Callback for pin request

[harryberlin]

first, i don't know why, but i tried to use the method to confirm the pin.
one time it took to long time, for confirming the pin, the app continued by it self. pin was confirmed automatically.
is this a bug or a feature?

Is it possible to add a callback for pin request?
So i could open a dialog, to trigger the method to confirm the pin or cancel and do nothing, so the pin should not pass.

[pschatzmann]

Are you saying that it does not work as documented ?

[harryberlin]

Did some test's and got the error.
Because i use BTSerial too.
In this case the modul does confirm automatically
Is there a better Solution to use BTSerial?

#include "AudioTools.h"
#include "BluetoothA2DPSink.h"
#include "BluetoothSerial.h"
#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
#endif

BluetoothSerial BTSerial;

const int BUTTON = 13;          // Sensitive Touch
const int BUTTON_PRESSED = 40;  // touch limit

//I2SStream out;
AnalogAudioStream out;
BluetoothA2DPSink a2dp_sink(out);

void setup() {

  a2dp_sink.set_on_connection_state_changed(connection_state_changed);
  Serial.begin(115200);
  a2dp_sink.activate_pin_code(true);
  a2dp_sink.set_auto_reconnect(true);
  a2dp_sink.start("ReceiverWithPin");

  BTSerial.begin("ReceiverWithPin");
}

void confirm() {
  a2dp_sink.confirm_pin_code();
}

void loop() {
  if (Serial.available()) {
    switch (Serial.read()) {
      case 'p':
        confirm();
        break;
    }
  }
  
}

void connection_state_changed(esp_a2d_connection_state_t state, void *ptr) {

  switch (state) {
    case 0:
      SerialBroadcastln("Disconnected");
      break;
    case 1:
      SerialBroadcastln("Connecting");
      break;
    case 2:
      SerialBroadcastln("Connected");
      break;
    case 3:
      SerialBroadcastln("Disconnecting");
      break;
    default:
      Serial.printf("Got unknown Connection status %d\n", state);
  }

}

void SerialBroadcastln(char* text) {
  Serial.println(text);
  BTSerial.println(text);
}