2024-08-03 -

modbus_gps001.py

@@ -0,0 +1,232 @@
+#!/usr/bin/env python3
+# -*- coding:utf-8 -*-
+import RPi.GPIO as GPIO
+import paho.mqtt.client as mqtt
+import os
+import minimalmodbus
+import time
+import serial
+from datetime import datetime
+from influxdb_client import InfluxDBClient, Point
+from influxdb_client.client.write_api import SYNCHRONOUS
+import logging
+import subprocess
+
+# Set up logging
+logging.basicConfig(level=logging.DEBUG, format='%(asctime)s - %(levelname)s - %(message)s')
+
+# GPIO configuration
+GPIO.setmode(GPIO.BCM)
+GPIO.setwarnings(False)
+GPIO.cleanup()
+
+# MQTT Broker settings
+mqttBroker = "65.108.199.212"
+myhost = os.uname()[1]
+mqtt_client = mqtt.Client(myhost)
+mqtt_client.connect(mqttBroker, 1883)
+
+# Modbus configuration
+modbus_device = '/dev/modbus'
+mb_address = 1
+sensy_boi = minimalmodbus.Instrument(modbus_device, mb_address)
+sensy_boi.serial.baudrate = 9600
+sensy_boi.serial.bytesize = 8
+sensy_boi.serial.parity = minimalmodbus.serial.PARITY_NONE
+sensy_boi.serial.stopbits = 1
+sensy_boi.serial.timeout = 0.5
+sensy_boi.mode = minimalmodbus.MODE_RTU
+sensy_boi.clear_buffers_before_each_transaction = True
+sensy_boi.close_port_after_each_call = True
+
+# GPS configuration
+gps_device = '/dev/ttyUSB3'
+
+# InfluxDB settings
+INFLUXDB_URL = "http://100.64.024:6"
+INFLUXDB_TOKEN = "IPtqPXbaXuuMHvx_tOt1cmIZfLHucd-9DcepXTVpQc-fNKBhp6pkhyTsq_XnoGXdxwILy5AFFgZ_QUZCE5Jhg=="
+INFLUXDB_ORG = "juandiego"
+INFLUXDB_BUCKET = "gpsdata"
+
+# Initialize InfluxDB client
+influx_client = InfluxDBClient(url=INFLUXDB_URL, token=INFLUXDB_TOKEN, org=INFLUXDB_ORG)
+write_api = influx_client.write_api(write_options=SYNCHRONOUS)
+
+# GPIO pin configuration
+PIN_17 = 17
+LuzPuerta = 18
+GPIO_25 = 25
+GPIO.setup(PIN_17, GPIO.IN)
+GPIO.setup(LuzPuerta, GPIO.OUT)
+GPIO.setup(GPIO_25, GPIO.OUT)
+
+# Pending data list
+pending_data = []
+
+def control_gpio():
+    status_17 = GPIO.input(PIN_17)
+    if status_17 == GPIO.LOW:
+        GPIO.output(LuzPuerta, GPIO.HIGH)  # Red light on
+    else:
+        GPIO.output(LuzPuerta, GPIO.LOW)
+    return status_17
+
+def initialize_gps(gps_ser):
+    """
+    Inicializa el dispositivo GPS enviando los comandos necesarios para configurarlo.
+    """
+    try:
+        # Enviar comandos de configuración al GPS
+        gps_ser.write(b'AT+CGNSPWR=1\r')  # Encender el GPS
+        time.sleep(2)  # Aumentar el tiempo de espera
+        gps_ser.write(b'AT+CGNSSEQ="RMC"\r')  # Configurar la secuencia de datos
+        time.sleep(2)  # Aumentar el tiempo de espera
+        gps_ser.write(b'AT+CGNSTST=1\r')  # Iniciar la transmisión de datos
+        time.sleep(2)  # Aumentar el tiempo de espera
+        
+        # Leer la respuesta del GPS para asegurarse de que está funcionando
+        response = gps_ser.read(100)
+        logging.info(f"GPS initialized with response: {response}")
+        
+    except Exception as e:
+        logging.error(f"Error initializing GPS: {e}")
+
+def read_gps_data(gps_ser):
+    """
+    Lee los datos del GPS y los devuelve como una cadena.
+    """
+    try:
+        gps_ser.write(b'AT+CGNSINF\r')
+        time.sleep(1)
+        response = gps_ser.read(200)
+        logging.info(f"GPS data read: {response}")
+        return response
+    except Exception as e:
+        logging.error(f"Error reading GPS data: {e}")
+        return None
+
+def publish_to_mqtt(topic, payload):
+    """
+    Publica un mensaje en el broker MQTT.
