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Single line text scrolling on LCD ?

 
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leaveme



Joined: 24 Nov 2010
Posts: 19

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Single line text scrolling on LCD ?
PostPosted: Sat Dec 10, 2011 10:48 pm     Reply with quote

I'm using following code for left/right text scrolling. But they are handling both the lines at the same time. Anybody can suggest anything so that I can scroll only single line ?

Code:
lcd_send_byte(0, 0x1E);
lcd_send_byte(0, 0x18);


Thank you.
temtronic



Joined: 01 Jul 2010
Posts: 9215
Location: Greensville,Ontario

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PostPosted: Sun Dec 11, 2011 7:32 am     Reply with quote

Easy to do...

First create 2 16 byte 'buffers'(arrays) and copy the text you want to scroll from your program to the first .
Second, copy the data from the first buffer to the second,offsetting the indices(pointers).
Now move the data from the 2nd buffer to the LCD.

to scroll left to right..
outputbuffer[2]=inputbuffer[1].

to scroll right to left
ouputbuffer[2]=inputbuffer[3].

if you want the message to 'loop' around, copy [0] to [15] !


..actual code is up to you to do.

If you try it on graphpaper, it'll be easy to visualize the 'flow' of the code.
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