如何连接到最近的BLE设备

Question

    -(void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{

    if (![discoverPeripherals containsObject:peripheral])
    {
        [discoverPeripherals addObject:peripheral];
        NSLog(@"rssi: %@", RSSI);
        [rssiArray addObject:RSSI];
        peripheral.delegate =self;
        NSNumber *max=[rssiArray valueForKeyPath:@"@max.intValue"];
        NSLog(@"max.intValue: %@", max);
        int rssi=abs([[rssiArray valueForKeyPath:@"@max.intValue"] intValue]);
        if (rssi<=40)
        {
            self.discoverPeripherals=peripheral;
            [CBManager connectPeripheral:self.currentPeripheral options:Nil];
        }

    }
    else
    {
        for (int i=0; i<discoverPeripherals.count ; i++)
        {
            CBPeripheral *thisPeripheral =[discoverPeripherals objectAtIndex:i];
            if (thisPeripheral == peripheral)
            {
                [rssiArray replaceObjectAtIndex:i withObject:RSSI];
                NSLog(@"rssi: %@", RSSI);
            }
        }

请帮助您连接最近的BLE设备。我能够获取rssi值但不能连接它们。谢谢