Z-World OP7100, User Manual

Page: 57 / 122

OP7100 Software s 57
• void op71BrdOff485( void );
Disables the OP7100's RS-485 driver.
• void op71BrdOn485( void );
Enables the OP7100's RS-485 driver.
• void op71Beep( int onOff );
Controls the OP7100's beeper.
PARAMETER:
onOff
is non-zero to beep, zero to stop beep.
• void op71BuffLock( void );
Increments the OP7100 LCD screen locking counter. Graphics calls are
recorded in the LCD memory buffer, but are not transferred to the LCD
if the counter is non-zero.
op71BuffLock()
and
op71BuffUnlock()
can be nested up to a
level of 255, but be sure to balance the calls. It is not a requirement to
use these procedures, but a set of
op71BuffLock
and
op71BuffUnlock
bracketing a set of related graphics calls speeds up
the rendering significantly.
• void op71BuffUnlock( void );
Decrements the OP7100 LCD screen locking counter. The contents of
the LCD buffer are transferred to the LCD if the counter goes to zero.
• void op71SetBrushType( int type );
Sets the drawing method (or color) of pixels drawn by subsequent
graphics calls.
PARAMETER:
type
can be one of the following:
GL_SET
or
OP71BLACK
draws black pixels
GL_CLEAR
or
OP71WHITE
draws white pixels
GL_XOR
or
OP71XOR
draws “
oldPixel xor newPixel
” pixels
GL_BLOCK
or
OP71BLACK
draws black pixels
• int op71GetBrushType( void );
Gets the current method (or color) of pixels drawn by subsequent
graphics calls.
RETURN: The current brush type.