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I have a display of Nokia 6280.
On the Internet write that it is compatible with MC2PA8201
Hardware scrolling does not work
Void MC2PA8201_ScrollArea (uint16_t y, uint16_t pos) {
  Uint16_t bfa = 320-pos-y;
  Wr_cmd (VERTICAL_SCROLLING_DEFINITION); // 0x33
  Wr_dat (y >> ;
  Wr_dat (y);
  Wr_dat (pos >> ;
  Wr_dat (pos);
  Wr_dat (bfa >> ;
  Wr_dat (bfa);
}

Void MC2PA8201_SetScrollPosition (uint16_t pos) {
  Wr_cmd (VERTICAL_SCROLLING_START_ADDRESS); // 0x37
  Wr_dat (pos >> ;
  Wr_dat (pos);
}

When you call MC2PA8201_ScrollArea (0.320);
The screen switches to portrait mode
When you call MC2PA8201_SetScrollPosition (uint16_t pos) in the loop, nothing
Occurs
How to solve this problem?
On the Internet write that this display stands in Nokia 6270/6288/6265/6275/6282
Where can I find the description of the commands for this lcd?