/ { chosen { zephyr,console = &cdc_acm_uart0; zephyr,shell-uart = &cdc_acm_uart0; }; }; &zephyr_udc0 { cdc_acm_uart0: cdc_acm_uart0 { compatible = "zephyr,cdc-acm-uart"; }; }; &flash0 { partitions { compatible = "fixed-partitions"; #address-cells = <1>; #size-cells = <1>; /* Reserve last 64KB for settings storage */ storage_partition: partition@3f0000 { label = "storage"; reg = <0x003f0000 0x00010000>; }; }; }; / { aliases { sw0 = &door_sensor; }; gpio_keys { compatible = "gpio-keys"; door_sensor: door_sensor { gpios = <&gpio0 22 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>; label = "Door Reed Switch"; }; }; };