add new board Adafruit Feather ESP32-S3 Reverse TFT (#7811)

variants/adafruit_feather_esp32s3_reversetft/partitions-4MB-tinyuf2.csv

+# ESP-IDF Partition Table
+# Name,   Type, SubType, Offset,  Size, Flags
+# bootloader.bin,,          0x1000, 32K
+# partition table,          0x8000, 4K
+
+nvs,      data, nvs,      0x9000,  20K,
+otadata,  data, ota,      0xe000,  8K,
+ota_0,    0,    ota_0,   0x10000,  1408K,
+ota_1,    0,    ota_1,  0x170000,  1408K,
+uf2,      app,  factory,0x2d0000,  256K,
+ffat,     data, fat,    0x310000,  960K,

variants/adafruit_feather_esp32s3_reversetft/pins_arduino.h

+#ifndef Pins_Arduino_h
+#define Pins_Arduino_h
+
+#include <stdint.h>
+
+
+#define USB_VID            0x239A
+#define USB_PID            0x8123
+#define USB_MANUFACTURER   "Adafruit"
+#define USB_PRODUCT        "Feather ESP32-S3 Reverse TFT"
+#define USB_SERIAL         "" // Empty string for MAC adddress
+
+
+#define EXTERNAL_NUM_INTERRUPTS 46
+#define NUM_DIGITAL_PINS        48
+#define NUM_ANALOG_INPUTS       20
+
+#define analogInputToDigitalPin(p)  (((p)<20)?(analogChannelToDigitalPin(p)):-1)
+#define digitalPinToInterrupt(p)    (((p)<48)?(p):-1)
+#define digitalPinHasPWM(p)         (p < 46)
+
+#define LED_BUILTIN     13
+
+#define PIN_NEOPIXEL        33
+#define NEOPIXEL_NUM        1     // number of neopixels
+#define NEOPIXEL_POWER      21    // power pin
+#define NEOPIXEL_POWER_ON   HIGH  // power pin state when on
+
+#define TFT_I2C_POWER  7
+#define TFT_CS         42
+#define TFT_RST        41
+#define TFT_DC         40
+#define TFT_BACKLITE   45
+
+static const uint8_t SDA = 3;
+static const uint8_t SCL = 4;
+
+static const uint8_t SS    = 42;
+static const uint8_t MOSI  = 35;
+static const uint8_t SCK   = 36;
+static const uint8_t MISO  = 37;
+
+static const uint8_t A0 = 18;
+static const uint8_t A1 = 17;
+static const uint8_t A2 = 16;
+static const uint8_t A3 = 15;
+static const uint8_t A4 = 14;
+static const uint8_t A5 = 8;
+
+static const uint8_t TX = 39;
+static const uint8_t RX = 38;
+#define TX1 TX
+#define RX1 RX
+
+static const uint8_t T5 = 5;
+static const uint8_t T6 = 6;
+static const uint8_t T8 = 8;
+static const uint8_t T9 = 9;
+static const uint8_t T10 = 10;
+static const uint8_t T11 = 11;
+static const uint8_t T12 = 12;
+static const uint8_t T13 = 13;
+static const uint8_t T14 = 14;
+
+static const uint8_t DAC1 = 17;
+static const uint8_t DAC2 = 18;
+
+#endif /* Pins_Arduino_h */

variants/adafruit_feather_esp32s3_reversetft/variant.cpp

+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2021 Ha Thach (tinyusb.org) for Adafruit Industries
+ *
+ * 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.
+ */
+
+
+#include "esp32-hal-gpio.h"
+#include "pins_arduino.h"
+
+extern "C" {
+
+// Initialize variant/board, called before setup()
+void initVariant(void)
+{
+  // This board has power control pins, and we must set them to output and high
+  // in order to enable the NeoPixels, TFT & I2C
+  pinMode(NEOPIXEL_POWER, OUTPUT);
+  digitalWrite(NEOPIXEL_POWER, HIGH);
+  pinMode(TFT_I2C_POWER, OUTPUT);
+  digitalWrite(TFT_I2C_POWER, HIGH);
+}
+
+}