Merge pull request #457 from GUVWAF/reqTelemetry

Add `request-telemetry` option

Author: thebentern

meshtastic/__main__.py

@@ -412,6 +412,13 @@ def onConnected(interface):
             print(f"Sending traceroute request to {dest} (this could take a while)")
             interface.sendTraceRoute(dest, hopLimit)
 
+        if args.request_telemetry:
+            if args.dest == BROADCAST_ADDR:
+                meshtastic.util.our_exit("Warning: Must use a destination node ID.")
+            else:
+                print(f"Sending telemetry request to {args.dest} (this could take a while)")
+                interface.sendTelemetry(destinationId=args.dest, wantResponse=True)
+
         if args.gpio_wrb or args.gpio_rd or args.gpio_watch:
             if args.dest == BROADCAST_ADDR:
                 meshtastic.util.our_exit("Warning: Must use a destination node ID.")
@@ -1188,6 +1195,14 @@ def initParser():
         "Only nodes that have the encryption key can be traced.",
     )
 
+    parser.add_argument(
+        "--request-telemetry", 
+        help="Request telemetry from a node. "
+        "You need pass the destination ID as argument with '--dest'. "
+        "For repeaters, the nodeNum is required.",
+        action="store_true", 
+    )
+
     parser.add_argument(
         "--ack",
         help="Use in combination with --sendtext to wait for an acknowledgment.",

meshtastic/mesh_interface.py

@@ -18,7 +18,7 @@
 from tabulate import tabulate
 
 import meshtastic.node
-from meshtastic import mesh_pb2, portnums_pb2
+from meshtastic import mesh_pb2, portnums_pb2, telemetry_pb2
 from meshtastic.__init__ import (
     BROADCAST_ADDR,
     BROADCAST_NUM,
@@ -409,6 +409,70 @@ def onResponseTraceRoute(self, p):
 
         self._acknowledgment.receivedTraceRoute = True
 
+    def sendTelemetry(self, destinationId=BROADCAST_ADDR, wantResponse=False):
+        """Send telemetry and optionally ask for a response"""
+        r = telemetry_pb2.Telemetry()
+
+        node = next(n for n in self.nodes.values() if n["num"] == self.localNode.nodeNum)
+        if node is not None:
+            metrics = node.get("deviceMetrics")
+            if metrics:
+                batteryLevel = metrics.get("batteryLevel")
+                if batteryLevel is not None:
+                    r.device_metrics.battery_level = batteryLevel
+                voltage = metrics.get("voltage")
+                if voltage is not None:
+                    r.device_metrics.voltage = voltage
+                channel_utilization = metrics.get("channelUtilization")
+                if channel_utilization is not None:
+                    r.device_metrics.channel_utilization = channel_utilization
+                air_util_tx = metrics.get("airUtilTx")
+                if air_util_tx is not None:
+                    r.device_metrics.air_util_tx = air_util_tx
+
+        if wantResponse:
+            onResponse = self.onResponseTelemetry
+        else:
+            onResponse = None
+
+        if destinationId.startswith("!"):
+            destinationId = int(destinationId[1:], 16)
+        else:
+            destinationId = int(destinationId)
+        
+        self.sendData(
+            r,
+            destinationId=destinationId,
+            portNum=portnums_pb2.PortNum.TELEMETRY_APP,
+            wantResponse=wantResponse,
+            onResponse=onResponse,
+        )
+        if wantResponse:
+            self.waitForTelemetry()
+
+    def onResponseTelemetry(self, p):
+        """on response for telemetry"""
+        if p["decoded"]["portnum"] == 'TELEMETRY_APP':
+            self._acknowledgment.receivedTelemetry = True
+            telemetry = telemetry_pb2.Telemetry()
+            telemetry.ParseFromString(p["decoded"]["payload"])
+
+            print("Telemetry received:")
+            if telemetry.device_metrics.battery_level is not None:
+                print(f"Battery level: {telemetry.device_metrics.battery_level:.2f}%")
+            if telemetry.device_metrics.voltage is not None:
+                print(f"Voltage: {telemetry.device_metrics.voltage:.2f} V")
+            if telemetry.device_metrics.channel_utilization is not None:
+                print(
+                    f"Total channel utilization: {telemetry.device_metrics.channel_utilization:.2f}%"
+                )
+            if telemetry.device_metrics.air_util_tx is not None:
+                print(f"Transmit air utilization: {telemetry.device_metrics.air_util_tx:.2f}%")
+            
+        elif p["decoded"]["portnum"] == 'ROUTING_APP':
+            if p["decoded"]["routing"]["errorReason"] == 'NO_RESPONSE':
+                our_exit("No response from node. At least firmware 2.1.22 is required on the destination node.")
+
     def _addResponseHandler(self, requestId, callback):
         self.responseHandlers[requestId] = ResponseHandler(callback)
 
@@ -491,6 +555,12 @@ def waitForTraceRoute(self, waitFactor):
         success = self._timeout.waitForTraceRoute(waitFactor, self._acknowledgment)
         if not success:
             raise Exception("Timed out waiting for traceroute")
+        
+    def waitForTelemetry(self):
+        """Wait for telemetry"""
+        success = self._timeout.waitForTelemetry(self._acknowledgment)
+        if not success:
+            raise Exception("Timed out waiting for telemetry")
 
     def getMyNodeInfo(self):
         """Get info about my node."""

meshtastic/util.py

@@ -192,7 +192,16 @@ def waitForTraceRoute(self, waitFactor, acknowledgment, attr="receivedTraceRoute
                 return True
             time.sleep(self.sleepInterval)
         return False
-
+    
+    def waitForTelemetry(self, acknowledgment):
+        """Block until telemetry response is received. Returns True if telemetry response has been received."""
+        self.reset()
+        while time.time() < self.expireTime:
+            if getattr(acknowledgment, "receivedTelemetry", None):
+                acknowledgment.reset()
+                return True
+            time.sleep(self.sleepInterval)
+        return False
 
 class Acknowledgment:
     "A class that records which type of acknowledgment was just received, if any."
@@ -203,13 +212,15 @@ def __init__(self):
         self.receivedNak = False
         self.receivedImplAck = False
         self.receivedTraceRoute = False
+        self.receivedTelemetry = False
 
     def reset(self):
         """reset"""
         self.receivedAck = False
         self.receivedNak = False
         self.receivedImplAck = False
         self.receivedTraceRoute = False
+        self.receivedTelemetry = False
 
 
 class DeferredExecution: