Deal more gracefully with the case where the incoming PPM stream has more than 8 channels encoded.

This makes it possible to move one resistor on the APM board and feed it PPM directly from a receiver emitting a PPM stream.



git-svn-id: https://arducopter.googlecode.com/svn/trunk@1498 f9c3cf11-9bcb-44bc-f272-b75c42450872

libraries/APM_RC/APM_RC.cpp

@@ -50,11 +50,12 @@ ISR(TIMER4_CAPT_vect)
     PPM_Counter=0;
   else
     {
-    PPM_Counter &= 0x07;  // For safety only (limit PPM_Counter to 7)
+      if (PPM_Counter < (sizeof(PWM_RAW) / sizeof(PWM_RAW[0]))) {
 	PWM_RAW[PPM_Counter++]=Pulse_Width;  //Saving pulse. 
 	if (PPM_Counter >= NUM_CHANNELS)
 	  radio_status = 1;
       }
+    }
   ICR4_old = Pulse;
 }