touchRead

[DiegoMendoza1]

Hi, I am looking for information about the capacitive touch and as they are programmed in the ide of arduino, I have seen that it is necessary to read them with the function touchRead but I do not find which is the librery that needs to recognize this function.

can anybody help me?

Thank you

[me-no-dev]

no library is needed ;) just call touchRead(pin); on any pin that supports touch.

[DiegoMendoza1]

I have done so, but when I build with the arduino ide it says touchRead is not declared

[me-no-dev]

You must have selected the wrong board or something. touchRead is defined here;

[DiegoMendoza1]

The board is correct, I have the esp devkit. I have written this code as an example and still does not recognize that touchRead is declared:

`#include <arduino.h>

int Touch = 20;

void setup() {

Serial.begin(115200);

pinMode(Touch, INPUT);

}

void loop() {

touchRead(Touch);

if(Touch == LOW){

Serial.println("ENABLE");

delay(1000);

else{
Serial.println ("DISABLE");

delay(1000);
}

}
}`

[me-no-dev]

this sketch compiled just fine here. Also "Arduino" is capitalized. Also touchRead will return unsigned integer value, not LOW/HIGH.

[me-no-dev]

btw are you sure you are running the latest esp32-arduino?

[DiegoMendoza1]

I´m not sure, where is it?

[DiegoMendoza1]

I found it, I didn´t have the latest version, now it compiles correctly.

Thanks