User`s manual

OP710070



 Software

• void glXPutBitmap( int x, int y, int bmWidth,

int bmHeight, unsigned long bmPtr )

Displays a bitmap stored in xmem on the LCD. For bitmaps stored in

root memory, use glPutBitmap.

PARAMETERS: x is the x coordinate of the bitmap left edge.

y is the y coordinate of the bitmap top edge.

bmWidth is the width of the bitmap.

bmHeight is the height of the bitmap.

bmPtr is a pointer to the bitmap. The bitmap format is a column with

the major byte aligned for each column.

OP71.LIB

• void kpInit( int (*changeFn)() )

Initializes the kp module. Call this function before calling other

functions in this library. If the default keypad scanning routine will be

used, use kpDefInit instead of this function.

PARAMETER: changeFn is a pointer to a function that will be called

when the driver detects a change (when kpScanState is called). Two

arguments are passed to the callback function. The first argument is a

pointer to an array that indicates the current state of the keypad. The

second is a pointer to an array that indicates what keypad positions are

changed and detected by kpScanState. The byte offset in the array

represents the line pulled high (row number), and the bits in a byte

represents the positions (column number) read back.

• int kpScanState()

Scans the keypad and detects any changes to the keypad status. If

kpInit is called with a non-NULL function pointer, that function will

be called with the state of the keypad. This function should be called

periodically to scan for keypad activities.

RETURN VALUE: 0 if there is no change to the keypad, non-zero if

there is any change to the keypad.