initial commit

README.md

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+# APRS-draw
+APRS-draw is a project to faciliate the drawing of shapes on APRS by entering in points.
+Currently points can be taken in by GPX file named points.gpx in the working directory you are in.
+ 

coords.py

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+#! /usr/bin/env python
+# Simple script to convert normal coords to APRS coordinates
+
+import xml.sax
+import sys
+
+
+class CoordHandler(xml.sax.ContentHandler):
+    counter = 0
+    lats = []
+    lons = []
+
+    def __init__(self):
+
+        pass
+
+    def startElement(self, tag, attrs):
+        # Handle waypoints
+        if tag == 'wpt':
+            self.counter += 1
+            lat = float(attrs['lat'])
+            lon = float(attrs['lon'])
+
+            # format latitude for APRS
+            if lat < 0:
+                northsouth = 'S'
+            else:
+                northsouth = 'N'
+
+            lat = abs(lat)
+            lat_degrees = str(int(lat))
+
+            if len(lat_degrees) < 2:
+                lat_degrees = '0' + lat_degrees
+
+            lat_minutes = ((lat % 1) * 60).__round__(2)
+
+            lat_partial_minutes = str((lat_minutes % 1).__round__(2))[1:]
+            lat_minutes = str(int(lat_minutes))
+
+            while len(lat_minutes) < 2:
+                lat_minutes = '0' + lat_minutes
+
+            while len(lat_partial_minutes) < 3:
+                lat_partial_minutes += '0'
+
+            lat_aprs = lat_degrees + lat_minutes + lat_partial_minutes + northsouth
+
+            # format longitude for APRS
+            if lon < 0:
+                eastwest = 'W'
+            else:
+                eastwest = 'E'
+
+            lon = abs(lon)
+            lon_degrees = str(int(abs(lon)))
+
+            if len(lon_degrees) < 3:
+                lon_degrees = '0' + lon_degrees
+
+            lon_minutes = ((lon % 1) * 60).__round__(2)
+
+            lon_partial_minutes = str((lon_minutes % 1).__round__(2))[1:]
+            lon_minutes = str(int(lon_minutes))
+
+            while len(lon_minutes) < 2:
+                lon_minutes = '0' + lon_minutes
+
+            while len(lon_partial_minutes) < 3:
+                lon_partial_minutes += '0'
+
+            lon_aprs = lon_degrees + lon_minutes + lon_partial_minutes + eastwest
+
+            # Data Verification
+
+            if len(lat_aprs) != 8:
+                print('lat: ' + str(len(lat_aprs)), file=sys.stderr)
+                print('lat: ' + str(lat_aprs), file=sys.stderr)
+
+                raise
+
+            if len(lon_aprs) != 9:
+                print('lon: ' + str(len(lon_aprs)), file=sys.stderr)
+                print('lon: ' + str(lon_aprs), file=sys.stderr)
+
+                raise
+
+            self.lats.append(lat_aprs)
+            self.lons.append(lon_aprs)
+
+
+
+    def endElement(self, tag):
+        pass
+
+    def characters(self, content):
+        pass
+
+
+def main():
+    # create an XMLReader
+    parser = xml.sax.make_parser()
+    # turn off namepsaces
+    parser.setFeature(xml.sax.handler.feature_namespaces, 0)
+
+    # override the default ContextHandler
+
+    xml.sax.parse("points.gpx", CoordHandler())
+
+    print(CoordHandler.lats)
+    print(CoordHandler.lons)
+
+    pass
+
+
+if __name__ == '__main__':
+    main()

main.py

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+import socket
+import sys
+import time
+
+lat_points = []
+lon_points = []
+
+
+call = b'N0CALL'
+passcode = b''
+
+server = 'noam.aprs2.net'
+port = 14580
+message = b'Hello, World'
+
+
+def set_posit(connection: socket, lat: bytes, lon: bytes, message: bytes):
+    packet = b'' + call + b'>APRS,TCPIP*:' + b'!' + \
+        lat + b'/' + lon + b'/' + message + b'\n'
+    connection.send(packet)
+    print(b'sent:' + packet)
+    time.sleep(5)
+
+
+def main():
+    points = 0
+    if len(lat_points) == len(lon_points):
+        points = len(lat_points)
+    else:
+        print('lat: ' + str(len(lat_points)) +
+              '\nlon: ' + str(len(lon_points)))
+        print('lat and lon points are not equal')
+        sys.exit(1)
+
+    connection: socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+
+    connection.connect((server, port))
+    r = connection.recv(1024)
+    print('server is running: ' + str(r))
+
+    # Logs into the server
+    connection.send(b'user ' + call + b' pass ' +
+                    passcode + b' vers aprs-draw 0.0.0' b'\n')
+    r = connection.recv(1024)
+    print('logged in: ' + str(r))
+
+    for i in range(points):
+        lat = bytes(lat_points[i], 'utf-8')
+        lon = bytes(lon_points[i], 'utf-8')
+        set_posit(connection, lat, lon, message)
+
+    connection.close()
+    pass
+
+
+if __name__ == '__main__':
+    main()