+    """
+    try:
+        mqtt_client.publish(topic, payload)
+        logging.info(f"Published to MQTT topic {topic}: {payload}")
+    except Exception as e:
+        logging.error(f"Error publishing to MQTT: {e}")
+
+def write_to_influxdb(data):
+    """
+    Escribe los datos en InfluxDB.
+    """
+    try:
+        point = Point("gps_data").tag("host", myhost).field("data", data)
+        write_api.write(bucket=INFLUXDB_BUCKET, org=INFLUXDB_ORG, record=point)
+        logging.info(f"Data written to InfluxDB: {data}")
+    except Exception as e:
+        logging.error(f"Error writing to InfluxDB: {e}")
+
+def get_gps_position(gps_ser):
+    """
+    Obtiene la posición GPS.
+    """
+    gps_data = read_gps_data(gps_ser)
+    if gps_data:
+        # Procesar los datos GPS aquí si es necesario
+        return True
+    return False
+
+def reset_usb_ports():
+    """
+    Resetea los puertos USB.
+    """
+    try:
+        subprocess.run(["usbreset", "/dev/bus/usb/001/001"], check=True)
+        logging.info("USB ports reset successfully")
+    except Exception as e:
+        logging.error(f"Error resetting USB ports: {e}")
+
+def reinitialize_devices():
+    """
+    Re-inicializa los dispositivos.
+    """
+    try:
+        global sensy_boi, gps_ser
+        sensy_boi = minimalmodbus.Instrument(modbus_device, mb_address)
+        gps_ser = serial.Serial(gps_device, baudrate=9600, timeout=1)
+        initialize_gps(gps_ser)
+        logging.info("Devices reinitialized successfully")
+    except Exception as e:
+        logging.error(f"Error reinitializing devices: {e}")
+
+def main():
+    try:
+        # Initialize GPS
+        gps_ser = serial.Serial(gps_device, baudrate=9600, timeout=1)
+        initialize_gps(gps_ser)
+
+        reset_counter = 0
+
+        while True:
+            try:
+                # Control GPIO
+                status_17 = control_gpio()
+
+                # Read Modbus data
+                try:
+                    temp = sensy_boi.read_register(0, 1)  # Example register for temperature
+                    hum = sensy_boi.read_register(1, 1)  # Example register for humidity
+
+                    # Try to publish current data
+                    mqtt_client.publish(f"iiot/{myhost}/temperature", temp)
+                    mqtt_client.publish(f"iiot/{myhost}/humidity", hum)
+                    mqtt_client.publish(f"iiot/{myhost}/door/pin17", str(status_17))
+
+                    # Try to publish pending data
+                    for item in pending_data:
+                        mqtt_client.publish(f"iiot/{myhost}/temperature", item["temperature"])
+                        mqtt_client.publish(f"iiot/{myhost}/humidity", item["humidity"])
+                        mqtt_client.publish(f"iiot/{myhost}/door/pin17", item["door_status"])
+                    pending_data.clear()  # Clear the list if all data was published
+
+                except Exception as e:
+                    logging.error(f"Error publishing data to MQTT: {str(e)}")
+                    pending_data.append({
+                        "temperature": temp,
+                        "humidity": hum,
+                        "door_status": str(status_17)
+                    })  # Save data in memory
+
+                # Print processed data
+                logging.info("-------------------------------------")
+                logging.info(f"Temperature = {temp:.1f}°C")
+                logging.info(f"Relative humidity = {hum:.1f}%")
+                logging.info(f"Door status (PIN 17) = {status_17}")
+                logging.info("-------------------------------------")
+
+            except Exception as e:
+                logging.error(f"Error reading Modbus data: {str(e)}")
+
+            # Get GPS position
+            if not get_gps_position(gps_ser):
+                logging.warning("Failed to get GPS position")
+
+            reset_counter += 1
+            if reset_counter >= 60:  # Reset every 30 minutes (60 * 30 seconds)
+                reset_usb_ports()
+                reinitialize_devices()
+                reset_counter = 0
+
+            time.sleep(30)
+
+    except KeyboardInterrupt:
+        logging.info("Program interrupted by user")
+    except Exception as e:
+        logging.error(f"Unexpected error: {str(e)}")
+    finally:
+        GPIO.cleanup()
+        gps_ser.close()
+        influx_client.close()
+
+if __name__ == "__main__":
+    main()