MATLAB Answers

return empty when I enter “”instrhwi​nfo('Bluet​ooth','Hph​one')“”

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HDying
HDying on 8 Feb 2014
Answered: Vinod on 23 Nov 2015
>> a = instrhwinfo('Bluetooth')
a =
RemoteNames: {'Hphone'}
RemoteIDs: {'btspp://087A4C001CFC'}
BluecoveVersion: 'BlueCove-2.1.1-SNAPSHOT'
JarFileVersion: 'Version 3.2'
>> instrhwinfo('Bluetooth','Hphone')
ans =
RemoteName: []
RemoteID: []
ObjectConstructorName: []
Channels: []

Answers (2)

HDying
HDying on 8 Feb 2014
Edited: HDying on 8 Feb 2014
thx everybody, I think I find the reason. that is the device is cellphone. the key is it can't run the SPP profile. Look this for details. : http://www.mathworks.com/matlabcentral/answers/98837

Vinod
Vinod on 23 Nov 2015
In this case this was because the phone did not support Bluetooth Serial Port Profile.
Note that this may also have to do with the device going into a power save mode and not being discoverable. If you are sure the device supports Bluetooth SPP, try power cycling your device and then executing
>>instrhwinfo('bluetooth','_myDevice_')
Note that the information returned is frequently usable even if the device is in power save mode, so you only potentially need this information once.

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