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Serial port over Bluetooth or not?

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Serial port over Bluetooth or not?

Subject: Serial port over Bluetooth or not?
From: Daniel Kennett <email@hidden>
Date: Wed, 15 Oct 2008 14:41:51 +0100

Hey list,

I'm writing a framework that'll communicate with the Lego Mindstorms NXT brick [1] over a serial port, which is created either over Bluetooth or a USB connection (using the Bluetooth serial profile and a USB->Serial driver respectively).

The protocol dictates that messages sent over Bluetooth have an additional two bytes at the beginning of the message with a little endian UInt16 describing the length of the message.

I can construct this just fine using EndianU16_NtoL et. al, but what I'm struggling with is finding out if the serial port is a Bluetooth one or not. The serial port has a standard BSD path like /dev/tty.NXT.

Is there any way of finding out this information?

[1] http://mindstorms.lego.com/

 Thanks,

-- Daniel

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