ok = open_serial(1, 2, 115200); // port 2, baudrate 115200 if ok ~= 0 then error('Unable to open serial port, please check'); end for i = 1:1000 //Run for 1000 iterations val = cmd_digital_in(1, 12) cmd_arduino_meter(val); if val == 0 cmd_digital_out(1, 9, 0) else cmd_digital_out(1, 9, 1) end end close_serial(1);