It is very possible that you ran out of arduino memory. Do you have an arduino MEGA? If not, try to trim your CMAP to only, say 10 characters and try to display a message composed with only those 10 characters.
It is very possible that you ran out of arduino memory. Do you have an arduino MEGA? If not, try to trim your CMAP to only, say 10 characters and try to display a message composed with only those 10 characters.