Capteur de t° et d'humidité DHT11 ST052

Le programme de la fiche technique ne marche pas. Ci-dessous un programme qui marche sur Arduino UNO: int DHpin = 8; byte dat [5]; byte read_data () { byte data=0; for (int i = 0; i < 8; i ++) { while (digitalRead (DHpin) == LOW); delayMicroseconds (40); if (digitalRead (DHpin) == HIGH) data |= (1 << (7-i)); while (digitalRead (DHpin) == HIGH); } return data; } void start_test () { pinMode (DHpin, OUTPUT); digitalWrite (DHpin, LOW); delay (30); digitalWrite (DHpin, HIGH); delayMicroseconds (10); pinMode (DHpin, INPUT); while (digitalRead (DHpin) == HIGH); //delayMicroseconds (50); while (digitalRead (DHpin) == LOW); while (digitalRead (DHpin) == HIGH); //delayMicroseconds (80); for (int i = 0; i < 5; i ++) dat[i] = read_data (); delayMicroseconds(50); pinMode (DHpin, OUTPUT); digitalWrite (DHpin, HIGH); } void setup () { Serial.begin (9600); } void loop () { start_test (); Serial.print ("Current humdity ="); Serial.print (dat [0], DEC); Serial.print ('.'); Serial.print (dat [1], DEC); Serial.println ('%'); Serial.print ("Current temperature ="); Serial.print (dat [2], DEC); Serial.print ('.'); Serial.print (dat [3], DEC); Serial.println ('C'); Serial.println("---------------------------"); delay (1200); }