Reading serial spp Bluetooth device
I have A device that sends a message over blutooth (spp) once a second and i want to read the device and record the output with out missing messages. problem is it seems like the timing gets off and i miss messages or get half messages sometimes. cant find a way to read consitant. The device does not seem to have a termination char being sent so its hard to find end of message and the number of bytes sent can vary. Any ideas???
thanks
brian
Attachments:
read example.vi 23 KB
Is there anything in the message stream that tells you how long a message is? Such as the first 1 or 2 or 4 bytes saying how many bytes there are to read? If so, read that many bytes, then immediately decode that to determine how many more bytes to read (thus getting rid of the the bytes at port method).
If not, how do you know where one message ends and another message begins?
You can read conitnuously and build your message stream up in a string shift register. Keep looking at the string and once you get a complete message, delete that out and process it, leaving the remaining bytes in the shift register.
Similar Messages
-
SPP Bluetooth devices not listed in Mac mini
Hi,
We're developiong Bluetooth supported hardware. the hardware supports bith SPP & iAP.
Works fine on any iOS device (iAP protocol)
Works fine (SPP) on an old Mac mini machine.
Works fine (SPP) on any android device.
But, on a new Mac mini machine the device won't even get listed in the Bluetooth devices list.
Old Mac mini (Device is working perfect):
OS X 10.6.8
1.83 GHz
Intel Core 2 Due
New mac mini (Device is not detected):
OS X 10.8.4
2.3 GHz
Intel Core i5
Any assiatance will be great,
Thanks,
Daninterface GigabitEthernet5/0/24
switchport access vlan 110
switchport mode access
switchport voice vlan 250
srr-queue bandwidth share 1 30 35 5
priority-queue out
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
spanning-tree portfast
service-policy input AUTOQOS-SRND4-CISCOPHONE-POLICY
end
I condensed one of the ports as follows, but it's still in the game flapping:
interface GigabitEthernet5/0/24
switchport access vlan 110
switchport mode access
spanning-tree portfast -
My bluetooth system can't read or detect my bluetooth device, any help?
My bluetooth system can't read or detect my bluetooth device, any help?
What bluetooth system?
What bluetooth device?
Please explain -
Having trouble opening connections and reading from Bluetooth devices.
Hello,
As the title states, I am having trouble opening connections and reading data from a Bluetooth device. We are using a PDA to communicate with LabVIEW. First, the Bluetooth Open Connection VI displays a timeout error half of the time. Second, when it does open, it does not read what the PDA is sending. Third, if it does allow an open connection, it will not do it a second time unless the devices are turned off.
I also have another related question. I am using a Linksys Bluetooth USB adapter, and the driver is proprietary. Labview requires the use of a Microsoft driver, and we are having problems going back and forth between the drivers. What Bluetooth receiver would you suggest using? The reason I ask is the fact that you have Bluetooth examples of client VI's. Therefore, you must use a similar device. Thank you for your time.
-JonHi Jon,
I'm not sure what Bluetooth receivers were used to verify the functionality of the VIs. However, I still want to help you solve your issue. Please make sure that you are running the shipping examples and let me know what version of LabVIEW, what PC OS and what PDA OS you are using. Does the Microsoft driver work for your Bluetooth receiver if you uninstall the Linksys driver?
With your answers I'll do my best to help you out.
- Philip Courtois, Thinkbot Solutions -
Bluetooth Device doesn't Read Input-Device Timeout Configuration
I'm running Bluez-4.99 with a Bluetooth Input Device.
I want the device to disconnect after a Timeout.
There is an IdleTimeout=X setting in /etc/bluetooth/input.conf.
But the device won't timeout and remains connected. So this means the device isn't being appropriately recognised as an Input Device it would seem. Hence the config file isn't being read.
Does anyone have any experience of this to shed some light as to a solution??Hello Cozz ,
Thank you for your questions.
