I am having problems communicating to the Smart GPU2 LCD from a Ardunio mega2560. I can send commands
using the Serial Monitor available in the Ardunio environment with success. I can change background color.
For example, I send "U’, followed by “MCFFFF” and “ME” to change the background color to GREEN using the
But when I write a few lines as a program to send these commands,
nothing happens. I have also tried using the examples for the GPU2 LCD available from Ardunio. None of them
do anything. One of the examples is called ARC, or Window. The programs compile without any error but nothing
happens on the screen. I have already transfered the GPU2 Library into the Ardunio Library directory.
I think all these example were written for a different Ardunio board. Please note that I have jumpered TX/RX lines from the
GPU2 LCD to RX0/TX0 of the MEGA2560.
I have also connected the Mega2560 to the PC using the USB port.