esp32/boards/UM_NANOS3: Add new UM NanoS3 board.

Signed-off-by: Seon Rozenblum <seon@unexpectedmaker.com>

ports/esp32/boards/UM_NANOS3/board.json

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+{
+    "deploy": [
+        "deploy.md"
+    ],
+    "docs": "",
+    "features": [
+        "Battery Charging",
+        "RGB LED",
+        "SPIRAM",
+        "WiFi",
+        "BLE"
+    ],
+    "features_non_filterable": [
+        "TinyPICO Nano Compatible"
+    ],
+    "id": "nanos3",
+    "images": [
+        "unexpectedmaker_nanos3.jpg"
+    ],
+    "mcu": "esp32s3",
+    "product": "NanoS3",
+    "thumbnail": "",
+    "url": "https://nanos3.io",
+    "vendor": "Unexpected Maker"
+}

ports/esp32/boards/UM_NANOS3/board.md

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+The following files are firmware for the NanoS3.

ports/esp32/boards/UM_NANOS3/deploy.md

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+Program your board using the latest version of the esptool.py program, found [here](https://github.com/espressif/esptool).
+
+To flash or erase your NanoS3, you have to first put it into download mode.
+To do this, follow these steps:
+
+- Press and hold the [BOOT] button
+- Press and release the [RESET] button
+- Release the [BOOT] button
+
+Now the board is in download mode and the native USB will have enumerated as a serial device.
+
+If you are putting MicroPython on your board for the first time then you should
+first erase the entire flash using:
+
+### Linux
+```bash
+esptool.py --chip esp32s3 --port /dev/ttyACM0 erase_flash
+```
+
+### Mac
+Please do a `ls /dev/cu.usbm*` to determine the port your board has enumerated as.
+```bash
+esptool.py --chip esp32s3 --port /dev/cu.usbmodem01 erase_flash
+```
+
+### Windows
+Change (X) to whatever COM port is being used by the board
+```bash
+esptool --chip esp32s3 --port COM(X) erase_flash
+```
+
+Now download the version of the firmware you would like to install from the options below,
+then use the following command to program the firmware starting at address 0x0,
+remembering to replace `nanos3-micropython-firmware-version.bin` with the name of
+the firmware you just downloaded:
+
+### Linux
+```bash
+esptool.py --chip esp32s3 --port /dev/ttyACM0 write_flash -z 0x0 nanos3-micropython-firmware-version.bin
+```
+
+### Mac
+Please do a `ls /dev/cu.usbm*` to determine the port your board has enumerated as.
+```bash
+esptool.py --chip esp32s3 --port /dev/cu.usbmodem01 write_flash -z 0x0 nanos3-micropython-firmware-version.bin
+```
+
+### Windows
+Change (X) to whatever COM port is being used by the board
+```bash
+esptool --chip esp32s3 --port COM(X) write_flash -z 0x0 nanos3-micropython-firmware-version.bin
+```

ports/esp32/boards/UM_NANOS3/manifest.py

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+include("$(PORT_DIR)/boards/manifest.py")
+freeze("modules")

ports/esp32/boards/UM_NANOS3/modules/nanos3.py

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+# NanoS3 Helper Library
+# MIT license; Copyright (c) 2023 Seon Rozenblum - Unexpected Maker
+#
+# Project home:
+#   https://nanos3.io
+
+# Import required libraries
+from micropython import const
+from machine import Pin, ADC
+import time
+
+# TinyS3 Hardware Pin Assignments
+
+# RGB LED Pins
+RGB_DATA = const(41)
+RGB_PWR = const(42)
+
+# SPI
+SPI_MOSI = const(35)
+SPI_MISO = const(37)
+SPI_CLK = const(36)
+
+# I2C
+I2C_SDA = const(8)
+I2C_SCL = const(9)
+
+
+# Helper functions
+def set_pixel_power(state):
+    """Enable or Disable power to the onboard NeoPixel to either show colour, or to reduce power for deep sleep."""
+    Pin(RGB_PWR, Pin.OUT).value(state)
+
+
+# NeoPixel rainbow colour wheel
+def rgb_color_wheel(wheel_pos):
+    """Color wheel to allow for cycling through the rainbow of RGB colors."""
+    wheel_pos = wheel_pos % 255
+
+    if wheel_pos < 85:
+        return 255 - wheel_pos * 3, 0, wheel_pos * 3
+    elif wheel_pos < 170:
+        wheel_pos -= 85
+        return 0, wheel_pos * 3, 255 - wheel_pos * 3
+    else:
+        wheel_pos -= 170
+        return wheel_pos * 3, 255 - wheel_pos * 3, 0

ports/esp32/boards/UM_NANOS3/mpconfigboard.cmake

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+set(IDF_TARGET esp32s3)
+
+set(SDKCONFIG_DEFAULTS
+    boards/sdkconfig.base
+    boards/sdkconfig.usb
+    boards/sdkconfig.ble
+    boards/sdkconfig.240mhz
+    boards/sdkconfig.spiram_sx
+    boards/UM_TINYS3/sdkconfig.board
+)
+
+set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)

ports/esp32/boards/UM_NANOS3/mpconfigboard.h

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+#define MICROPY_HW_BOARD_NAME               "NanoS3"
+#define MICROPY_HW_MCU_NAME                 "ESP32-S3-FN8"
+#define MICROPY_PY_NETWORK_HOSTNAME_DEFAULT "NanoS3"
+
+#define MICROPY_PY_MACHINE_DAC              (0)
+
+#define MICROPY_HW_I2C0_SCL                 (9)
+#define MICROPY_HW_I2C0_SDA                 (8)
+
+#define MICROPY_HW_SPI1_MOSI                (35)
+#define MICROPY_HW_SPI1_MISO                (37)
+#define MICROPY_HW_SPI1_SCK                 (36)

ports/esp32/boards/UM_NANOS3/pins.csv

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+I2C_SCL,GPIO8
+I2C_SDA,GPIO9
+SPI_SS,GPIO34
+SPI_MOSI,GPIO35
+SPI_SCK,GPIO36
+SPI_MISO,GPIO37
+RGB_DATA,GPIO41
+RGB_PWR,GPIO42
+UART0_TX,GPIO43
+UART0_RX,GPIO44

ports/esp32/boards/UM_NANOS3/sdkconfig.board

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+CONFIG_ESPTOOLPY_FLASHMODE_QIO=y
+CONFIG_ESPTOOLPY_FLASHFREQ_80M=y
+CONFIG_ESPTOOLPY_AFTER_NORESET=y
+
+CONFIG_ESPTOOLPY_FLASHSIZE_4MB=
+CONFIG_ESPTOOLPY_FLASHSIZE_8MB=y
+CONFIG_ESPTOOLPY_FLASHSIZE_16MB=
+CONFIG_SPIRAM_MEMTEST=
+CONFIG_PARTITION_TABLE_CUSTOM=y
+CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions-8MiB.csv"
+
+CONFIG_LWIP_LOCAL_HOSTNAME="UMNanoS3"
+
+CONFIG_TINYUSB_DESC_CUSTOM_VID=0x303A
+CONFIG_TINYUSB_DESC_CUSTOM_PID=0x817A
+CONFIG_TINYUSB_DESC_BCD_DEVICE=0x0100
+CONFIG_TINYUSB_DESC_MANUFACTURER_STRING="Unexpected Maker"
+CONFIG_TINYUSB_DESC_PRODUCT_STRING="NanoS3"
+CONFIG_TINYUSB_DESC_SERIAL_STRING="_ns3_"