Have you tried entering the PIN of 0000? This is usually a standard PIN when connecting a Bluetooth device unless that PIN has been changed.
Let us know if this works.
-SR
Come follow your BlackBerry Technical Team on twitter! @BlackBerryHelp
Be sure to click Kudos! for those who have helped you.Click Solution? for posts that have solved your issue(s)! -
I want to sync my Blackberry 9320 via Bluetooth to a Windows 7 Professional machine using a Bluetooth adapter. Syncing using USB cable works fine.
I can Bluetooth pair with the 9320 and also send / receive files to /from the Windows 7 machine. Fantastic !
HOWEVER, Blackberry Device Manager can not find the 9320 Bluetooth device (even Bluetooth is switched on and set to Discoverable) - see screen shots below.
By the way I have already tried (amongst other things) “Manually Install RIM Virtual Serial Ports in Microsoft® Windows® 7” on http://www.youtube.com/watch?v=gK2n5dHxGHI Unfortunately, this does now work - the drivers do load up OK and remove the warning signs when view in Windows Device Manager, but Blackberry Device Manager still can't see my 9320.
Please help !I have the exact same problem with my 9360. I have also tried all the fixes I could find on the Internet with no luck. I have posted a request as well. I will let you know if I find a solution. What gets me though is that this appears to be a long standing issue with no obvious fix! Best of luck.
-
How to communicate with third party bluetooth device using LAbVIEW
Hi
I am trying to communicate with a third party bluetooth device using LabVIEW, I am using a bluetooth dongle. I am able to discover the device and able to open the connection by specifying the service as serial port. But after that when I am trying to read and write data between LabVIEW and the bluetooth device (using Bluetooth Read & Bluetooth Write functions) its not happening.
Dose anybody faced same kind of issue if so kindly guide me, this is first time I am using Blutooth protocol.
Regards
VisumanHi,
I am able to talk with bluetooth / serial devices by using Labview protocol (not Wii dll). These are steps:
Discover the bluetooth device in range (Bluetooth dicover.vi)
Get the address of the device
Pass device address to Bluetooth RFCOMM Service Discovery.vi to get service list
Pass channel and uuid to Bluetooth open connection
After that do write and read (Bluetooth Write / Bluetooth read).
I hope it works for you.
Take care
tp
-
Safe Boot , Serial ATAPI Initial device configuration did not complete successfully.2
clean install OS Snow Leopard and up to 10.6.8.
I install Mavericks & restart computer,
it goes to white screen with Apple Logo and spinny thing at bottom, then after about 2 minutes the Apple Logo changes to a grey No Entry sign.
Now I use safe boot, the message is
" Serial ATAPI Initial device configuration did not complete successfully.(failedCommandInfo = 0x1)
Still waitting for root device"
I can use Snow Leopard DVD startup & chooen 10.6.8 (Macintosh HD) start Disk.
What happen to intall Mavericks of my case? Please HELP! THANKS!
Mac Pro, Mac OS X (10.6.8)If you want to preserve the data on the boot drive, and it's not already backed up, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data, you can skip this step.
There are several ways to back up a Mac that is not fully functional. You need an external hard drive to hold the backup data.
1. Boot from the Recovery partition or from a local Time Machine backup volume (option key at startup.) Launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.”
2. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
3. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data. -
W530 - Bluetooth device not connected - Windows 8
I recently upgraded to Windows 8. Bluetooth was working fine. Today I tried to use Bluetooth only to find that it doesn't work anymore.
In the Windows 8 Device Manager (Win + X | M) the Bluetooth doesn't show up anymore unless I show hidden devices (View | Show hidden devices).
The message on the properties of every Bluetooth device is:
"Currently, this hardware device is not connected to the computer. (Code 45)
To fix this problem, reconnect this hardware device to the computer."
This seems to only apply to Bluetooth. WIFI is working fine.
