Subject:
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RE: Bluetooth Direct and System Commands
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 18 Sep 2006 00:00:11 GMT
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Reply-To:
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<dickswan@SAYNOTOSPAMsbcglobal.net>
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Viewed:
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2576 times
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From: Brian Bagnall
There are some Bluetooth commands that are a little cryptic and sparsely
documented in the official Lego docs. I was wondering if anyone could
point me to some talk on this or shed some light on what these are used
for:
See answers below.
Direct Commands:
MESSAGEWRITE
MESSAGEREAD
Used to read and write to the "messaging" queues. These queues are used
in NXT-to-NXT BT communications
LSGETSTATUS
LSWRITE
LSREAD
LS == Low Speed. These are commands dealing with the I2C bus available
on every sensor. Low speed because port 4 can also be HS (High Speed
RS-485.
System Commands:
OPEN WRITE LINEAR
OPEN READ LINEAR (INTERNAL COMMAND)
OPEN WRITE DATA
OPEN APPEND DATA
Opens files in the flash file system. Some file types (executable files,
wav/rso files need to be stored in a contiguous block of flash because
the programs that use them require contiguous data. The other files are
stored in a linked list of flash sectors
POLL COMMAND LENGTH
POLL COMMAND
Don't have a clue. Suspect they may be not be used.
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Message has 1 Reply:
 | | Re: Bluetooth Direct and System Commands
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| (...) By way of clarification, the two open write commands above (as well as the OpenWrite command) cannot be used to open existing files. They both return error messages if the specified file already exists. Although they are named "OpenWrite..." (...) (18 years ago, 18-Sep-06, to lugnet.robotics)
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Message is in Reply To:
| | Bluetooth Direct and System Commands
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| There are some Bluetooth commands that are a little cryptic and sparsely documented in the official Lego docs. I was wondering if anyone could point me to some talk on this or shed some light on what these are used for: Direct Commands: MESSAGEWRITE (...) (18 years ago, 17-Sep-06, to lugnet.robotics)
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