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Questions tagged [rfcomm]

Radio frequency communication - the Bluetooth protocol. RFCOMM is a serial port emulation over Bluetooth. It provides a simple reliable data stream over Bluetooth, similar to RS232/TCP.

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Can't redirect rfcomm output to a file

I would like to redirect the output of rfcomm to a file in bash like $ rfcomm watch hci0 > rfcomm.log & or $ rfcomm watch hci0 > rfcomm.log 2>&1 & However rfcomm.log remains desparately empty. Why?
Buddyshot
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How to add rfcomm and genericAttributeProfile device capabilities to Package.appxmanifest in Windows 8.1.

I need to support multiple devices including both serial and BLE. When i add the following code to Package.appxmanifest file, i get an error Unable to activate Windows Store app 'blah.blah_blah!App'. The activation request failed with error…
Umer Jamal
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Developing Bluetooth App For Raspberry Pi3 on Win IOT

I am new at developing softwares for Windows IOT. I have information about .Net 3.5 and 4. When I start to develop for Win IOT, I saw that lots of things have changed. There are a lot of new words async, await, Task etc. Now I want to read and write…
MIrchhh
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Does RFCOMM use threeway handshake?

I have a task right now to evaluate the RTT of a bluetooth communication on android, however since L2CAP is no longer supported on android I have to calculate the RTT using RFCOMM, which to my understanding is basically a reliable implementation…
Ali Elgazar
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BlueZ which layer get reason of Bluetooth disconnection

I am using BlueZ stack for Bluetooth connection between Smart-phone(AG-Audio Gateway) and Embedded board(HF-Handsfree). On which layer of Bluez ( HCI, L2CAP, RFCOMM) we will get reason of Bluetooth disconnection. So we can differentiate following…
Hari
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Insecure rfcomm connection in Python

I would like to establish a bluetooth connection from an android device to a Raspberry Pi without pairing. The language used in RPi is Python. I am connecting using createInsecureRfcommSocketToServiceRecord from android. However the connection is…
Pool
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Pybluez RFCOMM server on Linux no advertisable service

I am trying to run a very simple bluetooth server on Raspbian Linux. If it makes any difference I am using a Raspberry Pi 3's bluetooth adapter as opposed to a dongle. from bluetooth import * server_sock=BluetoothSocket( RFCOMM…
user3781314
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Android Bluetooth connection using createInsecureRfcommSocketToServiceRecord without MAC address

I am creating an application for communicating Android mobile devices with Bluetooth beacons. I have successfully achieved this between one beacon (which acts as a client) and one android mobile device (acts as the server, listening for the…
Pool
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Bluetooth data transmission velocity issue

GoodEvening everyone, I'm trying to communicate between Arduino lilypad and raspberry Pi3B. I'm able to send and receive data but the communication is really slow!!! I send a character from Rasp to arduino, which responds sending back a package of…
Dario Bortolotti
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Using Bluez/Linux, can I run a daemon broadcasting BLE ibeacons and be connectable using RFCOMM simultaneously?

As stated in the title, can both be ran simultaneously or is a second adapter required? For example, can one adapter run both BLE and BT classic at the same time - the BLE beacon broadcasts the MAC for opportunistic clients to connect to using…
mcdoomington
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How to make multiple bluetooth connections in android

I have been trying to connect multiple android phones to my app using bluetooth multiple connections concurrenlty. Have followed the solution of a chatting app shared on android samples for bluetooth. But I am able to only connect my phone to only…
Shahnawaz Jafri
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HC-05 bluetooth module and android communication

I need to establish communication between android application and HC05 bluetooth module.I searched internet found about rfcomm based bluetooth communication. Is rfcomm based communication is the best method ? Can any one provide links for sample…
SP_
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Access bluetooth RFCOMM through android terminal

I would like to access to RFCOMM to set up a bluetooth virtual serial port on my Android device using the terminal. I do have root permissions on my android device. When I type "rfcomm" in the terminal, I receive a message saying "rfcomm: not…
Francesco
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Error while connecting HC-05 bluetooth module with python via bluetooth

I have been trying to connect my hc 05 bt module with my laptop and to achieve a communication with Idle. At first i connected my bt device manually from laptop's bluetooth settings and then I was able to get the module's bt address by using the…
NISHIT KHARA
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Unable to read from /dev/rfcomm

I am trying to connect my target to mobile device through blue-tooth SPP profile. Once bluetooth connection is up, request is made to create rfcomm channel to communicate. output of ls -all /dev/rfcomm0 crw-rw-rw- 1 root dialout 216, 0…
Daemon
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