Renesas H8S User Manual download pdf (Page 23)

Direct Drive LCD Design Guide

4.1.9 LCDSetRasterOffset

Request display location within larger raster image

Format

sI16 LCDSetRasterOffset(sI16 x, sI16 y);

Parameters

X offset in pixels within the raster.

Y offset in pixels within the raster.

Return Values

0 on success, non-0 on failure

Properties

Prototyped in file ”DirectLCD.h”

Implemented in file “DirectLCD_SBF.c” for H8S family or “DirectLCD_XBCFT.c” for H8SX family.

Description

LCDSetRasterOffset changes the display position within the raster. The offset is limited to be within area

allocated by the FRAME_HEIGHT x FRAME_WIDTH space. If raster is the same size as the panel, the

offset cannot be changed (fixed to 0,0).

Note that LCDSetActiveRaster, LCDSetRasterOffset and LCDSetLineSource are similar in function and

interact.

Example

sI16 x = 40, y=20;

……

If (LCDSetRasterOffset (x, y) != 0) //set raster offset

// handle error;

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Renesas H8S User Manual Page 23