75 lines
2.2 KiB
Python
75 lines
2.2 KiB
Python
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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 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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ser = serial.Serial('/dev/ttyS0',115200)
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ser.flushInput()
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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
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else:
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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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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 ',,,,,,' not in rec_buff:
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# Extract GPS information from rec_buff and store it in the database
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gps_info = extract_gps_info(rec_buff) # Implement this function based on the format of rec_buff
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store_gps_coordinates(gps_info)
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return True
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else:
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print('GPS is not ready')
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time.sleep(1)
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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 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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