README_zh.md · OpenHarmony-SIG/FastBle

# FastBle

## 简介

FastBle是一个处理蓝牙BLE设备的库，可以对蓝牙BLE设备进行过滤，扫描，连接，读取，写入等。

![gif](preview/operation.gif)

## 下载安装

```shell
ohpm install @ohos/fastble 
```

OpenHarmony ohpm环境配置等更多内容，请参考 [如何安装OpenHarmony har包](https://gitee.com/openharmony-tpc/docs/blob/master/OpenHarmony_har_usage.md) 。

## 使用说明

1. 初始化

```
BleManager.getInstance().init();
```

2. 初始化配置

```
BleManager.getInstance()
            .enableLog(true)
            .setReConnectCount(1, 5000)
            .setConnectOverTime(20000)
            .setOperateTimeout(5000);
```

3. 配置扫描规则

```
let scanRuleConfig: BleScanRuleConfig = new BleScanRuleConfig.Builder()
              .setServiceUuids(serviceUuids)      // 只扫描指定的服务的设备，可选
              .setDeviceName(true, names)         // 只扫描指定广播名的设备，可选
              .setDeviceMac(mac)                  // 只扫描指定mac的设备，可选
              .setAutoConnect(isAutoConnect)      // 连接时的autoConnect参数，可选，默认false
              .setScanTimeOut(10000)              // 扫描超时时间，可选，默认10秒
              .build();
BleManager.getInstance().initScanRule(scanRuleConfig);
```

4. 扫描设备

```
   let _this = this;
    class TempBleScanCallback extends BleScanCallback {
      onScanStarted(success: boolean): void {
        console.info("onScanStarted success:" + success);
        _this.clearScanDevice();
        _this.is_loading = true;
        _this.loading_rotate = 360;
        _this.btn_scan_text = $r('app.string.stop_scan');
        _this.connectedDevices = BleManager.getInstance().getAllConnectedDevice();

}

onLeScan(bleDevice: BleDevice): void {
        console.info("onLeScan");
      }

onScanning(bleDevice: BleDevice): void {
        console.info("onScanning");
        ArrayHelper.add(_this.bleDeviceList, bleDevice);

}

onScanFinished(scanResultList: Array<BleDevice>): void {

console.info("onScanFinished");
        _this.is_loading = false;
        _this.loading_rotate = 0;
        _this.btn_scan_text = $r('app.string.start_scan');
        _this.connectedDevices = BleManager.getInstance().getAllConnectedDevice();
      }
    }

BleManager.getInstance().scan(new TempBleScanCallback());
```

5. 连接设备

```
   let _this = this;

class IndexBleGattCallback extends BleGattCallback {
      public onStartConnect(): void {
        _this.progressDialogCtrl.open();
      }

public onConnectFail(bleDevice: BleDevice, exception: BleException): void {

_this.progressDialogCtrl.close();
        prompt.showToast({ message: _this.toast_connect_fail, duration: 300, })
      }

public onConnectSuccess(bleDevice: BleDevice, gatt: ble.GattClientDevice, status: number): void {
        _this.progressDialogCtrl.close();
        ArrayHelper.add(_this.connectedDevices, bleDevice.getMac());
      }

public onDisConnected(isActiveDisConnected: boolean, device: BleDevice, gatt: ble.GattClientDevice, status: number): void {

_this.progressDialogCtrl.close();
        _this.connectedDevices = BleManager.getInstance().getAllConnectedDevice();

if (isActiveDisConnected) {
          prompt.showToast({ message: _this.toast_active_disconnected, duration: 300 })
        } else {
          prompt.showToast({ message: _this.toast_disconnected, duration: 300 })
        }
      }
    }

BleManager.getInstance().connect(bleDevice, new IndexBleGattCallback());
```

6. 取消扫描

```
BleManager.getInstance().cancelScan();
```

7. 读数据

```
            let bleReadClass: BleReadCallback = new BleReadClass()

BleManager.getInstance().read(
              this.device,
              this.characteristic.serviceUuid,
              this.characteristic.characteristicUuid,
              bleReadClass);
```

8. 写数据

```
            let tempBleWriteCallback: BleWriteCallback = new TempBleWriteCallback()

BleManager.getInstance().write(
              this.device,
              this.characteristic.serviceUuid,
              this.characteristic.characteristicUuid,
              HexUtil.hexStringToBytes(hex),
              true,
              true,
              0,
              tempBleWriteCallback);
          
```

## 接口说明

1. 获取实例
   `public static getInstance(): BleManager;`
2. 配置扫描规则
   `public initScanRule(config: BleScanRuleConfig)`
3. 扫描设备
   `public scan(callback: BleScanCallback)`
4. 取消扫描
   `public cancelScan()`
5. 连接设备
   `public connect(device: BleDevice | string, bleGattCallback: BleGattCallback)`
6. 判断设备是否连接
   `public isConnected(device: BleDevice | string): boolean`
7. 断开连接
   `public disconnect(bleDevice: BleDevice)`
8. 读数据
   `public read(bleDevice: BleDevice, uuid_service: string, uuid_read: string, callback: BleReadCallback)`
9. 写数据
   `public write(bleDevice: BleDevice, uuid_service: string, uuid_write: string, data: Uint8Array, split: boolean=true, sendNextWhenLastSuccess: boolean=true, intervalBetweenTwoPackage: number=0, callback: BleWriteCallback)`

## 约束与限制

- DevEco Studio: NEXT Beta1-5.0.3.806, SDK: API12 Release(5.0.0.66)

- DevEco Studio 版本： 4.1 Canary(4.1.3.317)

- OpenHarmony SDK:API11 (4.1.0.36)

## 目录结构

## 贡献代码

使用过程中发现任何问题都可以提 [Issue](https://gitee.com/openharmony-sig/FastBle/issues) ，当然，也非常欢迎发 [PR](https://gitee.com/openharmony-sig/FastBle/pulls) 共建。

## 开源协议

本项目基于 [Apache LICENSE](https://gitee.com/openharmony-sig/FastBle/blob/master/LICENSE) ，请自由地享受和参与开源。

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