App Inventor unable to display data (string or int) that is read from a BLE sensor device using esp32

[Juan_Antonio]

Send the values ​​as a string:
pCharacteristic->setValue(alea.c_str());

BLE ESP32. Bluetooth. Send. Receive. Arduino IDE. Multitouch

6.- ESP32 sends automatically (Notify) a random number to App. p110i_esp32_ble_notifica.aia (220.6 KB) The Bluetooth LE specification includes a mechanism known as notify that lets you know when data’s changed. When notify on a characteristic is enabled and the sender writes to it, the new value is automatically sent to the receiver, without the receiver explicitly issuing a read command. (Reference ArduinoBLE) ESP32 code generates a random number every 500 milisecond and notifies (sends) i…