131 lines
3.5 KiB
Python
131 lines
3.5 KiB
Python
#!/usr/bin/python
|
|
# -*- coding:utf-8 -*-
|
|
import RPi.GPIO as GPIO
|
|
import serial
|
|
import time, os
|
|
import csv
|
|
from datetime import datetime
|
|
|
|
myhost = os.uname()[1]
|
|
|
|
GPIO.setwarnings(False)
|
|
|
|
ser = serial.Serial('/dev/ttyS0',115200)
|
|
ser.flushInput()
|
|
|
|
rec_buff = ''
|
|
time_count = 0
|
|
|
|
# CSV file setup
|
|
csv_filename = f"gps_data_{datetime.now().strftime('%Y%m%d_%H%M%S')}.csv"
|
|
|
|
def convert_to_degrees(raw_value):
|
|
decimal_value = float(raw_value)
|
|
degrees = int(decimal_value / 100)
|
|
d = float(degrees)
|
|
m = (decimal_value - (d * 100)) / 60.0
|
|
return d + m
|
|
|
|
def write_to_csv(timestamp, lat, lon):
|
|
with open(csv_filename, 'a', newline='') as csvfile:
|
|
csv_writer = csv.writer(csvfile)
|
|
csv_writer.writerow([timestamp, lat, lon])
|
|
|
|
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
|
|
else:
|
|
gps_data = rec_buff.decode()[13:-36]
|
|
print(gps_data)
|
|
|
|
# Parse GPS data
|
|
gps_parts = gps_data.split(',')
|
|
if len(gps_parts) >= 4 and gps_parts[0] and gps_parts[2]:
|
|
lat = convert_to_degrees(gps_parts[0])
|
|
lon = convert_to_degrees(gps_parts[2])
|
|
if gps_parts[1] == 'S':
|
|
lat = -lat
|
|
if gps_parts[3] == 'W':
|
|
lon = -lon
|
|
|
|
timestamp = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
|
|
write_to_csv(timestamp, lat, lon)
|
|
|
|
# Format for Google Maps
|
|
maps_url = f"https://www.google.com/maps?q={lat},{lon}"
|
|
print(f"Google Maps URL: {maps_url}")
|
|
|
|
else:
|
|
print("Invalid GPS data received")
|
|
|
|
return 1
|
|
else:
|
|
print('GPS no está listo')
|
|
return 0
|
|
|
|
def get_gps_position():
|
|
rec_null = True
|
|
answer = 0
|
|
print('Iniciando GPS')
|
|
rec_buff = ''
|
|
send_at('AT+CGPS=1,1','OK',1)
|
|
time.sleep(2)
|
|
while rec_null:
|
|
answer = send_at('AT+CGPSINFO','+CGPSINFO: ',1)
|
|
if 1 == answer:
|
|
answer = 0
|
|
if ',,,,,,' in rec_buff:
|
|
print('GPS no está listo')
|
|
rec_null = False
|
|
time.sleep(1)
|
|
else:
|
|
print('error %d'%answer)
|
|
rec_buff = ''
|
|
send_at('AT+CGPS=0','OK',1)
|
|
return False
|
|
time.sleep(1.5)
|
|
|
|
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:
|
|
# No need to create CSV file with header anymore
|
|
#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()
|