title: HDMI-CEC Working on some commands using adb
body: <p>I have mecool tv box connected with hdmi and samsung tv connected as well. when i gave standby command using adb my tv goes to standby but when i gave any other commands it can't work.
  e.g</p>
  
  <pre><code># echo 0x40 0x36 &gt; /sys/class/cec/cmd 
  </code></pre>
  
  <p>this command working for standby.</p>
  
  <pre><code> # echo 0x40 0x8F&gt; /sys/class/cec/cmd
   # echo 0x80 0x82&gt; /sys/class/cec/cmd
  </code></pre>
  
  <p>these commands didn't display anything on screen or tv. i am taking help about commands from this website <a href="http://www.cec-o-matic.com/" rel="nofollow noreferrer">cec-o-matic</a></p>