examples/BLE_scan/BLE_scan.ino


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/*
   Based on Neil Kolban example for IDF: https://github.com/nkolban/esp32-snippets/blob/master/cpp_utils/tests/BLETests/SampleScan.cpp
   Ported to Arduino ESP32 by Evandro Copercini
*/
 
#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);
}