2024-07-12 -

GPS2.py

@@ -1,18 +1,24 @@
 #!/usr/bin/python
 # -*- coding:utf-8 -*-
 import RPi.GPIO as GPIO
-import sqlite3
+import paho.mqtt.client as mqtt
 import serial
 import time, os
 
-# SQLite Database settings
+# MQTT Broker settings
-db_file = "gps_coordinates.db"
+
-conn = sqlite3.connect(db_file)
+mqttBroker ="65.108.199.212"
-cursor = conn.cursor()
+myhost = os.uname()[1]
+client = mqtt.Client(myhost)
+client.connect(mqttBroker, 1883)
 
 ser = serial.Serial('/dev/ttyS0',115200)
 ser.flushInput()
 
+rec_buff = ''
+rec_buff2 = ''
+time_count = 0
+
 def send_at(command,back,timeout):
     rec_buff = ''
     ser.write((command+'\r\n').encode())
@@ -29,7 +35,7 @@ def send_at(command,back,timeout):
             print(rec_buff.decode())
             return 1
     else:
-        print('GPS is not ready')
+        print('GPS no está listo')
         return 0
 
 def get_gps_position():
@@ -48,22 +54,13 @@ def get_gps_position():
 				rec_null = False
 				time.sleep(1)
 			else:
-                # Extract GPS coordinates from the response
+			# Parse GPS data
-                gps_data = rec_buff.split(',')
+                            gps_data = rec_buff.decode().split('+CGPSINFO: ')[1].strip()
-                latitude = gps_data[2]
+                            lat, lon = parse_gps_data(gps_data)
-                longitude = gps_data[3]
+                            if lat and lon:
-
+                                # Send GPS coordinates to MQTT broker
-                # Connect to the SQLite database
+                                mqtt_payload = f"{lat},{lon}"
-                conn = sqlite3.connect('gps_coordinates.db')
+                                client.publish("iiot/"+ myhost +"/gps", mqtt_payload)
-                c = conn.cursor()
-
-                # Insert the GPS coordinates into the database
-                c.execute("INSERT INTO gps_coordinates (latitude, longitude) VALUES (?, ?)", (latitude, longitude))
-
-                # Commit and close the connection
-                conn.commit()
-                conn.close()
-
 		else:
 			print('error %d'%answer)
 			rec_buff = ''
@@ -71,20 +68,51 @@ def get_gps_position():
 			return False
 		time.sleep(1.5)
 
-    return True
+def parse_gps_data(gps_data):
+    parts = gps_data.split(',')
+    if len(parts) >= 4:
+        lat = convert_to_degrees(parts[0])
+        lon = convert_to_degrees(parts[2])
+        return lat, lon
+    return None, None
 
-def extract_gps_info(rec_buff):
+def convert_to_degrees(raw_value):
-    # Implement this function based on the format of rec_buff
+    if raw_value:
-    # Example: gps_info = rec_buff.split(',')[2]
+        degree = float(raw_value[:2])
-    return gps_info
+        minute = float(raw_value[2:])
+        return degree + (minute / 60.0)
+    return None
 
-def store_gps_coordinates(gps_info):
+def power_on(power_key):
-    cursor.execute("INSERT INTO coordinates (latitude, longitude) VALUES (?, ?)", gps_info)
+	print('SIM7600X is starting:')
-    conn.commit()
+	GPIO.setmode(GPIO.BCM)
+	GPIO.setwarnings(False)
+	GPIO.setup(power_key,GPIO.OUT)
+	time.sleep(0.1)
+	GPIO.output(power_key,GPIO.HIGH)
+	time.sleep(2)
+	GPIO.output(power_key,GPIO.LOW)
+	time.sleep(20)
+	ser.flushInput()
+	print('SIM7600X is ready')
 
-# Main program
+def power_down(power_key):
-if __name__ == '__main__':
+	print('SIM7600X is loging off:')
-    # Create the SQLite table if it doesn't exist
+	GPIO.output(power_key,GPIO.HIGH)
-    cursor.execute('''CREATE TABLE IF NOT EXISTS coordinates (id INTEGER PRIMARY KEY AUTOINCREMENT, latitude REAL, longitude REAL)''')
+	time.sleep(3)
-    while True:
+	GPIO.output(power_key,GPIO.LOW)
+	time.sleep(18)
+	print('Good bye')
+
+try:
+	#power_on(power_key)
 	get_gps_position()
+	#power_down(power_key)
+except:
+	if ser != None:
+		ser.close()
+	#power_down(power_key)
+	GPIO.cleanup()
+if ser != None:
+		ser.close()
+		GPIO.cleanup()	

