Update packet.sh if no RTL-SDR, try TXC

groundstation/packet.sh

@@ -157,14 +157,46 @@ echo
 
   echo -e "Auto decoding APRS packets on $frequency Hz"
 
+	timeout 1 rtl_test &> out.txt
+  if [[ $(grep "No supported" out.txt) ]] ; then
+
+    echo "No RTL-SDR detected.  Trying FM TXC"
+
+    gpio -g mode 7 up
+    gpio -g read 7 > out.txt
+    
+    if [[ $(grep "0" out.txt) ]] ; then
+    
+    	echo "FM TXC detected"
+
+      if [[ $(arecord -l | grep "USB Audio Device") ]] ; then
+
+          gpio -g mode 20 out  # set PTT high
+          gpio -g write 20 1
+          gpio -g mode 21 out  # set PD high
+          gpio -g write 21 1
+          
+          setsid direwolf -r 48000 -c /home/pi/CubeSatSim/groundstation/direwolf/direwolf-fm-pacsat-jp14-device.conf  &
+      else
+          echo "No USB Sound Card present - need to plug it in."
+
+      fi
+    
+    else
+    
+    	echo "FM TXC not detected"
+    fi
+
+  else  
+
    # direwolf -r 48000 -c /home/pi/CubeSatSim/groundstation/direwolf/direwolf.conf -t 0 &
     setsid direwolf -r 48000 -c /home/pi/CubeSatSim/groundstation/direwolf/direwolf.conf  &
   
-#fi
+  #fi
   
-#sleep 5
+  #sleep 5
   
-if [ "$autotune" = "1" ]; then
+  if [ "$autotune" = "1" ]; then
     threshold=1
     delay=1
     retries=30
@@ -175,7 +207,7 @@ if [ "$autotune" = "1" ]; then
     confidence=0
     while [ $tries -le $retries ] && [ "$confidence" -le "$threshold" ]; do
   
-#    sleep $delay
+  #    sleep $delay
       source /home/pi/venv/bin/activate
       python3 /home/pi/CubeSatSim/groundstation/auto-tune.py 434900000 n 2> null > /home/pi/CubeSatSim/groundstation/auto-tune.txt
       # echo "auto-tune.txt"
@@ -192,6 +224,8 @@ if [ "$autotune" = "1" ]; then
     else
       echo "Auto tune failed, frequency unchanged"
     fi
+  fi
+
   echo
   echo "If your CubeSatSim is transmitting in APRS mode (mode 1) then you should see packets."
   echo