From 07fc9aeb7f667ba17206878716776e1d5d463a60 Mon Sep 17 00:00:00 2001
From: Alan Johnston <alan.b.johnston@gmail.com>
Date: Wed, 29 Oct 2025 14:14:23 -0400
Subject: [PATCH] Update fctelem.sh add auto-tune

---
 groundstation/fctelem.sh | 40 +++++++++++++++++++++++++++++++++++++++-
 1 file changed, 39 insertions(+), 1 deletion(-)

diff --git a/groundstation/fctelem.sh b/groundstation/fctelem.sh
index 4beb88a3..c2682806 100755
--- a/groundstation/fctelem.sh
+++ b/groundstation/fctelem.sh
@@ -80,8 +80,9 @@ else
     echo
 fi
 
+autotune=0
 
-frequency=$(zenity --timeout=10 --list 2>/dev/null --width=410 --height=180 --title="FUNcube Telem Decoding" --text="Choose the frequency for FUNcube decoding:" --column="kHz" --column="Use" 434900 "CubeSatSim" Other "Choose another frequency")
+frequency=$(zenity --timeout=10 --list 2>/dev/null --width=410 --height=220 --title="FUNcube Telem Decoding" --text="Choose the frequency for FUNcube decoding:" --column="kHz" --column="Use" 434900 "CubeSatSim" Auto-tune "CubeSatSim Auto-tune" Other "Choose another frequency")
 
 echo $frequency
 
@@ -96,6 +97,11 @@ if [ "$frequency" = "434900" ]; then
 
 	frequency=434900000
 
+elif [ "$frequency" = "Auto-tune" ]; then
+
+	frequency=434900000
+	autotune=1
+
 elif [ "$frequency" = "Other" ]; then
 
 	echo
@@ -110,6 +116,38 @@ elif [ "$frequency" = "Other" ]; then
 
 fi
 
+if [ "$autotune" = "1" ]; then
+  threshold=1
+  delay=5
+  retries=5
+
+  echo "Starting Auto-tune scanning"
+  echo "Scan will stop when confidence exceeds threshold value of" $threshold "or after" $retries "retries"
+  tries=0
+  confidence=0
+  delay=$((delay-2))  # subtract 2 second built in delay
+  while [ $tries -le $retries ] && [ "$confidence" -le "$threshold" ]; do
+
+    sleep $delay
+    source /home/pi/venv/bin/activate
+    python3 /home/pi/CubeSatSim/groundstation/auto-tune.py 434900000 n 2> null > /home/pi/CubeSatSim/groundstation/auto-tune.txt
+    # echo "auto-tune.txt"
+    # cat /home/pi/CubeSatSim/groundstation/auto-tune.txt
+    confidence=$(awk '{print $2}' /home/pi/CubeSatSim/groundstation/auto-tune.txt)
+    echo "Auto tune confidence:" $confidence
+    tries=$((tries+1))
+
+  done
+  
+  if [ "$confidence" -gt "$threshold" ]; then
+    frequency=$(awk '{print $1}' /home/pi/CubeSatSim/groundstation/auto-tune.txt)
+    echo "Auto tune frequency:" $frequency
+  else
+    echo "Auto tune failed, frequency unchanged"
+  fi
+
+fi
+
 echo "Frequency is" $frequency
 echo
 echo "If your CubeSatSim is transmitting in FUNcube mode (mode 7) you should get some frames after 30 seconds"