Menu with pushbutton Arduino (esp32)

Question

I have a question about building a menu with buttons. Initially, I have to wait for a button to be pressed. When someone leaves, I have to open the button option pressed. I tried the following, but I was unsuccessful. Anyone have any suggestions?

void loop()
{
    int button1 = digitalRead(but1);
    int button2 = digitalRead(but2);

    while(button1 == LOW && button2 ==LOW){};
    while(button1 == HIGH || button2 ==HIGH){
        if(button1 == HIGH){
            Serial.print("RFID")
            rfid_menu();
        }

        if(button2 == HIGH){
            Serial.print("FingerPrint")
            fingerprint_menu();
        }
    };
}

Answer 1

It seems to me it’s just a logical error in the code.

void loop()
{
    int button1 = digitalRead(but1);
    int button2 = digitalRead(but2);

    // esse while esta travando seu programa
    // por que só realiza a leitura dos botão uma vez e utiliza ela para sempre 
    // se nenhum estiver apertado.
    while(button1 == LOW && button2 ==LOW){}; 

    // na verdade ocorre com esse while a mesma coisa, mas se existir algum 
    // botão apertado na primeira execução do loop
    while(button1 == HIGH || button2 ==HIGH){
        if(button1 == HIGH){
            Serial.print("RFID")
            rfid_menu();
        }

        if(button2 == HIGH){
            Serial.print("FingerPrint")
            fingerprint_menu();
        }
    };
}

So if you take them both out while your program should work as expected, only with the if