警。

2.可以设置温湿度，瓦斯，风速报警阈值。

3.数据上传到云平台。

二、仿真图

 三、程序

#include "dht11.h"
#include "main.h"void delay(uint32_t us)
{while(us--){for(int i = 0 ; i < 5 ;i++);}
}void DHT11_IO_IN(void)//温湿度模块输入函数
{__HAL_RCC_GPIOA_CLK_ENABLE();GPIO_InitTypeDef GPIO_InitStructure;GPIO_InitStructure.Pin = GPIO_PIN_15;GPIO_InitStructure.Mode = GPIO_MODE_INPUT;GPIO_InitStructure.Pull = GPIO_NOPULL;GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;HAL_GPIO_Init(GPIOA,&GPIO_InitStructure);
}void DHT11_IO_OUT(void)//温湿度模块输出函数
{__HAL_RCC_GPIOA_CLK_ENABLE();GPIO_InitTypeDef GPIO_InitStructure;GPIO_InitStructure.Pin = GPIO_PIN_15;GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;GPIO_InitStructure.Pull = GPIO_NOPULL;GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;HAL_GPIO_Init(GPIOA,&GPIO_InitStructure);
}//复位DHT11void DHT11_Rst(void)   {                DHT11_IO_OUT(); //SET OUTPUTDHT11_DQ_High ;DHT11_DQ_Low; //DQ=0delay(30000);    //拉低至少18msDHT11_DQ_High; //DQ=1 delay(100);     //主机拉高20~40us}//等待DHT11的回应//返回1:未检测到DHT11的存在//返回0:存在uint8_t DHT11_Check(void)    {   uint8_t retry=0;//定义临时变量DHT11_IO_IN();    //SET INPUT if (HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_15)==1)//DHT11会拉低40~80us{return 0 ;}else{while(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_15)==0 && (retry < 200))retry++ ;}delay(40) ;delay(40) ;return 1 ;}//从DHT11读取一个位//返回值：1/0uint8_t DHT11_Read_Bit(void)  {uint8_t retry=0;while((HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_15)==1)&&retry<100)//等待变为低电平{retry++;delay(2);}retry=0;while((HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_15)==0)&&retry<100)//等待变高电平{retry++;delay(2);}delay(40);//等待40usif(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_15)==1)return 1;else return 0;   }//从DHT11读取一个字节//返回值：读到的数据uint8_t DHT11_Read_Byte(void)    {        uint8_t i,dat;dat=0;for (i=0;i<8;i++) {dat<<=1; dat|=DHT11_Read_Bit();}    return dat;}//从DHT11读取一次数据//temp:温度值(范围:0~50°)//humi:湿度值(范围:20%~90%)//返回值：0,正常;1,读取失败uint8_t DHT11_Read_Data(uint8_t *temp,uint8_t *humi)    {        uint8_t buf[5];uint8_t i;DHT11_Rst();if(DHT11_Check()==0){for(i=0;i<5;i++)//读取40位数据{buf[i]=DHT11_Read_Byte();}if((buf[0]+buf[1]+buf[2]+buf[3])==buf[4]){*humi=buf[0];*temp=buf[2];}}else return 1;return 0;    }//初始化DHT11的IO口 DQ 同时检测DHT11的存在//返回1:不存在//返回0:存在     void DHT11_Init(void){     DHT11_Rst();  //复位DHT11DHT11_Check();//等待DHT11的回应}uint8_t DHT_ByteRead(unsigned char *dat)
{	unsigned char temp=0;unsigned char x,y;unsigned char m=0;unsigned char n=0;unsigned char mask=0x01;unsigned char sum=0;DHT11_IO_IN() ;for(y=0;y<5;y++){for(mask=0x80;mask!=0;mask>>=1){	while(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_15)==0&&m<200)m++;delay(30);if(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_15)==1)temp|=mask;elsetemp&=(~mask);while(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_15)==1&&n<200)n++;}*(dat+y)=temp;temp=0;}for(x=0;x<4;x++)sum+=*(dat+x);	if((sum&=0xff)==*(dat+4))return 1;else return 0;
