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DE0 Nano Tutorial

If you downloaded the tutorials as a release archive, you can directly start. If you have cloned the git repository, you instead need to follow the instructions for building the hardware and software as described below. Please also follow the common tutorial setup.

To run the demo you need:

  • quartus_pgm in your PATH, check with

      which quartus_pgm

  • openocd in your PATH and OPENOCD set, check with

      openocd --version
  echo $OPENOCD

  • or1k-elf-gdb in your PATH, check with

      or1k-elf-gdb --version

Setup the board

First you need to setup the board, by connecting the USB cable to your computer. If you want to use UART, an extra dongle is needed. Any USB-UART adapter can be used. You need to connect it to the header on the bottom of the board as depicted below.

uart

Program the FPGA bitstream

Once the board is setup, you can download the FPGA bitstream by running

make program

Start the OpenOCD daemon

In one terminal execute the following command:

openocd -s ${OPENOCD}/share/openocd/scripts/ -f interface/altera-usb-blaster.cfg -f ../or1k-dev.tcl

Run software with gdb

From a second terminal you can now run gdb, for example to run the timer example:

or1k-elf-gdb timer.elf

In gdb execute the following steps:

target remote :50001
load
set $npc=0x100
continue

You should see the LEDs counting and UART output once a second.

(Re-)build the hardware

You can rebuilt the hardware by running:

make build-hw

(Re-)build the software

Some example software is available, that you can (re-)build for the DE0 nano board by running

make build-sw