写一个esp32 标准的蓝牙手柄。（十字方向键）， a b x y l1 r1 select start，有连接状态指示灯，未连接时每秒闪一下，连接时不亮。长按start键可以关机，并关闭广播进入睡眠状态。睡眠状态下也可以长按start键退出睡眠，写出完整的工程

以下是一个使用 ESP32 实现蓝牙手柄的示例代码： ```cpp #include <Arduino.h> #include <BLEDevice.h> #include <BLEServer.h> #include <BLEUtils.h> #include <BLE2902.h> // 定义引脚 const int directionPinUp = 2; const int directionPinDown = 3; const int directionPinLeft = 4; const int directionPinRight = 5; const int buttonAPin = 6; const int buttonBPin = 7; const int buttonXPin = 8; const int buttonYPin = 9; const int buttonL1Pin = 10; const int buttonR1Pin = 11; const int buttonSelectPin = 12; const int buttonStartPin = 13; const int ledPin = 14; // 蓝牙服务和特征 UUID static BLEUUID serviceUUID("1812"); static BLEUUID characteristicUUID("2A56"); BLEServer *pServer = NULL; BLECharacteristic *pCharacteristic; bool connected = false; bool sleepMode = false; void setup() { // 初始化引脚 pinMode(directionPinUp, INPUT_PULLUP); pinMode(directionPinDown, INPUT_PULLUP); pinMode(directionPinLeft, INPUT_PULLUP); pinMode(directionPinRight, INPUT_PULLUP); pinMode(buttonAPin, INPUT_PULLUP); pinMode(buttonBPin, INPUT_PULLUP); pinMode(buttonXPin, INPUT_PULLUP); pinMode(buttonYPin, INPUT_PULLUP); pinMode(buttonL1Pin, INPUT_PULLUP); pinMode(buttonR1Pin, INPUT_PULLUP); pinMode(buttonSelectPin, INPUT_PULLUP); pinMode(buttonStartPin, INPUT_PULLUP); pinMode(ledPin, OUTPUT); // 创建 BLE 服务器 BLEDevice::init("ESP32 Bluetooth Gamepad"); pServer = BLEDevice::createServer(); // 创建服务 BLEService *pService = pServer->createService(serviceUUID); // 创建特征 pCharacteristic = pService->createCharacteristic( characteristicUUID, BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_WRITE | BLECharacteristic::PROPERTY_NOTIFY ); // 添加描述器 pCharacteristic->addDescriptor(new BLE2902()); pService->start(); // 启动 BLE 广告 BLEAdvertising *pAdvertising = pServer->getAdvertising(); pAdvertising->start(); } void loop() { // 读取按钮状态 int upState = digitalRead(directionPinUp); int downState = digitalRead(directionPinDown); int leftState = digitalRead(directionPinLeft); int rightState = digitalRead(directionPinRight); int aState = digitalRead(buttonAPin); int bState = digitalRead(buttonBPin); int xState = digitalRead(buttonXPin); int yState = digitalRead(buttonYPin); int l1State = digitalRead(buttonL1Pin); int r1State = digitalRead(buttonR1Pin); int selectState = digitalRead(buttonSelectPin); // 处理连接状态 if (pServer->getConnectedCount() > 0 &&!connected) { connected = true; digitalWrite(ledPin, LOW); } else if (pServer->getConnectedCount() == 0 && connected) { connected = false; } // 未连接时 LED 闪烁 if (!connected) { digitalWrite(ledPin, digitalRead(ledPin) == HIGH? LOW : HIGH); delay(1000); } // 处理长按 Start 键关机和睡眠 int startState = digitalRead(buttonStartPin); if (startState == LOW) { delay(3000); // 检测长按 if (digitalRead(buttonStartPin) == LOW) { if (connected) { pServer->stopAdvertising(); digitalWrite(ledPin, LOW); sleepMode = true; ESP.deepSleep(0); // 进入睡眠状态 } else { ESP.restart(); // 关机 } } } // 从睡眠中唤醒 if (sleepMode && digitalRead(buttonStartPin) == LOW) { delay(3000); // 检测长按 if (digitalRead(buttonStartPin) == LOW) { sleepMode = false; pServer->startAdvertising(); digitalWrite(ledPin, HIGH); } } // 构建要发送的数据 String data = ""; data += upState == LOW? "U" : "u"; data += downState == LOW? "D" : "d"; data += leftState == LOW? "L" : "l"; data += rightState == LOW? "R" : "r"; data += aState == LOW? "A" : "a"; data += bState == LOW? "B" : "b"; data += xState == LOW? "X" : "x"; data += yState == LOW? "Y" : "y"; data += l1State == LOW? "L1" : "l1"; data += r1State == LOW? "R1" : "r1"; data += selectState == LOW? "S" : "s"; // 发送数据 pCharacteristic->setValue(data); pCharacteristic->notify(); } ``` 需要注意的逻辑点： 1. 确保引脚的配置和连接正确，以准确读取按钮状态。 2. 处理好睡眠和唤醒的状态切换，避免出现异常。 3. 优化蓝牙连接和数据传输的稳定性和效率。 [2024-11-26 13:28:39 | AI写代码神器 | 1402点数解答]