Accelerometer Temperature Power Reference Design AXC3000 25.1.1

Introduction

This reference design demonstrates a few features of the Agilex™ 3 and the AXC3000 evaluation board. Its' software running on the NIOS-V processor implements 2 demos. When first powering on or switching between demos push-button S2 needs to be pressed. A red LED 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 AXC3000, 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 25.1.1 (with NIOS-V license)
• Ashling RiscFree IDE for Intel FPGAs 25.1.1, if modifying software

Set up the Environment

Open a shell (niosv command shell for Windows)

    $ mkdir agilex_3
    $ cd agilex_3

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 QPDS25.1.1_QPDS_REL_PR https://github.com/ArrowElectronics/refdes-agilex3 refdes-agilex3
    $ cd refdes-agilex3/axc3000/accel_temp_refdes

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

    $ File --> Open Project. axc3000_top.qpf

Add pin assignments

    $ View --> Console
    $ In the Tcl Console window type 'source sources/axc3000_pin_assignment.tcl' and press Enter

Compile the Quartus project

    $ Processing --> Start Compilation

The following file is created:

• agilex_3/refdes-agilex3/axc3000/accel_temp_refdes/axc3000_top.sof

Configure the Board for the Demo

The following components are required for the demo:

• AXC3000 (TEI0131) 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

Add JTAG Hardware. If the Hardware Setup has 'No hardware'

    $ Press the Hardware Setup button
    $ Double click USB Blaster III. Press Close

Detect the JTAG chain

    $ Processing --> Auto Detect

Select the A3CY100BM16A device in the topology diagram

Program the device

    $ Edit --> Change File. Select axc3000_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.

---

Return - Table of Contents