Try send standby to TV as: 0x36 (Real phys. address Yes, Addresed to 0x00) with Green (Send).
Then open Owif and change command to 0x04 (Image View On)and send it => TV will wake up. If will not set true input, send from Owif 0x82 (Active source)
Then you can see, that HDMI-CEC works well... (Btw - Yellow, as you used it - is toggle to monitoring HDMI CEC screen (of course, there is under next Yellow "Standby" too) )
If works Standby/Wakeup TV from HDMITest manualy, then it works from image too. I am using same cpp parts ( i think ... created in 2012 ... loong time ), but without delay. =>
try there in HDMI-CEC set Senddeinterval to "Disabled". Why you using there 250ms ? It was useful for DMM boxes or some stupid TVs ...
Edited by ims, 27 July 2017 - 14:14.