Basic Usage:
- Set MSEL[4:0] to "00000" (i.e. all DIP switches UP)
nix build .#nixosConfigurations.de10-nano
then zstdcat | ddresult/sd-image/*.img.zst
to an SD card- Plug in SD card, USB UART (115200 baud), and power, then run
sudo wavdump
at prompt
- Collect data from N I2S microphones
- Convolve the data from the Nth microphone with M independent K-tap filters (for N x M x K total filter coefficients)
- Produce M output channels as the sum of the particular N convolved signals
- Save this data to disk or stream it out over the network
Other Goal: build a bitstream and HPS image from source using Nix with no blobs or non-free non-mainline software (except for Quartus)
Todo:
- non-maximal kernel config
- fix cross hacks
- refactor Nix derivation components to be more reusable
- some cool automatic way of assigning a MAC address
- more reasonable way of setting up bitstream under Linux
- bitstream compression and faster loading
- document better
The code in this repository, as well as the produced artifacts, are licensed under the GPLv3 (or later) license.
PAPA FPGA System
Copyright (C) 2023-2024 Thomas Watson
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Certain files are also licensed under the MIT license (detailed in
/LICENSE.mit
). These files are identified by a corresponding note in their
header. Other files (e.g. vendored code or patches) may have other license
terms. Contact the author for details, or information on availability of
additional terms.