2024-07-12 -
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140
GPS2.py
140
GPS2.py
@ -1,18 +1,24 @@
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#!/usr/bin/python
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# -*- coding:utf-8 -*-
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import RPi.GPIO as GPIO
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import sqlite3
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import paho.mqtt.client as mqtt
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import serial
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import time, os
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# SQLite Database settings
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db_file = "gps_coordinates.db"
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conn = sqlite3.connect(db_file)
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cursor = conn.cursor()
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# MQTT Broker settings
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mqttBroker ="65.108.199.212"
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myhost = os.uname()[1]
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client = mqtt.Client(myhost)
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client.connect(mqttBroker, 1883)
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ser = serial.Serial('/dev/ttyS0',115200)
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ser.flushInput()
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rec_buff = ''
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rec_buff2 = ''
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time_count = 0
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def send_at(command,back,timeout):
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rec_buff = ''
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ser.write((command+'\r\n').encode())
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@ -29,62 +35,84 @@ def send_at(command,back,timeout):
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print(rec_buff.decode())
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return 1
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else:
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print('GPS is not ready')
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print('GPS no está listo')
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return 0
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def get_gps_position():
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rec_null = True
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answer = 0
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print('Iniciando GPS')
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rec_buff = ''
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send_at('AT+CGPS=1,1','OK',1)
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time.sleep(2)
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while rec_null:
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answer = send_at('AT+CGPSINFO','+CGPSINFO: ',1)
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if 1 == answer:
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answer = 0
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if ',,,,,,' in rec_buff:
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print('GPS no está listo')
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rec_null = False
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time.sleep(1)
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else:
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# Extract GPS coordinates from the response
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gps_data = rec_buff.split(',')
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latitude = gps_data[2]
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longitude = gps_data[3]
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rec_null = True
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answer = 0
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print('Iniciando GPS')
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rec_buff = ''
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send_at('AT+CGPS=1,1','OK',1)
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time.sleep(2)
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while rec_null:
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answer = send_at('AT+CGPSINFO','+CGPSINFO: ',1)
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if 1 == answer:
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answer = 0
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if ',,,,,,' in rec_buff:
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print('GPS no está listo')
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rec_null = False
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time.sleep(1)
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else:
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# Parse GPS data
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gps_data = rec_buff.decode().split('+CGPSINFO: ')[1].strip()
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lat, lon = parse_gps_data(gps_data)
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if lat and lon:
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# Send GPS coordinates to MQTT broker
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mqtt_payload = f"{lat},{lon}"
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client.publish("iiot/"+ myhost +"/gps", mqtt_payload)
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else:
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print('error %d'%answer)
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rec_buff = ''
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send_at('AT+CGPS=0','OK',1)
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return False
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time.sleep(1.5)
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# Connect to the SQLite database
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conn = sqlite3.connect('gps_coordinates.db')
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c = conn.cursor()
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def parse_gps_data(gps_data):
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parts = gps_data.split(',')
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if len(parts) >= 4:
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lat = convert_to_degrees(parts[0])
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lon = convert_to_degrees(parts[2])
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return lat, lon
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return None, None
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# Insert the GPS coordinates into the database
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c.execute("INSERT INTO gps_coordinates (latitude, longitude) VALUES (?, ?)", (latitude, longitude))
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def convert_to_degrees(raw_value):
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if raw_value:
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degree = float(raw_value[:2])
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minute = float(raw_value[2:])
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return degree + (minute / 60.0)
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return None
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# Commit and close the connection
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conn.commit()
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conn.close()
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def power_on(power_key):
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print('SIM7600X is starting:')
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GPIO.setmode(GPIO.BCM)
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GPIO.setwarnings(False)
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GPIO.setup(power_key,GPIO.OUT)
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time.sleep(0.1)
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GPIO.output(power_key,GPIO.HIGH)
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time.sleep(2)
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GPIO.output(power_key,GPIO.LOW)
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time.sleep(20)
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ser.flushInput()
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print('SIM7600X is ready')
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else:
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print('error %d'%answer)
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rec_buff = ''
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send_at('AT+CGPS=0','OK',1)
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return False
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time.sleep(1.5)
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def power_down(power_key):
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print('SIM7600X is loging off:')
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GPIO.output(power_key,GPIO.HIGH)
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time.sleep(3)
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GPIO.output(power_key,GPIO.LOW)
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time.sleep(18)
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print('Good bye')
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return True
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def extract_gps_info(rec_buff):
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# Implement this function based on the format of rec_buff
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# Example: gps_info = rec_buff.split(',')[2]
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return gps_info
