You're reading from FPGA Programming for Beginners Bring your ideas to life by creating hardware designs and electronic circuits with SystemVerilog

Product type Paperback

Published in Mar 2021

Publisher Packt

ISBN-13 9781789805413

Length 368 pages

Edition 1st Edition

Languages

Assembly

Tools

FPGA

Concepts

Embedded Systems

Author (1):

Frank Bruno

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Table of Contents (16) Chapters

Preface

1. Section 1: Introduction to FPGAs and Xilinx Architectures

2. Chapter 1: Introduction to FPGA Architectures and Xilinx Vivado FREE CHAPTER

3. Section 2: Introduction to Verilog RTL Design, Simulation, and Implementation

4. Chapter 2: Combinational Logic

5. Chapter 3: Counting Button Presses

6. Chapter 4: Let's Build a Calculator

7. Chapter 5: FPGA Resources and How to Use Them

8. Chapter 6: Math, Parallelism, and Pipelined Design

9. Section 3: Interfacing with External Components

10. Chapter 7: Introduction to AXI

11. Chapter 8: Lots of Data? MIG and DDR2

12. Chapter 9: A Better Way to Display – VGA

13. Chapter 10: Bringing It All Together

14. Chapter 11: Advanced Topics

15. Other Books You May Enjoy

Project 2 – Counting button presses

The project in this chapter will count button presses and display the count in a human-readable form using the seven-segment display.

Introducing the seven-segment display

In the previous chapters, we displayed binary numbers by using the LEDs on the board. You might have wondered why we weren't using the row of unlit 8s. The reason is that there is timing associated with the display that we need registers to accomplish.

Let's take a look at how we light up the seven segments. The following diagram shows which segment is controlled by which cathode:

Figure 3.13 – Seven segment display

Looking at the preceding diagram, we can see there are eight signals that define whether a given LED is lit or not. To compose an image, we simply need to come up with a module that takes in a Binary Coded Decimal (BCD) or hexadecimal number and converts it to a format that the display can handle. We have a...