Fix lora receiver

esp32-lora/lora_receiver.py

@@ -1,8 +1,21 @@
 import serial
+import json
+import re
 
-ser = serial.Serial('/dev/ttyUSB1', 57600, timeout=1)
+ser = serial.Serial('/dev/ttyUSB1', 9600, timeout=1)
+
+# Regex to capture JSON object
+json_pattern = re.compile(r'\{.*\}')
 
 while True:
-    line = ser.readline()
-    if line:
-        print("Received:", line.decode('utf-8', errors='ignore'))
+    line = ser.readline().decode('utf-8', errors='ignore').strip()
+    if not line:
+        continue
+
+    match = json_pattern.search(line)
+    if match:
+        try:
+            data = json.loads(match.group())
+            print("Received JSON:", data)
+        except json.JSONDecodeError:
+            pass  # ignore lines that aren't valid JSON