}#include "oled.h"
#include "codetab.h"
#include "main.h"void OLED_WR_Byte(u8 dat,u8 cmd)
{	u8 i;			  if(cmd)OLED_DC_Set();else OLED_DC_Clr();		  OLED_CS_Clr();for(i=0;i<8;i++){			  OLED_SCLK_Clr();if(dat&0x80)OLED_SDIN_Set();else OLED_SDIN_Clr();OLED_SCLK_Set();dat<<=1;   }				 		  OLED_CS_Set();OLED_DC_Set();   	  
} void OLED_Set_Pos(unsigned char x, unsigned char y) 
{ OLED_WR_Byte(0xb0+y,OLED_CMD);OLED_WR_Byte(((x&0xf0)>>4)|0x10,OLED_CMD);OLED_WR_Byte((x&0x0f)|0x01,OLED_CMD); 
} //开启OLED显示    
void OLED_Display_On(void)
{OLED_WR_Byte(0X8D,OLED_CMD);  //SET DCDC命令OLED_WR_Byte(0X14,OLED_CMD);  //DCDC ONOLED_WR_Byte(0XAF,OLED_CMD);  //DISPLAY ON
}//关闭OLED显示     
void OLED_Display_Off(void)
{OLED_WR_Byte(0X8D,OLED_CMD);  //SET DCDC命令OLED_WR_Byte(0X10,OLED_CMD);  //DCDC OFFOLED_WR_Byte(0XAE,OLED_CMD);  //DISPLAY OFF
}//清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!!	  
void OLED_Clear(void)  
{  u8 i,n;		    for(i=0;i<8;i++)  {  OLED_WR_Byte (0xb0+i,OLED_CMD);    //设置页地址（0~7）OLED_WR_Byte (0x00,OLED_CMD);      //设置显示位置—列低地址OLED_WR_Byte (0x10,OLED_CMD);      //设置显示位置—列高地址   for(n=0;n<128;n++)OLED_WR_Byte(0,OLED_DATA); } //更新显示
}//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白显示;1,正常显示				 
//size:选择字体 16/12 
void OLED_ShowChar(u8 x,u8 y,u8 chr)
{      	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(SIZE ==16){OLED_Set_Pos(x,y);	for(i=0;i<8;i++)OLED_WR_Byte(F8X16[c*16+i],OLED_DATA);OLED_Set_Pos(x,y+1);for(i=0;i<8;i++)OLED_WR_Byte(F8X16[c*16+i+8],OLED_DATA);}else {	OLED_Set_Pos(x,y+1);for(i=0;i<6;i++)OLED_WR_Byte(F6x8[c][i],OLED_DATA);}
}//m^n函数
u32 oled_pow(u8 m,u8 n)
{u32 result=1;	 while(n--)result*=m;    return result;
}		//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 OLED_ShowNum(u8 x,u8 y,u32 num,u8 len,u8 size)
{         	u8 t,temp;u8 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){OLED_ShowChar(x+(size/2)*t,y,' ');continue;}else enshow=1; }OLED_ShowChar(x+(size/2)*t,y,temp+'0'); }
} //显示一个字符号串
void OLED_ShowString(u8 x,u8 y,u8 *chr)
{unsigned char j=0;while (chr[j]!='\0'){		OLED_ShowChar(x,y,chr[j]);x+=8;if(x>120){x=0;y+=2;}j++;}
}//显示汉字
void OLED_ShowCHinese(u8 x,u8 y,u8 no)
{      			    u8 t,adder=0;OLED_Set_Pos(x,y);	for(t=0;t<16;t++){OLED_WR_Byte(Hzk[2*no][t],OLED_DATA);adder+=1;}	OLED_Set_Pos(x,y+1);	for(t=0;t<16;t++){	OLED_WR_Byte(Hzk[2*no+1][t],OLED_DATA);adder+=1;}					
}void OLED_Init(void)
