Hdmi detect in real time

[williamfj]

Hello everyone, this is my first question I hope to put it in the right place.

I need to have knowledge if the hdmi connector is connected to the raspberry in real time (hot_plug = 1 in config.txt). I'm programming in c I've seen something called mailboxes of arm processor but the information is very confusing.

could you tell me if it is possible to know this by programming or reading system files.


thanks for the help.

[-rst-]

Maybe use 'system()' to run the command 'tvservice -s' and parse the output?

[AndyD]

Maybe use 'system()' to run the command 'tvservice -s' and parse the output?

The source for tvservice is available here.