/ {
    chosen {
        zephyr,console = &rtt;
        zephyr,shell-uart = &rtt; // If using shell
    };

    rtt: rtt {
        compatible = "segger,rtt-uart";
        #address-cells = <1>;
        #size-cells = <0>;
        label = "RTT";
        status = "okay";
    };
};
&usart1 {
	modbus0 {
		compatible = "zephyr,modbus-serial";
		status = "okay";
	};
	status = "okay";
};