Interfacing Bluetooth USB Dongle with Microcontroller

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niket_304

Joined: 21 Dec 2005
Posts: 74

03 Jan 2007 18:09 usb to bluetooth serial mcu

Hey thats all about Hardware. But what about software?
You have to develop a complete driver to control Bluetooth USB Dongle i.e. we can call 'Bluetooth Stack'. So one need to study the entire protocol, communication process etc. and develop a code according to it. What do you say?

DDS

Joined: 12 May 2006
Posts: 40
Helped: 2
Location: Ukraine

06 Jan 2007 12:27 wt12 bluetooth pic

Hi,

Yes that's a right suspense but... As far as I'm concerned, we could not expect to develop a sophisticated driver for already modest microcontroller driven embedded host system.
At the very beginning, this topic is opened to provide cable-free communication possibility between embedded host/peripherals with using easily available and cheap Bluetooth USB dongles.
So, I think it would be sufficient serial protocol called as SPP (Bluetooth Serial Port Profile) unless used specific peripherals which having own embedded bluetooth subsystem(like GSM, PDA etc.)

Regards

niket_304

Joined: 21 Dec 2005
Posts: 74

06 Jan 2007 19:58 cheap bluetooth microcontroller

Ya that is true that we have to develop only a part of Bluetooth protocol stack. but there should be some way to communicate with bluetooth dongle. for e.g. like serial modem accepts AT commands etc. So do u have any idea about communication/commanding/controlling USB bluetooth dongle?
and yes, The question of USB hosting/driver software part is also hanging around. Is there any support for USB host controller coding?

seadolphine2000

Joined: 12 Apr 2005
Posts: 621
Helped: 39

06 Jan 2007 23:35 connect bluetooth to microcontroller

I found this code in the manual of the MikroBasic software. Please check page 271
It's an example for sending a sequence of numbers to the PC via the USB port.
I think we can modify it some how to connect the Bluetooth dongle instead of the PC.

I have a small question about the code written in this manual. The sequence of numbers is sent via USB cable to what.? What is the destination.? I mean how can I see the received sequence.?

Thanks for all your help.

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niket_304

Joined: 21 Dec 2005
Posts: 74

07 Jan 2007 10:26 avr bluetooth dongle

I think first step towards communication between USB Host and Dongle is

-to establish a USB communication between PC and Dongle independently.
i.e. first develop a VB code or C program to communicate with dongle without its own drivers (coz every dongle comes with BT driver and BT stack for windows by which we can easily use Dongles. this drivers are so userfriendly and flexible that we just have to click once and it establishes serial communication between dongle and PC which hides actual technicality of Bluetooth Stack for Windows) as well as using PC host USB driver codes.

-USB codes are easily available for PC. so we can move further to get familier with Dongle.
so we have to find/develop a small part of bluetooth stack for USB dongle and VB code to communicate PC with USB peripherals.

-then we can go for replacing PC with an embedded solution.
because we even dont know how to communicate with dongle and how to give commands to USB dongle so that appropriate bluetooth communication can be established between Mobile and Dongle.

What do you think??

I Thank you all for your co-operation and please be active and updating this topic.

dainis

Joined: 15 May 2001
Posts: 1451
Helped: 56

07 Jan 2007 16:31 bluetooth pic micro

Look for source code:
http://tuxmobil.org/bluetooth_linux.html

USB Devices
Quotation from ../linux/Documentation/usb/bluetooth.txt of kernel 2.4.5: "The USB Bluetooth driver supports any USB Bluetooth device. It currently works well with the Linux USB Bluetooth stack from Axis· (available at http://developer.axis.com/software/bluetooth/ ) and· has been rumored to work with other Linux USB Bluetooth stacks."

http://repair4laptop.org/notebook_bluetooth_selfmade.html
http://www.linux-usb.org/devices.html

niket_304

Joined: 21 Dec 2005
Posts: 74

07 Jan 2007 17:06 interface bluetooth to microcontroller

dainis,
Bluetooth stack for Linux is easily available every where. In fact whole project of Mobile-PC BT Communication is available which uses diffrent BT stacks for Linux. But what we are searching is BT stack for Windows, by which we can develop small program to test dongle in C or VB. coz I think most of us are aware and familier of VB/C ,windows and not of Linux. and instead of westing time to tackle with Linux its better that use Windows compatible driver.
One more advantage for Windows stack is it will be easy to migrate the driver/stack from Windows to Embedded controller device.

So do you(or anyone) have any idea about free Bluetooth Stack or related codes for WINDOWS?

dainis

Joined: 15 May 2001
Posts: 1451
Helped: 56

07 Jan 2007 22:43 microcontroller bluetooth

niket_304 wrote:

One more advantage for Windows stack is it will be easy to migrate the driver/stack from Windows to Embedded controller device.

