first commit

SARA/MQTT/publish.py

@@ -0,0 +1,89 @@
+'''
+Script to publish a message via MQTT 
+
+
+/usr/bin/python3 /var/www/nebuleair_pro_4g/SARA/MQTT/publish.py ttyAMA2 Hello 2
+
+'''
+
+import serial
+import time
+import sys
+import json
+
+parameter = sys.argv[1:]  # Exclude the script name
+port='/dev/'+parameter[0] # ex: ttyAMA2
+message = parameter[1]  # ex: Hello 
+timeout = float(parameter[2])  # ex:2
+
+yellow_color = "\033[33m"  # ANSI escape code for yellow
+red_color = "\033[31m"     # ANSI escape code for red
+reset_color = "\033[0m"   # Reset color to default
+green_color = "\033[32m"   # Green
+
+def read_complete_response(serial_connection, timeout=2, end_of_response_timeout=2):
+    response = bytearray()
+    serial_connection.timeout = timeout
+    end_time = time.time() + end_of_response_timeout
+
+    while True:
+        if serial_connection.in_waiting > 0:
+            data = serial_connection.read(serial_connection.in_waiting)
+            response.extend(data)
+            end_time = time.time() + end_of_response_timeout  # Reset timeout on new data
+        elif time.time() > end_time:
+            break
+        time.sleep(0.1)  # Short sleep to prevent busy waiting
+
+    # Decode the response and filter out empty lines
+    decoded_response = response.decode('utf-8')
+    non_empty_lines = "\n".join(line for line in decoded_response.splitlines() if line.strip())     
+
+    # Add yellow color to the output
+    
+    colored_output = f"{yellow_color}{non_empty_lines}\n{reset_color}"
+
+    return colored_output
+
+
+#get baudrate
+def load_config(config_file):
+    try:
+        with open(config_file, 'r') as file:
+            config_data = json.load(file)
+        return config_data
+    except Exception as e:
+        print(f"Error loading config file: {e}")
+        return {}
+
+# Define the config file path
+config_file = '/var/www/nebuleair_pro_4g/config.json'
+# Load the configuration data
+config = load_config(config_file)
+# Access the shared variables
+baudrate = config.get('SaraR4_baudrate', 115200)
+
+ser = serial.Serial(
+    port=port,  #USB0 or ttyS0
+    baudrate=baudrate, #115200 ou 9600
+    parity=serial.PARITY_NONE, #PARITY_NONE, PARITY_EVEN or PARITY_ODD
+    stopbits=serial.STOPBITS_ONE,
+    bytesize=serial.EIGHTBITS,
+    timeout = timeout
+)
+
+command = f'AT+UMQTTC=2,0,0,"notif","{message}"\r'
+ser.write((command + '\r').encode('utf-8'))
+
+try:
+     response_SARA_1 = read_complete_response(ser)
+    print(response_SARA_1) 
+    
+except serial.SerialException as e:
+    print(f"Error: {e}")
+
+finally:
+    if ser.is_open:
+        ser.close()
+        #print("Serial closed")
+