127 lines
3.9 KiB
Python
127 lines
3.9 KiB
Python
import threading
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import queue
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import tkinter as tk
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from tkinter import ttk
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from tkinter import messagebox
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from serial import Serial
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from pynmeagps import NMEAReader
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import serial.tools.list_ports
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import serial.serialutil
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import navpoint.content
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import navpoint.fix_path
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import navpoint.intercom
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def main(port, intercom):
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try:
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with Serial(port, timeout=3) as stream:
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reader = NMEAReader(stream)
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intercom.put(
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"Connected",
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port,
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)
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while True:
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_, parsed_data = reader.read()
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try:
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lat = parsed_data.lat
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lon = parsed_data.lon
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time = parsed_data.time
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date = parsed_data.date
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if lat or lon: # ignore 0, 0 fixes
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navpoint.content.content = f"""<?xml version='1.0' encoding='us-ascii'?><kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2"><Document><Style id="icon"><IconStyle><Icon><href>http://127.0.0.1:8888/marker.png</href></Icon></IconStyle></Style><name>Navpoint</name><open>1</open><Placemark><name>Position</name><styleUrl>#icon</styleUrl><Point><coordinates>{lon},{lat},0</coordinates></Point><description>{date} {time} UTC</description></Placemark></Document></kml>"""
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intercom.put(
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"LocationUpdate",
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{
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"lat": lat,
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"lon": lon,
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"time": f"{date} {time} UTC",
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},
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)
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except AttributeError:
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pass
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except serial.serialutil.SerialException as e:
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intercom.put(
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"Disconnected",
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port,
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)
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messagebox.showerror(
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"Navpoint Error", f"Error reading from port {port}: {str(e)}"
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)
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def run(port, intercom):
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threading.Thread(target=main, args=(port, intercom), daemon=True).start()
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def clear(queue_to_clear):
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try:
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while True:
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queue_to_clear.get(block=False)
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except queue.Empty:
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pass
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def update_dropdown(dropdown):
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dropdown["values"] = ["[Select port]"] + [
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f"{port.device}: {port.description}"
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for port in serial.tools.list_ports.comports()
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]
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dropdown.current(newindex=0)
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def run_ui():
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def selected(event):
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selection = dropdown.get().split(": ", 1)[0]
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if not selection.startswith("["):
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intercom.clear()
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run(selection, intercom)
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def new_data(purpose, content):
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if purpose == "LocationUpdate":
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updated.config(text="Last updated: " + content["time"])
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elif purpose == "Connected":
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status.config(text="Connected to " + dropdown.get())
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dropdown.pack_forget()
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refresh.pack_forget()
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elif purpose == "Disconnected":
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status.config(text="Not connected")
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update_dropdown(dropdown)
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dropdown.pack()
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refresh.pack()
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def refresh_clicked():
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update_dropdown(dropdown)
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window = tk.Tk(className="navpoint")
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window.title("Navpoint")
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window.resizable(width=False, height=False)
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status = ttk.Label(window, text="Not connected")
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status.pack()
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updated = ttk.Label(window, text="Waiting for location")
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updated.pack()
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n = tk.StringVar()
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dropdown = ttk.Combobox(window, state="readonly", textvariable=n, width=40)
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update_dropdown(dropdown)
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dropdown.pack()
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refresh = ttk.Button(
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window, text="Refresh device list", command=refresh_clicked
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)
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refresh.pack()
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dropdown.bind("<<ComboboxSelected>>", selected)
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intercom = navpoint.intercom.Intercom(window, new_data)
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try:
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window.iconbitmap(navpoint.fix_path.fix_path("icon.ico"))
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except tk.TclError:
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pass
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window.mainloop()
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