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POAccessing serial data from Neurosky Mindset over bluetooth in linux
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  1. POAccessing serial data from Neurosky Mindset over bluetooth in linux
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    copied!<p>I am trying to access the serial data stream being transmitted from the Neurosky Mindset over bluetooth. It is a step in using ThinkGear Communications Protocol mentioned here:</p> <p><a href="http://developer.neurosky.com/docs/doku.php?id=which_api_is_right_for_me" rel="nofollow">http://developer.neurosky.com/docs/doku.php?id=which_api_is_right_for_me</a></p> <p>There are a couple programs that should do this for me (Puzzlebox, Mindstream, etc.), I've either had apparently unsolvable dependency issues or they don't do exactly what I want.</p> <p>I am able to pair the Mindset with my machine using blueman (specifically blueman-manager) I am able to connect the serial port to /dev/rfcomm0. What I am first wondering is: how do I read from this data stream. If I run sdptool records on the device, I get the following output:</p> <p>Service Name: Dev B Service RecHandle: 0x10005 Service Class ID List: "Serial Port" (0x1101) Protocol Descriptor List: "L2CAP" (0x0100) "RFCOMM" (0x0003) Channel: 3 Language Base Attr List: code_ISO639: 0x656e encoding: 0x6a base_offset: 0x100</p> <p>(I get more than that, but that is the service I'm trying to access.)</p> <p>I guess my main questions are: If cat /dev/rfcomm0 displays nothing does that mean that there is no data being transmitted? Is the problem that it isn't being displayed because it is raw? Is there a command that will guarantee to give me any serial data if it is being transmitted? Is there a bluetooth standard command that starts SPP transmission (I've searched for documentation for bluez, but that hasn't been too fruitful)?</p> <p>I have run everything as both root and regular so that doesn't seem to fix it.</p> <p>Any help would be greatly appreciated.</p>
 

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