Accelerometer Temperature Power Reference Design AXE5000 - ArrowElectronics/Agilex-5 GitHub Wiki

Introduction

This reference design demonstrates a few features of the Agilex-5 and the AXE5000 evaluation board. The software running on the NIOS-V processor implements 2 demos. When switching between demos, push-button S2 needs to be pressed. A red LED (D10) is always blinking to indicate the sign of life.

Demo #1: DIP_SW[0] is OFF.

  • Uses the LIS3DH 3-axis accelerometer, mounted on the AXE5000, to read the x, y, and z axes values
  • Use a PWM to illuminate the R, G, and B colors of an RGB LED proportionate to the values read
  • When the board is inactive for about 5 seconds, the RGB LED goes into flashing a specific pattern
  • When the board is being moved, the RGB LED displays the 3 colors corresponding to the tilt data

Demo #2: DIP_SW[0] is ON.

  • Requires a terminal emulator to display data sent over a UART at 115200 baud rate
  • The FPGA temperature sensors (4 regions) are read via the SDM and displayed
  • The FS1606-0600 power module Vin, Vout, and Iout feeding the FPGA core voltage (0.75V) are read via I2C and displayed

Block Diagram

The reference design includes

  • Nios V/m Microcontroller
  • Onchip RAM (256KB)
  • Light-Weight UART
  • I2C
  • System ID peripheral
  • Push-Button
  • DIP switches
  • Custom PWM

Prerequisites

  • Review Getting Started
  • Host machine running Linux or Windows.
  • Internet connection to download the tools and clone the repositories from github. If you are behind a firewall you will need your system administrator to enable you to get to the git trees.
  • Quartus Prime Pro version 25.1 (with NIOS-V license)
  • Ashling RiscFree IDE for Intel FPGAs 25.1, if modifying software

Set up the Environment

Open a shell (niosv command shell for Windows)

    $ mkdir agilex_5
    $ cd agilex_5

Build the Quartus Reference Design

This can be built under Windows or Linux.

Clone the repository. Open a shell (niosv command shell for Windows)

    $ git clone -b QPDS25.1_QPDS_REL_PR https://github.com/ArrowElectronics/refdes-agilex5 refdes-agilex5
    $ cd refdes-agilex5/axe5000/accel_temp_refdes

Open Quartus and load the Project located in the folder shown above

    $ File --> Open Project. Select axe5000_top.qpf

Add pin assignments

    $ View --> Console
    $ In the Tcl Console window type 'source sources/axe5000_pin_assignment.tcl' and press Enter

Compile the Quartus project

    $ Processing --> Start Compilation

The following file is created:

  • agilex_5/refdes-agilex5/axe5000/accel_temp_refdes/axe5000_top.sof

Configure the Board for the Demo

The following components are required for the demo:

  • AXE5000 (TEI0181) development board,
  • USB C Cable

Assemble the Hardware

  • Plug the USB Cable into J9, the USB C connector.

Program the FPGA configuration file

Open the Quartus Programmer

    $ Tools --> Programmer

Detect the JTAG chain

    $ Processing --> Auto Detect

Select the A5EC008BM16AE device in the topology diagram

Program the device

    $ Edit --> Change File. Select axe5000_top.sof
    $ Click the 'Program/Configure' check box.
    $ Processing --> Start

This will take a few seconds to complete.

The .hex code running on the NIOS-V is already incorporated into the .sof file.

Open a terminal (for Demo #2 only)

     $ Open Tera-Term or equivalent terminal program
     $ set its baud rate to 115200
     $ Press S2 button to refresh measurements

Each time S2 is pressed, the readings are refreshed.

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