more ota debugging

src/main.cpp

@@ -237,6 +237,9 @@ void ICACHE_FLASH_ATTR sendValues() {
   rssiObject["value"] = sd.rssi;
   root["rssi"] = sd.rssi;
 
+  root["millis"] = millis();
+  root["heap"] = ESP.getFreeHeap();
+
 
   char buffer[500];
   array.printTo(buffer, sizeof(buffer));
@@ -361,6 +364,10 @@ void ICACHE_FLASH_ATTR sendValues() {
   mqttclient.loop();
   mqttclient.disconnect();
 
+  if (sd.rssi == 0) {  // re-read rssi if zero
+    sd.rssi = WiFi.RSSI();
+  }
+
   if (loop_count == 1) {
     XD0OTA ota;
     ota.update();
@@ -407,7 +414,7 @@ void setup() {
 
   geigeraverage.clear();
 
-  previousMillis = millis();
+  previousMillis = rtcMillis();
 
   DEBUG_MSG("ready.\n"); //Serial.flush();
 }