Docs: Initial documentation structure using Sphinx

.gitignore

@@ -18,3 +18,6 @@ __vm/
 .vscode/
 platform.sloeber.txt
 boards.sloeber.txt
+
+# Ignore docs build (Sphinx)
+docs/build

README.md

@@ -6,10 +6,8 @@
 ## Contents
 - [ESP32-S2 and ESP32-C3 Support](#esp32-s2-and-esp32-c3-support)
 - [Development Status](#development-status)
-- [Installation Instructions](#installation-instructions)
 - [Decoding Exceptions](#decoding-exceptions)
 - [Issue/Bug report template](#issuebug-report-template)
-- [ESP32Dev Board PINMAP](#esp32dev-board-pinmap)
 
 ### ESP32-S2 and ESP32-C3 Support
 If you want to test ESP32-S2 and/or ESP32-C3 through the board manager, please use the development release link: `https://github.com/raw/espressif/arduino-esp32/gh-pages/package_esp32_dev_index.json` and install the latest 2.0.0 version.
@@ -21,19 +19,9 @@ Latest Stable Release  [![Release Version](https://img.shields.io/github/release
 Latest Development Release  [![Release Version](https://img.shields.io/github/release/espressif/arduino-esp32/all.svg?style=plastic)](https://github.com/espressif/arduino-esp32/releases/latest/) [![Release Date](https://img.shields.io/github/release-date-pre/espressif/arduino-esp32.svg?style=plastic)](https://github.com/espressif/arduino-esp32/releases/latest/) [![Downloads](https://img.shields.io/github/downloads-pre/espressif/arduino-esp32/latest/total.svg?style=plastic)](https://github.com/espressif/arduino-esp32/releases/latest/)
 
 
-### Installation Instructions
-- Using Arduino IDE Boards Manager (preferred)
-  + [Instructions for Boards Manager](docs/arduino-ide/boards_manager.md)
-- Using Arduino IDE with the development repository
-  + [Instructions for Windows](docs/arduino-ide/windows.md)
-  + [Instructions for Mac](docs/arduino-ide/mac.md)
-  + [Instructions for Debian/Ubuntu Linux](docs/arduino-ide/debian_ubuntu.md)
-  + [Instructions for Fedora](docs/arduino-ide/fedora.md)
-  + [Instructions for openSUSE](docs/arduino-ide/opensuse.md)
-- [Using PlatformIO](docs/platformio.md)
-- [Building with make](docs/make.md)
-- [Using as ESP-IDF component](docs/esp-idf_component.md)
-- [Using OTAWebUpdater](docs/OTAWebUpdate/OTAWebUpdate.md)
+### Documentation
+
+You can use [Arduino-ESP32 Online Documentation](https://docs.espressif.com/projects/arduino-esp32/en/docs-structure/index.html) to get all information about this project.
 
 ### Decoding exceptions
 
@@ -43,15 +31,3 @@ You can use [EspExceptionDecoder](https://github.com/me-no-dev/EspExceptionDecod
 Before reporting an issue, make sure you've searched for similar one that was already created. Also make sure to go through all the issues labelled as [for reference](https://github.com/espressif/arduino-esp32/issues?utf8=%E2%9C%93&q=is%3Aissue%20label%3A%22for%20reference%22%20).
 
 Finally, if you are sure no one else had the issue, follow the [ISSUE_TEMPLATE](docs/ISSUE_TEMPLATE.md) while reporting any issue.
-
-### ESP32Dev Board PINMAP
-
-![Pin Functions](docs/esp32_pinmap.png)
-
-![ESP32S2_Pinmap](docs/esp32s2_pinmap.png)
-
-![ESP32C3_Pinmap](docs/esp32c3_pinmap.png)
-
-### Tip
-
-Sometimes to program ESP32 via serial you must keep GPIO0 LOW during the programming process

docs/Makefile

@@ -0,0 +1,28 @@
+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line, and also
+# from the environment for the first two.
+SPHINXOPTS    ?=
+SPHINXBUILD   ?= sphinx-build
+SOURCEDIR     = source
+BUILDDIR      = build
+
+LINKCHECKDIR  = build/linkcheck
+
+.PHONY: checklinks
+	checklinks:
+	$(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(LINKCHECKDIR)
+	@echo
+	@echo "Check finished. Report is in $(LINKCHECKDIR)."
+
+# Put it first so that "make" without argument is like "make help".
+help:
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)