Third-party software in the SeaGlance firmware
The SeaGlance firmware is built with the open-source software below. Every SeaGlance contains it in binary form. Settings › About on the display links to this page.
| Component | Version | Licence | Copyright |
|---|---|---|---|
| ESP32 Arduino core (arduino-esp32) | 3.3.9 | LGPL-2.1-or-later (core); parts Apache-2.0, MIT | Espressif Systems and contributors; Arduino |
| ESP-IDF (inside the core) | 5.5.4 | Apache-2.0 | Espressif Systems (Shanghai) Co., Ltd. |
| FreeRTOS kernel (ESP-IDF) | ESP-IDF 5.5.4 | MIT | Amazon.com, Inc. or its affiliates |
| lwIP TCP/IP stack (ESP-IDF) | ESP-IDF 5.5.4 | BSD-3-Clause | Swedish Institute of Computer Science |
| Mbed TLS (ESP-IDF) | ESP-IDF 5.5.4 | Apache-2.0 | The Mbed TLS Contributors |
Mozilla CA certificate list (ESP-IDF esp_crt_bundle) |
ESP-IDF 5.5.4 | MPL-2.0 (data) | Mozilla Foundation |
| wpa_supplicant (ESP-IDF) | ESP-IDF 5.5.4 | BSD-3-Clause | Jouni Malinen and contributors |
QR code generator (ESP-IDF qrcode, Nayuki) |
ESP-IDF 5.5.4 | MIT | Project Nayuki |
| TinyUSB (core, USB serial) | core 3.3.9 | MIT | Ha Thach (tinyusb.org) |
| Espressif Wi-Fi and PHY libraries (binary) | ESP-IDF 5.5.4 | Espressif binary licence (free to use with Espressif chips) | Espressif Systems |
| WiFiManager (tzapu) | 2.0.17 | MIT | (c) 2015 tzapu |
| TMCStepper (teemuatlut) | 0.7.3 | MIT | (c) 2019 teemuatlut |
| GFX Library for Arduino (Moon On Our Nation) | 1.6.8 | BSD (Adafruit GFX licence) | (c) 2012 Adafruit Industries; Moon On Our Nation |
| Adafruit HUSB238 Library | 1.0.1 | MIT | (c) 2023 Adafruit Industries |
| Adafruit BusIO | 1.17.4 | MIT | (c) 2017 Adafruit Industries |
GPL / LGPL: the ESP32 Arduino core is LGPL-2.1. Nothing under the GPL is linked into the firmware (GFX
Library for Arduino ships some GNU Unifont-based CJK fonts under the GPL in src/font/; SeaGlance does not
include them, it uses the built-in Adafruit glcdfont). The LGPL lets users relink the firmware with a
changed core: the complete SeaGlance firmware source is published at
https://github.com/TheMaritimePilot/SeaGlance (firmware/README.md says how to build it), which satisfies that.
Wave data shown and played by SeaGlance: NOAA National Data Buoy Center (US public domain); Marine Institute and Met Éireann, Irish Weather Buoy Network (CC BY 4.0); CDIP, Scripps Institution of Oceanography (free to use, please acknowledge). SeaGlance is not endorsed by these organisations.
Licence texts
MIT (WiFiManager, TMCStepper, Adafruit HUSB238, Adafruit BusIO, FreeRTOS, TinyUSB, QR code generator)
Copyright (c) 2015 tzapu; (c) 2019 teemuatlut; (c) 2023 and (c) 2017 Adafruit Industries; Amazon.com, Inc. or its affiliates; Ha Thach (tinyusb.org); Project Nayuki.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
BSD (GFX Library for Arduino)
Software License Agreement (BSD License)
Copyright (c) 2012 Adafruit Industries. 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.
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 HOLDER 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.
BSD-3-Clause (lwIP, wpa_supplicant)
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: (1) Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. (2) 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. (3) The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE AUTHOR "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 AUTHOR 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.
Apache-2.0 (ESP-IDF, Mbed TLS), LGPL-2.1 (ESP32 Arduino core), MPL-2.0 (CA list)
These licences are long; their full texts are at https://www.apache.org/licenses/LICENSE-2.0,
https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html and https://www.mozilla.org/MPL/2.0/, and in the
ESP32 Arduino core source (LICENSE.md) and ESP-IDF source (LICENSE). The printed leaflet or the website copy
of this notice must carry the full texts.