at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 922

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

Figure 44-3. Relative Line Draw From (2,0) to (5,0)
Figure 44-4. Line Draw From (0,0) to (1,0) and Update XY Four Times
922
Relative Line Draw with Update XY Option
1D Line Draw with Broken Pattern 0xAAAA
AT91SAM9263 Preliminary
(0,0)
(0,4)
First pixel position is loaded into source/begin x and source/begin y registers and last pixel posi-
tion is loaded into target/end x target/end y registers. After the necessary color and pattern are
loaded into appropriate registers, respectively 2DGC_CSR and 2DGC_LPR, line draw is initi-
ated with a write to 2DGC_LOR register. If the line needs to be extended, then a single write to
the 2DGC_GOR register with update XY option set initiates line draw (extension).
(0,0)
(0,4)
The first pixel drawn is based on the least significant bit of the pattern register. In this example
the first pixel is not drawn. After rendering each pixel, the pattern register is rotated to the right
by one bit.
Y
Y
0,0
1,0
2,0
2,0
3,0
3,0
DISPLAY
DISPLAY
4,0
4,0
X
X
5,0
5,0
6,0
7,0
(9,0)
(9,4)
(9,0)
(9,4)
6249D–ATARM–20-Dec-07