Added download and parsing for daily texts

display.ino

@@ -33,15 +33,23 @@ String getRow(String text, int width, int letter_width, int text_of_row_x) {  //
 }
 
 // remove special characters (ä,ö,ü,ß)
-String removeSpecialChars(String text) {
+String replaceSpecialChars(String text) {
+  if(text[0] == ' ') { text = text.substring(1,text.length()-1); }
   text.replace("ä", "ae");
   text.replace("Ä", "AE");
+  text.replace("ä", "ae");
+  text.replace("Ä", "AE");
   text.replace("ö", "oe");
   text.replace("Ö", "OE");
+  text.replace("ö", "oe");
+  text.replace("Ö", "OE");
   text.replace("ü", "ue");
   text.replace("Ü", "UE");
+  text.replace("ü", "ue");
+  text.replace("Ü", "UE");
   text.replace("ß", "ss");
   text.replace("ẞ", "SS");
+  text.replace("ß", "ss");
 
   return text;
 }
@@ -49,8 +57,8 @@ String removeSpecialChars(String text) {
 // show the daily text on the epd
 void showDailyText(String losung, String lehrtext, String losungPosition, String lehrtextPosition) {
   // clean the strings for
-  losung = removeSpecialChars(losung);
+  losung = replaceSpecialChars(losung);
-  lehrtext = removeSpecialChars(lehrtext);
+  lehrtext = replaceSpecialChars(lehrtext);
 
   // position vars
   int text_x = 0;

http_grab.ino

@@ -0,0 +1,62 @@
+#include <HTTPClient.h>
+
+String textBeginString = "<b>";
+String textEndString = "</b><br>";
+String sourceBeginString = textEndString;  // because source begins where text ends
+String sourceEndString = "</font></p>";
+
+String getHTML(String url) {
+  String result = "";
+  if(WiFi.status() == WL_CONNECTED) {
+    HTTPClient http;
+    http.begin(url);  // initialize the http instance
+    int httpCode = http.GET();  // get the page; httpCode will be negative on error
+
+    if(httpCode > 0) {
+      // HTTP header has been send and Server response header has been handled
+      Serial.printf("[HTTP] GET: %d\n", httpCode);
+
+      // file found at server
+      if(httpCode == HTTP_CODE_OK) {
+          result = http.getString();
+      }
+    } else {
+        Serial.printf("[HTTP] GET: %s\n", http.errorToString(httpCode).c_str());
+    }
+
+    http.end();
+  }
+  return result;
+}
+
+String getLosungFromHTML(String html) {
+  int losungBeginIndex = html.indexOf(textBeginString)+textBeginString.length();
+  int losungEndIndex = html.indexOf(textEndString);
+
+  return html.substring(losungBeginIndex, losungEndIndex);
+}
+
+String getLehrtextFromHTML(String html) {
+  String losung = getLosungFromHTML(html);
+  int losungIndex = html.indexOf(losung);
+  int lehrtextBeginIndex = html.indexOf(textBeginString, losungIndex)+textBeginString.length();
+  int lehrtextEndIndex = html.indexOf(textEndString, losungIndex+losung.length()+textEndString.length());  // calculating is needed for better performance and to get the second index, not the first
+
+  return html.substring(lehrtextBeginIndex, lehrtextEndIndex);
+}
+
+String getLosungSourceFromHTML(String html) {  // get the source of losung in given html
+  int losungSourceBeginIndex = html.indexOf(sourceBeginString)+sourceBeginString.length();
+  int losungSourceEndIndex = html.indexOf(sourceEndString);
+
+  return html.substring(losungSourceBeginIndex, losungSourceEndIndex);
+}
+
+String getLehrtextSourceFromHTML(String html) {  // get the source of losung in given html
+  String losungSource = getLosungSourceFromHTML(html);
+  int losungSourceIndex = html.indexOf(losungSource);
+  int lehrtextSourceBeginIndex = html.indexOf(sourceBeginString, losungSourceIndex)+sourceBeginString.length();
+  int lehrtextSourceEndIndex = html.indexOf(sourceEndString, losungSourceIndex+losungSource.length()+sourceEndString.length());  // calculating is needed for better performance and to get the second index, not the first
+
+  return html.substring(lehrtextSourceBeginIndex, lehrtextSourceEndIndex);
+}

losungepaper.ino

@@ -32,11 +32,11 @@ void setup() {
   }
   Serial.println("[INFO] Initialized e-Paper!");
 
-  String losung = "Gott spricht: Ich will für Israel wie der Tau sein, dass es blüht wie eine Lilie.";
+  connectWiFi();
-  String lehrtext = "Ich bin der Weinstock, ihr seid die Reben. Wer in mir bleibt und ich in ihm, der bringt viel Frucht; denn ohne mich könnt ihr nichts tun.";
+  String html = getHTML("https://www.losungen.de/fileadmin/media-losungen/heute/2022/0821.html");
-  showDailyText(losung, lehrtext, "Hosea 14,6", "Johannes 15,5");
+  
+  showDailyText(getLosungFromHTML(html), getLehrtextFromHTML(html), getLosungSourceFromHTML(html), getLehrtextSourceFromHTML(html));
 }
 
 void loop() {
-  connectWiFi();
 }

wifi.ino

@@ -3,12 +3,12 @@
 void connectWiFi() {  // connect to the wifi with the above defined credentials
   if(WiFi.status() == WL_CONNECTED) { return; }  // return if not connected
   
-  Serial.println("Connecting to WiFi...");
+  Serial.println("[WiFi] Connecting to WiFi...");
 
   WiFi.begin(wiFiSSID, wiFiPSK);
-  delay(5000);  // pause the program 5 secs to give time for connection
+  delay(10000);  // pause the program 5 secs to give time for connection
-  if(WiFi.status() != WL_CONNECTED) { return; }
+  if(WiFi.status() != WL_CONNECTED) { Serial.printf("[WiFi] Failed connecting to WiFi \"%s\".", wiFiSSID); return; }
-  Serial.printf("Connected to WiFi %s, got IP-Adress ", wiFiSSID);
+  Serial.printf("[WiFi] Connected to WiFi \"%s\", got IP-Adress ", wiFiSSID);
   Serial.println(WiFi.localIP());
 
   return;