#!/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!")