#include <Arduino.h>
#include <BLEDevice.h>
#include <BLEUtils.h>
#include <BLEServer.h>

#define SERVICE_UUID "0954b12b-f7f4-48ee-9b36-ce43977dc5be"
#define CHARACTERISTIC_UUID "601a46c8-f361-4c5e-b8e5-d29aca044406"

class MyServerCallbacks : public BLEServerCallbacks
{
    void onConnect(BLEServer *pServer)
    {
        Serial.println("现在有设备接入~");
    };

    void onDisconnect(BLEServer *pServer)
    {
        Serial.println("现在有设备断开连接~");
        // 在有设备接入后Advertising广播会被停止，所以要在设备断开连接时重新开启广播
        // 不然的话只有重启ESP32后才能重新搜索到
        pServer->startAdvertising(); // 该行效果同 BLEDevice::startAdvertising();
    }
};
class MyCallbacks : public BLECharacteristicCallbacks
{

    void onWrite(BLECharacteristic *pCharacteristic)
    {
        uint8_t *data = pCharacteristic->getData();
        //按字节解析指令
    }
};
void setup()
{
    // 初始化BLE并设置设备名称
    BLEDevice::init(name);
    // 创建BLE服务器
    BLEServer *pServer = BLEDevice::createServer();
    // 创建BLE服务
    BLEService *pService = pServer->createService(SERVICE_UUID);
    // 创建BLE特征
    BLECharacteristic *pCharacteristic = pService->createCharacteristic(
        CHARACTERISTIC_UUID,
        // BLECharacteristic::PROPERTY_READ |
        // BLECharacteristic::PROPERTY_WRITE
        BLECharacteristic::PROPERTY_WRITE_NR // 表示一个特性可以被写入，但只接受无响应的写入
    );

    pServer->setCallbacks(new MyServerCallbacks(this));   // 绑定回调函数
    pCharacteristic->setCallbacks(new MyCallbacks(this)); // 设置回调函数
    // 启动服务
    pService->start();

    // 启动广告
    pServer->getAdvertising()->start();
}
void loop()
{

}