So do you(or anyone) have any idea about free Bluetooth Stack or related codes for WINDOWS?

I do not have any Win BT drivers and stack source ....
How migration from binary Windos BT stack is easier than using Linux sources ???

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07 Jan 2007 22:43 Ads

RSABear

Joined: 18 Jul 2007
Posts: 3

07 Aug 2007 11:47 bluetooth dongle operational code mnemonics

This subject has gone a bit quiet for a while…

I am also interested in this topic and also not on an advanced enough level to know the complexity of DDS’s request.

I have purchased a USB Bluetooth Dongle in order to backup my source code from my Laptop to an old PC at home. These Bluetooth dongles are now cheaper than dirt. The manufacturer website is h**p://global.msi.com.tw and product is Star Key.

As I have recently progressed on the PIC and C learning path and moved from flashing lights and reading switches to getting RS232 to work, I was looking for the next natural progression down the path – wireless! I have ordered some low power data transceivers manufactured by radiometrics to experiment with initially, however this Bluetooth dongle changed matters.

I have search up to the last page on Google and I found many Bluetooth to RS232/USB devices from: Sparkfun, Blueradios, Mulitech, BlueSMiRF, BlueSy and even a Toothpick!

Hundreds of RS232 to Bluetooth dongles and RS232 cable replacement devices, but they are so expensive.

I know from this thread that the device driver/api layer might be the biggest problem.

I would like to do the following experiment when I get some time:

Establish simple serial communications between two PC’s running either Linux or Windows using Bluetooth as the communications layer. By this I mean setup the USB and Bluetooth drivers on each PC, pair the systems and enable a Serial Port Profile for each and then use Hyperterminal or sterm/xterm (whatever works on Linux) with a USB sniffer to have a look at the messages. Then see if I could replace the PC on one end with a USB PIC to emulate the PC over the Bluetooth serial communications link. The idea is to only look at the Serial Communications Part of the Bluetooth stack and not the complete Bluetooth implementation.

Is this even worth attempting?

Idea

microlab

Joined: 04 Mar 2006
Posts: 106
Helped: 3

09 Aug 2007 11:28 usb bluetooth dongle connect to pic microchip

hai all

this is quite a good topic
what will be range of these 10$ usb dongles?
i think this will work well at open space
but when it comes to the indoor applications,the range will reduce to the room size or a little more.
when we are concidering rf transmission,this attonation will be the main problem.
what could be the solution for this?

thanking you

ml

farzad farokhi

Joined: 06 Mar 2007
Posts: 6

13 Aug 2007 19:04 bluetooth dongle avr

Hi all ,
Can I Know , what's the meaning of "Dongle"?
Thanks in advance.

devendra_devgupta

Joined: 08 Apr 2007
Posts: 52
Helped: 1

14 Aug 2007 9:06 vinculum bluetooth dongle

Hi every one there is lot of things i have learned from this dicussions. But one thing i want to know why is Bluetooth modules are more costlier than USB bluetooth available.
Are USB bluetooth suitable for industrial applications??

farzad farokhi

Joined: 06 Mar 2007
Posts: 6

14 Aug 2007 17:32 bluetooth interfacing to microcontroller

Hi,
Yes , Bluetooth can suiable for Industrial applications. But not for far away distance.
aproximately 200meter .alse Bluetooth via usb can work.

devendra_devgupta

Joined: 08 Apr 2007
Posts: 52
Helped: 1

15 Aug 2007 4:44 interfacing of bluetooth with controller

Thanx farzad but my query was not regarding distance. USB dongle bluetooth devices available in computer shops work well under home enviornment but is this true for hazardous high temperature and humidity also.

niket_304

Joined: 21 Dec 2005
Posts: 74

14 Sep 2007 19:08 bluetooth hid microcontroller

@RSABear
Hey i think its a gr8 idea to start developin bt stack for windows platform...nd prob. wid small part of it...i.e. SPP....its really worth trying...let us know any progress or important matters regarding this......

bryanwizard

Joined: 28 Jul 2006
Posts: 119

20 Sep 2007 1:28 bluetooth microchip pic

Guys I already try using a bluetooth dongle interfacing in a PC. My project is electronic billboard via bluetooth. Which is PC based I done it, late 2006. It mostly programming basics and circuit analysis on how you sent data to the serial port.

Using a nokia cellphone, we have NOTES their. We can sent it thru bluetooth, and receive by bluetooth dongle in the PC. Notes can be converted so that we can sent routine to the port bit by bit.

rgds,

reyge

Joined: 23 Jan 2007
Posts: 76

20 Sep 2007 4:52 cheap bcm2045 pairing

Hi bryan!

