I am using an ESP8266 to get some data off an openDTU (as JSON file) to act as a status monitor.

While getting the data from the openDTU the ESP8266’s software watchdog “bites” every few minutes.

I tried using

ESP.wdtEnable(5000); 

in setup() to make the watchdog very forgiving and added several ESP.wtdFeed() commands in the critical area of the code:

            ESP.wdtFeed();
        http.begin(client, getLink6);
        ESP.wdtFeed();
        httpCode = http.GET();       
        getWarOkay = false;
        ESP.wdtFeed();
        if ( httpCode > 0 ) { 
            payload = http.getString(); 
            getWarOkay = true;
            payloadAll = payloadAll + "<br><br>httpCode: " + String(httpCode) + "<br>###" + payload + "### END-PAYLOAD4 ###";
        }
        else { anzFehler++; textFehler = textFehler + "Block1"; }
        ESP.wdtFeed();
        
        http.end();

Still it will trigger a reboot – maybe a little less often than earlier

Serial monitor output is: rst cause:2, boot mode:(3,6)

I guess I will not be able to speed up the response time of the openDTU easily – Any suggestions how to deal with the issue?