# Drivers and peripherals CONFIG_I2C=n CONFIG_WATCHDOG=n CONFIG_GPIO=n CONFIG_PINCTRL=n CONFIG_SPI=n CONFIG_FLASH=n CONFIG_UART_USE_RUNTIME_CONFIGURE=n CONFIG_UART_INTERRUPT_DRIVEN=n # libs CONFIG_MINIMAL_LIBC=y CONFIG_CBPRINTF_NANO=y CONFIG_CBPRINTF_REDUCED_INTEGRAL=y CONFIG_CBPRINTF_LIBC_SUBSTS=n # build CONFIG_FPU=n CONFIG_SIZE_OPTIMIZATIONS=y # Boot CONFIG_BOOT_DELAY=0 CONFIG_SAMPLE_DO_OUTPUT=y