Can you clarify your last post? Your bluetooth dongle is connected to the PC through USB, right? Then you send data from your nokia cellphone through bluetooth to the PC?

Thanks

feline694

Joined: 09 Oct 2007
Posts: 3

10 Oct 2007 14:32 shingadaddy

dear niket

would you mind to change your concept?
If not u can use the nRF24 which has built in MCU with Blue tooth.

let me know your plan

thanks for sharing

feline

nileshnesk

Joined: 24 Oct 2007
Posts: 1

24 Oct 2007 18:32 usb bluetooth dongle mcu

how can i interface 89c51 ic with bluetooth dongle?
please suggest me hard ware and software part.
you can send me information/data sheets/circuit diagrams/programs on my email id nileshnesk(at)gmail.com.
please help me this is very important for my academics.
thanking you.

Quote:

magician_is

Joined: 15 Jan 2007
Posts: 4

26 Oct 2007 7:29 bluetooth dongle to microcontroller

wow great schematic diagrams!!! i think i might use that for my thesis

dsPIC24F

Joined: 04 Oct 2007
Posts: 66
Helped: 14

27 Oct 2007 2:44 bluetooth dongle and microcontroller

any other choice rather than the Max3421E?

xirix

Joined: 26 Jun 2001
Posts: 156
Helped: 1
Location: Romania

30 Oct 2007 15:32 microcontroller usb bluetooth

What about ISP1* chips from NXP? Especially ISP1160.

RONALED

Joined: 20 Jan 2006
Posts: 8

25 Nov 2007 8:01 pic+bluetootrh usb

HELLO GIVE A CIRCUIT IMPLEMENTATION PLEASE...

mmnetmohanedaboard

Joined: 07 Dec 2007
Posts: 2
Location: Coimbatore

07 Dec 2007 10:56 bt dongle mcu

hai i also working on that interfacing broadcom Dongle to PIC 18F4550..
if any details how the dongle communicates with the USB
we can develop that in micro -- need to study HCI Commands

Added after 22 minutes:

here is the hci spec from bluetooth.org

i think many of the USB dongles are working with BCM2045 i got it from local shop here is the datasheet..
and HCI standard Manual

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mmnetmohanedaboard

Joined: 07 Dec 2007
Posts: 2
Location: Coimbatore

08 Dec 2007 12:01 bluetooth usb 2.0 micro controller

hai guys

check out this link

http://www.national.com/pf/LM/LMX9838.html

Complete Bluetooth 2.0 Stack including

• Baseband and Link Manager
• Protocols: L2CAP, RFCOMM, SDP
• Profiles: GAP, SDAP, SPP
• High Integration: Includes Antenna, crystal, EEPROM, LDO
• Supporting up to 7 active Bluetooth data links and 1 active SCO link
• Class 2 operation
• UART Command/Data port speed up to 921.6kbits/s
• Advanced Audio Interface for external PCM codec
• Better than -80dBm input sensitivity
• FCC certified: FCC ID: ED9LMX9838
• IC certified: IC-1520A-LMX9838
• CE Self certified
• Bluetooth SIG QD ID: B012394
• Compact Size: 10mm x 17mm x 2.0mm

then what else you need to interface with a microcontroller...

let us try out it....
Very Happy

glenjoy

Joined: 01 Jan 2004
Posts: 1028
Helped: 47
Location: Philippines

09 Dec 2007 2:25 bluetooth usb dongle code for microcontroller

Has anyone finished this app? I think it is hard to interface USB devices to micros, it jus sucks.

Get an RS232 bluetooth dongle, much better.

agk.ganesh

Joined: 17 Dec 2007
Posts: 9

17 Dec 2007 18:57 bluetooth hci command send to mcu

Veru useful thread... Smile

mathwiz

Joined: 02 Apr 2008
Posts: 1

02 Apr 2008 17:02 bluetooth dongle interface to microcontroller

hi
i m working on a project where i m interfacing a MCU with bluetooth.
i will send some commands from my bluetooth enabled laptop and the bluetooth dongle fitted on MCU side(its USBport ) will receive d commands n will work.

just d whole idea of connecting dongle with laptop n sending commands is nt clickin??
pls help
wat kind of programming is needed?
and how will the mnemonics be converted into serial bits by the dongle to be understood by the MCU??
pls help
thanks in advance

luismarcilio

Joined: 03 Apr 2008
Posts: 1

03 Apr 2008 14:58 usb demo board bluetooth

Hi people.
Did someone make it?
I'm trying exactly the same thing for my graduation project.
I have two options:
USB<->serial<->low cost microprocessor or
low cost bt dongle<->usb host controller<->microprocessor with bluetooth stack.

I will try the second one. If someone already made something like this please share the secrets.

Geek regards.

Luis Marcilio