Bluetooth Communications error on Matlab

b = Bluetooth('A4933F4074D4',1);
>> fopen(b)
Error using icinterface/fopen (line 83)
Unsuccessful open: Cannot connect to the device. Possible reasons are another application is connected
or the device is not available.

The device was paired before starting Matlab, i was able to create the b variable but cannot seem to open the connection

b

Bluetooth Object : Bluetooth-A4933F4074D4:1

   Communication Settings 
      RemoteName:         a4933f4074d4
      RemoteID:           btspp://
      Channel:            1
      Terminator:         'LF'

   Communication State 
      Status:             closed
      RecordStatus:       off

   Read/Write State  
      TransferStatus:     idle
      BytesAvailable:     0
      ValuesReceived:     0
      ValuesSent:         0

Does anyone know how to solve this?

>>

Answer 1

[Samatha Aleti]

Hi,

Get the “object constructor” which includes the correct “channel ID” by running the following command:

btInfo = instrhwinfo('Bluetooth',RemoteName); 

Create the object accordingly using the “object constructor”.

Make sure to follow and verify the steps mentioned here

[Diogo Simões]

Hi, I did as you said in the first times i tried, just in case i did it again and the result was the same:

btInfo = instrhwinfo('Bluetooth','P Smart');
btInfo = 
  HardwareInfo with properties:

               RemoteName: 'P smart'
                 RemoteID: 'btspp://A4933F4074D4'
    ObjectConstructorName: {'Bluetooth('P smart', 1);'}
                 Channels: {'1'}
                 
            

Then I tried to create the object and it was successfull

bt = Bluetooth('P Smart', 1);
>> bt

   Bluetooth Object : Bluetooth-P Smart:1

   Communication Settings 
      RemoteName:         p smart
      RemoteID:           btspp://A4933F4074D4
      Channel:            1
      Terminator:         'LF'

   Communication State 
      Status:             closed
      RecordStatus:       off

   Read/Write State  
      TransferStatus:     idle
      BytesAvailable:     0
      ValuesReceived:     0
      ValuesSent:         0

The error as always, keeps appearing

>> fopen(bt)
Error using icinterface/fopen (line 83)
Unsuccessful open: Cannot connect to the device. Possible reasons are another application is connected
or the device is not available.
 

If you have any further insights on this I would appreciate it