CONFIG_USB_DEVICE_STACK=y CONFIG_USB_DEVICE_PRODUCT="Zephyr USB shell sample" CONFIG_SHELL_BACKEND_SERIAL_CHECK_DTR=y CONFIG_USB_CDC_ACM_LOG_LEVEL_OFF=y CONFIG_UART_LINE_CTRL=y CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=n # POSIX_TIMERS requires an embedded C library while the native USB driver is incompatible with it. # So let's disable it. Once USB_NATIVE_POSIX supports embedded C libraries this can be removed. CONFIG_POSIX_API=n CONFIG_POSIX_TIMERS=n # DATE_SHELL requires POSIX_TIMERS CONFIG_DATE_SHELL=n