rfcomm ?

Lost User

I am looking for help to implement / test rfcomm - on Ubuntu Description: Ubuntu 22.04.4 LTS When I type rfcomm -a I get this response

nov25-1@nov251-desktop:~$ rfcomm --a
nov25-1@nov251-desktop:~$

When I type

rfcomm -h I get this

nov25-1@nov251-desktop:~$ rfcomm --h
RFCOMM configuration utility ver 5.64
Usage:
rfcomm [options] Options:
-i, --device [hciX|bdaddr] Local HCI device or BD Address
-h, --help Display help
-r, --raw Switch TTY into raw mode
-A, --auth Enable authentication
-E, --encrypt Enable encryption
-S, --secure Secure connection
-C, --central Become the central of a piconet
-L, --linger [seconds] Set linger timeout
-a Show all devices (default)

Commands:
bind [channel] Bind device
release Release device
show Show device
connect [channel] Connect device
listen [channel [cmd]] Listen
watch [channel [cmd]] Watch

nov25-1@nov251-desktop:~$

I am using this link Ubuntu Manpage: rfcomm - RFCOMM configuration utility[^] Any help would be greatly appreciated Thanks

jschell

Salvatore Terress wrote:

rfcomm --a

That has two dashes.

Lost User

Make no differece - two -- or one - and what does "default" do ? should then rfcomm == rfcomm -a

trønderen

Which devices have you configured? If you haven't configured any, what would you expect when asking for a list of configured devices?

Religious freedom is the freedom to say that two plus two make five.

Lost User

Well according to rfcomm you do not have any devices configured.

Lost User

I am not blaming on anybody, but on MYSELF there is no English command in rfcomm man to "configure" however there is "bind" which to me means something likes " to associate (with) " so one has to guess to at least select "device" and optionally more... actually to go back to Unix - "no response / no reply is SUCCESS" so when "rfcomm" - used as default, no options specified, and returns NOTHING is really telling NOTHING Lesson learn - case closed

trønderen

Are you sure that you know enough about Bluetooth to handle it? I mean, treating "bind" as some new, unknown concept suggests that you do not know the first thing about Bluetooth. You will not be able to configure a device that you you don't have the slightest clue about. First thing in configuring a Bluetooth device is to learn what Bluetooth is, and its architecture.

Religious freedom is the freedom to say that two plus two make five.

Peter_in_2780

Yeah they over-abbreviated the command. Should have spelled it rtfmcomm.

Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012