Create radio.py

modules/radio.py

@@ -0,0 +1,137 @@
+# meshing around with hamlib as a source for info to send to mesh network
+# detect signal strength and frequency of active channel if appears to be in use send to mesh network
+# depends on rigctld running externally as a network service
+# 2024 Kelly Keeton K7MHI
+
+import socket
+from time import sleep
+#from modules.settings import *
+
+rigControlServerAddress = "localhost:4532"
+radio_dectection_enabled = True
+SIGNAL_DETECTION_THRESHOLD = -10 # dBm
+SIGNAL_HOLD_TIME = 15 # seconds to hold on to signal before checking again
+SIGNAL_COOLDOWN = 5 # seconds to wait between signal checks
+SIGNAL_CYCLE_LIMIT = 6 # multiply by SIGNAL_COOLDOWN to get total time to wait before resetting signal strength
+
+ERROR_FETCHING_DATA = "error fetching data"
+
+def get_hamlib(msg="f"):
+    try:
+        rigControlSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        rigControlSocket.settimeout(2)
+        rigControlSocket.connect((rigControlServerAddress.split(":")[0],int(rigControlServerAddress.split(":")[1])))
+    except Exception as e:
+        print(f"\nSystem: Error connecting to rigctld: {e}")
+        return ERROR_FETCHING_DATA
+
+    build_msg = f"{msg}\n"
+    MESSAGE = bytes(build_msg, "utf-8")
+    rigControlSocket.sendall(MESSAGE)
+    # Look for the response
+    data = rigControlSocket.recv(16)
+    rigControlSocket.close()
+    # strip newline and return
+    data = data.replace(b'\n',b'')
+    return data.decode("utf-8").rstrip()
+
+def get_freq_common_name(freq):
+    freq = int(freq)
+    if freq == 462562500:
+        return "GRMS CH1"
+    elif freq == 462587500:
+        return "GRMS CH2"
+    elif freq == 462612500:
+        return "GRMS CH3"
+    elif freq == 462637500:
+        return "GRMS CH4"
+    elif freq == 462662500:
+        return "GRMS CH5"
+    elif freq == 462687500:
+        return "GRMS CH6"
+    elif freq == 462712500:
+        return "GRMS CH7"
+    elif freq == 462737500:
+        return "GRMS CH8"
+    elif freq == 462762500:
+        return "GRMS CH9"
+    elif freq == 462787500:
+        return "GRMS CH10"
+    elif freq == 462812500:
+        return "GRMS CH11"
+    elif freq == 462837500:
+        return "GRMS CH12"
+    elif freq == 462862500:
+        return "GRMS CH13"
+    elif freq == 462887500:
+        return "GRMS CH14"
+    elif freq == 462912500:
+        return "GRMS CH15"
+    elif freq == 462937500:
+        return "GRMS CH16"
+    elif freq == 462550000:
+        return "FRS CH1"
+    elif freq == 462575000:
+        return "FRS CH2"
+    elif freq == 462600000:
+        return "FRS CH3"
+    elif freq == 462625000:
+        return "FRS CH4"
+    elif freq == 462650000:
+        return "FRS CH5"
+    elif freq == 462675000:
+        return "FRS CH6"
+    elif freq == 462700000:
+        return "FRS CH7"
+    elif freq == 462725000:
+        return "FRS CH8"
+    elif freq == 462562500:
+        return "FRS CH9"
+    elif freq == 462587500:
+        return "FRS CH10"
+    elif freq == 462612500:
+        return "FRS CH11"
+    elif freq == 462637500:
+        return "FRS CH12"
+    elif freq == 462662500:
+        return "FRS CH13"
+    elif freq == 462687500:
+        return "FRS CH14"
+    elif freq == 462712500:
+        return "FRS CH15"
+    elif freq == 462737500:
+        return "FRS CH16"
+    elif freq == 146520000:
+        return "2M Simplex Calling"
+    else:
+        #return Mhz
+        freq = freq/1000000
+        return f"{freq} Mhz"
+    
+def get_sig_strength():
+    strength = get_hamlib('l STRENGTH')
+    return strength
+
+def signalWatcher():
+    global previousStrength
+    global signalCycle
+    try:
+        signalStrength = int(get_sig_strength())
+        if signalStrength >= previousStrength and signalStrength > SIGNAL_DETECTION_THRESHOLD:
+            message = f"Detected {get_freq_common_name(get_hamlib('f'))} active use S:{signalStrength}"
+            print (message)
+            previousStrength = signalStrength
+            signalCycle = 0
+            sleep(SIGNAL_HOLD_TIME)
+        else:
+            signalCycle += 1
+            if signalCycle >= SIGNAL_CYCLE_LIMIT:
+                signalCycle = 0
+                previousStrength = -40
+            sleep(SIGNAL_COOLDOWN)
+    except Exception as e:
+        signalStrength = -40
+        signalCycle = 0
+        previousStrength = -40
+
+# end of file