Merge pull request #2286 from IoTThinks/MCdev-PowerSaving-for-nrf52-companion-202604

Added Power Saving for NRF52 companions to have extra 30% battery life

examples/companion_radio/MyMesh.cpp

@@ -2222,3 +2222,8 @@ bool MyMesh::advert() {
     return false;
   }
 }
+
+// To check if there is pending work
+bool MyMesh::hasPendingWork() const {
+  return _mgr->getOutboundTotal() > 0;
+}

examples/companion_radio/MyMesh.h

@@ -177,6 +177,9 @@ public:
   }
 #endif
 
+  // To check if there is pending work
+  bool hasPendingWork() const;
+
 private:
   void writeOKFrame();
   void writeErrFrame(uint8_t err_code);

examples/companion_radio/main.cpp

@@ -250,13 +250,19 @@ void loop() {
 #endif
   rtc_clock.tick();
 
+  if (!the_mesh.hasPendingWork()) {
+#if defined(NRF52_PLATFORM)
+    board.sleep(0); // nrf ignores seconds param, sleeps whenever possible
+#endif
+  }
+
 #if defined(ESP32) && defined(WIFI_SSID)
   // Safely attempt to reconnect every 10 seconds if flagged
   if (wifi_needs_reconnect && (millis() - last_wifi_reconnect_attempt > 10000)) {
-      WIFI_DEBUG_PRINTLN("Attempting manual WiFi reconnect...");
+    WIFI_DEBUG_PRINTLN("Attempting manual WiFi reconnect...");
-      WiFi.disconnect();
+    WiFi.disconnect();
-      WiFi.reconnect();
+    WiFi.reconnect();
-      last_wifi_reconnect_attempt = millis();
+    last_wifi_reconnect_attempt = millis();
   }
 #endif
 }