{ 	int ticks;GPIO_InitTypeDef  GPIO_InitStructure;__HAL_RCC_GPIOB_CLK_ENABLE();GPIO_InitStructure.Pin = GPIO_PIN_2|GPIO_PIN_7|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_8|GPIO_PIN_13;	 //PD3,PD6推挽输出  GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP; 		 //推挽输出GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;//速度50MHzHAL_GPIO_Init(GPIOB, &GPIO_InitStructure);	  HAL_GPIO_WritePin(GPIOB,GPIO_PIN_2|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_8|GPIO_PIN_13,GPIO_PIN_SET);	//PD3,PD6 输出高HAL_GPIO_WritePin(GPIOB,GPIO_PIN_7,GPIO_PIN_RESET);GPIO_InitStructure.Pin = GPIO_PIN_5;GPIO_InitStructure.Mode = GPIO_MODE_INPUT; HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);	  OLED_RST_Set();delay_ms(1);OLED_RST_Clr();delay_ms(1);OLED_RST_Set(); OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled panelOLED_WR_Byte(0x00,OLED_CMD);//---set low column addressOLED_WR_Byte(0x10,OLED_CMD);//---set high column addressOLED_WR_Byte(0x40,OLED_CMD);//--set start line address  Set Mapping RAM Display Start Line (0x00~0x3F)OLED_WR_Byte(0x81,OLED_CMD);//--set contrast control registerOLED_WR_Byte(0xCF,OLED_CMD); // Set SEG Output Current BrightnessOLED_WR_Byte(0xA1,OLED_CMD);//--Set SEG/Column Mapping     0xa0左右反置 0xa1正常OLED_WR_Byte(0xC8,OLED_CMD);//Set COM/Row Scan Direction   0xc0上下反置 0xc8正常OLED_WR_Byte(0xA6,OLED_CMD);//--set normal displayOLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)OLED_WR_Byte(0x3f,OLED_CMD);//--1/64 dutyOLED_WR_Byte(0xD3,OLED_CMD);//-set display offset	Shift Mapping RAM Counter (0x00~0x3F)OLED_WR_Byte(0x00,OLED_CMD);//-not offsetOLED_WR_Byte(0xd5,OLED_CMD);//--set display clock divide ratio/oscillator frequencyOLED_WR_Byte(0x80,OLED_CMD);//--set divide ratio, Set Clock as 100 Frames/SecOLED_WR_Byte(0xD9,OLED_CMD);//--set pre-charge periodOLED_WR_Byte(0xF1,OLED_CMD);//Set Pre-Charge as 15 Clocks & Discharge as 1 ClockOLED_WR_Byte(0xDA,OLED_CMD);//--set com pins hardware configurationOLED_WR_Byte(0x12,OLED_CMD);OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomhOLED_WR_Byte(0x40,OLED_CMD);//Set VCOM Deselect LevelOLED_WR_Byte(0x20,OLED_CMD);//-Set Page Addressing Mode (0x00/0x01/0x02)OLED_WR_Byte(0x02,OLED_CMD);//OLED_WR_Byte(0x8D,OLED_CMD);//--set Charge Pump enable/disableOLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disableOLED_WR_Byte(0xA4,OLED_CMD);// Disable Entire Display On (0xa4/0xa5)OLED_WR_Byte(0xA6,OLED_CMD);// Disable Inverse Display On (0xa6/a7) OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panelOLED_WR_Byte(0xAF,OLED_CMD); /*display ON*/ OLED_Clear();OLED_Set_Pos(0,0); 	
}  void delay_ms(uint16_t times)
{for(int i  = 0 ; i < times ; i ++){for(int m = 50000;m > 0 ; m --);}
}
void DisPlay_Init(void)
{OLED_ShowCHinese(0,0,3);	//温OLED_ShowCHinese(15,0,4); //度OLED_ShowString(30,0,":");//:OLED_ShowCHinese(65,0,1);	//湿OLED_ShowCHinese(80,0,4); //度OLED_ShowString(95,0,":");//:OLED_ShowCHinese(0,2,7);	//OLED_ShowCHinese(15,2,8); //OLED_ShowString(30,2,":");//:OLED_ShowCHinese(0,4,7);	//OLED_ShowCHinese(15,4,9); //OLED_ShowString(30,4,":");//:OLED_ShowCHinese(0,6,5);	//OLED_ShowCHinese(15,6,6); //OLED_ShowString(30,6,":");//:	}