Terasic DE2i-150 Manual de usuario

My First FPGA for

Altera DE2i-150 Board

CONTENTS

Chapter 1

Introduction

.......................................... 1

1.1 Design Flow.............................................................................. 1

1.2 Before You Begin...................................................................... 2

1.3 What You Will Learn ................................................................ 6

Chapter 2

Assign The Device

................................... 8

2.1 Assign The Device .................................................................... 8

Chapter 3

Design Entry

........................................ 12

3.1 Add a PLL Megafunction........................................................ 12

3.2 Add a Multiplexer ................................................................... 29

3.3 Assign the Pins........................................................................ 35

3.4 Create a Default TimeQuest SDC File.................................... 37

Chapter 4

Compile and Verify Your Design

....................... 39

4.1 Compile Your Design.............................................................. 39

4.2 Program the FPGA Device...................................................... 41

4.3 Verify The Hardware............................................................... 43

Chapter 5

DE2i-150 System Builder

............................. 46

5.1 Headquarter & Branches......................................................... 46

Chapter 1

Introduction

This tutorial provides comprehensive information that will help you understand how to create a

FPGA design and run it on you DE2i-150 development board. The following sections provide a

quick overview of the design flow, explain what you need to get started, and describe what you will

learn.

Figure 1-1shows the FPGAdesign flow block diagram.

The standard FPGA design flow starts with design entry using schematics or a hardware description

language (HDL), such as Verilog HDL or VHDL. In this step, you can create a digital circuit that is

implemented inside the FPGA. The flow then proceeds through compilation, simulation,

programming, and verification in the FPGA hardware.

Figure 1-1 Design Flow

This tutorial guides you through all of the steps except for simulation. Although it is not covered in

this document, simulation is very important to learn, and there are entire applications devoted to

simulating hardware designs. There are two types of simulation, Functional and Timing Functional

simulation allows you to verify that your code is manipulating the inputs and outputs appropriately.

Timing (or post place-and-route) simulation verifies that the design meets timing and functions

appropriately in the device.

This tutorial assumes the following prerequisites

■You generally know what a FPGA is. This tutorial does not explain the basic concepts of

programmable logic.

■You are somewhat familiar with digital circuit design and electronic design automation (EDA)

tools.

■You have installed the Altera Quartus II 12.0sp1 software on your computer. If you do not have

the Quartus II software, you can download it from the Altera web site at www.altera.com/download.

■You have a DE2i-150 Development Board on which you will test your project. Using a

development board helps you to verify whether your design is really working.

■You have gone through the quick start guide and/or the getting started user guide for your

development kit. These documents ensure that you have:

Installed the required software.

Determined that the development board functions properly and is connected

to your computer.

Next step you should installed the USB-Blaster driver, Plug in the 12-volt adapter to provide power

to the board. Use the USB cable to connect the rightmost USB connector (the one closest to the

VGA FPGA) on the DE2i-150 board to a USB port on a computer that runs the Quartus II software.

Turn on the power switch on the DE2i-150 board.

The computer will recognize the new hardware connected to its USB port and Power on the board

as shown in Figure 1-3, but it will be unable to proceed if it does not have the required driver

already installed. The DE2i-150 board is programmed by using Altera USB-Blaster mechanism. If

the USB-Blaster driver is not already installed, the New Hardware Wizard in Figure 1-3 will

appear.

Figure 1-2 Connection Setup

Figure 1-3 Found New Hardware Wizard

Since the desired driver is not available on the Windows Update Web site, select “No, not this time”

in response to the question asked and click Next. This leads to the window in Figure 1-4.

Figure 1-4 The driver is found in a specific location

The driver is available within the Quartus II software. Hence, select Install from a specific location

and click Next to get to Figure 1-5.

Figure 1-5 Specify the location of the driver

Now, choose Search for the best driver in these locations and click Browse to get to the pop-up box

in Figure 1-6 Find the desired driver, which is at location C:\altera\12.0\quartus\drivers\usb-blaster.

Click OK and then upon returning to Figure 1-5 click Next. At this point the installation will

commence, but a dialog box in Figure 1-7 will appear indicating that the driver has not passed the

Windows Logo testing. Click Continue Anyway.

Figure 1-6 Browse to find the location

Figure 1-7 There is no need to test the driver

The driver will now be installed as indicated in Figure 1-8 Click Finish and you can start using the

DE2i-150 board.

Figure 1-8 The driver is installed

In this tutorial you will perform the following tasks:

Create a design that causes LEDs on the development board to blink at a speed that is controlled by

an input key—This design is easy to create and gives you visual feedback that the design works. Of

course, you can use your DE2i-150 board to run other designs as well. For the LED design, you will

write Verilog HDL code for a simple 32-bit counter, add a phase-locked loop (PLL) megafunction

as the clock source, and add a 2-input multiplexer megafunction. When the design is running on the

board, you can press an input switch to multiplex the counter bits that drive the output LEDs.

Becoming familiar with Quartus II design tools—This tutorial will not make you an expert (Please

reference DE2i-150 tut_quartus_intro_verilog document), but at the end, you will understand basic

concepts about Quartus II projects, such as entering a design using a schematic editor and HDL,

compiling your design, and downloading it into the FPGA on your DE2i-150 development board.

Develop a foundation to learn more about FPGAs—For example, you can create and download

digital signal processing (DSP) functions onto a single chip, or build a multi-processor system, or

create anything else you can imagine all on the same chip. You don’t have to scour data books to

find the perfect logic device or create your own ASIC. All you need is your computer, your

imagination, and anAltera DE2i-150 FPGA development board.

Chapter 2

Assign The Device

You begin this tutorial by creating a new Quartus II project. A project is a set of files that maintain

information about your FPGA design. The Quartus II Settings File (.qsf) and Quartus II Project File

(.qpf) files are the primary files in a Quartus II project. To compile a design or make pin

assignments, you must first create a project.

1. In the Quartus II software, select File > New Project Wizard. The Introduction page opens. See

Figure 2-1

Figure 2-1 New Project Wizard introduction

2. Click Next.

3. Enter the following information about your project:

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