I am sorry, it is a error in this code:
it should iterate to 4, not to 3:
for(int u = 0; u < 4; u++)
display_buffer[u] = text_to_display.charAt(u);
I am sorry, it is a error in this code:
it should iterate to 4, not to 3:
for(int u = 0; u < 4; u++)
display_buffer[u] = text_to_display.charAt(u);