iOS 蓝牙开发流程

iOS 蓝牙开发网上的资源好多，找了一篇比较清晰易懂的记录下来

1建立中心角色

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#import <CoreBluetooth/CoreBluetooth.h>
CBCentralManager *manager;
manager = [[CBCentralManager alloc] initWithDelegate: self  queue: nil ];

2扫描外设（discover）

[manager scanForPeripheralsWithServices:nil options:options];

3连接外设(connect)

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- ( void )centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:( NSDictionary  *)advertisementData RSSI:( NSNumber  *)RSSI
{
        if ([peripheral.name  isEqualToString:BLE_SERVICE_NAME]){
                [ self  connect:peripheral];
        }
s);
}

-( BOOL )connect:(CBPeripheral *)peripheral{
        self .manager.delegate =  self ;
        [ self .manager connectPeripheral:peripheral
                                options:[ NSDictionary  dictionaryWithObject:[ NSNumber  numberWithBool: YES ] forKey:CBConnectPeripheralOptionNotifyOnDisconnectionKey]];
}

　　

4扫描外设中的服务和特征(discover)

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- ( void )centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{

    NSLog (@ "Did connect to peripheral: %@" , peripheral);
    _testPeripheral = peripheral;

    [peripheral setDelegate: self ];  <br> //查找服务
    [peripheral discoverServices: nil ];


}

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- ( void )peripheral:(CBPeripheral *)peripheral didDiscoverServices:( NSError  *)error
{


    NSLog (@ "didDiscoverServices" );

    if  (error)
    {
        NSLog (@ "Discovered services for %@ with error: %@" , peripheral.name, [error localizedDescription]);

        if  ([ self .delegate respondsToSelector: @selector (DidNotifyFailConnectService:withPeripheral:error:)])
            [ self .delegate DidNotifyFailConnectService: nil  withPeripheral: nil  error: nil ];

        return ;
    }


    for  (CBService *service in peripheral.services)
    {
         //发现服务
        if  ([service.UUID isEqual:[CBUUID UUIDWithString:UUIDSTR_ISSC_PROPRIETARY_SERVICE]])
        {
            NSLog (@ "Service found with UUID: %@" , service.UUID);  <br> //查找特征
            [peripheral discoverCharacteristics: nil  forService:service];
            break ;
        }


    }
}

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- ( void )peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:( NSError  *)error
{

    if  (error)
    {
        NSLog (@ "Discovered characteristics for %@ with error: %@" , service.UUID, [error localizedDescription]);

        [ self  error];
        return ;
    }

    NSLog (@ "服务：%@" ,service.UUID);
    for  (CBCharacteristic *characteristic in service.characteristics)
    {
       //发现特征
            if  ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@ "xxxxxxx" ]]) {
                NSLog (@ "监听：%@" ,characteristic);<br> //监听特征
                [ self .peripheral setNotifyValue: YES  forCharacteristic:characteristic];
            }

    }
}

5与外设做数据交互(读 与 写)　　

读

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- ( void )peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:( NSError  *)error
{
    if  (error)
    {
        NSLog (@ "Error updating value for characteristic %@ error: %@" , characteristic.UUID, [error localizedDescription]);
        self .error_b = BluetoothError_System;
        [ self  error];
        return ;
    }

//    NSLog(@"收到的数据：%@",characteristic.value);
    [ self  decodeData:characteristic.value];
}

写

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NSData  *d2 = [[PBABluetoothDecode sharedManager] HexStringToNSData:@ "0x02" ];
                [ self .peripheral writeValue:d2 forCharacteristic:characteristic type:CBCharacteristicWriteWithoutResponse];