Embedded Files
Part 1
- Nexys A7 was borrowed in order to complete the Part 1 of Lab 1
- Set up and powered Nexys A7 100T board
- Set up configuration file leddec.bit and loaded it into the FPGA
- Used sliders 0 to 3 in order to determine 4-bit hex digit
- Slider 0 is switched on
- Slider 1 is switched on
- Slider 3 is switched on
- Sliders 1 and 3 are switched on
- The least significant 7-segment decoder counts cycles from 0 to F
Part 2
- Part 2 of Lab 1 was completed
- As of right now, labs are meant to get the user familiar with the Nexys A7 Board as well as Vivado
- Code is being copied and pasted for lab 1
- Started to work on Lab 2: Four - Digit Hex Counter
- Digital hex counter in action
- Build a four-digit (16-bit) counter to display its value on 7-segment displays
- Implemented Design
- Program the FPGA to display a "bouncing ball" on a 800x600 Video Graphics Array (VGA) monitor
- Implemented design of round ball bouncing in both x & y directions
Additions:
- Change the size and color of the ball
- Change the square ball to a round ball
- Introduce a new signal ball_x_motion to allow the ball to move both horizontally and vertically
- Program the FPGA on the Nexys A7 100T board to function as a simple hexadecimal calculator capable of adding and subtracting four-digit hexadecimal numbers using a 16-button keypad module (Pmod KYPD) connected to the Pmod port JA
- Couldn't demonstrate lab due to Covid-19
- Code and implemented design can be found in the Lab 4 link below on my GitHub
- Keypad pin table
Additions:
- Modify the leddec16 module to perform leading zero suppression
- With the leading zeros suppressed, the number “0023” appears as “23”
- Expand the calculator to also do subtraction operations
- Use the button BTND (pin P18 on the Nexys A7 100T board) as the “–” key
- Create a new signal to record whether the “+” key or the “–” key was pushed
- Implemented Hex Calculator Design
- Program the FPGA on the Nexys A7 100T board to generate a wailing audio siren using a digital-to-analog (DAC) converter called Pmod Inter-IC Sound (I2S) with a headphone or speaker connected to the top pins of the Pmod port JA
Additions:
1) Change the upper and lower tone limits
- Modify the tone module to create a square wave instead of a triangle wave when the upper push button (BTNU) is depressed
- Add this push button as an input to siren.vhd and pass its value down to the tone module
- Get the correct pin number for this push button from the Nexys A7 100T Reference Manual
- Note the difference in the quality of the tone when switching to a square wave tone
- DAQ to FPGA Connection
2) Change the wailing speed
- Use the eight slide switches (SW0-SW7) on the Nexys A7 100T board to set the wailing speed
- Add these as inputs to siren.vhd
- Get the correct pin numbers for these switches from the Nexys A7 100T Reference Manual
3) Add a second wail instance to drive the right audio channel
- Use different high and low tone limits and wailing speed for the right audio channel
- Implemented design as shown on Vivado
- Missing DAC Module with Schematic
- Extend the FPGA code developed in Lab 3 (Bouncing Ball) to build a PONG game using a 800x600 Video Graphics Array (VGA) display and a potentiometer with an analog-to-digital converter called Pmod ADC connected to the top pins of the Pmod port JA
Additions:
1) Change ball speed
- The ball speed is currently 6 pixels per video frame
- Use the slide switches on the Nexys A7 100T board to program the ball speed in the range of 1-32 pixels per frame
- Avoid setting the speed to zero as the ball will then never reach the bat or wall
- See how fast to move the ball and still keep it in play
2) Change bat width
- Double the width of the bat to make the game really easy
- Modify the code so that the bat width decreases one pixel each time successfully hitting the ball and then resets to starting width when missing the ball
- See how many times hitting the ball in a row as the bat slowly shrinks
- Count the number of successful hits after each serve and display the count in binary on the LEDs on the Nexys A7 100T board
- Implemented design of the "PONG" game
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