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Direct Drive LCD Design Guide

4.1.7 LCDSetActiveRaster

Set memory frame to display.

Format

uI16 * LCDSetActiveRaster(uI16 frame);

Parameters

frame

Requested frame buffer index.

Return Values

Pointer to first pixel of frame raster.

Properties

Prototyped in file ”DirectLCD.h”

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

Description

Request the current vertical refresh rate of the LCD panel.

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

interact.

Example

uI16 frame_request;

uI16* select_buffer;

……

frame_request = 1; /* Select frame 1 to display */

select_buffer = LCDSetActiveRaster(frame_request); /* switch buffer */

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