16X2 LCD: Sliding writings

[daisy_merollin]

Hey guys. So I was trying to make a sliding writing coming out of the lcd screen. I'm using the first row already and I want a sliding writing on the second row. Lets say I want to write "Hello".

I tried to set the cursor to (-6, 1) // print("Hello") // and then scroll display left enough times with for loop so that it comes to the center. But when I set the cursor to (-6, 1) and try to print there, it automatically prints it to (0, 1). Is there any way to turn this option off?

And another quick question, when I scroll display for example left, does the whole writing slides to the left or can I specify so that for example only second row scrolls to the left?

Any help would be greatly appreciated! Thanks in advance...

[david_prentice]

Scroll works on all lines.

If you want one line to move and the other lines to remain stationary:
Handle the text in a software buffer. Set the cursor where you want it, and print the letters from your buffer.

Even a 20x4 display only needs a 80-char software buffer. It is simple to process the "screen image" in SRAM. Then either send all 80 chars or just the chars that have changed.

David.

[Paul_B]

There is a very limited benefit in scrolling on a character LCD. For one thing, you have to move a complete character position, you cannot smoothly scroll, and the LCD has significant persistence so it blurs.

Animation in general is not terribly successful.