Horizontal scrolling just requires
writing instructions to the display,
it's listed in the datasheet - but I
can't say I've ever had occasion to
do it?.
To do it vertically you need all the
strings in memory, and a pointer to
the string currently displayed on
the top line. To scroll down
increment the pointer to the nest
line, display it, and display the
following string on line 2 as well. To
scroll up, decrement the pointer,
and display the two lines.
Added after 3 minutes:
Horizontal scrolling just requires
writing instructions to the display,
it's listed in the datasheet - but I
can't say I've ever had occasion to
do it?.
To do it vertically you need all the
strings in memory, and a pointer to
the string currently displayed on
the top line. To scroll down
increment the pointer to the nest
line, display it, and display the
following string on line 2 as well. To
scroll up, decrement the pointer,
and display the two lines.