Easy Bluetooth Module (Need Help) Urgent!!

computer guy · 2009-12-22 09:12

Does anyone have an object for the Easy Bluetooth Module.

I need to pair two modules together and communicate back and forth between the two modules and an object would be handy.

Thank you

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Post Edited (computer guy) : 1/1/2010 12:51:28 PM GMT

SamMishal · 2009-12-22 11:40

Hi Guy,

The bluetooth module uses Serial comms with the propeller to operate and to give/get the data
received/sent from the propeller.

So all you need to operate the module is a FullDuplexSerial or FullDuplexSerialPlus or similar serial
object. Make sure you have the right PINS and Baudrate and that is it.

Use the Serial object to comm with the module and command it or give it data to send or to get
data received from it.

Other than the need to initialize the module with certain initial commands and settings from then onwards
for all intents and purposes you are communicating with the other Propeller as if there were a direct
Serial link between the two.

As fas as the initialization this too is done using the Serial comm object to comm with the module
but you need to use certain preamble bytes etc. This you can figure out from the module's manual.

So all you need is a Serial comms object (e.g. FullDuplexSerial) and you are up and running. The only hard
bit is figuring out how to configure the modules using their command sequences etc.

Samuel

computer guy · 2009-12-22 14:42

I know this probably means nothing without the datasheet but does this look right so far?

CON

StartDelimiter         = $02
EndDelimiter           = $03
REQ_PACKET             = $52
CFM_PACKET             = $43
IND_PACKET             = $69
RES_PACKET             = $72

GAP_WRITE_LOCAL_NAME = $04

PUB setName(name) : okay | ptr, csum, chars, Length 

  ptr := 0
  Length := StrSize(name)
  dataSet[noparse][[/noparse]ptr++] := StartDelimiter
  dataSet[noparse][[/noparse]ptr++] := REQ_PACKET
  dataSet[noparse][[/noparse]ptr++] := GAP_WRITE_LOCAL_NAME                                
  dataSet[noparse][[/noparse]ptr++] := Length >> 8          
  dataSet[noparse][[/noparse]ptr++] := Length
  csum := $FF
  Repeat chars from 1 to ptr-1
    csum := csum - dataSet[noparse][[/noparse]chars]
  dataSet[noparse][[/noparse]ptr] := csum
  Repeat strsize(name)         ' Add name to packet
     dataSet[noparse][[/noparse]ptr++] := byte[noparse][[/noparse]name++]
  dataSet[noparse][[/noparse]ptr++] := EndDelimiter 
 
  Repeat chars from 0 to ptr
    tx(dataSet[noparse][[/noparse]chars])

Thank you

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Post Edited (computer guy) : 12/22/2009 2:48:35 PM GMT

computer guy · 2010-01-01 10:24

So that I can get used to the operation of the Easy Bluetooth Module I decided to start with a BS2.

I tried to use this code to get the local name, however it's not working.

SEROUT TX, Baud, [noparse][[/noparse]$02,$52,$03,$00,$00,$55,$03]
SERIN RX, Baud, [noparse][[/noparse]var1]
DEBUG var1

Can anyone help me, please?

Thank you

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StefanL38 · 2010-01-01 21:08

did you try this?

http://www.parallax.com/Portals/0/Downloads/docs/prod/comm/30085_Easy_BluetoothSoftware.zip

http://www.parallax.com/Portals/0/Downloads/docs/prod/comm/30085_EasyBluetoothEducationExamples.zip

the can be found here

http://www.parallax.com/StoreSearchResults/tabid/768/List/0/SortField/4/ProductID/550/Default.aspx?txtSearch=Easy+Bluetooth+Module

best regards

Stefan

computer guy · 2010-01-02 00:09

All of those demos are for sending data to the Easy Bluetooth module. Thank you anyway Stefan.
I need to know how to send commands to it and read its response. I have read the manual and I understand the UART packet format, I just can't figure out how to read in the response.

Thank you

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computer guy · 2010-01-03 04:06

I think I have identified the problem.
By default the Easy Bluetooth module appears to be defaulting to transparent mode.

According to the manual "As the RBT-001 does not listen to commands, UART Break has to be used to tell the
device to leave the transparent mode"

I have tried

LOW TX
PAUSE 1000

AND

SEROUT TX, Baud, [noparse][[/noparse]$00,$00,$00,$00,$00,$00,$00,$00]

Before I try and send a command, from reading around these appear to be two different ways of sending a UART break signal.
Both of these have made no difference though.

Has anyone else got some ideas.

Thank you

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blittled · 2010-01-03 04:34

There is another post referring to this issue as well. It is http://forums.parallax.com/showthread.php?p=863561. I haven't had a chance to look into this myself so I would be interested in what you find out.

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Will work for Propeller parts!

computer guy · 2010-01-03 05:07

Thank you blittled. I had that link bookmarked after I found it earlier today.
It appears to be a huge problem with the module and both the datasheet for the BT chip itself and the Parallax manual for the Easy Bluetooth appear to have no helpful information.
Hopefuly when everyone gets back from holidays they will be able to help.

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computer guy · 2010-01-03 07:21

OK. Correct me if I am wrong but in command mode this

 SEROUT TX, Baud, [noparse][[/noparse]"Message"]

Shouldn't print "Message" on the Bluetooth serial port.

So by the fact that it is printing the above, I can safely assume that it isn't in command mode.

Therefore This:

' {$STAMP BS2}
' {$PBASIC 2.5}
RX PIN 2 'Receive Pin
TX PIN 0 'Transmit Pin
Baud CON 84 '9600 Baud
var1 VAR Byte
MAIN:
 LOW TX
 PAUSE 100
 HIGH TX
 PAUSE 100
 DEBUG "Sending message", CR
 SEROUT TX, Baud, [noparse][[/noparse]"Message"]
 GOTO MAIN

Isn't putting it into command mode as I expect it should from reading 4 Datasheets and 3 Manuals.

Plz, can anyone help me with this. This is part of a school project and is urgent.

Thank you

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computer guy · 2010-01-04 12:08

It would appear that this issue has been moved to "Basic Stamp". I would be happy with propeller code if it worked as I am intending to use it with the propeller.
I'm just using the BS2 to work out how to use it. Guess I can always request that it get moved back later, when it starts flooding with spin code.

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Easy Bluetooth Module (Need Help) Urgent!!

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