B4R Question B4R compile error

[rdkartono]

I was playing with B4R + ESP32 DEVKIT V1 + DHT22 sensor.
Previously was using rDHT version 2.0 library , and result always 0.
Previously I used this library at UNO and success.

Here is my code module :

Sub Process_Globals
    Private Led As Pin   
    Private dht_pin As Pin
    Private dht_sensor As dht
    Private dht_temperature As Double
    Private dht_humidity As Double
    Private dht_read_result As Int
    Private timerdht As Timer
End Sub

Public Sub Init
    Led.Initialize(2,Led.MODE_OUTPUT)
    Led_Blink
    
    dht_pin.Initialize(4, dht_pin.MODE_INPUT)
    
    timerdht.Initialize("timerdht_Tick",5000)
    timerdht.Enabled=True
End Sub

Private Sub timerdht_Tick
    dht_temperature = 0
    dht_humidity = 0
    dht_read_result = dht_sensor.Read11(dht_pin.PinNumber)
    dht_temperature = dht_sensor.GetTemperature
    dht_humidity = dht_sensor.GetHumidity
    
    Log("Read Result : ",dht_read_result," Temp : ",dht_temperature," Humidity : ",dht_humidity)
    Led_Blink
End Sub

Public Sub Led_Blink
    Led.DigitalWrite(True)
    CallSubPlus("Led_Off",200,0)
End Sub

Private Sub Led_Off(unused As Byte)
    Led.DigitalWrite(False)
End Sub

Then I found this thread : https://www.b4x.com/android/forum/threads/dht-11-example-for-esp32.82783/
I copy paste Native method to my code module :

#if C
#include "DHT.h"

#define DHTPIN 4     // what digital pin we're connected to

#define DHTTYPE DHT22   // DHT 22

DHT dht(DHTPIN, DHTTYPE);
void setupdht(B4R::Object* o){
dht.begin();
}
  
void readdht (B4R::Object* o) {
   b4r_main::_humidity  = dht.readHumidity();
   b4r_main::_temperature = dht.readTemperature();
}

#End if

But compilation will failed with attached logs .

What might wrong ?
I am new to B4R. Please help

 

[Erel]

Start with: Tip: Getting rid of the excessive compiler logs

The error is:
b4r_main.cpp:9:18: fatal error: DHT.h: No such file or directory

You need to install the library from Arduino IDE. You also need to change the include line to:
#include <DHT.h>

 

[rdkartono]

Thanks Erel for the tips.

previously I tested using UNO , just add rDHT library to B4R and done.
this time , I need to install DHT library from arduino IDE.
Problem solved.