ESP32蓝牙扫描无法扫描到附近的手机设备
网上找过很多示例代码，也用过ESP32标配的示例代码，使用的是ESP32WROOM芯片板，用过BLE模式，也用过经典蓝牙模式，也用过双模模式，但仍然无法扫描到设备周围的手机的蓝牙地址，示例代码如下，请高手指点，谢谢！/*
Based on Neil Kolban example for IDF: https://github.com/nkolban/esp32-snippets/blob/master/cpp_utils/tests/BLE%20Tests/SampleScan.cpp
Ported to Arduino ESP32 by Evandro Copercini
*/
#include <BLEDevice.h> // 蓝牙Ble设备库
#include <BLEUtils.h>
#include <BLEScan.h> // 蓝牙ble设备的扫描功能库 本篇重点
#include <BLEAdvertisedDevice.h> // 扫描到的蓝牙设备（广播状态）
int scanTime = 120; //In seconds扫描时间
BLEScan* pBLEScan; // 扫描对象
// 扫描广播设备结果回调
class MyAdvertisedDeviceCallbacks: public BLEAdvertisedDeviceCallbacks {
void onResult(BLEAdvertisedDevice advertisedDevice) {
Serial.printf("Advertised Device: %s \n", advertisedDevice.toString().c_str());
//Serial.printf("Advertised Device name: %s \n",advertisedDevice.getName().c_str());
//Serial.printf("Advertised Address: %s \n",advertisedDevice.getAddress().toString().c_str());
}
};
void setup() {
Serial.begin(115200);
Serial.println("Scanning...");
BLEDevice::init("ESP32TEST"); // 蓝牙设备初始化，设置设备名字
pBLEScan = BLEDevice::getScan(); // 创建一个新扫描入口，获取扫描对象
pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks());// 注册扫描结果回调
//BLE_ADDR_TYPE_PUBLIC
pBLEScan->setActiveScan(true); //active scan uses more power, but get results faster // 配置主动扫描
pBLEScan->setInterval(0x50); // 配置扫描间隔时间，ms为单位
pBLEScan->setWindow(0x30);// less or equal setInterval value // 设置扫描窗口大小，需要小于扫描间隔
}
void loop() {
// put your main code here, to run repeatedly:
//启动扫描
BLEScanResults foundDevices = pBLEScan->start(scanTime, false);// 开始扫描 等待扫描结果
Serial.print("Devices found: ");
Serial.println(foundDevices.getCount());
Serial.println("Scan done!");
pBLEScan->clearResults(); // delete results fromBLEScan buffer to release memory，释放扫描缓存消耗
delay(2000);
}
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