I have a quick question

#include <DHT11.h>
#define DHTPIN A0
#define DHTTYPE DHT11
DHT11 dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin (9600);
  pinMode(8, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(A1, INPUT);

}

void loop() {
  delay(2000);
  int t = dht.readTemperature();
  Serial.print("Temperature: ");
  Serial.print(t);
  Serial.print(" C");
  if(t>=33.0) {
    analogWrite(5,255);
    analogWrite(6,0);
    digitalWrite(8,0);
  }
  else {
    digitalWrite(8,0);
    analogWrite(5,0);
    analogWrite(6,0);
  }
}

Arduino:1.8.16 (Windows 10), board:"Arduino Uno"

sketch_may22a:4:26: error: expected primary-expression before ')' token

C:\Users\써니쁘니\Desktop\sketch_may22a\sketch_may22a.ino: In function 'void loop()':

sketch_may22a:17:15: error: 'class DHT11' has no member named 'readTemperature'

exit status 1

expected primary-expression before ')' token

This report shows "Show detailed output during compilation" in the file -> preferences Enable more information You can make it visible.

That's the error code, but I don't know how to solve it

arduino

2023-05-23 16:47

1 Answers

sketch_may22a:4:26
There was a problem near the 26th letter of the 4th line. The fourth line says DHT11 dht (DHTPIN, DHTTYPE);.
The 26th letter here is ')', which tells us that we need a primary-expression before this.

I don't think I'm telling you the exact question, and I don't know what it means, but the grammar in line 4 seems to be wrong.

The void loop function reportedly experienced a problem.

It says sketch_may22a:17:15 right?
If you look at the 15th letter of the 17th line,

  int t = dht.readTemperature();

points to the first letter r of readTemperature. There's a problem here, so let's look at the next phrase.

'class DHT11' has no member named 'readTemperature'
The DHT11 class says there is no member named readTemperature

int t = dht.readTemperature(); That's where the problem.

dht says there is no readTemperature method.
There is a possibility that the problem occurred one after another due to the previous problem. I think it would be good to solve the previous problem first.

2023-05-24 16:49

If you have any answers or tips

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