AN 985: Nios® V Processor Tutorial

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ID 784468
Date 5/15/2024
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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. Creating a New Project 1.2.2. Building Hardware Design in Platform Designer 1.2.3. Building Software Design with Ashling* RiscFree* IDE for Intel® FPGAs
1.2.2. Building Hardware Design in Platform Designer x
1.2.2.1. Creating a Platform Designer System 1.2.2.2. Configuring Assignment and Constraint 1.2.2.3. Compiling the Quartus® Prime Software Project
1.2.2.1. Creating a Platform Designer System x
1.2.2.1.1. Adding Nios® V/m Processor Intel® FPGA IP 1.2.2.1.2. Adding On-Chip Memory II (RAM or ROM) Intel® FPGA IP 1.2.2.1.3. Adding JTAG UART Intel® FPGA IP 1.2.2.1.4. Adding Reset Release Intel® FPGA IP 1.2.2.1.5. Connect Interfaces and Signals 1.2.2.1.6. Clear System Warnings and Errors 1.2.2.1.7. Configuring the Reset Vector of the Nios® V Processor 1.2.2.1.8. Saving and Generating System HDL
1.2.2.2. Configuring Assignment and Constraint x
1.2.2.2.1. Adding Design Files 1.2.2.2.2. Adding Synopsys Design Constraint (SDC) File 1.2.2.2.3. Pin Assignments 1.2.2.2.4. Configuration and Power Management Assignments
1.2.3. Building Software Design with Ashling* RiscFree* IDE for Intel® FPGAs x
1.2.3.1. Creating a Board Support Package 1.2.3.2. Creating an Application Project File 1.2.3.3. Importing Projects into Ashling* RiscFree* IDE for Intel® FPGAs 1.2.3.4. Building the Hello World Application
1.2.3.3. Importing Projects into Ashling* RiscFree* IDE for Intel® FPGAs x
1.2.3.3.1. Importing Nios® V Processor BSP Project 1.2.3.3.2. 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

1.4.2. Downloading the Software ELF File

  1. Ensure that the development kit is successfully configured with the processor system.
  2. Launch the Ashling* RiscFree* IDE for Intel® FPGAs.
  3. Navigate to Run > Run Configurations.
  4. In Run Configuration window, double click Ashling RISC-V Hardware Debugging and name it as ELF_download.
    Figure 39. Run Configuration
  5. In the Main tab, make the following settings:
    1. Project: app
    2. C/C++ Application: <Working directory>/software/app/build/Debug/hello.elf
    Figure 40. Main Tab
  6. In the Debugger tab, make the following settings:
    1. Debug Probe Configuration:
      1. Debug probe: Agilex™ development kit
      2. Transport type: JTAG
      3. JTAG frequency: 16 MHz
    2. Target Configuration: Click Auto-detect Scan Chain to list all possible cores. Select the appropriate Device/TAP and Nios V Processor Core.
    Figure 41. Debugger Tab
  7. Click Apply and Run. Ashling* RiscFree* IDE for Intel® FPGAs prints the following message in its Console.
    Figure 42. ELF_download Message (Console tab)
Alternatively, you can download the software ELF file using CLI.
  1. Launch the Nios V Command Shell. 
    $ niosv-shell
  2. Execute the command below to download the ELF file. 
    $ niosv-download <Working directory>/software/app/debug/hello.elf -g -r
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