In my project, I would like to be able to know when a particular screen is finished loading. To that end, I followed the advice in the post GTT Firmware Rev 2.0 capabilities, protocol manual issues in which it was suggested
On each my screens, I added a Post Load - Custom Script action that uses the ECHO command to send a short string.f you're looking for an alternative to the Get Module command, specifically for the GTT, you might consider adding an Echo command at the end of your autoexec file. That way, once the GTT has finished booting and executing all other autoexec commands, it can echo a response of your choosing back to your host controller.
What I don't understand is how to read that ECHO from my host, so that I can proceed knowing that my screen has bee loaded. Looking at the gtt_protocol source code, I don't see anything like a "get_response" function.
Anyone know how to do this?