Measuring bluetooth connection force with ESP32 - bluetooth

Question

How can I measure the bluetooth connection force with ESP32? I'm using the available example of BLE to detect the possibility of connection, but I need to measure its strength. Thank you.
I'm using:
#include <BLEDevice.h>
#include <BLEUtils.h>
#include <BLEScan.h>
#include <BLEAdvertisedDevice.h>
int scanTime = 30; //In seconds
class MyAdvertisedDeviceCallbacks: public BLEAdvertisedDeviceCallbacks {
void onResult(BLEAdvertisedDevice advertisedDevice) {
Serial.printf("Advertised Device: %s \n", advertisedDevice.toString().c_str());
}
};
void setup() {
Serial.begin(115200);
Serial.println("Scanning...");
BLEDevice::init("");
BLEScan* pBLEScan = BLEDevice::getScan(); //create new scan
pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks());
pBLEScan->setActiveScan(true); //active scan uses more power, but get results faster
BLEScanResults foundDevices = pBLEScan->start(scanTime);
Serial.print("Devices found: ");
Serial.println(foundDevices.getCount());
Serial.println("Scan done!");
}
void loop() {
// put your main code here, to run repeatedly:
delay(2000);
}`

Answer 1

Just a few lines added to your MyAdvertisedDeviceCallbacks: public BLEAdvertisedDeviceCallbacks :
class MyAdvertisedDeviceCallbacks: public BLEAdvertisedDeviceCallbacks {
void onResult(BLEAdvertisedDevice advertisedDevice) {
Serial.printf("Advertised Device: %s \n", advertisedDevice.toString().c_str
int rssi = advertisedDevice.getRSSI();
Serial.print("Rssi: ");
Serial.println(rssi);
}
};

Answer 2

in wifi i am using this function:
// Take a number of measurements of the WiFi strength and return the average result.
int getStrength(int points){
long rssi = 0;
long averageRSSI=0;
for (int i=0;i < points;i++){
rssi += WiFi.RSSI(); // put your BLE function here
delay(20);
}
averageRSSI=rssi/points;
return averageRSSI;
}
and you have the same function for BLE than WiFi.RSSI(): (see in github source code)
int BLEAdvertisedDevice::getRSSI() {
return m_rssi;
} // getRSSI