MediaWiki-API-Ergebnis
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"fromtitle": "Hauptseite",
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"totitle": "RFID Reader",
"*": "<tr><td colspan=\"2\" class=\"diff-lineno\" id=\"mw-diff-left-l1\" >Zeile 1:</td>\n<td colspan=\"2\" class=\"diff-lineno\">Zeile 1:</td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div><del class=\"diffchange\"><strong>MediaWiki wurde installiert.</strong></del></div></td><td colspan=\"2\"> </td></tr>\n<tr><td class='diff-marker'> </td><td class='diff-context'></td><td class='diff-marker'> </td><td class='diff-context'></td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div><del class=\"diffchange\">Hilfe zur Benutzung und Konfiguration der Wiki-Software findest du im [https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents Benutzerhandbuch].</del></div></td><td colspan=\"2\"> </td></tr>\n<tr><td class='diff-marker'> </td><td class='diff-context'></td><td class='diff-marker'> </td><td class='diff-context'></td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div>=<del class=\"diffchange diffchange-inline\">= Starthilfen =</del>=</div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div>= <ins class=\"diffchange diffchange-inline\">Source / Acknowledgements </ins>=</div></td></tr>\n<tr><td class='diff-marker'> </td><td class='diff-context'></td><td class='diff-marker'> </td><td class='diff-context'></td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div><del class=\"diffchange diffchange-inline\">* [https</del>://www.<del class=\"diffchange diffchange-inline\">mediawiki</del>.<del class=\"diffchange diffchange-inline\">org</del>/<del class=\"diffchange diffchange-inline\">wiki</del>/<del class=\"diffchange diffchange-inline\">Special</del>:<del class=\"diffchange diffchange-inline\">MyLanguage</del>/<del class=\"diffchange diffchange-inline\">Manual:Configuration_settings Liste der Konfigurationsvariablen]</del></div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">= Code =</ins></div></td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div><del class=\"diffchange diffchange-inline\">* </del>[<del class=\"diffchange diffchange-inline\">https:</del>//<del class=\"diffchange diffchange-inline\">www</del>.<del class=\"diffchange diffchange-inline\">mediawiki</del>.<del class=\"diffchange diffchange-inline\">org</del>/<del class=\"diffchange diffchange-inline\">wiki</del>/<del class=\"diffchange diffchange-inline\">Special</del>:<del class=\"diffchange diffchange-inline\">MyLanguage</del>/<del class=\"diffchange diffchange-inline\">Manual</del>:<del class=\"diffchange diffchange-inline\">FAQ MediaWiki-FAQ</del>]</div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"><pre></ins></div></td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div>* [<del class=\"diffchange diffchange-inline\">https:</del>//<del class=\"diffchange diffchange-inline\">lists</del>.<del class=\"diffchange diffchange-inline\">wikimedia</del>.<del class=\"diffchange diffchange-inline\">org/mailman/listinfo/mediawiki</del>-<del class=\"diffchange diffchange-inline\">announce Mailingliste neuer MediaWiki</del>-<del class=\"diffchange diffchange-inline\">Versionen</del>]</div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">// (c) Michael Schoeffler 2018, http</ins>://www.<ins class=\"diffchange diffchange-inline\">mschoeffler</ins>.<ins class=\"diffchange diffchange-inline\">de</ins></div></td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div><del class=\"diffchange diffchange-inline\">* </del>[<del class=\"diffchange diffchange-inline\">https</del>://<del class=\"diffchange diffchange-inline\">www</del>.<del class=\"diffchange diffchange-inline\">mediawiki</del>.<del class=\"diffchange diffchange-inline\">org</del>/<del class=\"diffchange diffchange-inline\">wiki</del>/<del class=\"diffchange diffchange-inline\">Special:MyLanguage</del>/<del class=\"diffchange diffchange-inline\">Localisation#Translation_resources \u00dcbersetze MediaWiki f\u00fcr deine Sprache]</del></div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">#include <SoftwareSerial.h></ins></div></td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div>* [<del class=\"diffchange diffchange-inline\">https:</del>//<del class=\"diffchange diffchange-inline\">www</del>.<del class=\"diffchange diffchange-inline\">mediawiki</del>.<del class=\"diffchange diffchange-inline\">org</del>/<del class=\"diffchange diffchange-inline\">wiki</del>/<del class=\"diffchange diffchange-inline\">Special:MyLanguage</del>/<del class=\"diffchange diffchange-inline\">Manual:Combating_spam Erfahre, wie du Spam auf deinem Wiki bek\u00e4mpfen kannst]</del></div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">const int BUFFER_SIZE = 14; </ins>// <ins class=\"diffchange diffchange-inline\">RFID DATA FRAME FORMAT: 1byte head (value: 2), 10byte data (2byte version + 8byte tag), 2byte checksum, 1byte tail (value</ins>: <ins class=\"diffchange diffchange-inline\">3)</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">const int DATA_SIZE = 10; </ins>/<ins class=\"diffchange diffchange-inline\">/ 10byte data (2byte version + 8byte tag)</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">const int DATA_VERSION_SIZE = 2; // 2byte version (actual meaning of these two bytes may vary)</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">const int DATA_TAG_SIZE = 8; // 8byte tag</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">const int CHECKSUM_SIZE = 2; // 2byte checksum</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">SoftwareSerial ssrfid = SoftwareSerial(6,8); </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">uint8_t buffer</ins>[<ins class=\"diffchange diffchange-inline\">BUFFER_SIZE]; </ins>// <ins class=\"diffchange diffchange-inline\">used to store an incoming data frame </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">int buffer_index = 0;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">void setup() {</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> Serial.begin(9600); </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> ssrfid.begin(9600);</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> ssrfid.listen(); </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> Serial.println("INIT DONE");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">}</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">void loop() {</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">  if (ssrfid</ins>.<ins class=\"diffchange diffchange-inline\">available() > 0){</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    bool call_extract_tag = false;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    int ssvalue = ssrfid</ins>.<ins class=\"diffchange diffchange-inline\">read(); // read </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    if (ssvalue == -1) { /</ins>/ <ins class=\"diffchange diffchange-inline\">no data was read</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      return;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    }</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    if (ssvalue == 2) { </ins>/<ins class=\"diffchange diffchange-inline\">/ RDM630/RDM6300 found a tag => tag incoming </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      buffer_index = 0;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    } else if (ssvalue == 3) { // tag has been fully transmitted      </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      call_extract_tag = true; // extract tag at the end of the function call</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    }</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    if (buffer_index >= BUFFER_SIZE) { // checking for a buffer overflow (It's very unlikely that an buffer overflow comes up!)