Paul__B:
I think it would be a good idea to explain what it is you really want to achieve.
I completely agree with this.
It could be that wanting/needing to read the display is a case of an XY Problem.
For me in particular, I'm not understanding how reading the display helps as it isn't' clear what these buzzwords really mean:
Test Driven Development and continuous integration. Once written tests always much faster to run than any other manual testing.
My take is that reading the display requires modifications to the code so the code running when testing is not really the same code that would be shipping.
But that is based on not having a full description of what is wanted or knowing how the reads from the display LCD will be used.
--- bill