Does anyone have any ideas what's wrong?I have been trying to "Connect" to my laptop (running Windows 8) with an external bluetooth device (HC-05). I have tried allowing the HC-05 to me the master and initiate the connect and vice versa. I can "pair" the two devices but I am unable to "connect" Sometimes I will look in the device Manager and see that "COM5" and "COM6" ports appear under the "ports" listing. COM5 is shown to be the incoming and COM 6 is shown to be outgoing for the bluetooth adatper. When I open a serial term, the connection fails. Then when i check the COM port proerties, I see the ERROR 45. I checked the drivers and it says there are non installed. I open the Bluetooth USB Module (under Bluetooth in Device Manager) and checked it's driver. The message says they are up to date.
Thoughts?
What is the best way to update my BIOS? Do you think I am mising drivers for these (what apear to be "virtual") ports? -
I have a request from a couple of different customers to have an iOS device connect to a product that my company has produced for many years. The standard interface to this device is either through a serial port or Bluetooth (it can be either serial over Bluetooth or OBEX over Bluetooth). I have been attempting to contact someone at Apple to discuss this issue. I know that the current iOS does not support RFCOMM or OBEX on its Bluetooth stack (which seems to make this issue much more difficult). Any help is appreciated.
BT & Accessories -- All Bluetooth accessory developers must go through the Made for iPod program. Once you have an MFI device you can then talk to it via the ExternalAccessory framework.
<http://developer.apple.com/ipod/>
You'll have to go through the MFI folks to get this ball rolling. Their contact address is <[email protected]> -
Paired,trusted Bluetooth device - always asks for PIN
Hi guys,
I'm working on application that needs to connect to Bluetooth device (Zephyr HxM - it's a heart rate monitor) using SPP profile (this is the only profile that device supports). First I go into Bluetooth setting, I search for the device, add it, pair (enter PIN...). After that I set it as trusted (Trusted = Yes).
Inside my application I use BluetoothSerialPort classes to connect to device and read incoming data. This works perfectly fine. The problem is, every time I open a connection (so this happens once per application launch), BB prompts me to enter PIN and pairs the device. This happens every single time, despite the fact that I paired the device before and set it as trusted. If I pair Bluetooth headset - everything works fine. Am I missing something, or is this expected behavior. Could anyone advice?
Thanks and have a happy new year,
michalHello bfrasure,
It is very convenient to be able to use the trusted devices feature on your previous phone. This is a software for Motorola devices to allow the phone connect to trusted Bluetooth devices. At this time, this is not available with the iPhone, however, there may be third party applications that function similar to the trusted devices feature. If you decide to download a third party application, please be sure to read reviews to understand how it may affect your device.
AndreaS_VZW
Follow us on Twitter @VZWSupport -
No Bluetooth Device found after BIOS Update
Product Name and No.: HP dv6516tx
Operating System: Windows XP
Error Message: No Bluetooth device found
Changes Made: Updated BIOS to most recent version F. 5A
System Information:
OS Name Microsoft Windows XP Professional
Version 5.1.2600 Service Pack 3 Build 2600
OS Manufacturer Microsoft Corporation
System Name UDAYMITTAL-PC
System Manufacturer Hewlett-Packard
System Model HP Pavilion dv6500 Notebook PC
System Type X86-based PC
Processor x86 Family 6 Model 15 Stepping 13 GenuineIntel ~1496 Mhz
BIOS Version/Date Hewlett-Packard F.5A, 3/22/2010
SMBIOS Version 2.4
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "5.1.2600.5687 (xpsp_sp3_qfe.080930-1426)"
User Name UDAYMITTAL-PC\Uday Mittal
Time Zone India Standard Time
Total Physical Memory 4,096.00 MB
Available Physical Memory 2.23 GB
Total Virtual Memory 2.00 GB
Available Virtual Memory 1.96 GB
Page File Space 4.83 GB
Page File C:\pagefile.sys
Problem Description:
Yesterday I updated my laptop's BIOS to F 5A - latest available on HP Website. Since then I have lost the bluetooth functionality, which was wroking just fine prior to the update. Now the system doesn't find a bluetooth device.