</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      Serial.println("Error</ins>: <ins class=\"diffchange diffchange-inline\">Buffer overflow detected!");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      return;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    }</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    buffer[buffer_index++] = ssvalue; // everything is alright => copy current value to buffer</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    if (call_extract_tag == true) {</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      if (buffer_index == BUFFER_SIZE) {</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">        unsigned tag = extract_tag();</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      } else { /</ins>/ <ins class=\"diffchange diffchange-inline\">something is wrong... start again looking for preamble (value</ins>: <ins class=\"diffchange diffchange-inline\">2)</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">        buffer_index = 0;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">        return;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      }</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    }    </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">  }    </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">}</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">unsigned extract_tag() {</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    uint8_t msg_head = buffer[0</ins>]<ins class=\"diffchange diffchange-inline\">;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    uint8_t *msg_data = buffer + 1; // 10 byte => data contains 2byte version + 8byte tag</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    uint8_t *msg_data_version = msg_data;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    uint8_t </ins>*<ins class=\"diffchange diffchange-inline\">msg_data_tag = msg_data + 2;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    uint8_t *msg_checksum = buffer + 11; // 2 byte</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    uint8_t msg_tail = buffer</ins>[<ins class=\"diffchange diffchange-inline\">13];</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    /</ins>/ <ins class=\"diffchange diffchange-inline\">print message that was sent from RDM630</ins>/<ins class=\"diffchange diffchange-inline\">RDM6300</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial</ins>.<ins class=\"diffchange diffchange-inline\">println("--------");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial</ins>.<ins class=\"diffchange diffchange-inline\">print("Message</ins>-<ins class=\"diffchange diffchange-inline\">Head: ");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.println(msg_head);</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.println("Message</ins>-<ins class=\"diffchange diffchange-inline\">Data (HEX): ");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    for (int i = 0; i < DATA_VERSION_SIZE; ++i) {</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      Serial.print(char(msg_data_version[i]));</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    }</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.println(" (version)");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    for (int i = 0; i < DATA_TAG_SIZE; ++i) {</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      Serial.print(char(msg_data_tag[i</ins>]<ins class=\"diffchange diffchange-inline\">));</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    }</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.println(" (tag)");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.print("Message-Checksum (HEX): ");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    for (int i = 0; i < CHECKSUM_SIZE; ++i) {</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      Serial.print(char(msg_checksum</ins>[<ins class=\"diffchange diffchange-inline\">i]));</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    }</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.println("");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.print("Message-Tail: ");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.println(msg_tail);</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.println("--");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    long tag = hexstr_to_value(msg_data_tag, DATA_TAG_SIZE);</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.print("Extracted Tag: ");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.println(tag);</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    long checksum = 0;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    for (int i = 0; i < DATA_SIZE; i+= CHECKSUM_SIZE) {</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      long val = hexstr_to_value(msg_data + i, CHECKSUM_SIZE);</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      checksum ^= val;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    }</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.print("Extracted Checksum (HEX)</ins>: <ins class=\"diffchange diffchange-inline\">");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.print(checksum, HEX);</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    if (checksum == hexstr_to_value(msg_checksum, CHECKSUM_SIZE)) { </ins>// <ins class=\"diffchange diffchange-inline\">compare calculated checksum to retrieved checksum</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      Serial</ins>.<ins class=\"diffchange diffchange-inline\">print(" (OK)"); // calculated checksum corresponds to transmitted checksum!</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    } else {</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">      Serial</ins>.<ins class=\"diffchange diffchange-inline\">print(" (NOT OK)"); </ins>// <ins class=\"diffchange diffchange-inline\">checksums do not match</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    }</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.println("");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    Serial.println("--------");</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">    return tag;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">}</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div> </div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">long hexstr_to_value(char *str, unsigned int length) { /</ins>/ <ins class=\"diffchange diffchange-inline\">converts a hexadecimal value (encoded as ASCII string) to a numeric value</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">  char* copy = malloc((sizeof(char) * length) + 1); </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">  memcpy(copy, str, sizeof(char) </ins>* <ins class=\"diffchange diffchange-inline\">length);</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">  copy</ins>[<ins class=\"diffchange diffchange-inline\">length] = '\\0'; </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">  </ins>// <ins class=\"diffchange diffchange-inline\">the variable "copy" is a copy of the parameter "str"</ins>. <ins class=\"diffchange diffchange-inline\">"copy" has an additional '\\0' element to make sure that "str" is null-terminated</ins>.</div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">  long value = strtol(copy, NULL, 16);  // strtol converts a null-terminated string to a long value</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">  free(copy); </ins>// <ins class=\"diffchange diffchange-inline\">clean up </ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">  return value;</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">}</ins></div></td></tr>\n<tr><td colspan=\"2\"> </td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"><</ins>/<ins class=\"diffchange diffchange-inline\">pre></ins></div></td></tr>\n"
}
}