fix missing board config

boards/lilygo-t-display-s3-long.json

@@ -0,0 +1,49 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "esp32s3_out.ld",
+      "memory_type": "qio_opi",
+      "partitions": "default_16MB.csv"
+    },
+    "core": "esp32",
+    "extra_flags": [
+      "-DARDUINO_ESP32S3_DEV",
+      "-DARDUINO_USB_MODE=1",
+      "-DARDUINO_USB_CDC_ON_BOOT=1",
+      "-DARDUINO_RUNNING_CORE=1",
+      "-DARDUINO_EVENT_RUNNING_CORE=1"
+    ],
+    "f_cpu": "240000000L",
+    "f_flash": "80000000L",
+    "flash_mode": "qio",
+    "hwids": [
+      [
+        "0x303A",
+        "0x1001"
+      ]
+    ],
+    "mcu": "esp32s3",
+    "variant": "esp32s3"
+  },
+  "connectivity": [
+    "wifi",
+    "bluetooth"
+  ],
+  "debug": {
+    "openocd_target": "esp32s3.cfg"
+  },
+  "frameworks": [
+    "arduino",
+    "espidf"
+  ],
+  "name": "LilyGo-T-Display-S3-long",
+  "upload": {
+    "flash_size": "16MB",
+    "maximum_ram_size": 327680,
+    "maximum_size": 16777216,
+    "require_upload_port": true,
+    "speed": 921600
+  },
+  "url": "https://www.lilygo.cc/products/t-display-s3-long",
+  "vendor": "LilyGo"
+}

platformio.ini

@@ -1,5 +1,8 @@
 ; https://docs.platformio.org/en/latest/platforms/espressif32.html
 
+[platformio]
+boards_dir = ./boards
+
 [env]
 build_flags =
     ; to use e.g. as part of the firmware name 
@@ -157,7 +160,7 @@ lib_deps =
 ; repository: https://github.com/Xinyuan-LilyGO/T-Display-S3-Long
 ; Buy and support mcuw on aliexpress (affiliate link): https://s.click.aliexpress.com/e/_DEv67TX
 [env:lilygo-t-display-s3-long]
-board = esp32r8
+board = lilygo-t-display-s3-long
 board_build.partitions = huge_app.csv
 build_flags =
     ${esp32s3.build_flags}