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Top Forums Shell Programming and Scripting Getting RSSI Vaule from shell Post 302975498 by Reficul on Tuesday 14th of June 2016 08:37:37 AM
Old 06-14-2016
Getting RSSI Vaule from shell

'm trying to get the TxPower(RSSI) Value of an iBeacon (BEACONinside, ModelNo. B0001-A) and I'm struggling to get this value into a Python-, C- or Shellscript. I looked through many Tutorials and Stackoverflow Questions, but (since BLE is quiet new) I'm not able to find anything to start with.

I'm able to get the data on the commandline with

Code:
sudo hcidump -a | egrep 'RSSI|bdaddr'

But I'm getting also the RSSI value of an BLE-device with status 'random', and no further information for it. My knowledge of regular expressions is pretty limited and so i don't know how i can get only the Data from the device I want.

And as said at the top i would like to get this information into a script so I can use it for further actions.

Here is the output of the hcidump:

Code:
  bdaddr 20:C3:8F: D1:0E:B1 (Public)
  RSSI: -28
  bdaddr 20:C3:8F: D1:0E:B1 (Public)
  RSSI: -28
  bdaddr 20:C3:8F: D1:0E:B1 (Public)
  RSSI: -31
  bdaddr 20:C3:8F: D1:0E:B1 (Public)
  RSSI: -32
  bdaddr 20:C3:8F: D1:0E:B1 (Public)
  RSSI: -28
  bdaddr 20:C3:8F: D1:0E:B1 (Public)
  RSSI: -28
  bdaddr DD:45:C9: 26:61:51 (Random)
  RSSI: -57
  bdaddr DD:45:C9: 26:61:51 (Random)
  RSSI: -60
  bdaddr 20:C3:8F: D1:0E:B1 (Public)
  RSSI: -29

I know the bdaddr of the devices i want to scan for. so I would like to get only the RSSI for these devices.

I already thought of awk, sed and regex, but my knowledge of these thinks are very limited. could someone give me a hint. Or tell me that I'm completly on the wrong road and should it do it differently and how?

thanks and best regards
Adrian
 

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IDLE(1) 						      General Commands Manual							   IDLE(1)

NAME
IDLE - An Integrated DeveLopment Environment for Python SYNTAX
idle [ -dins ] [ -t title ] [ file ...] idle [ -dins ] [ -t title ] ( -c cmd | -r file ) [ arg ...] idle [ -dins ] [ -t title ] - [ arg ...] DESCRIPTION
This manual page documents briefly the idle command. This manual page was written for Debian because the original program does not have a manual page. For more information, refer to IDLE's help menu. IDLE is an Integrated DeveLopment Environment for Python. IDLE is based on Tkinter, Python's bindings to the Tk widget set. Features are 100% pure Python, multi-windows with multiple undo and Python colorizing, a Python shell window subclass, a debugger. IDLE is cross-plat- form, i.e. it works on all platforms where Tk is installed. OPTIONS
-h Print this help message and exit. -n Run IDLE without a subprocess (see Help/IDLE Help for details). The following options will override the IDLE 'settings' configuration: -e Open an edit window. -i Open a shell window. The following options imply -i and will open a shell: -c cmd Run the command in a shell, or -r file Run script from file. -d Enable the debugger. -s Run $IDLESTARTUP or $PYTHONSTARTUP before anything else. -t title Set title of shell window. A default edit window will be bypassed when -c, -r, or - are used. [arg]* and [file]* are passed to the command (-c) or script (-r) in sys.argv[1:]. EXAMPLES
idle Open an edit window or shell depending on IDLE's configuration. idle foo.py foobar.py Edit the files, also open a shell if configured to start with shell. idle -est "Baz" foo.py Run $IDLESTARTUP or $PYTHONSTARTUP, edit foo.py, and open a shell window with the title "Baz". idle -c "import sys; print sys.argv" "foo" Open a shell window and run the command, passing "-c" in sys.argv[0] and "foo" in sys.argv[1]. idle -d -s -r foo.py "Hello World" Open a shell window, run a startup script, enable the debugger, and run foo.py, passing "foo.py" in sys.argv[0] and "Hello World" in sys.argv[1]. echo "import sys; print sys.argv" | idle - "foobar" Open a shell window, run the script piped in, passing '' in sys.argv[0] and "foobar" in sys.argv[1]. SEE ALSO
python(1). AUTHORS
Various. 21 September 2004 IDLE(1)
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