Enable PWM/PPM outputs only after first packet is received.

Author: kh4

RX.h

@@ -261,8 +261,6 @@ void setup()
   RF_channel = 0;
   rfmSetChannel(bind_data.hopchannel[RF_channel]);
 
-  setupPPMout();
-
   //################### RX SYNC AT STARTUP #################
   RF_Mode = Receive;
   to_rx_mode();
@@ -289,10 +287,6 @@ void loop()
     last_pack_time = micros(); // record last package time
     lostpack = 0;
 
-    if (firstpack == 0) {
-      firstpack = 1;
-    }
-
     Red_LED_OFF;
     Green_LED_ON;
 
@@ -315,6 +309,11 @@ void loop()
       sei();
     }
 
+    if (firstpack == 0) {
+      firstpack = 1;
+      setupPPMout();
+    }
+
     if (rx_buf[0] == 0xF5) {
       if (!fs_saved) {
         save_failsafe_values();