check for initial_image.jpg and copy and transmit as first SSTV image

rpitx.py

@@ -32,8 +32,11 @@ GPIO.output(27, 0)
 
 print(transmit)
 
-file = open("/home/pi/CubeSatSim/sim.cfg")
-callsign = file.readline().split(" ")[0]
+try:
+	file = open("/home/pi/CubeSatSim/sim.cfg")
+	callsign = file.readline().split(" ")[0]
+except:
+	callsign = "AMSAT"
 print(callsign)
 
 #GPIO.output(27, 1);
@@ -80,28 +83,38 @@ if __name__ == "__main__":
 					print("No camera")
 					camera_present = 0
 
-				while 1:
-					GPIO.output(txLed, txLedOff)
-					if (camera_present == 1):
-						GPIO.output(txLed, txLedOn)
+#				while 1:
+				GPIO.output(txLed, txLedOff)
+				if (camera_present == 1):
+					try:
+						file = open("/home/pi/CubeSatSim/initial_image.jpg")
+						system("cp /home/pi/CubeSatSim/initial_image.jpg /home/pi/CubeSatSim/camera_out.jpg")
+						print("Initial image copied")
+					except:
+						print("No initial image")
+						system("raspistill -o /home/pi/camera_out.jpg -w 320 -h 256") #  > /dev/null 2>&1")
+						print("Photo taken")
+					while 1:
+#						GPIO.output(txLed, txLedOn)
 						system("/home/pi/PiSSTVpp/pisstvpp -r 48000 -p s2 /home/pi/camera_out.jpg") #  > /dev/null 2>&1")
-						GPIO.output(txLed, txLedOff)
+#							GPIO.output(txLed, txLedOff)
 						print ("Sending SSTV photo")
 						time.sleep(1)
-						system("sudo killall -9 rpitx > /dev/null 2>&1")
-						system("sudo killall -9 csdr > /dev/null 2>&1")
-						system("sudo killall -9 cat > /dev/null 2>&1")
+#						system("sudo killall -9 rpitx > /dev/null 2>&1")
+#						system("sudo killall -9 csdr > /dev/null 2>&1")
+#						system("sudo killall -9 cat > /dev/null 2>&1")
 						GPIO.output(txLed, txLedOn);		
 						system("cat /home/pi/camera_out.jpg.wav | csdr convert_i16_f | csdr gain_ff 14000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f 434.9e3") #  > /dev/null 2>&1")
+						GPIO.output(txLed, txLedOff)
 						system("raspistill -o /home/pi/camera_out.jpg -w 320 -h 256") #  > /dev/null 2>&1")
 						print("Photo taken")
-					else:
-						system("(while true; do (sleep 5 && cat /home/pi/CubeSatSim/wav/sstv.wav); done) | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f 434.9e3 &")
-						while 1:
-							GPIO.output(txLed, txLedOn)
-							time.sleep(60)
-							GPIO.output(txLed, txLedOff)
-							time.sleep(1)
+				else:
+					system("(while true; do (sleep 5 && cat /home/pi/CubeSatSim/wav/sstv.wav); done) | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f 434.9e3 &")
+					while 1:
+						GPIO.output(txLed, txLedOn)
+						time.sleep(60)
+						GPIO.output(txLed, txLedOff)
+						time.sleep(1)
 
 			elif (('b' == sys.argv[1]) or ('bpsk' in sys.argv[1])):
 				print("BPSK")