jdz/gpsinflux.py

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Python
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2024-07-27 03:14:41 +00:00
#!/usr/bin/python
# -*- coding:utf-8 -*-
import RPi.GPIO as GPIO
import serial
import time
from datetime import datetime
import os
import signal
from influxdb_client import InfluxDBClient, Point
from influxdb_client.client.write_api import SYNCHRONOUS
# GPIO configuration
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
ser = serial.Serial('/dev/ttyUSB3', 115200)
ser.flushInput()
myhost = os.uname()[1]
# InfluxDB settings
INFLUXDB_URL = "http://100.64.0.24:8086"
INFLUXDB_TOKEN = "IPtqPXbaXuuMHvx_tUOt1cmIZfLHucd-9DcepXTVpQc-fNKBhp6pkhyTsq_XnoGXdxwILy5AFFgZ_QUZCE5Jhg=="
INFLUXDB_ORG = "juandiego" # Replace with your organization name
INFLUXDB_BUCKET = "gps_data"
# Initialize InfluxDB client
client = InfluxDBClient(url=INFLUXDB_URL, token=INFLUXDB_TOKEN, org=INFLUXDB_ORG)
write_api = client.write_api(write_options=SYNCHRONOUS)
# Global flag for graceful exit
running = True
def signal_handler(sig, frame):
global running
print('You pressed Ctrl+C! Stopping GPS tracking...')
running = False
signal.signal(signal.SIGINT, signal_handler)
def parse_gps_data(gps_string):
parts = gps_string.split(',')
if len(parts) < 4:
return None
lat = float(parts[0][:2]) + float(parts[0][2:]) / 60
if parts[1] == 'S':
lat = -lat
lon = float(parts[2][:3]) + float(parts[2][3:]) / 60
if parts[3] == 'W':
lon = -lon
return f"{lat:.6f}", f"{lon:.6f}"
def write_to_influxdb(lat, lon):
point = Point("gps_location") \
.tag("host", myhost) \
.field("latitude", float(lat)) \
.field("longitude", float(lon))
write_api.write(bucket=INFLUXDB_BUCKET, record=point)
def send_at(command, back, timeout):
ser.write((command + '\r\n').encode())
time.sleep(timeout)
if ser.inWaiting():
time.sleep(0.01)
rec_buff = ser.read(ser.inWaiting()).decode()
if back in rec_buff:
gps_data = rec_buff.split('+CGPSINFO: ')[1].split('\r\n')[0]
parsed_data = parse_gps_data(gps_data)
if parsed_data:
lat, lon = parsed_data
print(f"GPS: Lat: {lat}, Lon: {lon}")
write_to_influxdb(lat, lon)
return 1
return 0
def get_gps_position():
send_at('AT+CGPSINFO', '+CGPSINFO:', 1)
def initialize_gps():
print('Starting GPS')
send_at('AT+CGPS=1', 'OK', 1)
time.sleep(2)
initialize_gps()
print("Starting continuous GPS tracking. Press Ctrl+C to stop.")
while running:
get_gps_position()
time.sleep(14) # Wait for 14 seconds before the next reading
ser.close()
GPIO.cleanup()
client.close()
print("GPS tracking stopped. Goodbye!")