PX4: use RGBLED state to show startup state

solid white while booting, solid red on error

mk/PX4/ROMFS/init.d/rc.APM

@@ -267,14 +267,6 @@ fi
 
 echo "Trying PX4IO board"
 
-# rgbled
-if rgbled start
-then
-   echo "rgbled started OK"
-else
-   echo "Failed to start rgbled driver" >> $logfile
-fi
-
 if mtd start /fs/mtd
 then
     echo "started mtd driver OK"

mk/PX4/ROMFS/init.d/rc.error

@@ -1,5 +1,12 @@
 echo "Error in startup"
+
 tone_alarm MNCC
+
+if [ $HAVE_RGBLED == 1 ]
+then
+        rgbled rgb 16 0 0
+fi
+
 nshterm /dev/ttyACM0 &
 sleep 1
 nshterm /dev/ttyS0 &

mk/PX4/ROMFS/init.d/rcS

@@ -25,6 +25,15 @@ set USB autoconnect
 #
 
 
+if rgbled start
+then
+        set HAVE_RGBLED 1
+        # show startup white
+        rgbled rgb 16 16 16
+else
+        set HAVE_RGBLED 0
+fi
+
 #
 # Try to mount the microSD card.
 #
@@ -40,6 +49,10 @@ else
         set HAVE_MICROSD 0
 	# Play SOS
 	tone_alarm 2
+        if [ $HAVE_RGBLED == 1 ]
+        then
+                rgbled rgb 16 0 0
+        fi
 fi
 
 #