Serial Port Profile (SPP) This profile is based on ETSI 07.10 and the RFCOMM protocol. It emulates a serial cable to provide a simple substitute for existing RS-232, including the familiar control signals. It is the basis for DUN, FAX, HSP and AVRCP. SPP maximum payload capacity is 128 bytes. Essentially, the Serial Port Profile defines the protocols and procedures that shall be used by devices using Bluetooth for RS232 (or similar) serial cable emulation.The scenario covered by this profile deals with legacy applications using Bluetooth as a cable replacement, through a virtual serial port abstraction (which in itself is operating system-dependent). After Connecting the SPP profile, you can send AT commands or any other messages to the Head Unit (or any remote device) using the virtual serial port created by SPP the connection. The Head Unit (or other remote device unit which has the same capabilities) reads the commands or messages and responds.
The Bluetooth® Serial Port Profile (SPP) of the ClarinoxBlue protocol stack with Bluetooth® Classic runs on the Renesas PE-HMI1 Kit to connect and transfer bidirectional data. The ClarinoxBlue stack includes a built-in protocol analyzer for simplified debugging that allows custom application commands to be sent using the DLL-based plug-in interface. Serial Port Profile (SPP) If you're replacing a serial communication interface (like RS-232 or a UART) with Bluetooth, SPP is the profile for you. SPP is great for sending bursts of data between two devices. It's is one of the more fundamental Bluetooth profiles (Bluetooth's original purpose was to.
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I am trying to use Bluetooth SPP to communicate over it. In some Android phones, SPP profile is not activated. I faced the problem in the application that SPP was not activated and so the connection could not be established over bluetooth and when I started another app that is 3g hotspot which I think activates SPP and I was able to connect over bluetooth in my app.
So, how can we actually activate SPP profile of bluetooth in Android devices? And does all the android devices has SPP profile?
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3 Answers
![Serial Port Profile Serial Port Profile](/uploads/1/2/4/9/124915021/528870774.jpg)
In developer.android.com BluetoothSocket:
The most common type of Bluetooth socket is RFCOMM, which is the type supported by the Android APIs. RFCOMM is a connection-oriented, streaming transport over Bluetooth. It is also known as the Serial Port Profile (SPP).
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This might answer your question .http://source.android.com/porting/bluetooth.html#androidBluetoothFeatures
Serial Port Profile (spp) Over Bluetooth
SPP (or ability to use Java API's to establish RFCOMM channels) is available from Android (2.0/2.1) release (Eclair) onwards
On the Android phone you will probably need to run an application that initiates the service over SPP.**
public BluetoothServerSocket listenUsingRfcommWithServiceRecord (String name, UUID uuid)
** API can be used to create a service with specified UUID to listen, Doing this should make this service visible to other devices which can then connect to it.
Dennis Mathews![Serial port profile c# Serial port profile c#](/uploads/1/2/4/9/124915021/854136778.jpg)
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Serial Port Profile Specification
I just called Samsung help regarding bluetooth SPP on an S8+ phone. They tell me wait for Android Oreo as it isn't available till then. My previous Sony Xperia used Ntrip Client to talk to an external Geneq GPS to receive corrected coordinates and worked really well. Seems we went backwards somewhere?Ntrip client on the phone collects an internet data stream of GPS corrections every five seconds and sends these to the GPS. The GPS uses the corrections and sends back adjusted coordinates to the phone to use in any application.I would appreciate someone brighter than me pointing out a quick fix I just load and run to bring back this functionality.
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