IP_global_BLE for Flutter

A Flutter plugin that provides a BLE scanning

Usage

Set android below permissions:

<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH_SCAN"  />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT"  />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

1. Define at the top in main.dart

final GlobalKey<_HomeScreenState> glbKey = GlobalKey<_HomeScreenState>();

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MyHomePage(key: glbKey), // Attach the GlobalKey, dont forget this.
    );
  }
}

2. You can use library by declaring the callback functions:

void IP_CB_BLE_ShowScanInfo(String msg) {
  setState(() {
    msg1=msg;
    print("IP_CB_BLE_ShowScanInfo : " + msg);
  });
}
void IP_CB_BLE_ScannedBLEList( lstScannedBLE) {
  setState(() {
    print("IP_CB_BLE_ScannedBLEList : " + lstScannedBLE.length.toString());
  });
}

void IP_CB_BLE_BLEConnectInfo( String msg) {
  setState(() {
    msg1=msg;
    print("IP_CB_BLE_BLEConnectInfo : " + msg);
  });
}
void IP_CB_BLE_WriteBLEResponse( List<clsWriteBLEResponse> objlstResponse) {
  setState(() {
    msg1=objlstResponse.last.strOriginalRequest.toString() + " = " + objlstResponse.last.strResponse.toString();
    print("IP_CB_BLE_WriteBLEResponse : " + msg1);
  });
}

3. Call IP_scanBLE with globalKey

IP_scanBLE(context, glbKey, "<Filter with Name>", null);

4. Connect and Write/Read the data

List<String> lstWrite = [];
List<clsWriteBLEResponse> lstRead = [];
clsFilterBLE objFilter = clsFilterBLE(strBLEName: 'IG',maxRssi: -100);

lstWrite.add("RSSIFROM:-100:");
lstWrite.add("RSSITO:-100:");

clsBLEConnect obj = new clsBLEConnect(strServiceUUID:"<ServiceUUID>",strCharacteristicUUID:"<CharacteristicUUID>",lstRequest: lstWrite,lstResponse: lstRead,flgRequestWithoutResponse: false,strMAC: strBLEMACAddress);

IP_scanBLE(context, glbKey, objFilter, obj);

5. Stop Scanning

IP_stopScanning();

On read data from GATT you will find the response in below event IP_CB_BLE_WriteBLEResponse class.

Events:

IP_CB_BLE_ShowScanInfo:

Requesting Location Permission
Requesting Bluetooth Permission
Scanning...
<DeviceMAC>: <DeviceName> found!
Scanning Stopped...

IP_CB_BLE_ScannedBLEList:

class clsScannedBLE {
String name;
String BLEmac;
String WiFimac;
int rssi;

clsScannedBLE({
required this.name,
required this.BLEmac,
required this.WiFimac,
required this.rssi,
});
}

The event returns the class object on new entry

List<clsScannedBLE> lstScannedBLE

IP_CB_BLE_BLEConnectInfo:

Connecting...
Discovering Services
Discovering Characteristics
Writing WOR/WR <DATA>
# Successfully - You can replace # with Read / Write or whatever you want.

IP_CB_BLE_WriteBLEResponse:

class clsWriteBLEResponse {
String strOriginalRequest;
String strResponse;

clsWriteBLEResponse({
required this.strOriginalRequest,
required this.strResponse,
});
}

The event returns the class object of clsWriteBLEResponse

List<clsWriteBLEResponse> lstResponse = [];

API Changes