GLCD - Writing and Clearing Text of varying length
Posted: Fri Jul 01, 2022 1:01 pm
Hi,
I am writing a string to a GLCD, I have the Transparency set to 0 so any new text cleanly overwrites the old text.
However if the the length of the string is shorter then the previous text, the last few characters of the old text remain.
With a conventional LCD I would simply preceed any new text by writing a block of spaces to blank out any old text.
This does not seem to work with my GLCD.
Do I have to write a solid square of back ground? as this seems quite slow to do in hardware.
Thoughts?
I am writing a string to a GLCD, I have the Transparency set to 0 so any new text cleanly overwrites the old text.
However if the the length of the string is shorter then the previous text, the last few characters of the old text remain.
With a conventional LCD I would simply preceed any new text by writing a block of spaces to blank out any old text.
This does not seem to work with my GLCD.

Do I have to write a solid square of back ground? as this seems quite slow to do in hardware.
Thoughts?
