Objective c didDiscoverServices未调用

我们尝试将蓝牙设备的数据读取到iphone。我们将此流程化
。我们获得了设备名称、设备uuid号和连接。但我们未能获得数据。请指导我们

    -(void) centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral {
        self.connectedPeripheral=peripheral;
        NSLog(@"Connected to %@(%@)",peripheral.name,peripheral.identifier.UUIDString);
        peripheral.delegate=self;
        NSLog(@"DeviceInfoUUID %@",_deviceInfoUUID);

        [peripheral discoverServices:@[self.deviceInfoUUID]];
//we tried this also 
       // [peripheral discoverServices:nil];

    }
    #pragma mark - CBPeripheralManager delegate methods


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

         NSLog(@"peripheral.services    %@",peripheral.services);
        for (CBService *service in peripheral.services) {
            NSLog(@"Discovered service %@",service.description);
            if ([service.UUID isEqual:self.deviceInfoUUID]) {

                [peripheral discoverCharacteristics:nil forService:service];
            }
        }

    }

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请告诉我们代码中的错误。我们是新的此

您是否扫描了带有服务的外围设备，代码如下：

NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], CBCentralManagerScanOptionAllowDuplicatesKey, nil];
    [self.bluetoothManager scanForPeripheralsWithServices:nil options:options];

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外设是否具有UUID

self.DeviceInfo-UUID

的服务？它会宣传吗？@Larme当我们打印设备信息“设备信息”only@Larme我们尝试了[外围discoverServices:nil]；同样但没有luckAs@Larme说，你的设备广告是什么服务？您是否尝试过app store中的LightBlue Explorer应用程序？LightBlue Explorer是查看设备广告的一种好方法。如果无法连接，则您的设备可能有问题