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def store_gps_coordinates(gps_info):
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cursor.execute("INSERT INTO coordinates (latitude, longitude) VALUES (?, ?)", gps_info)
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conn.commit()
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# Main program
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if __name__ == '__main__':
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# Create the SQLite table if it doesn't exist
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cursor.execute('''CREATE TABLE IF NOT EXISTS coordinates (id INTEGER PRIMARY KEY AUTOINCREMENT, latitude REAL, longitude REAL)''')
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while True:
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get_gps_position()
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try:
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#power_on(power_key)
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get_gps_position()
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#power_down(power_key)
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except:
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if ser != None:
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ser.close()
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#power_down(power_key)
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GPIO.cleanup()
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if ser != None:
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ser.close()
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GPIO.cleanup()
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118
GPS3.py
Normal file
118
GPS3.py
Normal file
@ -0,0 +1,118 @@
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#!/usr/bin/python
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# -*- coding:utf-8 -*-
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import RPi.GPIO as GPIO
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import serial
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import time
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import paho.mqtt.client as mqtt
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ser = serial.Serial('/dev/ttyS0', 115200)
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ser.flushInput()
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# MQTT Configuration
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MQTT_BROKER = "65.108.199.212"
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MQTT_PORT = 1883
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MQTT_TOPIC = "gps/coordinates"
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# Create MQTT client
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client = mqtt.Client()
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def connect_mqtt():
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client.connect(MQTT_BROKER, MQTT_PORT)
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client.loop_start()
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def send_at(command, back, timeout):
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rec_buff = ''
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ser.write((command+'\r\n').encode())
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time.sleep(timeout)
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if ser.inWaiting():
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time.sleep(0.01)
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rec_buff = ser.read(ser.inWaiting())
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if rec_buff != '':
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if back not in rec_buff.decode():
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print(command + ' ERROR')
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print(command + ' back:\t' + rec_buff.decode())
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return 0, rec_buff
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else:
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print(rec_buff.decode())
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return 1, rec_buff
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else:
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print('GPS no está listo')
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return 0, rec_buff
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def get_gps_position():
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rec_null = True
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answer = 0
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print('Iniciando GPS')
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send_at('AT+CGPS=1,1','OK',1)
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time.sleep(2)
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while rec_null:
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answer, rec_buff = send_at('AT+CGPSINFO','+CGPSINFO: ',1)
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if answer == 1:
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if ',,,,,,' in rec_buff.decode():
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print('GPS no está listo')
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else:
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# Parse GPS data
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gps_data = rec_buff.decode().split('+CGPSINFO: ')[1].strip()
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lat, lon = parse_gps_data(gps_data)
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if lat and lon:
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# Send GPS coordinates to MQTT broker
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mqtt_payload = f"{lat},{lon}"
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client.publish(MQTT_TOPIC, mqtt_payload)
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print(f"Sent to MQTT: {mqtt_payload}")
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rec_null = False
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else:
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print('error %d'%answer)
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send_at('AT+CGPS=0','OK',1)
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return False
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time.sleep(1.5)
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def parse_gps_data(gps_data):
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parts = gps_data.split(',')
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if len(parts) >= 4:
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lat = convert_to_degrees(parts[0])
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lon = convert_to_degrees(parts[2])
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return lat, lon
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return None, None
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def convert_to_degrees(raw_value):
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if raw_value:
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degree = float(raw_value[:2])
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minute = float(raw_value[2:])
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return degree + (minute / 60.0)
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return None
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def power_on(power_key):
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print('SIM7600X is starting:')
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GPIO.setmode(GPIO.BCM)
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GPIO.setwarnings(False)
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GPIO.setup(power_key,GPIO.OUT)
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time.sleep(0.1)
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GPIO.output(power_key,GPIO.HIGH)
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time.sleep(2)
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GPIO.output(power_key,GPIO.LOW)
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time.sleep(20)
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ser.flushInput()
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print('SIM7600X is ready')
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def power_down(power_key):
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print('SIM7600X is loging off:')
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GPIO.output(power_key,GPIO.HIGH)
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time.sleep(3)
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GPIO.output(power_key,GPIO.LOW)
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time.sleep(18)
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print('Good bye')
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try:
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power_key = 6 # Assuming power key is connected to GPIO 6
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connect_mqtt()
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power_on(power_key)
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get_gps_position()
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power_down(power_key)
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except Exception as e:
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print(f"An error occurred: {e}")
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finally:
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if ser is not None:
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ser.close()
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client.loop_stop()
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client.disconnect()
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GPIO.cleanup()
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