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Add DFRobot LoRaWAN ESP32-S3 Companion BLE firmware - #3664

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Add support for the DFRobot LoRaWAN ESP32-S3 Development Board (SKU DFR1195): ESP32-S3-WROOM-1-N4, SX1262, and a 0.96-inch 160×80 ST7735S display.

Product page: https://www.dfrobot.com/product-2933.html

  • New variant variants/dfrobot_lorawan_esp32s3 and board definition boards/dfrobot_lorawan_esp32s3.json (4 MB flash, no PSRAM).
  • Companion BLE firmware environment: DFRobot_LoRaWAN_ESP32S3_companion_radio_ble.
  • The SX1262 and the display are on separate SPI controllers (FSPI and HSPI). ST7735Display uses that HSPI bus and the 160×80 init sequence only when DFROBOT_LORAWAN_ESP32S3 is defined, so existing ST7735 boards are unchanged.

Add a board variant for the DFRobot DFR1195 (ESP32-S3-WROOM-1-N4, SX1262, 80x160 ST7735S) and a Companion BLE environment. The display and radio use separate SPI controllers: the SX1262 is on FSPI and the ST7735 is on HSPI. ST7735Display selects that HSPI bus and the 160x80 init sequence only when DFROBOT_LORAWAN_ESP32S3 is defined.

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