Update transmit.py FC send stored image if no camera

transmit.py

@@ -136,10 +136,17 @@ def increment_mode():
 		print("can't write to .mode file")
 		
 def camera_photo():	
-	
+	stored_image = False
+	try:
 		system("raspistill -o /home/pi/CubeSatSim/camera_out.jpg -w 320 -h 256") #  > /dev/null 2>&1")
+		f = open("/home/pi/CubeSatSim/camera_out.jpg")
+		f.close()
 		print("Photo taken")
-
+	except:
+		system("cp /home/pi/CubeSatSim/sstv//sstv_image_2_320_x_256.jpeg /home/pi/CubeSatSim/camera_out.jpg")
+		print("Using stored image")
+		stored_image = True
+	if (stored_image == False):	
 		file='/home/pi/CubeSatSim/camera_out.jpg'
 		font1 = ImageFont.truetype('DejaVuSerif.ttf', 20)
 		font2 = ImageFont.truetype('DejaVuSerif-Bold.ttf', 16)