From 0983831a5cfaf9eb0e76bf39e0d44ad62f2533a6 Mon Sep 17 00:00:00 2001
From: Adolfo Delorenzo <adelorenzo@oe74.net>
Date: Sat, 27 Jul 2024 13:10:19 -0600
Subject: [PATCH] 2024-07-27 -

---
 gpsnoloop.py | 125 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 gpsnoloop.py

diff --git a/gpsnoloop.py b/gpsnoloop.py
new file mode 100644
index 0000000..b6cced7
--- /dev/null
+++ b/gpsnoloop.py
@@ -0,0 +1,125 @@
+#!/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
+import logging
+
+# Set up logging
+logging.basicConfig(level=logging.DEBUG, format='%(asctime)s - %(levelname)s - %(message)s')
+
+# GPIO configuration
+GPIO.setmode(GPIO.BCM)
+GPIO.setwarnings(False)
+
+try:
+    ser = serial.Serial('/dev/ttyUSB3', 115200)
+    ser.flushInput()
+except serial.SerialException as e:
+    logging.error(f"Failed to open serial port: {e}")
+    exit(1)
+
+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 = "gpsdata"
+
+# Initialize InfluxDB client
+try:
+    client = InfluxDBClient(url=INFLUXDB_URL, token=INFLUXDB_TOKEN, org=INFLUXDB_ORG)
+    write_api = client.write_api(write_options=SYNCHRONOUS)
+    logging.info("Successfully connected to InfluxDB")
+except Exception as e:
+    logging.error(f"Failed to connect to InfluxDB: {e}")
+    exit(1)
+
+def parse_gps_data(gps_string):
+    parts = gps_string.split(',')
+    if len(parts) < 4:
+        logging.warning(f"Incomplete GPS data: {gps_string}")
+        return None
+    
+    try:
+        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 lat, lon
+    except Exception as e:
+        logging.error(f"Error parsing GPS data: {e}")
+        return None
+
+def write_to_influxdb(lat, lon):
+    timestamp = int(time.time() * 1000000000)  # nanosecond precision
+    
+    try:
+        gps_point = Point("gps_location") \
+            .tag("host", myhost) \
+            .field("latitude", lat) \
+            .field("longitude", lon) \
+            .field("geolocation", f"{lat},{lon}") \
+            .time(timestamp)
+        
+        write_api.write(bucket=INFLUXDB_BUCKET, record=gps_point)
+        logging.info(f"Data written to InfluxDB: Lat: {lat}, Lon: {lon}")
+    except Exception as e:
+        logging.error(f"Failed to write to InfluxDB: {e}")
+
+def send_at(command, back, timeout):
+    try:
+        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]
+                logging.debug(f"Raw GPS data: {gps_data}")
+                parsed_data = parse_gps_data(gps_data)
+                if parsed_data:
+                    lat, lon = parsed_data
+                    logging.info(f"GPS: Lat: {lat:.6f}, Lon: {lon:.6f}")
+                    write_to_influxdb(lat, lon)
+                    return 1
+            else:
+                logging.warning(f"Expected response not found. Received: {rec_buff}")
+        else:
+            logging.warning("No data received from GPS module")
+    except Exception as e:
+        logging.error(f"Error communicating with GPS module: {e}")
+    return 0
+
+def get_gps_position():
+    return send_at('AT+CGPSINFO', '+CGPSINFO:', 1)
+
+def initialize_gps():
+    logging.info('Starting GPS')
+    if send_at('AT+CGPS=1', 'OK', 1):
+        logging.info("GPS module initialized successfully")
+    else:
+        logging.error("Failed to initialize GPS module")
+    time.sleep(2)
+
+# Main execution
+initialize_gps()
+logging.info("Getting GPS position...")
+if not get_gps_position():
+    logging.warning("Failed to get GPS position")
+
+# Clean up
+ser.close()
+GPIO.cleanup()
+client.close()
+logging.info("GPS tracking completed. Goodbye!")