at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 933

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

44.4
44.4.1
44.4.2
6249D–ATARM–20-Dec-07
Examples of Drawing Functions
Line Draw
Block Transfer
This function draws a thick (2 pixels wide) solid black line from start point (startx, starty) to end
point (endx, endy). startx, starty, endx, endy should be in pixel units.
This function OR’s source data (startx, starty) of size (sizex, sizey) with destination data (endx,
endy) and writes it to the destination memory area. sizex, sizey, startx, starty, endx, endy should
be in pixel units.
Void line_draw(unsigned short startx, unsigned short starty,
{
while(graphics_control.2DGC_GSR & 3);
graphics_control.2DGC_SBXR = startx;
graphics_control.2DGC_SBYR = starty;
graphics_control.2DGC_TEXR = endx;
graphics_control.2DGC_TEYR = endy;
graphics_control.2DGC_LOR = 0x00; // Select logic operation MOV
graphics_control.2DGC_CSR = 0x00; // Colour black
graphics_control.2DGC_LWR = 0x02; // 2 pixels wide
graphics_control.2DGC_LPR = 0xFFFF; // Solid line
graphics_control.2DGC_GOR = 0xD5; // Line draw, absolute, no update, 1D
pattern
while(graphics_control.2DGC_GSR & 1);
}
Void block_transfer(unsigned short startx, unsigned short starty, unsigned
short endx,
{
while(graphics_control.2DGC_GSR & 3);
graphics_control.2DGC_2DGC_BTSXR = sizex;
graphics_control.2DGC_2DGC_BTSYR = sizey;
graphics_control.2DGC_SBXR = startx;
graphics_control.2DGC_SBYR = starty;
graphics_control.2DGC_TEXR = endx;
graphics_control.2DGC_TEYR = endy;
graphics_control.2DGC_LOR = 0x01; // Select logic operation OR
graphics_control.2DGC_GOR = 0xB4; // Selects block transfer, absolute, no
update
while(graphics_control.2DGC_GSR & 2);
}
unsigned short endx, unsigned short endy)
unsigned short endy, unsigned short sizex, unsigned short sizey)
AT91SAM9263 Preliminary
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