AN 985: Nios® V Processor Tutorial

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ID 784468
Date 7/24/2024
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Document Table of Contents
Document Table of Contents x
1. AN 985: Nios® V Processor Tutorial
1. AN 985: Nios® V Processor Tutorial x
1.1. Overview 1.2. Generating the System 1.3. Simulating the Nios® V Processor System 1.4. Programming the System 1.5. Debugging the System 1.6. Document Revision History for AN 985: Nios® V Processor Tutorial
1.1. Overview x
1.1.1. Hardware and Software Requirements
1.2. Generating the System x
1.2.1. Building Hardware Design in Platform Designer 1.2.2. Building Software Design with Ashling* RiscFree* IDE for Intel® FPGAs
1.2.1. Building Hardware Design in Platform Designer x
1.2.1.1. Manual Instantiation 1.2.1.2. Board-Aware Flow 1.2.1.3. Configurable Example Design
1.2.1.1. Manual Instantiation x
1.2.1.1.1. Creating a New Project 1.2.1.1.2. Creating a Platform Designer System 1.2.1.1.3. Configuring Assignment and Constraint 1.2.1.1.4. Compiling the Quartus® Prime Software Project
1.2.1.1.2. Creating a Platform Designer System x
1.2.1.1.2.1. Adding Nios® V/m Processor Intel® FPGA IP 1.2.1.1.2.2. Adding On-Chip Memory II (RAM or ROM) Intel® FPGA IP 1.2.1.1.2.3. Adding JTAG UART Intel® FPGA IP 1.2.1.1.2.4. Adding Reset Release Intel® FPGA IP 1.2.1.1.2.5. Connect Interfaces and Signals 1.2.1.1.2.6. Clear System Warnings and Errors 1.2.1.1.2.7. Configuring the Reset Vector of the Nios® V Processor 1.2.1.1.2.8. Saving and Generating System HDL
1.2.1.1.3. Configuring Assignment and Constraint x
1.2.1.1.3.1. Adding Design Files 1.2.1.1.3.2. Adding Synopsys Design Constraint (SDC) File 1.2.1.1.3.3. Pin Assignments 1.2.1.1.3.4. Configuration and Power Management Assignments
1.2.1.2. Board-Aware Flow x
1.2.1.2.1. Creating a New Project 1.2.1.2.2. Creating a Platform Designer System 1.2.1.2.3. Configuring Assignment and Constraint 1.2.1.2.4. Compiling the Quartus® Prime Software Project
1.2.1.2.2. Creating a Platform Designer System x
1.2.1.2.2.1. Adding Nios® V/m Processor Intel® FPGA IP 1.2.1.2.2.2. Adding On-Chip Memory (RAM or ROM) Intel® FPGA IP 1.2.1.2.2.3. Adding JTAG UART Intel® FPGA IP 1.2.1.2.2.4. Adding System ID Peripheral Intel® FPGA IP 1.2.1.2.2.5. Adding Reset Release Intel FPGA IP 1.2.1.2.2.6. Connect Interfaces and Signals 1.2.1.2.2.7. Clear System Warnings and Errors 1.2.1.2.2.8. Saving and Generating System HDL
1.2.1.2.3. Configuring Assignment and Constraint x
1.2.1.2.3.1. Adding Design Files 1.2.1.2.3.2. Adding Synopsys Design Constraint (SDC) File 1.2.1.2.3.3. Pin Assignments 1.2.1.2.3.4. Configuration and Power Management Assignments
1.2.1.3. Configurable Example Design x
1.2.1.3.1. Creating a New Project 1.2.1.3.2. Creating a Platform Designer System 1.2.1.3.3. Configuring Assignment and Constraint 1.2.1.3.4. Compiling the Quartus® Prime Software Project
1.2.1.3.2. Creating a Platform Designer System x
1.2.1.3.2.1. Saving and Generating System HDL
1.2.1.3.3. Configuring Assignment and Constraint x
1.2.1.3.3.1. Adding Design Files 1.2.1.3.3.2. Pin Assignments 1.2.1.3.3.3. Configuration and Power Management Assignments
1.2.2. Building Software Design with Ashling* RiscFree* IDE for Intel® FPGAs x
1.2.2.1. Creating a Board Support Package 1.2.2.2. Creating an Application Project File 1.2.2.3. Importing Projects into Ashling* RiscFree* IDE for Intel® FPGAs 1.2.2.4. Building the Hello World Application
1.2.2.3. Importing Projects into Ashling* RiscFree* IDE for Intel® FPGAs x
1.2.2.3.1. Importing Nios® V Processor BSP Project 1.2.2.3.2. Importing Application Project
1.3. Simulating the Nios® V Processor System x
1.3.1. Preparing Hardware Design for Simulation 1.3.2. Preparing Software Design for Simulation 1.3.3. Checking Simulation Files 1.3.4. Running System Simulation
1.4. Programming the System x
1.4.1. Programming Hardware SOF File 1.4.2. Downloading the Software ELF File 1.4.3. Applying External Tool Configuration 1.4.4. Run Hello World Application
1.5. Debugging the System x
1.5.1. Software Debugging
1.5.1. Software Debugging x
1.5.1.1. Setting Initial Breakpoint 1.5.1.2. Starting the Debugger 1.5.1.3. View Global Variables 1.5.1.4. View Memory 1.5.1.5. Setting a Second Breakpoint 1.5.1.6. Control Debugger
1. AN 985: Nios® V Processor Tutorial

1.5.1.1. Setting Initial Breakpoint

Before debugging any system, you need to have at least one breakpoint to suspend the execution inside the program.
  1. Open the Ashling* RiscFree* IDE for Intel® FPGAs.
  2. Open the Nios® V processor software project (hello.c).
  3. Set a breakpoint at main() by double-clicking on the left-margin of the line containing main().
  4. Ensure that a blue circle have appeared beside main().
Figure 88. Initial Breakpoint at main()
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