# Third Party Software Notices — MicroDens Firmware The MicroDens firmware incorporates and redistributes the third party software components listed below. Copyright notices and licence texts are reproduced in fulfilment of the obligations of the respective licences. The Texas Instruments notice is also reproduced in full in the user manual supplied with the product, as expressly required by the relevant BSD clause. ## Summary | Component | Version | Copyright holder | Licence | |---|---|---|---| | Arduino core for ESP32 (framework-arduinoespressif32) | 3.20017.241212+sha.dcc1105b | Arduino Team; Espressif Systems (Shanghai) CO LTD | LGPL-2.1-or-later | | ModbusMaster | 2.0.1 | Doc Walker | Apache-2.0 | | DRV8889-Q1 device driver | — (source embedded in the repository) | Texas Instruments Incorporated | BSD 3-clause | | RTC wake stub | — (source embedded in the repository) | Espressif Systems (Shanghai) CO LTD | Unlicense OR CC0-1.0 | --- ## 1. Arduino core for ESP32 — LGPL-2.1-or-later Component: `framework-arduinoespressif32`, version `3.20017.241212+sha.dcc1105b` Origin: https://github.com/espressif/arduino-esp32 Copyright (c) 2005-2013 Arduino Team. All right reserved. Copyright (c) Espressif Systems (Shanghai) CO LTD This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA The full text of the LGPL-2.1 licence is available at: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html > **OPEN POINT — requires legal assessment, not yet resolved.** > > On the ESP32 platform this component is **statically linked** into the firmware > image. LGPL-2.1 permits static linking within a proprietary product (§6), but in > exchange requires that the recipient be enabled to **re-link the firmware with a > modified version of the library** — typically by distributing the compiled > objects (`.o` / `.a`) of the proprietary code, or the source code. > > This condition **is not satisfied by reproducing the copyright notice alone** > and is not currently fulfilled. How to give effect to it is a company decision > to be taken with the support of a legal assessment. It is a condition shared by > commercial products based on Arduino-ESP32 generally, for which established > practices exist. ## 2. ModbusMaster — Apache License 2.0 Component: `ModbusMaster`, version `2.0.1` Origin: https://github.com/4-20ma/ModbusMaster Copyright:: 2009-2016 Doc Walker Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. The full text of the Apache 2.0 licence is available at: http://www.apache.org/licenses/LICENSE-2.0 Note: the ModbusMaster 2.0.1 distribution **does not contain a `NOTICE` file**; the ancillary obligation under §4(d) of the licence therefore does not arise. ## 3. DRV8889-Q1 device driver — BSD 3-clause Component: driver for the Texas Instruments DRV8889-Q1 stepper driver. Source embedded in the repository: `include/peripherals/drv8889-q1.h`, `src/peripherals/drv8889-q1.cpp`. Copyright (c) 2023, Texas Instruments Incorporated All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Texas Instruments Incorporated nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. The second clause expressly requires this notice to be reproduced **in the documentation or other materials supplied with the product**. It is accordingly reproduced in full in the user manual as well as here. ## 4. RTC wake stub — Unlicense OR CC0-1.0 Component: RTC wake stub derived from the ESP-IDF examples. Source embedded in the repository: `include/rtc_wake_stub.h`, `src/rtc_wake_stub.c`. SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD SPDX-License-Identifier: Unlicense OR CC0-1.0 Released into the public domain: no attribution obligations arise. The notice is reproduced here for completeness of the inventory. --- ## Components reviewed and not applicable - **TI IQmath Library** — the include in `include/peripherals/drv8889-q1.h` is **commented out** and the library is neither present in the repository nor linked into the binary. No obligation arises. ## Note on method The information above was derived from the files actually present in the project and in the dependency cache: - the framework's `package.json` and the header of `cores/esp32/Arduino.h`; - `library.properties`, `VERSION`, `LICENSE` and the header of `src/ModbusMaster.h` in `.pio/libdeps/esp32-s3-devkitm-1/ModbusMaster/`; - the comment blocks at the top of the sources embedded in the repository. The actual presence of the components in the firmware image was verified against `.pio/build/esp32-s3-devkitm-1/firmware.map`.