Справочник Пользователя для Renesas H8S

Direct Drive LCD Design Guide

 

4.1.10 

 
Defines the source regions of the active display window. 
 

sI16 LCDSetLineSource 
(sI16 Region, sI16 LineCount, uI16 *pSource, sI16 LineStep); 

 

Region of display (horizontal strip). Ranging from 0 to MAX_FRAME_REGIONS (defined in 
DirectLCD_CNF.h). Normally, region 0 starts at the bottom of the screen. However; when 
V_LINES_INVERT is defined to change line presentation on the screen, region 0 will start at the top 
of the screen. MAX_FRAME_REGIONS should be set to 1 if multiple regions are not used (this will 
eliminate any associated runtime overhead). 

Is the number of lines associated with this region. This value can vary from 1 to V_LINES_PANEL. 

Address of the first pixel of the first line within the region. The entire memory space of the region 
must be within the “LCD_Frames” section, or the request will not be accepted. 

Distance (in pixels/uI16’s) from first pixel of first line to first pixel of second line (source regions can 
be wider than the panel). 

 

0 on success, non-0 on failure 
 

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

 

LCDSetLineSource defines the source regions of the active display window. 
Note that LCDSetActiveRaster, LCDSetRasterOffset and LCDSetLineSource are similar in function and 
interact. 
 

 
#pragma section LCD_Frames 
// SRAM allocated for GUI display 
uI16 GUI_buffer[50 * H_DOT_DISPLAY]; 
// allocate panning buffer 4x panel 
uI16 Image_buffer[2* V_LINES_PANEL * 2 * H_DOT_DISPLAY];  
#pragma section 
 …… 
(void)LCDSetLineSource (0,50,GUI_buffer, H_DOT_DISPLAY); //GUI Region 
(void)LCDSetLineSource (1,V_LINES_PANEL-50, 
 &Image_buffer[ offset], 2*H_DOT_DISPLAY); //Pan Region 
 …… 

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