GPS3.py

@@ -0,0 +1,118 @@
+#!/usr/bin/python
+# -*- coding:utf-8 -*-
+import RPi.GPIO as GPIO
+import serial
+import time
+import paho.mqtt.client as mqtt
+
+ser = serial.Serial('/dev/ttyS0', 115200)
+ser.flushInput()
+
+# MQTT Configuration
+MQTT_BROKER = "65.108.199.212"
+MQTT_PORT = 1883
+MQTT_TOPIC = "gps/coordinates"
+
+# Create MQTT client
+client = mqtt.Client()
+
+def connect_mqtt():
+    client.connect(MQTT_BROKER, MQTT_PORT)
+    client.loop_start()
+
+def send_at(command, back, timeout):
+    rec_buff = ''
+    ser.write((command+'\r\n').encode())
+    time.sleep(timeout)
+    if ser.inWaiting():
+        time.sleep(0.01)
+        rec_buff = ser.read(ser.inWaiting())
+    if rec_buff != '':
+        if back not in rec_buff.decode():
+            print(command + ' ERROR')
+            print(command + ' back:\t' + rec_buff.decode())
+            return 0, rec_buff
+        else:
+            print(rec_buff.decode())
+            return 1, rec_buff
+    else:
+        print('GPS no está listo')
+        return 0, rec_buff
+
+def get_gps_position():
+    rec_null = True
+    answer = 0
+    print('Iniciando GPS')
+    send_at('AT+CGPS=1,1','OK',1)
+    time.sleep(2)
+    while rec_null:
+        answer, rec_buff = send_at('AT+CGPSINFO','+CGPSINFO: ',1)
+        if answer == 1:
+            if ',,,,,,' in rec_buff.decode():
+                print('GPS no está listo')
+            else:
+                # Parse GPS data
+                gps_data = rec_buff.decode().split('+CGPSINFO: ')[1].strip()
+                lat, lon = parse_gps_data(gps_data)
+                if lat and lon:
+                    # Send GPS coordinates to MQTT broker
+                    mqtt_payload = f"{lat},{lon}"
+                    client.publish(MQTT_TOPIC, mqtt_payload)
+                    print(f"Sent to MQTT: {mqtt_payload}")
+                rec_null = False
+        else:
+            print('error %d'%answer)
+            send_at('AT+CGPS=0','OK',1)
+            return False
+        time.sleep(1.5)
+
+def parse_gps_data(gps_data):
+    parts = gps_data.split(',')
+    if len(parts) >= 4:
+        lat = convert_to_degrees(parts[0])
+        lon = convert_to_degrees(parts[2])
+        return lat, lon
+    return None, None
+
+def convert_to_degrees(raw_value):
+    if raw_value:
+        degree = float(raw_value[:2])
+        minute = float(raw_value[2:])
+        return degree + (minute / 60.0)
+    return None
+
+def power_on(power_key):
+    print('SIM7600X is starting:')
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setwarnings(False)
+    GPIO.setup(power_key,GPIO.OUT)
+    time.sleep(0.1)
+    GPIO.output(power_key,GPIO.HIGH)
+    time.sleep(2)
+    GPIO.output(power_key,GPIO.LOW)
+    time.sleep(20)
+    ser.flushInput()
+    print('SIM7600X is ready')
+
+def power_down(power_key):
+    print('SIM7600X is loging off:')
+    GPIO.output(power_key,GPIO.HIGH)
+    time.sleep(3)
+    GPIO.output(power_key,GPIO.LOW)
+    time.sleep(18)
+    print('Good bye')
+
+try:
+    power_key = 6  # Assuming power key is connected to GPIO 6
+    connect_mqtt()
+    power_on(power_key)
+    get_gps_position()
+    power_down(power_key)
+except Exception as e:
+    print(f"An error occurred: {e}")
+finally:
+    if ser is not None:
+        ser.close()
+    client.loop_stop()
+    client.disconnect()
+    GPIO.cleanup()