From 86ee7e1a641800a678cab96d8edb571d3b5c833c Mon Sep 17 00:00:00 2001
From: helgeerbe <helge@erbehome.de>
Date: Wed, 14 Jun 2023 11:25:54 +0200
Subject: [PATCH] perf(PowerMeter): query PowerMeter on demand

In addition to the cyclic query of the power meters, they will be queried on demand when total power is requested and last update is older than 1 second.
---
 include/PowerMeter.h |  2 ++
 src/PowerMeter.cpp   | 24 ++++++++++++++++++------
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/include/PowerMeter.h b/include/PowerMeter.h
index c7a10698..bb40b54f 100644
--- a/include/PowerMeter.h
+++ b/include/PowerMeter.h
@@ -60,6 +60,8 @@ private:
 
     bool mqttInitDone = false;
 
+    void readPowerMeter();
+
     bool smlReadLoop();
     const std::list<OBISHandler> smlHandlerList{
         {{0x01, 0x00, 0x10, 0x07, 0x00, 0xff}, &smlOBISW, &_powerMeter1Power},
diff --git a/src/PowerMeter.cpp b/src/PowerMeter.cpp
index 0c5e55b8..46a5f3c3 100644
--- a/src/PowerMeter.cpp
+++ b/src/PowerMeter.cpp
@@ -96,6 +96,11 @@ void PowerMeterClass::onMqttMessage(const espMqttClientTypes::MessageProperties&
 
 float PowerMeterClass::getPowerTotal()
 {
+    CONFIG_T& config = Configuration.get();
+    if (!config.PowerMeter_Enabled
+            || (millis() - _lastPowerMeterUpdate) < (1000)) {
+        readPowerMeter();
+    }
     return _powerMeter1Power + _powerMeter2Power + _powerMeter3Power;
 }
 
@@ -137,6 +142,19 @@ void PowerMeterClass::loop()
         return;
     }
 
+    readPowerMeter();
+
+    MessageOutput.printf("PowerMeterClass: TotalPower: %5.2f\r\n", getPowerTotal());
+
+    mqtt();
+
+    _lastPowerMeterCheck = millis();
+}
+
+void PowerMeterClass::readPowerMeter()
+{
+    CONFIG_T& config = Configuration.get();
+    
     uint8_t _address = config.PowerMeter_SdmAddress;
 
     if (config.PowerMeter_Source == SOURCE_SDM1PH) {
@@ -169,12 +187,6 @@ void PowerMeterClass::loop()
             _lastPowerMeterUpdate = millis();
         }
     }
-
-    MessageOutput.printf("PowerMeterClass: TotalPower: %5.2f\r\n", getPowerTotal());
-
-    mqtt();
-
-    _lastPowerMeterCheck = millis();
 }
 
 bool PowerMeterClass::smlReadLoop()