Not sure how to explain it, but I wonder if it’s fairly easy to first display a bitmap image on an LCD and then display and update one or more fields with text/characters without clearing the image. I have attached an image that somewhat explains what I want to do even if the text in the attached image looks more to be graphic objects than characters generated by the LCD controller, which in my case will most likely be Epson S1D13700.
My goal is to make a background image that defines a few separate areas of the graphical display along with header for the values and then write the values in the “boxes”.
I found some references here but I can’t find the actual explenation on how to acheive this.
Fun stuff! Now you can overlay text, or draw on on your bitmap.