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Credits

The ZC95 is built on top of many great libraries and bits of other code. Hopefully I've managed to list all of them here.

In addition to code, the hardware - in particular the estim output section - draws very heavily on the design of the MK312-BT.

Library/code:

hagl & hagl_pico_mipi - Hardware Agnostic Graphics Library & Pico HAL

License:

MIT License

Copyright (c) 2021 Mika Tuupola

URL:

https://github.com/tuupola/hagl

https://github.com/tuupola/hagl_pico_mipi

Use:

Everywhere! - Display driver

Library/code:

ESP32 FFT

License:

MIT License

This code was written by [Robin Scheibler](http://www.robinscheibler.org) during rainy days in October 2017.
"Classified" for ESP and ARduino by M. Steltman Mey 2021

URL:

yash-sanghvi/ESP32#1

https://github.com/yash-sanghvi/ESP32/files/6474828/ESPfft.zip

Use:

Spectrum analyzer in the "Audio Threshold" pattern

Library/code:

picow-wlan-setup-webinterface

License:

* Author: Floris Bos
* ### License: public domain / unlicense

URL:

https://github.com/maxnet/picow-wlan-setup-webinterface

Use:

Forms the base of the WiFi AP mode and configuration, including QR code and Web interface to set SSID/PSK. Whilst not a library, large parts (including the web interface) are mostly used as-is

Library/code:

LWIP HTTP server implementation

License:

BSD-3-Clause

* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
* All rights reserved.

* Author: Adam Dunkels <adam@sics.se>
*         Simon Goldschmidt

Use:

HTTP server used both when in AP mode for WiFi setup, and when connected to Wifi for the websocket server. Modifications:

  • In AP mode, returns a "HTTP/1.1 511 Network Authentication Required" response which causes phones (only tested on an iPhone so far) to automatically display the web config page on connecting, instead of having to either enter an address, or browse to a non-https page first.
  • Websocket support - see below

Library/code:

esp-httpd - for websocket support

License:

As per lwIP httpd

URL:

https://github.com/lujji/esp-httpd

Use:

Websocket server when connected to WiFi. Websocket code extracted and patched into the Pico version of the httpd server, then modified to support websocket pings (opcode 0x09).

Library/code:

RFC 1521 base64 encoding/decoding

License:

*  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
*  SPDX-License-Identifier: Apache-2.0

Use:

Websocket implementation

Library/code:

sha1

License:

BSD-3-Clause

 Copyright (c) 2011, Micael Hildenborg
 All rights reserved.

URL:

https://github.com/daviswalker/smallsha1

Use:

Websocket implementation

Library/code:

QR Code generator library (C)

License:

Copyright (c) Project Nayuki. (MIT License)

URL:

https://www.nayuki.io/page/qr-code-generator-library

Use:

Generating QR code used to provide network details when in AP mode for WiFi setup

Library/code:

dhcpserver - part of the MicroPython project

License:

* The MIT License (MIT)
* Copyright (c) 2018-2019 Damien P. George

Use:

DHCP server used when running in AP mode

Library/code:

dnsserver

License:

* The MIT License (MIT)
* Copyright (c) 2015 by Sergey Fetisov <fsenok@gmail.com>

Use:

DNS server used when running in AP mode

Library/code:

ArduinoJson

License:

The MIT License (MIT)

Copyright © 2014-2022, Benoit BLANCHON

URL:

https://arduinojson.org/

Use:

Serializing and deserializing JSON based websocket messages

Library/code:

Lua 5.1.5

License:

MIT License

Copyright (C) 1994-2012 Lua.org, PUC-Rio.  All rights reserved.

URL:

https://www.lua.org

Use:

Running uploaded Lua scripts

Library/code:

Lua CMake files

License:

?

URL:

https://github.com/walterschell/Lua

Use:

Building Lua with CMake. Note above URL includes Lua 5.4.4, but has been tweaked to build Lua 5.1.5

Library/code:

Lua-5.1.5-TR - Lua 5.1.5 with tiny ram patch

License:

MIT License
Copyright (c) 2021 Vincent Hamp

URL:

https://github.com/higaski/Lua-5.1.5-TR

Use:

Running uploaded Lua scripts