Separate old OBD display project from vendor demo folder

- Move user sketches to 10-OBD-Display-2024/, one folder per sketch
- Keep 2-Program Example/Demo_Arduino vendor-only, single docs/ copy
- Remove duplicate screenshots/instructions and ELMulator zip
- Archive broken LVGL 9 attempt

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

10-OBD-Display-2024/elmulator/examples/ESP32_Custom_ELMulator/OBDWiFiComm.cpp

@@ -0,0 +1,151 @@
+#include "OBDWiFiComm.h"
+#include "definitions.h"
+
+WiFiServer server(35000);
+IPAddress localIP = IPAddress(192, 168, 0, 10);
+IPAddress gateway = IPAddress(192, 168, 0, 10);
+IPAddress subnet = IPAddress(255,255,255,0);
+
+OBDWiFiComm::OBDWiFiComm() {
+    
+}
+
+OBDWiFiComm::~OBDWiFiComm() {
+}
+
+void OBDWiFiComm::init(const String& deviceName) {
+    Serial.println("Starting AP . . .");
+   
+    WiFi.softAPConfig(localIP, gateway, subnet);
+    WiFi.softAP(deviceName);
+    
+    IPAddress myIP = WiFi.softAPIP();
+    Serial.print("AP IP address: ");
+    Serial.println(myIP);
+    Serial.print("AP SSID: ");
+    Serial.println(deviceName);
+    server.begin();
+    setToDefaults();
+}
+
+void OBDWiFiComm::writeEnd() {
+
+    // 1 - write carriage return
+    writeTo("\r");
+
+    // 2- (optional ) write linefeed
+    if (lineFeedEnable) {
+        writeTo("\n");
+    }
+
+    // 3 - Write prompt
+    writeTo(">");
+};
+
+
+void OBDWiFiComm::writeEndOK() {
+    writeTo("OK");
+    writeEnd();
+}
+
+void OBDWiFiComm::writeEndERROR() {
+    writeTo("ERROR");
+    writeEnd();
+}
+
+void OBDWiFiComm::writeEndNoData() {
+    writeTo("NO DATA");
+    writeEnd();
+}
+
+void OBDWiFiComm::writeEndUnknown() {
+    writeTo("?");
+    writeEnd();
+}
+
+void OBDWiFiComm::setToDefaults() {
+    setEcho(true);
+    setStatus(READY);
+    setWhiteSpaces(true);
+    setHeaders(false);
+    setLineFeeds(true);
+    setMemory(false);
+}
+
+void OBDWiFiComm::writeTo(char const *response) {
+    client.print(response);
+}
+
+
+void OBDWiFiComm::writeTo(uint8_t cChar) {
+    client.print(cChar);
+}
+
+void OBDWiFiComm::writeEndPidTo(char const *response) {
+    if (this->whiteSpacesEnabled) {
+        uint8_t len = strlen(response);
+        char spacedResponse[len + len / 2 + 1];
+        addSpacesToResponse(response, spacedResponse);
+        writeTo(spacedResponse);
+    } else {
+        writeTo(response);
+    }
+    writeEnd();
+}
+
+void OBDWiFiComm::readData(String& rxData) {
+    if (!client.connected()) {
+        client = server.available();
+    }
+
+    if(client)
+    {
+        rxData
+         = client.readStringUntil(SERIAL_END_CHAR);
+        if (isEchoEnable()) 
+        {
+            writeTo(rxData.c_str());
+        }
+    }
+}
+
+bool OBDWiFiComm::isEchoEnable() {
+    return this->echoEnable;
+}
+
+void OBDWiFiComm::setEcho(bool echo) {
+    this->echoEnable = echo;
+}
+
+void OBDWiFiComm::setStatus(STATUS status) {
+    this->status = status;
+}
+
+void OBDWiFiComm::setLineFeeds(bool status) {
+    this->lineFeedEnable = status;
+}
+
+void OBDWiFiComm::setMemory(bool status) {
+    this->memoryEnabled = status;
+}
+
+void OBDWiFiComm::setWhiteSpaces(bool status) {
+    this->whiteSpacesEnabled = status;
+}
+
+void OBDWiFiComm::setHeaders(bool status) {
+    this->headersEnabled = status;
+}
+
+void OBDWiFiComm::addSpacesToResponse(const char *response, char spacedRes[]) {
+    uint8_t len = strlen(response);
+    int j = 0;
+    for (int i = 0; i < len;) {
+        *(spacedRes + j++) = *(response + i++);
+        *(spacedRes + j++) = *(response + i++);
+        if (i < len) {
+            *(spacedRes + j++) = 0x20;
+        }
+    }
+    *(spacedRes + j) = '\0';
+}