Build fix, added command line switch norc to disable RC

src/drivers/px4io/px4io.cpp

@@ -175,6 +175,11 @@ public:
 	 */
 	void			print_status();
 
+	/**
+	 * Disable RC input handling
+	 */
+	int			disable_rc_handling();
+
 	/**
 	 * Set the DSM VCC is controlled by relay one flag
 	 *
@@ -276,6 +281,11 @@ private:
 	 */
 	int			io_get_status();
 
+	/**
+	 * Disable RC input handling
+	 */
+	int			io_disable_rc_handling();
+
 	/**
 	 * Fetch RC inputs from IO.
 	 *
@@ -853,6 +863,12 @@ PX4IO::io_set_arming_state()
 	return io_reg_modify(PX4IO_PAGE_SETUP, PX4IO_P_SETUP_ARMING, clear, set);
 }
 
+int
+PX4IO::io_disable_rc_handling()
+{
+	return io_disable_rc_handling();
+}
+
 int
 PX4IO::io_disable_rc_handling()
 {
@@ -1785,6 +1801,16 @@ start(int argc, char *argv[])
 		errx(1, "driver init failed");
 	}
 
+	/* disable RC handling on request */
+	if (argc > 0 && !strcmp(argv[0], "norc")) {
+		
+		if(g_dev->disable_rc_handling())
+			warnx("Failed disabling RC handling");
+
+	} else {
+		warnx("unknown argument: %s", argv[0]);
+	}
+
 	int dsm_vcc_ctl;
 
 	if (param_get(param_find("RC_RL1_DSM_VCC"), &dsm_vcc_ctl) == OK) {