Hello folks, I have a strange problem with GSM shield on Arduino UNO. I am trying to read temperature and humidity from DHT22 sensor. Without GSM shield, everything works fine, but with shield it doesn't.
#include <DHT.h>
#include <GSM.h>
#define DHTPIN 7
#define DHTTYPE DHT22
#define PINNUMBER "****"
GSM gsmAccess;
DHT dht(DHTPIN, DHTTYPE);
void readDHTdata(){
float humidity = dht.readHumidity();
float temp = dht.readTemperature();
if(isnan(humidity) || isnan(temp)){
Serial.println("Problem with reading data from DHT sensor.");
return;
}
Serial.print("Temperature: ");
Serial.println(temp);
Serial.print("Humidity: ");
Serial.println(humidity);
}
void gsmConnect(){
Serial.println("Connecting to GSM...");
boolean notConnected = true; //stav pripojenia
while(notConnected){
if(gsmAccess.begin(PINNUMBER) == GSM_READY){
notConnected = false;
Serial.println("Connected");
}
else{
Serial.println("Not connected...Trying again.");
delay(1000);
}
}
}
void setup() {
Serial.begin(9600);
dht.begin();
gsmConnect();
}
void loop() {
Serial.println("In Loop");
readDHTdata();
delay(2000);
}
I always get "Problem with reading data from DHT sensor." I tried to change pin for sensor but it doesn't solve this problem. Could someone help me? Thank you in advance