title: Obtain RSSI with hcidump
body: <p>In order to read the raw RSSI values, we use a utility called Hcidump, which monitors the Bluetooth HCI data. Using hcidump commands, we can read the raw RSSI values when an inquiry response message is received. To obtain RSSI values for every response packet we first set the inquiry mode to Inquiry With RSSI.In order to read raw RSSI values we run the hcidump tool and then use the appropriate
  HCI functions to start periodic inquiry.</p>
  
  <p>I don't know how to use hcidump to obatain only RSSI raw data or maybe how to  start a periodic inquiry. I see all the opcions but I am not able.</p>
  
  <p>I make hcidump --raw  to obtain raw data, and try to parse this data to obtain the rssi, but I dont know wich hex is the rssi info.</p>
  
  <p>This is what I obtain </p>
  
  <pre><code>  04 2F FF 01 AC A2 65 92 88 EC 01 00 0C 02 5A 2D 1F D2 08 09 
    4E 65 78 75 73 20 36 17 03 05 11 0A 11 0C 11 0E 11 12 11 15 
    11 16 11 1F 11 2F 11 00 12 32 11 01 05 01 07 00 00 00 00 00 
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
  </code></pre>
  
  <p>Now I need to know which is the RSSI value.</p>