From 700de9c9f408885277fa1d55f50936c11fa7d3e4 Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Thu, 27 Feb 2025 11:07:52 +0100
Subject: [PATCH] update

---
 loop/SARA_send_data_v2.py | 33 ++++++++++++++++++---------------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/loop/SARA_send_data_v2.py b/loop/SARA_send_data_v2.py
index 7a13040..74e3cb0 100755
--- a/loop/SARA_send_data_v2.py
+++ b/loop/SARA_send_data_v2.py
@@ -95,6 +95,7 @@ import busio
 import re
 import os
 import traceback
+import threading
 import sys
 import sqlite3
 import RPi.GPIO as GPIO
@@ -130,6 +131,9 @@ uSpot_profile_id = 1
 conn = sqlite3.connect("/var/www/nebuleair_pro_4g/sqlite/sensors.db")
 cursor = conn.cursor()
 
+_gpio_lock = threading.Lock()  # Global lock for GPIO access
+
+
 def blink_led(pin, blink_count, delay=1):
     """
     Blink an LED on a specified GPIO pin.
@@ -139,22 +143,21 @@ def blink_led(pin, blink_count, delay=1):
         blink_count (int): Number of times the LED should blink.
         delay (float): Time in seconds for the LED to stay ON or OFF (default is 1 second).
     """
-    # GPIO setup
-    GPIO.setwarnings(False)
-    GPIO.setmode(GPIO.BCM)  # Use BCM numbering
-    GPIO.setup(pin, GPIO.OUT)  # Set the specified pin as an output
+    with _gpio_lock:
+        GPIO.setwarnings(False)
+        GPIO.setmode(GPIO.BCM)  # Use BCM numbering
+        GPIO.setup(pin, GPIO.OUT)  # Ensure pin is set as OUTPUT
 
-    try:
-        for _ in range(blink_count):
-            GPIO.output(pin, GPIO.HIGH)  # Turn the LED on
-            #print(f"LED on GPIO {pin} is ON")
-            time.sleep(delay)  # Wait for the specified delay
-            GPIO.output(pin, GPIO.LOW)  # Turn the LED off
-            #print(f"LED on GPIO {pin} is OFF")
-            time.sleep(delay)  # Wait for the specified delay
-    finally:
-        GPIO.cleanup(pin)  # Clean up the specific pin to reset its state
-        print(f"GPIO {pin} cleaned up")
+        try:
+            for _ in range(blink_count):
+                GPIO.output(pin, GPIO.HIGH)  # Turn LED on
+                time.sleep(delay)
+                GPIO.output(pin, GPIO.LOW)  # Turn LED off
+                time.sleep(delay)
+
+        finally:
+            GPIO.output(pin, GPIO.LOW)  # Ensure LED is off
+            print(f"LED on GPIO {pin} turned OFF (cleanup avoided)")
 
 #get data from config
 def load_config(config_file):