What do you mean by Code Portability.How can we make the code portable ?Discuss with respect to C
Showing posts with label WORK EXPERIENCE RELATED. Show all posts
Showing posts with label WORK EXPERIENCE RELATED. Show all posts
Monday, January 9, 2012
Tuesday, January 3, 2012
Bluetooth Links & Packets
Discuss transport links and packets transferred in Bluetooth communication
Useful Links:-
www.cs.hut.fi/~ctl/btpacket.pdf
Useful Links:-
www.cs.hut.fi/~ctl/btpacket.pdf
Monday, January 2, 2012
HFP vs HSP
HSP-------------------
A Bluetooth profile (mode) designed to enable a two-way wireless headset to be used with a Bluetooth phone.
Headset is one of the most common Bluetooth profiles. Nearly all phones support it, although some phones only support the very similar Handsfree profile (HFP), which can also be used for headsets.
Headset Profile supports simultaneous two-way (full-duplex) audio, but it does not support stereo audio.
HSP can be used with devices other than phones. For example, a Bluetooth headset could be used with a Bluetooth-enabled PC and VoIP software to place an Internet phone call.
HFP-------------------
A Bluetooth profile (mode) designed to enable a two-way wireless speaker-phone to be used with a Bluetooth phone.
Although it can be used with a desktop speaker-phone accessory, its most common use is with car kits. A Bluetooth car kit will use HFP to connect to a Bluetooth phone, allowing phone calls to take place via the car's audio system (or an installed speaker) while the phone stays safely in a pocket or purse.
HFP is one of the most common Bluetooth profiles. Nearly all phones support it, including ones that do not support Headset Profile (HSP). Since all modern Bluetooth headsets support both HSP and HFP, phones without HSP can still use Bluetooth headsets via HFP.
A Bluetooth profile (mode) designed to enable a two-way wireless headset to be used with a Bluetooth phone.
Headset is one of the most common Bluetooth profiles. Nearly all phones support it, although some phones only support the very similar Handsfree profile (HFP), which can also be used for headsets.
Headset Profile supports simultaneous two-way (full-duplex) audio, but it does not support stereo audio.
HSP can be used with devices other than phones. For example, a Bluetooth headset could be used with a Bluetooth-enabled PC and VoIP software to place an Internet phone call.
HFP-------------------
A Bluetooth profile (mode) designed to enable a two-way wireless speaker-phone to be used with a Bluetooth phone.
Although it can be used with a desktop speaker-phone accessory, its most common use is with car kits. A Bluetooth car kit will use HFP to connect to a Bluetooth phone, allowing phone calls to take place via the car's audio system (or an installed speaker) while the phone stays safely in a pocket or purse.
HFP is one of the most common Bluetooth profiles. Nearly all phones support it, including ones that do not support Headset Profile (HSP). Since all modern Bluetooth headsets support both HSP and HFP, phones without HSP can still use Bluetooth headsets via HFP.
Bluetooth Device Driver
Expalin details regardiong Bluetooth driver details as below
1.BT profile driver functions & structuures
2.BT profile driver IOCTLs
Useful Links:
http://msdn.microsoft.com/en-us/library/windows/hardware/ff536768(v=VS.85).aspx
1.BT profile driver functions & structuures
2.BT profile driver IOCTLs
Useful Links:
http://msdn.microsoft.com/en-us/library/windows/hardware/ff536768(v=VS.85).aspx
How Bluetooth Works
How Bluetooth devices are searched and connected ? Discuss the whole bluetooth communication process in detail as depicted below.
Scan for other Bluetooth devices
Query the local Bluetooth adapter for paired Bluetooth devices
Establish RFCOMM channels
Connect to other devices through service discovery
Transfer data to and from other devices
Manage multiple connections
Useful Links:-
http://developer.android.com/guide/topics/wireless/bluetooth.html
Useful Links:-
http://developer.android.com/guide/topics/wireless/bluetooth.html
Bluetooth Profiles
Discuss how Bluetooth profiles are implemnted in the stack and how different connections like audio gateway and data gateway are set ?
Useful Loinks:-
http://www.palowireless.com/infotooth/tutorial/profiles.asp
Useful Loinks:-
http://www.palowireless.com/infotooth/tutorial/profiles.asp
AT Commands
What are AT Commands & how we can be able to get information using these commands.
Useful Links:-
http://en.wikibooks.org/wiki/Serial_Programming/Modems_and_AT_Commands
http://www.developershome.com/sms/atCommandsIntro.asp
http://www.developer.nokia.com/Community/Wiki/AT_Commands
http://www.engineersgarage.com/tutorials/at-commands
Useful Links:-
http://en.wikibooks.org/wiki/Serial_Programming/Modems_and_AT_Commands
http://www.developershome.com/sms/atCommandsIntro.asp
http://www.developer.nokia.com/Community/Wiki/AT_Commands
http://www.engineersgarage.com/tutorials/at-commands
Friday, December 30, 2011
Wednesday, December 21, 2011
Friday, December 16, 2011
Bluetooth Protocol Stack
Discuss about Bluetooth Protocols and their implementation.
http://www.palowireless.com/bluearticles/stack.asp
http://en.wikipedia.org/wiki/Bluetooth_protocols
http://www.tutorial-reports.com/wireless/bluetooth/protocolstack.php
http://msdn.microsoft.com/en-us/library/ms890946.aspx
http://www.palowireless.com/bluearticles/stack.asp
http://en.wikipedia.org/wiki/Bluetooth_protocols
http://www.tutorial-reports.com/wireless/bluetooth/protocolstack.php
http://msdn.microsoft.com/en-us/library/ms890946.aspx
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