BLE数据传输场景可以通过以下方式实现：

1.在设备端，创建一个BLE服务用于传输数据，并添加一个BLE特征来存储数据。以下是使用Arduino蓝牙库的示例代码：

#include

BLEPeripheral blePeripheral = BLEPeripheral(); BLEService dataService = BLEService("19B10010-E8F2-537E-4F6C-D104768A1214"); BLECharacteristic dataCharacteristic = BLECharacteristic("19B10011-E8F2-537E-4F6C-D104768A1214", BLEWrite | BLERead);

void setup() { blePeripheral.setLocalName("Data Transfer"); blePeripheral.setAdvertisedServiceUuid(dataService.uuid()); blePeripheral.addAttribute(dataService); blePeripheral.addAttribute(dataCharacteristic); blePeripheral.begin(); }

void loop() { blePeripheral.poll(); }

2. 在中央设备端，连接到设备并读写特征。以下是使用Arduino蓝牙库的示例代码：

#include

BLECentral bleCentral = BLECentral(); BLECharacteristic dataCharacteristic;

void setup() { bleCentral.setEventHandler(BLEConnected, blePeripheralConnectHandler); bleCentral.setEventHandler(BLEDisconnected, blePeripheralDisconnectHandler); bleCentral.connectToDeviceWithName("Data Transfer"); }

void loop() { if (dataCharacteristic.valueUpdated()) { // Read the data and do something with it String data = dataCharacteristic.value(); } }

void blePeripheralConnectHandler(BLECentral& central) { BLEDevice device = central.connectedDevice(); BLEService dataService = device.service("19B10010-E8F2-537E-4F6C-D104768A1214"); dataCharacteristic = dataService.characteristic("19B10011-E8F2-537E-4F6C-D104768A1214"); }

void blePeripheralDisconnectHandler(BLECentral& central) { dataCharacteristic = BLECharacteristic(); }

这两个示例演示了如何设置一个BLE服务和特征来传输数据，并在中