platform-espressif32/boards/esp32-solo1.json

{
  "build": {
    "core": "esp32",
    "extra_flags": "-DARDUINO_ESP32_DEV -DARDUINO_USB_CDC_ON_BOOT=0 -DCORE32SOLO1",
    "f_cpu": "160000000L",
    "f_flash": "40000000L",
    "flash_mode": "dio",
    "mcu": "esp32",
    "variant": "esp32"
  },
  "connectivity": [
    "wifi",
    "bluetooth",
    "ethernet",
    "can"
  ],
  "debug": {
    "openocd_target": "esp32-solo-1.cfg"
  },
  "frameworks": [
    "arduino",
    "espidf"
  ],
  "name": "Espressif Generic ESP32-solo1 4M Flash",
  "upload": {
    "flash_size": "4MB",
    "maximum_ram_size": 327680,
    "maximum_size": 4194304,
    "require_upload_port": true,
    "speed": 460800
  },
  "espidf": {
    "custom_sdkconfig": [
      "CONFIG_FREERTOS_UNICORE=y",
      "# CONFIG_BOOTLOADER_SPI_CUSTOM_WP_PIN is not set",
      "CONFIG_BOOTLOADER_SPI_WP_PIN=7"
    ]
  },
  "url": "https://www.espressif.com/sites/default/files/documentation/esp32-solo-1_datasheet_en.pdf",
  "vendor": "Espressif"
}