From bd092720c308ef00a7f247fb4b6cff2e78de1d47 Mon Sep 17 00:00:00 2001
From: nasseeder1 <nasseeder1@users.noreply.github.com>
Date: Sun, 14 Mar 2021 07:47:14 +0000
Subject: [PATCH] 76_SolarForecast.pm: contrib 0.10.0

git-svn-id: https://svn.fhem.de/fhem/trunk@23961 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/contrib/DS_Starter/76_SolarForecast.pm | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/fhem/contrib/DS_Starter/76_SolarForecast.pm b/fhem/contrib/DS_Starter/76_SolarForecast.pm
index edf1ecc9b..72ab62367 100644
--- a/fhem/contrib/DS_Starter/76_SolarForecast.pm
+++ b/fhem/contrib/DS_Starter/76_SolarForecast.pm
@@ -2667,11 +2667,17 @@ sub calcFromHistory {
           unshift @efa, $k[$ei];
           $ei--;
       }
+        
+      my $anzavg = scalar(@efa);
+      
+      if($anzavg) {
+          Log3 ($name, 4, "$name - PV History -> Day $day has index $idx. Days ($calcd) for calc: ".join " ",@efa); 
+      }
+      else {                                                                              # vermeide Fehler: Illegal division by zero
+          Log3 ($name, 4, "$name - PV History -> Day $day has index $idx. Use only current day for average calc");
+          return;
+      }
       
-      Log3 ($name, 4, "$name - PV History -> Day $day has index $idx. Days ($calcd) for calc: ".join " ",@efa); 
-  
-      # my $pvhh         = $data{$type}{$name}{pvhist};
-      my $anzavg       = scalar(@efa);
       my ($pvrl,$pvfc) = (0,0);
             
       for my $dayfa (@efa) {
@@ -2881,7 +2887,7 @@ return;
 }
 
 ################################################################
-#    alle Readings eines Devices oder nur Reaging-Regex 
+#    alle Readings eines Devices oder nur Reading-Regex 
 #    löschen
 ################################################################
 sub deleteReadingspec {