S1D13704 Epson Electronics America, Inc., S1D13704 Datasheet - Page 149

• Manufacturer Part Number: S1D13704
• Description: LCD Controller
• Manufacturer: Epson Electronics America, Inc.

Epson Research and Development
Vancouver Design Center
Programming Notes and Examples
Issue Date: 01/02/12
Note
Note
int seSplitInit(int DevID, WORD Scrn1Addr, WORD Scrn2Addr)
Description:
Parameters:
Return Value: ERR_OK - operation completed with no problems
int seSplitScreen(int DevID, int Screen, int VisibleScanlines)
Description:
Parameters:
Return Value: ERR_OK
It is assumed that the system has been properly initialized prior to calling seSplitInit().
seSplitInit() must be called before calling seSplitScreen()
This function prepares the system for split screen operation. In order for split screen
to function the starting address in display buffer for the upper portion(screen 1) and
the lower portion (screen 2) must be specified. Screen 1 is always displayed above
screen 2 on the display regardless of the location of their start addresses.
DevID
Scrn1Addr - offset, in bytes, to the start of screen 1
Scrn2Addr - offset, in bytes, to the start of screen 2
Changes the relevant registers to adjust the split screen according to the number of
visible lines requested. 'WhichScreen' determines which screen, 1 or 2, to base the
changes on.
The smallest surface screen 1 can display is one line. This is due to the way the
S1D13704 operates. Setting Screen 1 Vertical Size to zero results in one line of
screen 1 being displayed. The remainder of the display will be screen 2 image.
DevID
Screen
VisibleScanlines- number of lines to display for the selected screen
ERR_HAL_BAD_ARG- argument VisibleScanlines is negative or is greater than
vertical panel size or WhichScreen is not SCREEN1 or SCREEN 2.
- registered device ID
- registered device ID
- must be set to 1 or 2 (or use the constants SCREEN1 or SCREEN2)
- operation completed with no problems
X26A-G-002-03
S1D13704
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