What I have already done:
1. Switched back to previous versions of BIOS (available on HP Website coz I didn't note the BIOS version before I updated it). - That didn't work.
2. Reseated the wireless card - Didn't work.
3. Manually checked the connection of bluetooth module to the motherboard - Connection was fine but it still didn't work.
4. Uninstalled the bluetooth driver and reinstalled it (HP integrated module WIDCOM) - still didn't work
5. Installed HP Wireless Agent - Didn't work
6. Installed HP Integrated module driver along with HP Wireless Agent - Didn't work
7. Installed Ubuntu to check if its recognizing the device - Even its not recognizing the device which it used to do earlier.
8. Sadly there's no BIOS setting in Setup which I can change to correct the bluetooth behaviour (Phoenix BIOS with limited interface).
After all the research, I am posting this because I am unable to find a sloution to this problem on my own. I request the members to please help.
UdayI got the bluetooth working. Had to dismantle the laptop and found that a small switch was loose.
-
How do I upload the contacts from my iPhone 5S to the Bluetooth device on my Toyota RAV4? The car manual says to consult the phone's Bluetooth instruction manual, but I don't have a manual for that.
That is very strange... I wonder if it has something to do with the firmware or some sort of error. I haven't ran into this but at the shop I work at I've ran into several firmware errors on iPhone 4 all the way through the 5s. Maybe its something as simple as putting a different part of the code into iTunes... I know you can something of this extent. I would look up error 1669, I know you have tried a number of things but look it up on the forum and see what fixes are available so that you may be able to restore it properly without all this garbage you are running into. Just a thought for you.
-
Why does the on-screen keyboard disappear once a Bluetooth device has been attached?
Once I've connected a bluetooth device to my ipad 2, the on-screen keyboard disappears and doesn't return until I re-start the ipad. I've tried this with both a bluetooth keyboard, as well as with a bluetooth pedal, which will do page up, page down, right and left arrows, etc.
Reset your phone , you wont lose anything. Hold the home and off button down until the apple symbol comes up.
-
Voicemail access number deactivated bluetooth device
Using my iPhone 4, I can gain access to my voicemail by directly dialing my carrier access code (i.e. *138 in my case) through the keypad AND listen through my bluetooth device. But when using the "Voicemail" button (leftmost docked button), I can still access my voice mailbox BUT can no longer listen through my bluebooth device. Strange! Is there anyway I can change the preset access code stored under the "Voicemail" button?
if it is the iPhone 4, then *5005*86*xxxxx# where xxx is the nmber you want to programme should work...
but 4S and 5, unknown... anyone?
Maybe you are looking for
-
I want to change my icloud id on my iPhone, but it won't let me now that i have upgraded. I no longer have the password and the problem is It is using an old id which the email isn't valid and the security question does not think my birthday is vali
-
FF works on startup but will not open after closing until I reboot.
Until today everything okay. This evening tried to re-open Firefox and it would not. Rebooted computer & Firefox opened OK but after I closed it an tried to reopen, it would not start. Now it appears that Firefox will only open on a fresh restart of
-
Hi, I'm not able to disable a button that I added in the toolbar of an alv tree. Here is a piece of my code Add_Button data: lr_functions type ref to cl_salv_functions_tree. lr_functions = mr_tree->get_functions( ). lr_functions->add_fu
-
Upload .txt file into Database Table
Hi, I was wondering if someone could please point me in the right direction. I've been looking around the forum but can't find anything to help me achieve the following. I would like to be able to upload a .txt file using a webpage. Then store the in
-
Execute DOS command inside java
I have a java program that reads each new user from an inputfile and writes that same user to an output file. The program works fine and is shown below: import java.io.*; public class FileStreamsTest { public static void main(String[] args) { try { F