Feature: Re-Request DevInfo if it contains invalid data

It can sometimes occour that the DevInfo request returns invalid data. Currently this is identified if the firmware build year is < 2016. In this case the package will be re-requested now.

lib/Hoymiles/src/Hoymiles.cpp

@@ -91,10 +91,22 @@ void HoymilesClass::loop()
                 }
 
                 // Fetch dev info (but first fetch stats)
-                if (iv->Statistics()->getLastUpdate() > 0 && (iv->DevInfo()->getLastUpdateAll() == 0 || iv->DevInfo()->getLastUpdateSimple() == 0)) {
+                if (iv->Statistics()->getLastUpdate() > 0) {
+                    bool invalidDevInfo = !iv->DevInfo()->containsValidData()
+                        && iv->DevInfo()->getLastUpdateAll() > 0
+                        && iv->DevInfo()->getLastUpdateSimple() > 0;
+
+                    if (invalidDevInfo) {
+                        _messageOutput->println("DevInfo: No Valid Data");
+                    }
+
+                    if ((iv->DevInfo()->getLastUpdateAll() == 0)
+                        || (iv->DevInfo()->getLastUpdateSimple() == 0)
+                        || invalidDevInfo) {
                         _messageOutput->println("Request device info");
                         iv->sendDevInfoRequest();
                     }
+                }
 
                 if (++inverterPos >= getNumInverters()) {
                     inverterPos = 0;

lib/Hoymiles/src/parser/DevInfoParser.cpp

@@ -196,6 +196,16 @@ String DevInfoParser::getHwModelName()
     return devInfo[idx].modelName;
 }
 
+bool DevInfoParser::containsValidData()
+{
+    time_t t = getFwBuildDateTime();
+
+    struct tm info;
+    localtime_r(&t, &info);
+
+    return info.tm_year > (2016 - 1900);
+}
+
 uint8_t DevInfoParser::getDevIdx()
 {
     uint8_t ret = 0xff;

lib/Hoymiles/src/parser/DevInfoParser.h

@@ -33,6 +33,8 @@ public:
     uint16_t getMaxPower();
     String getHwModelName();
 
+    bool containsValidData();
+
 private:
     time_t timegm(struct tm* tm);
     uint8_t getDevIdx();