{ "build": { "arduino": { "ldscript": "esp32_out.ld" }, "core": "esp32", "extra_flags": "-DARDUINO_BPI_BIT", "f_cpu": "160000000L", "f_flash": "80000000L", "flash_mode": "dio", "mcu": "esp32", "variant": "bpi-bit" }, "connectivity": [ "wifi", "bluetooth", "ethernet", "can" ], "frameworks": [ "arduino", "espidf" ], "name": "BPI-Bit", "upload": { "flash_size": "4MB", "maximum_ram_size": 327680, "maximum_size": 4194304, "require_upload_port": true, "speed": 460800 }, "url": "https://en.wikipedia.org/wiki/ESP32", "vendor": "BPI Tech" }