//蓝牙状态
- (void)centralManagerDidUpdateState:(CBCentralManager *)central
{NSString * state = nil;switch ([central state]){case CBCentralManagerStateUnsupported:state = @"The platform/hardware doesn't support Bluetooth Low Energy.";break;//应用程序没有被授权使用蓝牙case CBCentralManagerStateUnauthorized:state = @"The app is not authorized to use Bluetooth Low Energy.";break;//尚未打开蓝牙case CBCentralManagerStatePoweredOff:state = @"Bluetooth is currently powered off.";break;//连接成功case CBCentralManagerStatePoweredOn:[self.manager scanForPeripheralsWithServices:nil options:nil];state = @"work";break;case CBCentralManagerStateUnknown:default:;}NSLog(@"Central manager state: %@", state);
}
//查找设备
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{//每个蓝牙设备有自己唯一的标识符，根据标识符确认自己要连接的设备if ([peripheral.identifier isEqual:self.peripheral.identifier]){self.peripheral = peripheral;//数据连接定时器self.connentTimer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(connentPeripheral) userInfo:@"timer" repeats:YES];[self.connentTimer fire];}
}- (void)connentPeripheral {//连接外设self.manager.delegate = self;[self.manager connectPeripheral:_peripheral options:[NSDictionary dictionaryWithObject:[NSNumber numberWithBool:YES] forKey:CBConnectPeripheralOptionNotifyOnDisconnectionKey]];}//连接成功后调用
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{NSLog(@"Did connect to peripheral: %@,%@", peripheral,peripheral.name);[peripheral setDelegate:self];  //查找服务[peripheral discoverServices:nil];[self.connentTimer invalidate];//监测设备是否断开了
//    [self createWorkDataSourceWithTimeInterval:1];
}
//当监听到失去和外围设备连接，重新建立连接
//这个方法是必须实现的，因为蓝牙会中断连接，正好触发这个方法重建连接。重建连接可能造成数秒后才能读取到RSSI。- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error
{[self.manager connectPeripheral:peripheral options:nil];
}- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error
{NSLog(@"%@",error.description);
}//返回的蓝牙服务通知通过代理实现
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error
{if (error){NSLog(@"Discovered services for %@ with error: %@", peripheral.name, [error localizedDescription]);return;}for (CBService *service in peripheral.services){
//        NSLog(@"Service found with UUID: %@", service.UUID.UUIDString);//发现服务if ([service.UUID isEqual:[CBUUID UUIDWithString:@"180D"]])//heart rate{//在一个服务中寻找特征值[peripheral discoverCharacteristics:nil forService:service];}}
}//返回的蓝牙特征值通知通过代理实现
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
{if (error){NSLog(@"Discovered characteristics for %@ with error: %@", service.UUID, [error localizedDescription]);return;}for (CBCharacteristic * characteristic in service.characteristics){NSLog(@"characteristic:%@",characteristic);if( [characteristic.UUID isEqual:[CBUUID UUIDWithString:@"2A37"]]){[self notification:service.UUID characteristicUUID:characteristic.UUID peripheral:peripheral on:YES];
//            [self.peripheral setNotifyValue:YES forCharacteristic:characteristic];}}
}//处理蓝牙发过来的数据
- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{}-(void) notification:(CBUUID *) serviceUUID characteristicUUID:(CBUUID *)characteristicUUID peripheral:(CBPeripheral *)p on:(BOOL)on
{CBService *service = [self getServiceFromUUID:serviceUUID p:p];if (!service){//        if (p.UUID == NULL) return; // zach ios6 addedche//        NSLog(@"Could not find service with UUID on peripheral with UUID \n");return;}CBCharacteristic *characteristic = [self getCharacteristicFromUUID:characteristicUUID service:service];if (!characteristic){//        if (p.UUID == NULL) return; // zach ios6 added//        NSLog(@"Could not find characteristic with UUID  on service with UUID  on peripheral with UUID\n");return;}[p setNotifyValue:on forCharacteristic:characteristic];}-(CBService *) getServiceFromUUID:(CBUUID *)UUID p:(CBPeripheral *)p
{for (CBService* s in p.services){if ([s.UUID isEqual:UUID]) return s;}return nil; //Service not found on this peripheral
}
-(CBCharacteristic *) getCharacteristicFromUUID:(CBUUID *)UUID service:(CBService*)service {for (CBCharacteristic* c in service.characteristics){if ([c.UUID isEqual:UUID]) return c;}return nil; //Characteristic not found on this service
}