Quote Originally Posted by sixty9sandals View Post
i never think that such a small mistake have make me lost 2 days of my life ,figure out what went wrong...again..thanks alot for this wonderful lesson..u have no idea how smiling im now..now im trying to figure out what error ive done in my wiring..hope it wont take my other 2 days of my life...
Give the LCD at least a second of 'pause' before you try to write to it. Change the data_us and command_us (as described in the green book) to 2000 for command and about 200 for data (but not over 255, byte value for data_us).
If that doesn't work, play with the contrast voltages, vary it from ground to Vcc on the LCD, hold the LCD at crazy angles and see if you can see anything on it.