{ "build": { "core": "stm32", "cpu": "cortex-m4", "extra_flags": "-DSTM32F401xC -DSTM32F4xx", "f_cpu": "84000000L", "mcu": "stm32f401rct6", "product_line": "STM32F401xC", "variant": "MARLIN_F401RC" }, "debug": { "jlink_device": "STM32F401RC", "openocd_target": "stm32f4x", "svd_path": "STM32F401x.svd" }, "frameworks": [ "arduino", "cmsis", "spl", "stm32cube", "libopencm3" ], "name": "STM32F401RC (64k RAM. 256k Flash)", "upload": { "maximum_ram_size": 65536, "maximum_size": 262144, "protocol": "serial", "protocols": [ "blackmagic", "dfu", "jlink", "serial", "stlink" ] }, "url": "https://www.st.com/en/microcontrollers-microprocessors/stm32f401rc.html", "vendor": "Generic" }