I removed those two lines, I got 20bits instead of 19 previously.
Still it does not work.
I'm thinking if that is the problem of pulseIn function.
Thanks.
johnwasser:
seanfan84:
But in the first code, I tried to read all bits into an array first.
If this is still not fast enough, I could not figure out a faster way.If the first code you posted above is what you are calling 'the first code' you should read it again:
You signal for the DHT11 to start sending:
digitalWrite(12,LOW);
delay(18);
digitalWrite(12,HIGH);
Switch to input mode:pinMode(12,INPUT);
Measure the length of the acknowledgement pulse:response = pulseIn(12,HIGH);
AND PRINT OUT THE LENGTH OF THE ACKNOWLEDGEMENT PULSE:Serial.println(response);
Serial.println();Before you fill the buffer with 40 more pulse lengths:for (int i=0; i<40;i++){
data[i] = pulseIn(12,HIGH);
}