pauloceccon2012

Sab Jul 24, 2021 1:10 pm
Meu DHT11 + Modulo ESP8266 está retornando valores zerados.

Por favor, alguém saberia me dizer o motivo do meu DHT11 estar retornando Umidade e Temperatura = 0 ?
Está linkado com o ThingSpeak para receber os dados em gráfico.

#include <SoftwareSerial.h>
#include <dht11.h>
#define RX 2
#define TX 3
#define dht_apin 11 // Analog Pin sensor is connected to
dht11 dhtObject;
String AP = "REDE WIFI";       // AP NAME
String PASS = "SENHA WIFI"; // AP PASSWORD
String API = "MZ6VXUM0LIVPAOS5";   // Write API KEY
String HOST = "api.thingspeak.com";
String PORT = "80";
int countTrueCommand;
int countTimeCommand; 
boolean found = false; 
int valSensor = 1;
  
SoftwareSerial esp8266(RX,TX); 
  
void setup() {
  Serial.begin(9600);
  esp8266.begin(115200);
  sendCommand("AT",5,"OK");
  sendCommand("AT+CWMODE=1",5,"OK");
  sendCommand("AT+CWJAP=\""+ AP +"\",\""+ PASS +"\"",20,"OK");
}

 void loop() {
  
 String getData = "GET /update?api_key="+ API +"&field1="+getTemperatureValue()+"&field2="+getHumidityValue();
 delay(1500);
 sendCommand("AT+CIPMUX=1",5,"OK");
 delay(50);
 sendCommand("AT+CIPSTART=0,\"TCP\",\""+ HOST +"\","+ PORT,15,"OK");
 delay(50);
 sendCommand("AT+CIPSEND=0," +String(getData.length()+4),4,">");
 delay(500);
 esp8266.println(getData);
 delay(1500);
 countTrueCommand++;
 delay(50);
 sendCommand("AT+CIPCLOSE=0",5,"OK");
 delay(50);
}


String getTemperatureValue(){

   dhtObject.read(dht_apin);
   Serial.print(" Temperature(C)= ");
   int temp = dhtObject.temperature;
   Serial.println(temp); 
   delay(50);
   return String(temp); 
  
}


String getHumidityValue(){

   dhtObject.read(dht_apin);
   Serial.print(" Humidity in %= ");
   int humidity = dhtObject.humidity;
   Serial.println(humidity);
   delay(50);
   return String(humidity); 
  
}

void sendCommand(String command, int maxTime, char readReplay[]) {
  Serial.print(countTrueCommand);
  Serial.print(". at command => ");
  Serial.print(command);
  Serial.print(" ");
  while(countTimeCommand < (maxTime*1))
  {
    esp8266.println(command);//at+cipsend
    if(esp8266.find(readReplay))//ok
    {
      found = true;
      break;
    }
  
    countTimeCommand++;
  }
  
  if(found == true)
  {
    Serial.println("OYI");
    countTrueCommand++;
    countTimeCommand = 0;
  }
  
  if(found == false)
  {
    Serial.println("Fail");
    countTrueCommand = 0;
    countTimeCommand = 0;
  }
  
  found = false;
 }

==============================================================================

Está retornando:

13:09:29.526 -> 3. at command => AT+CIPMUX=1 OYI
13:09:30.586 -> 4. at command => AT+CIPSTART=0,"TCP","api.thingspeak.com",80 OYI
13:09:30.818 -> 5. at command => AT+CIPSEND=0,58 OYI
13:09:32.856 -> 7. at command => AT+CIPCLOSE=0 OYI
13:09:33.183 ->  Humidity in %= 0
13:09:33.215 ->  Temperature(C)= 0