Merge pull request #1299 from arduino/karlsoderby/esp32-pinmap

[Nano-ESP32] Add pin map + changes in power tree

Author: karlsoderby

content/hardware/03.nano/boards/nano-esp32/datasheet/assets/Nano_ESP32_Power_Tree.png

@@ -91,7 +91,7 @@ The Nano ESP32 uses the [Arduino Core for ESP32 boards](https://github.com/ardui
 | **Ref.** | **Description**                                  |
 | -------- | ------------------------------------------------ |
 | M1       | NORA-W106-10B (ESP32-S3 SoC)                     |
-| J1       | CX90B-16P USB-C® connector                        |
+| J1       | CX90B-16P USB-C® connector                       |
 | JP1      | 1x15 analog header                               |
 | JP2      | 1x15 digital header                              |
 | U2       | MP2322GQH step down converter                    |
@@ -428,17 +428,18 @@ Hereby, Arduino S.r.l. declares that this product is in compliance with essentia
 
 ## Reference Documentation
 
-| Ref                       | Link                                                                                            |
-| ------------------------- | ----------------------------------------------------------------------------------------------- |
-| Arduino IDE (Desktop)     | <https://www.arduino.cc/en/Main/Software>                                                       |
-| Arduino Web Editor (Cloud)       | <https://create.arduino.cc/editor>                                                              |
+| Ref                          | Link                                                                                            |
+| ---------------------------- | ----------------------------------------------------------------------------------------------- |
+| Arduino IDE (Desktop)        | <https://www.arduino.cc/en/Main/Software>                                                       |
+| Arduino Web Editor (Cloud)   | <https://create.arduino.cc/editor>                                                              |
 | Web Editor - Getting Started | <https://docs.arduino.cc/cloud/web-editor/tutorials/getting-started/getting-started-web-editor> |
-| Project Hub               | <https://create.arduino.cc/projecthub?by=part&part_id=11332&sort=trending>                      |
-| Library Reference         | <https://github.com/arduino-libraries/>                                                         |
-| Online Store              | <https://store.arduino.cc/>                                                                     |
+| Project Hub                  | <https://create.arduino.cc/projecthub?by=part&part_id=11332&sort=trending>                      |
+| Library Reference            | <https://github.com/arduino-libraries/>                                                         |
+| Online Store                 | <https://store.arduino.cc/>                                                                     |
 
 ## Change Log
 
-| **Date**   | **Changes** |
-| ---------- | ----------- |
-| 08/06/2023 | Release     |
+| **Date**   | **Changes**                  |
+| ---------- | ---------------------------- |
+| 08/06/2023 | Release                      |
+| 09/01/2023 | Update power tree flowchart. |

content/hardware/03.nano/boards/nano-esp32/datasheet/datasheet.md

@@ -45,14 +45,50 @@ The full datasheet is available as a downloadable PDF from the link below:
 
 - [Download the Nano ESP32 datasheet](/resources/datasheets/ABX00083-datasheet.pdf)
 
-## Nano ESP32 Core
+## Arduino ESP32 Core
 
 This board is based on the [Arduino ESP32 Core](https://github.com/arduino/arduino-esp32), that is derived from the original ESP32 core. It provides a rich set of examples to access the various features on your board, which is accessed directly through the IDE.
 
 ![ESP32 examples in the IDE.](assets/esp32-examples.png)
 
 To install the core, go the **board manager** and search for **Nano ESP32**. For more detailed instructions to install the core, please refer to the [Getting Started with Nano ESP32](/tutorials/nano-esp32/getting-started-nano-esp32) article.
 
+## ESP32 Pin Map
+
+The Nano ESP32's default pins are designed to match the **Nano form factor**. This pin mapping is done in the official Arduino ESP32 core (see just above). See below the pin map to understand how the physical pins correlate to the ESP32: 
+
+| Nano  | ESP32  |
+| ----- | ------ |
+| D0    | GPIO44 |
+| D1    | GPIO43 |
+| D2    | GPIO5  |
+| D3    | GPIO6  |
+| D4    | GPIO7  |
+| D5    | GPIO8  |
+| D6    | GPIO9  |
+| D7    | GPIO10 |
+| D8    | GPIO17 |
+| D9    | GPIO18 |
+| D10   | GPIO21 |
+| D11   | GPIO38 |
+| D12   | GPIO47 |
+| D13   | GPIO48 |
+| A0    | GPIO1  |
+| A1    | GPIO2  |
+| A2    | GPIO3  |
+| A3    | GPIO4  |
+| A4    | GPIO11 |
+| A5    | GPIO12 |
+| A6    | GPIO13 |
+| A7    | GPIO14 |
+| BOOT0 | GPIO46 |
+| BOOT1 | GPIO0  |
+
+See the pinout below for a better visual translation:
+
+![Nano / ESP32 pinout](assets/esp-pinout.png)
+
+
 ## Arduino Bootloader Mode
 The Nano ESP32 has a feature that we call Arduino Bootloader-mode, what this means is that you are able to put the board in a sort of recovery mode by double pressing the reset button while the board is powered on.