Added Power Saving for NRF52 companions

examples/companion_radio/MyMesh.cpp

@@ -2144,3 +2144,11 @@ bool MyMesh::advert() {
     return false;
   }
 }
+
+// To check if there is pending work
+bool MyMesh::hasPendingWork() const {
+#if defined(WITH_BRIDGE)
+  if (bridge.isRunning()) return true; // bridge needs WiFi radio, can't sleep
+#endif
+  return _mgr->getOutboundTotal() > 0;
+}

examples/companion_radio/MyMesh.h

@@ -174,6 +174,9 @@ public:
       sensors.setSettingValue("gps_interval", interval_str);
     }
   }
+
+  // To check if there is pending work
+  bool hasPendingWork() const;
 #endif
 
 private:

examples/companion_radio/main.cpp

@@ -229,4 +229,10 @@ void loop() {
   ui_task.loop();
 #endif
   rtc_clock.tick();
+
+  if (!the_mesh.hasPendingWork()) {
+#if defined(NRF52_PLATFORM)
+    board.sleep(0); // nrf ignores seconds param, sleeps whenever possible
+#endif
+  }
 }