CSCE 313 Project 4 SOLUTION

CSCE 313 Project 4
Project Objective
In this project, you will
1. learn how to implement a video system on FPGA.
2. get introduced to video hardware functions.
3. develop an application that runs on the video system.
Hardware Requirements
a. Remove the 7-segments components, as well as onchip_memory component, bcd_switches
and speed_switches. Keep only the system_mode switches.
b. Rename the clock source as clock_source_0, nios processor as processor and JTAG-UART
as jtag components.
c. Make sure that your processor is on the fast mode (niosII/f) and the instruction and data cache
is 4KB.
d. Add the following components and setup its parameters as shown below. You may also use
the diagram in L.6 as a reference.
1. Clock_source_1
name Conduit name
clock_source_1 sdram_clk
2. System and sdram clock
name Setting
sys_sdram_pll DE-Series Board: DE2-115
3. Dual-Clock FIFO
name Color bits Color planes
dual_clock_fifo 10 3
4. RGB Resampler
name Incoming format Outgoing format
rgb_resampler 24-bit RGB 30-bit RGB
5. SDRAM controller
CSCE 313 Project 4 Spring 2023
board
device
name Conduit
name
Bit
Width
Architecture Address
width
Generic
memory
DRAM sdram_controller sdram 32 Chip select: 1,
Banks:4
Row: 13,
Col: 10
Enable
6. SRAM Controller
Name conduit Setting Enable
sram_controller sram DE2-115 Use as pixel buffer for video out
7. Pixel Buffer DMA Controller
name Addressing Mode Frame Resolution Pixel Format
dma_buffer Consecutive Width 320, Height 240 24-bit RGB
8. Video Alpha Blender
name Addressing Mode Clock Connection
Video Alpha
Blender
Simple cys_cllk Connect foreground to video
Character buffer.
Connect Background to Video Scaler.
Connect output to Video FIFO.
9. Video Character Buffer
Transaction Clock Connection
Enable cys_cllk Connect data/control to processor Avalon data bus.
Connect output to foreground Alpha blender
10.Scaler
name Width
factor
Height
factor
width Height Data bits
per symbol
Symbol
per beat
video_scaler 2 2 320 240 10 3
11.VGA Controller
name conduit DE-series Board Video out device VGA Resolution
vga vga DE2-115 VGA connector VGA 640 x 480
12.Video clocks for DE-series Boards
Input settings Video out setting
50 MHz Enable vga clock
CSCE 313 Project 4 Spring 2023
e. Set reset and exception vectors of NIOS processor to sdram_controller (instead of onchip
memory as we had in previous projects).
f. In Blackboard, along with the assignment, you will find video system_connections.pdf attached
which can be used as a reference to connect the components.
g. **All resets must be connected to the Reset Output (clk_reset) of clock_source_0
Software Requirements
You are required to write a C/C++ application code to execute the functions shown in the following
table. Several things are explained below as a guidance you use to write the code.
mode Function
0 Display the gamecock image
on the screen
1 Resize the image by factor of
0.5 (both width and height)
2 Resize the image by factor of
2 (both width and height)
3 Print message “Video project”
1. A software template (ctemplate.c) is attached which you can use it as your reference.
2. Two attached documents (file.c and file.h) include the source code of gamecock image and the
header file respectively.
3. You should add these two files (file.c and file.h) into your application project by doing the
following:
a. Download the two files into any directory (for example download folder).
b. Then, open the folder containing the files (the download folder)
c. Drag these two files into your application project.
d. The instructor/TA will also explain this during the lecture/lab.
4. To access the pixel buffer and dma functions, call the following the header in your application
C/C++ code:
#include <altera_up_avalon_video_pixel_buffer_dma.h>
CSCE 313 Project 4 Spring 2023
5. To read the pixel_buffer (or the sram content), use the following code:
alt_up_pixel_buffer_dma_dev *my_pixel_buffer;
my_pixel_buffer =
alt_up_pixel_buffer_dma_open_dev("/dev/dma_buffer");
6. After that you need to check if the pixel buffer array (my_pixel_buffer) contains the image pixel
to do so, add the following code:
if(!my_pixel_buffer) printf("Error opening pixel buffer\n");
7. Anytime you want to display an image on the screen, try first to clear the screen by calling the
following function:
 alt_up_pixel_buffer_dma_clear_screen(my_pixel_buffer,0);
8. To display an image, you need to use the following function and include the following header
file:
alt_up_pixel_buffer_dma_draw(my_pixel_buffer,
 (myimage[(i*320*3+j*3+2)]) +
 (myimage[(i*320*3+j*3+1)]<<8) +
 (myimage[(i*320*3+j*3+0)]<<16),j,i);
9. To resize the image by any factor f (where f is a float) and display the new image. For
example, to double the image size, f=2.0. You may use the following code.
alt_up_pixel_buffer_dma_draw(my_pixel_buffer,
 (myimage[(i*320*3+j*3+2)]) +
 (myimage[(i*320*3+j*3+1)]<<8) +
 (myimage[(i*320*3+j*3+0)]<<16),j*f,i*f);
Project Report (50%)
The project report will be graded out of 100, and the points will be distributed as following:
1.0 (30 points total, each value is 10 points) Run the application project and take a picture for
the screen that shows the execution of each function: display image, resize image by 0.5
and resize image by 2.
CSCE 313 Project 4 Spring 2023
2.0 (70 points) Answer the following questions:
a. You are given the following frame.
1. (15 points) Find its resolution
2. (15 points) The coordinates of the red pixel.
b. Assume you are required to map the given frame as 24-bit RGB into a pixel memory
which its base address is 0x08000000.
1. (20 points) Find the pixel address of the yellow pixel.
2. (20 points) Find the frame size
Project Demo (50%)
The main purpose of the demo is to test your project functionality and execution.
Demos will be graded out of 100, but worth 50% of total project grade.
Both partners must show up in that day. If a member didn’t show up, he/she receives 0 unless
an excused absence was provided.
Demos will be conducted during the lab time on the following dates:
o Wednesday March 15th for group1
o Friday March 17th for group2
Below are how the demo points will be distributed.
….
…..
…..
….
0 1 2 639
479
0
1
2
…..
….
…..
CSCE 313 Project 4 Spring 2023
Tasks Point
Display image at mode=0 /25
Resize image by 0.5 at mode=1 /25
Resize image by 2 at mode=2 /25
Questions /25
Project Submission
1. Save the project report as r4_username1_username2.pdf, username of both students in the
group. Five Points will be deducted if the group didn’t save their files as it is explained above.
2. For this project, you are required to submit only the project report (No project submission is
required). Submission date is Tuesday November 1st before the class starts.
3. Only one attempt is allowed.
4. Only one group member can submit the report.
5. Remember: Any grade dispute must be raised within one week of the grade posting.