{ "build": { "core": "esp32", "extra_flags": "-DARDUINO_M5Stack_CoreInk", "f_cpu": "240000000L", "f_flash": "40000000L", "flash_mode": "dio", "mcu": "esp32", "variant": "m5stack_coreink" }, "connectivity": [ "wifi", "bluetooth", "ethernet", "can" ], "frameworks": [ "arduino", "espidf" ], "name": "M5Stack-Core Ink", "upload": { "flash_size": "4MB", "maximum_ram_size": 327680, "maximum_size": 4194304, "require_upload_port": true, "speed": 460800 }, "url": "http://www.m5stack.com", "vendor": "M5Stack" }