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arduino-cli/libraries/esp_dht/esp_dht.cpp

@@ -0,0 +1,112 @@
+#include "esp_dht.h"
+#include "Arduino.h"
+
+DHT11 :: DHT11(uint8  p)
+{
+    pin=p;
+}
+DHT11::~DHT11()
+{
+    
+} 
+void DHT11:: PortIN()
+{
+   pinMode(pin,INPUT);
+}
+
+void DHT11:: PortOUT()
+{
+   pinMode(pin,OUTPUT);
+}
+
+uint8  DHT11:: Start()
+{
+   uint8  result = 0;
+   PortOUT();
+   DHT11_Pin_Low;
+   delay(20);
+   DHT11_Pin_Hig;
+   delayMicroseconds(45);
+   PortIN();
+   delayMicroseconds(5);
+   while(DHT11_Pin_In==0)
+   {
+   result++;
+   delayMicroseconds(10);
+   }
+   while(DHT11_Pin_In&&result);
+   if(result>3)
+   return true;
+   else
+     return false;
+}
+
+uint8  DHT11::ReadByte()
+{
+  uint8  reader;
+  uint8  bitsum;
+  reader = 0; 
+  PortIN();
+  for(bitsum=0;bitsum<8;bitsum++)
+  {
+    reader = reader << 1;
+    while(DHT11_Pin_In==0);
+    delayMicroseconds(50);
+    if(DHT11_Pin_In)
+       reader |= 0x01;
+    while(DHT11_Pin_In);
+  } 
+  return reader;
+
+  
+}
+uint8  DHT11::Read_Value(uint8  *dht)
+{
+  uint8  sum; 
+  uint8  checksum=0;
+  if(Start())
+  {   
+    dht[0]   = ReadByte();
+    dht[1]   = ReadByte();
+    dht[2]   = ReadByte();
+    dht[3]   = ReadByte();
+    checksum = ReadByte();
+    sum = (dht[0]+dht[1]+dht[2]+dht[3]);
+    if(checksum==sum)
+      return true;
+    else
+      return false;
+  };
+  return false;
+}
+void DHT11::NumToString(uint8  dht,uint8  *str)
+{
+  str[0] = (dht%100)/10 + '0';
+  str[1] = dht%10 + '0';
+  str[2] = '\0';
+}
+
+void DHT11::Get_DHT11_Value()  //DHT11 数据获取
+{
+      uint8 dhtData[5];
+      uint8 outstr[10];
+     if(Read_Value(dhtData))
+    { Serial.print("temperature: "); 
+      NumToString(dhtData[2],outstr);Serial.write(outstr,3);
+      NumToString(dhtData[3],outstr);Serial.write(outstr,3);
+      delay(10);
+      Serial.print("\r\n");
+      Serial.print("humidity: "); 
+      NumToString(dhtData[0],outstr);Serial.write(outstr,3);
+      NumToString(dhtData[1],outstr);Serial.write(outstr,3);
+      delay(10);
+      Serial.print("\r\n"); 
+      //Serial.write(dhtData,4);
+      
+    
+
+    } 
+
+}
+
+

arduino-cli/libraries/esp_dht/esp_dht.h

@@ -0,0 +1,30 @@
+/**********************************************************
+      Make in goouuu.com
+	  Maker:MDC
+***********************************************************/
+#ifndef ESP_DHT11_H
+#define ESP_DHT11_H
+#define uint8  unsigned char
+
+
+class DHT11
+{
+  private:
+          uint8  pin;   
+  public:  //公共方法
+     DHT11(uint8  p);//构造函数
+     ~DHT11();//析构函数         
+     void PortIN();//DHT11 引脚设置为输入模式
+     void PortOUT();//DHT11 引脚设置为输出模式
+     uint8  Start();//开始读取数据
+     uint8  ReadByte();//读取一个字节的数据
+     uint8  Read_Value(uint8  *dht);//读取5个字节，读取一帧温湿度数据
+     void NumToString(uint8  dht,uint8  *str);
+     void Get_DHT11_Value();//获取一帧数据并且打印
+};
+#define  DHT11_Pin_In   digitalRead(pin)
+#define  DHT11_Pin_Low  digitalWrite(pin,0)
+#define  DHT11_Pin_Hig  digitalWrite(pin,1)
+ 
+
+#endif