Let's just init the status flag every time we send a config update

apps/px4io/px4io.c

@@ -153,9 +153,6 @@ user_start(int argc, char *argv[])
 	/* configure the first 8 PWM outputs (i.e. all of them) */
 	up_pwm_servo_init(0xff);
 
-	/* initialise the registry space */
-	registers_init();
-
 	/* initialise the control inputs */
 	controls_init();
 

apps/px4io/registers.c

@@ -179,12 +179,6 @@ uint16_t		r_page_rc_input_config[MAX_CONTROL_CHANNELS * PX4IO_P_RC_CONFIG_STRIDE
  */
 uint16_t		r_page_servo_failsafe[IO_SERVO_COUNT];
 
-void
-registers_init(void)
-{
-	r_status_flags |= PX4IO_P_STATUS_FLAGS_INIT_OK;
-}
-
 void
 registers_set(uint8_t page, uint8_t offset, const uint16_t *values, unsigned num_values)
 {
@@ -389,6 +383,7 @@ registers_set_one(uint8_t page, uint8_t offset, uint16_t value)
 
 		case PX4IO_P_RC_CONFIG_OPTIONS:
 			value &= PX4IO_P_RC_CONFIG_OPTIONS_VALID;
+			r_status_flags |= PX4IO_P_STATUS_FLAGS_INIT_OK;
 
 			/* set all options except the enabled option */
 			conf[index] = value & ~PX4IO_P_RC_CONFIG_OPTIONS_ENABLED;