Hello.

I am using your BLE client server example as a base to learn more and now i want to do something else. In you example you read the temperature from the ESP32 to the client. I want to see if i can now read the Chip ID to the client. when i insert chipid variable into dtostrf as below I get a long number that has not relation to the chip ID.

Please give me some advice:

chipid = ESP.getEfuseMac();

char txString[64]; //[8]
dtostrf(chipid, 1, 2, txString);// float_val, min_width, digits_after_decimal, char_buffer

// Set new characteristic value
pCharacteristic->setValue( txString);//txString
// Send the value to the Android application
pCharacteristic->notify();
Serial.print(“Sent value: “);

Serial.println(txString);