initial work on mesh prototype

tnc/helpers.py

@@ -8,10 +8,11 @@ import time
 from datetime import datetime,timezone
 import crcengine
 import static
-from static import ARQ, AudioParam, Beacon, Channel, Daemon, HamlibParam, ModemParam, Station, Statistics, TCIParam, TNC
+from static import ARQ, AudioParam, Beacon, Channel, Daemon, HamlibParam, ModemParam, Station, Statistics, TCIParam, TNC, MeshParam
 import structlog
 import numpy as np
 import threading
+import mesh
 
 log = structlog.get_logger("helpers")
 
@@ -164,7 +165,8 @@ def add_to_heard_stations(dxcallsign, dxgrid, datatype, snr, offset, frequency):
                     ]
                 )
                 break
-
+    # trigger update of routing table
+    mesh.MeshRouter.get_from_heard_stations()
 
 #    for idx, item in enumerate(TNC.heard_stations):
 #        if dxcallsign in item:

tnc/mesh.py

@@ -0,0 +1,66 @@
+# -*- coding: UTF-8 -*-
+"""
+
+@author: DJ2LS
+
+HF mesh networking prototype and testing module
+
+        import time
+        MeshParam.routing_table = [['AA1AA', 'direct', 0, 1.0, 25, time.time(), ], ['AA1AA', 'AA2BB', 1, 3.1, 10, time.time(), ],
+                  ['AA3CC', 'AA2BB', 5, -4.5, -3, time.time(), ]]
+
+        print(MeshParam.routing_table)
+        print("---------------------------------")
+
+"""
+# pylint: disable=invalid-name, line-too-long, c-extension-no-member
+# pylint: disable=import-outside-toplevel, attribute-defined-outside-init
+
+from static import TNC, MeshParam
+import time
+import threading
+
+class MeshRouter():
+
+    def get_from_heard_stations(self):
+        """
+        get data from heard stations
+        heard stations format:
+        [dxcallsign,dxgrid,int(time.time()),datatype,snr,offset,frequency]
+
+        TNC.heard_stations.append(
+                    [
+                        dxcallsign,
+                        dxgrid,
+                        int(time.time()),
+                        datatype,
+                        snr,
+                        offset,
+                        frequency,
+                    ]
+                )
+        """
+        dxcallsign = 0
+        dxgrid = 1
+        timestamp = 2
+        type = 3
+        snr = 4
+        offset = 5
+        frequency = 6
+
+
+        for item in TNC.heard_stations:
+            new_router = [item[dxcallsign], 'direct', 0, item[snr], item[snr], item[timestamp]]
+            self.add_router_to_routing_table(new_router)
+
+    def add_router_to_routing_table(self, new_router):
+        # destination callsign # router callsign # hops # rx snr # route quality # timestamp
+        for _, item in enumerate(MeshParam.routing_table):
+            # update routing entry if exists
+            if new_router[0] in item[0] and new_router[1] in item[1]:
+                print(f"UPDATE {MeshParam.routing_table[_]} >>> {new_router}")
+                MeshParam.routing_table[_] = new_router
+
+        # add new routing entry if not exists
+        if new_router not in MeshParam.routing_table:
+            MeshParam.routing_table.append(new_router)

tnc/static.py

@@ -92,7 +92,10 @@ class HamlibParam:
     hamlib_mode: str = ""
     hamlib_rf: int = 0
 
-@dataclass 
+@dataclass
+class MeshParam:
+    routing_table = []
+@dataclass
 class ModemParam:
     tuning_range_fmin: float = -50.0
     tuning_range_fmax: float = 50.0