参数资料
型号: HW-V4SX35-VIDEO-SK-EC
厂商: Xilinx Inc
文件页数: 98/112页
文件大小: 0K
描述: VIRTEX-4 VIDEO STARTER KIT
产品变化通告: Development Systems Discontinuation 12/Jan/2009
标准包装: 1
系列: Virtex®-4
类型: DSP FPGA
适用于相关产品: Virtex?-4 SX
所含物品: 开发平台,子板,电源,闪存卡,CMOS 图像传感器和软件
Chapter 6: VSK Tutorial
a.
b.
c.
R
Select the vid_in port and modify the net connection to vchan_1.
Select the vid_out port and modify the net connection to vchan_2
Open the vio_if pcore port list and modify the vin net connection to vchan_2.
d. Open the ddr pcore port list and modify the vchan_1 net connection to
vchan_3.
Note: The ddr pcore is not actually used in the data path of this tutorial. It is included so
that this design can be used as a starting point for more complex designs that might require
the ddr pcore.
10. After configuring the pcore port names, the video buses between the pcores should be
wired as shown in Figure 6-11 .
VIODC
vio_if
vchan_0
vop
vchan_1
vid gain
offset
vchan_2
ug217_ch7_12_121205
Figure 6-11: Pcore Wiring with vid_gain_offset Pcore Inserted into Video Pipeline
11. Select Hardware->Generate Netlist to generate a new netlist and check that the pcore
import is error free.
12. Select Hardware->Generate Bitstream to generate the bitstream
These last steps take 10-20 minutes to the new hardware implementation.
Importing the Pcore Software Drivers
Next, the user needs to create the software drivers to load the gain and offset registers. Base
I/O functions are already created when the pcore was created and can be found in the file
<vid_gain_offset.h> , but the base IO functions will be wrapped with another C-
function to load the offset and gain.
The completed C functions are found in the file named vsk_vid_gain_offset.c . This
file includes the function below which sets the video gain according to a channel number:
void set_vid_gain(int chan, int gain)
{
if(chan==0)
{
vid_gain_offset_Write(VID_GAIN_OFFSET_RED_GAIN,
VID_GAIN_OFFSET_RED_GAIN_DIN, gain);
}
if(chan==1)
{
vid_gain_offset_Write(VID_GAIN_OFFSET_GREEN_GAIN,
VID_GAIN_OFFSET_GREEN_GAIN_DIN, gain);
}
if(chan==2)
{
98
Video Starter Kit
UG217 (v1.5) October 26, 2006
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