Update atcmd

socat-at-bridge/atcmd

@@ -1,27 +1,17 @@
 #!/bin/bash
 
 DEVICE=/dev/ttyOUT2
+BAUD=115200
 
 # Function to setup device communication parameters
 setup_device() {
-    stty -F $DEVICE cs8 115200 ignbrk -brkint -icrnl -imaxbel \
+    stty -F $DEVICE cs8 $BAUD ignbrk -brkint -icrnl -imaxbel \
         -opost -onlcr -isig -icanon -iexten -echo -echoe -echok \
         -echoctl -echoke noflsh -ixon -crtscts
 }
 
-# Function to read from device until "OK" or "ERROR" is found
-read_response() {
-    {
-        while IFS= read -r line; do
-            echo -e "\033[0;32m$line\033[0m"
-            if [[ "$line" == *"OK" || "$line" == *"ERROR" ]]; then
-                break
-            fi
-        done < "$DEVICE"
-    } &
-    READ_PID=$!
-    wait $READ_PID
-}
+# Prepare the device for communication
+setup_device
 
 echo -e "\033[0;36mType 'exit' to end the session.\033[0m"
 while true; do
@@ -30,10 +20,36 @@ while true; do
 
     if [[ "$user_input" == "exit" ]]; then
         echo -e "\033[0;32mExiting...\033[0m"
-        exit 0
+        break
     fi
 
-    setup_device
+    # Clear the device buffer before sending a new command
+    echo -n > $DEVICE
+
+    # Send the AT command
     echo -e "$user_input\r" > $DEVICE
-    read_response
+
+    # Use a temporary file to capture the command output
+    tmpfile=$(mktemp)
+    
+    # Start reading the device output to the temporary file
+    cat $DEVICE > "$tmpfile" &
+    CAT_PID=$!
+
+    # Monitor the output file for "OK" or "ERROR"
+    while ! grep -qe "OK" -e "ERROR" "$tmpfile"; do
+        sleep 1
+    done
+
+    # Kill the `cat` process after capturing the response
+    kill $CAT_PID
+    wait $CAT_PID 2>/dev/null
+
+    # Display the response
+    cat "$tmpfile" | while IFS= read -r line; do
+        echo -e "\033[0;32m$line\033[0m"
+    done
+
+    # Clean up
+    rm "$tmpfile"
 done