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Digital Camera Design Demonstration
3-4 Configuring the Camera (TREX C1 Board Users)
Locate the project directory from the CD-ROM included and follow the steps
below:
Quartus II Project Directory: TR1_CCD
FPGA Bitstream Used: TR1_CCD.sof or TR1_CCD.pof
1.
2.
3.
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8.
9.
Ensure the connection is made correctly as shown in Figure 3.2. Make sure
the IDE cable is connected to JP2 of the TR1 board and the CMOS sensor
module is connected to the U2 connector.
Download the bitstream ( TR1_CCD.sof/pof ) to the TR1 board.
Connect the VGA output of the TR1 board to a VGA monitor.
Set toggle switches SW2 and SW1 to ON (UP position); set the other
switches to OFF(DOWN position)
Press KEY0 on the DE2 board to reset the circuit.
You can press KEY3 to switch to the FREE RUN mode and you should be
able to see whatever the camera sees on the VGA display.
Press KEY2 to take a shot of the photo; you can press KEY3 again to switch
back to FREE RUN mode.
If you find the image shown on the display is too dark, you can increase
the exposure time by changing the SW[3:0] to a larger binary number –
Remember to press KEY1 to reload the new value defined by SW[3:0]
The following table summarize the functional keys of the digital camera.
Component
KEY[0]
KEY[1]
KEY[2]
KEY[3]
SW[3:0]
LED[7:0]
HEX[7:0]
13
Function Description
Reset circuit
Set new exposure time
Trigger the image capture (take a shot)
Switch to the Free Run mode
4-bit exposure time
Line counter (Display ONLY)
Frame counter (Display ONLY)
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