jones2126

Overview

This script connects to a mount point on RTK2GO NTRIP caster to fetch RTCM correction data and forwards it to a GPS receiver connected via a serial port (COM6). It supports NTRIP v1 protocol, parses NMEA GPGGA sentences. For debugging it logs RTCM data.

Python Library Dependencies

socket, base64, serial, serial.tools.list_ports, time, threading, traceback, sys, binascii

How to Use

The script uses the following constants, defined at the top:

	'''
	This program opens a serial connection to a PX1172RDP rover device (on ROVER_PORT at BAUD_RATE), continuously reads incoming
	data for a specified duration (RUN_DURATION), identifies message types (e.g., RTCM or various NMEA sentences), counts how many
	of each type are received, and then prints a summary report of the message frequencies at the end. It can optionally print the
	raw messages and their hexadecimal representations during data collection if PRINT_MESSAGES is enabled.
	'''
	import serial
	import time
	from collections import defaultdict

	'''
	com6tocom10.py
	This is a script used for testing passing correction data over USB with two GPS units connected
	to one laptop. The script performs these functions:
	1. Forward RTCM correction data from my Base GNSS receiver, a SkytraQ PX1125R, connected on (COM6) to a
	Rover GNSS receiver (COM10).
	2. Monitor NMEA messages from my Rover, a Skytraq PX1172RDP, on COM10 and extract RTK Fix status
	from $GPGGA messages.
	3. Print the RTK Fix status every 5 seconds along with the last $GPGGA message.
	'''

	#include <SPI.h>
	#include <RF24.h>
	#include <Adafruit_NeoPixel.h>

	// LED Definitions
	#define NUM_LEDS 3
	#define DATA_PIN 2
	#define SWITCH_PIN1 3
	#define SWITCH_PIN2 4

	// First example - extremely simple
	#include <TFT_eSPI.h> // Graphics and font library for ST7735 driver chip
	#include <SPI.h>

	TFT_eSPI tft = TFT_eSPI(); // Invoke library, pins defined in User_Setup.h

	unsigned long displayWeightLastTime = 0;
	unsigned long displayWeightDelay = 1000;
	unsigned long currentMillis = 0;

	/*
	Example code for 1.28 inch, 240*240 TFT LCD Display which uses the GC9A01 driver. The code rotates a needle
	around a pivot point (think compass needle). Thanks to "Volos Projects" on YouTube.
	Original code ref: https://github.com/VolosR/RotateSpritesTutorial/blob/main/RotateSpritesTutorial.ino
	YouTube ref: https://www.youtube.com/watch?v=oqBa_ptBmLU

	I adapted the example code for my LCD that is 240x240 and used some variables in the process
	*/
	#include <TFT_eSPI.h>

	// Credit Adafruit example that comes with the Adafruit_GC9A01A.h library. I only wired my board
	// consistent with the pin definitions in lines 31-35 using a ESP32 with 30 pins (i.e. ESP-WROOM-DA Module)

	#include "SPI.h"
	#include "Adafruit_GFX.h"
	#include "Adafruit_GC9A01A.h"

	// Define pins for display interface. You'll probably need to edit this for
	// your own needs:

	#include <HardwareSerial.h>
	#include <WiFi.h>
	#include <HTTPClient.h>

	// WiFi credentials
	const char* ssid = "Pixel_1";
	const char* password = "Taco1234";

	// Google_Deployment_ID = "AKfycbwZv_vHVI9Hw67vYj609zprKJmdVEuHyH37Mg3VCzo-2lPU9Zaz-dHLp1P7RRAgSDMb"
	const char* googleURLPrefix = "https://script.google.com/macros/s/AKfycbwZv_vHVI9Hw67vYj609zprKJmdVEuHyH37Mg3VCzo-2lPU9Zaz-dHLp1P7RRAgSDMb/exec";

	// below is the code that runs on the ESP32
	#include <Wire.h>
	#include <Adafruit_BMP085.h>
	#include <OneWire.h>
	#include <DallasTemperature.h>
	#include <WiFi.h>
	#include <HTTPClient.h>
	#include "DHT.h"

	#include <Arduino.h>

	/*
	* Calculate the error between current direction and the desired direction
	* convert the error to a value 0-255 to drive the Cytron motor controller connected to a steering motor.
	* Ref: https://www.youtube.com/channel/UCjiVhIvGmRZixSzupD0sS9Q
	*
	* Thank you Jeff Sampson for guidance and corrections
	*/

	#include <Arduino.h>