I have bought a 16 x 2 LCD which I want to interface to a ATMEGA 324 microcontroller. The problem is that the vendor didn't give me a good enough datasheet. It does not contain any information regarding the initializing of the LCD.
At the product description it said that the controller is HD44780. I followed the initializing sequence in the datasheet, but all I get is one line of white full rectangles. I followed other initializing sequences, but all that I got were 2 lines of white full rectangles or a full line + a line with smaller rectangles.
Do you have any idea where I could find the correct initializing sequence? The LCD looks like this:
And on the back it says "1602A" and "QAPASS".
I will post later the sequences which I have tried to use.