Arch Linux

r0bbit

Member

Registered: 2015-07-07

Posts: 5

rfcomm asks for dev parameter. bug?

Hi. I'm trying to connect to a bluetooth uart device. i created the file in /etc/bluetooth/rfcomm.conf, and when i try to bind to my device, it gives me this:

[andrei@storm dev]$ sudo rfcomm bind rfcomm0
Missing dev parameter

so i looked at the source code and it prints this message when argc < 2. and it's clearly not...

i then typed

[andrei@storm dev]$ sudo rfcomm connect rfcomm0 98:D3:33:80:54:0C
Can't connect RFCOMM socket: No route to host

so no route to host for minicom!
i can't get around it, i don't understand if i'm doing something wrong or it's the program that doesn't work correctly...

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,349

Re: rfcomm asks for dev parameter. bug?

I allways have to turn to this... http://unix.stackexchange.com/questions … t-on-linux

Are you trying to connect to your Arch box from another device, or are you trying to attach from your Arch box to another device....

I am going to go drive across the greater Los Angeles metropolitan area now, so I'll pick this back up in a couple hours

---

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Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
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r0bbit

Member

Registered: 2015-07-07

Posts: 5

Re: rfcomm asks for dev parameter. bug?

Thanks for replying. I'm at university right now, i'll check it out tonight.
Anyway i'm trying to attach my arch to the other device, that actually is an HC-06 connected to arduino uno, to send to it commands to be interpreted by the microcontroller.

UPDATE:
thank you for suggestion but it doesn't really apply to my situation, since i have to send command from, and not to, my arch system.

I managed to get to the serial terminal /dev/rfcomm0, but it seems like the hc-06 device doesn't do anything. the led on it should stop blinking as i open rfcomm0, and so it doesn't. plus, it does not respond to my commands (it should light a led on the breadboard when i type "A").
i use minicom to open rfcomm0, and the device is paired with bluetoothctl (not connected though).

UPDATE 2:
done! it works! i don't really know why, sincerely... this time i modprobed rfcomm though, maybe that was the problem? the command "worked" the same even before (i mean, it was giving me the same output).
well, after 3 days, i finally made it work!

Last edited by r0bbit (2015-11-05 22:53:03)