[WIP] Add M5Atom Car example

example/m5atom-car/.gitignore

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+.env.h
+index.html
+index-html.h

example/m5atom-car/README.md

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+# M5Atom WiFi Control Car Example
+
+TODO: 説明を書く

example/m5atom-car/SimpleHTTPServer.h

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+// SimpleHTTPServer written by ChatGPT
+
+#include <WiFi.h>
+
+#define MAX_HANDLERS (16)
+
+class SimpleHTTPServer {
+private:
+    struct Handler {
+        const char* path;
+        void (*handler)(WiFiClient&, const String&);
+    };
+
+    const char* ssid;
+    const char* password;
+    WiFiServer server;
+    Handler getHandlers[MAX_HANDLERS];
+    Handler postHandlers[MAX_HANDLERS];
+    int getHandlerCount;
+    int postHandlerCount;
+
+public:
+    SimpleHTTPServer(const char* ssid, const char* password, int port = 80)
+        : ssid(ssid), password(password), server(port), getHandlerCount(0), postHandlerCount(0) {}
+
+    void begin() {
+        Serial.begin(115200);
+        connectToWiFi();
+        server.begin();
+        Serial.println("Server started");
+        Serial.print("IP Address: ");
+        Serial.println(WiFi.localIP());
+    }
+
+    void handleClient() {
+        WiFiClient client = server.available();
+        if (client) {
+            Serial.println("New Client.");
+            String currentLine = "";
+            String requestType = "";
+            String path = "";
+            String queryString = "";
+
+            while (client.connected()) {
+                if (client.available()) {
+                    char c = client.read();
+                    Serial.write(c);
+                    if (c == '\n') {
+                        if (currentLine.length() == 0) {
+                            if (requestType == "GET") {
+                                handleRequest(path, queryString, client, getHandlers, getHandlerCount);
+                            } else if (requestType == "POST") {
+                                handleRequest(path, queryString, client, postHandlers, postHandlerCount);
+                            }
+                            break;
+                        } else {
+                            currentLine = "";
+                        }
+                    } else if (c != '\r') {
+                        currentLine += c;
+                        if (currentLine.startsWith("GET ")) {
+                            requestType = "GET";
+                            path = extractPathAndQuery(currentLine, queryString);
+                        } else if (currentLine.startsWith("POST ")) {
+                            requestType = "POST";
+                            path = extractPathAndQuery(currentLine, queryString);
+                        }
+                    }
+                }
+            }
+            client.stop();
+            Serial.println("Client Disconnected.");
+        }
+    }
+
+    void get(const char* path, void (*handler)(WiFiClient&, const String&)) {
+        if (getHandlerCount < MAX_HANDLERS) {
+            getHandlers[getHandlerCount++] = { path, handler };
+        }
+    }
+
+    void post(const char* path, void (*handler)(WiFiClient&, const String&)) {
+        if (postHandlerCount < MAX_HANDLERS) {
+            postHandlers[postHandlerCount++] = { path, handler };
+        }
+    }
+
+private:
+    void connectToWiFi() {
+        Serial.print("Connecting to ");
+        Serial.println(ssid);
+        WiFi.begin(ssid, password);
+        while (WiFi.status() != WL_CONNECTED) {
+            delay(1000);
+            Serial.print(".");
+        }
+        Serial.println("");
+        Serial.println("WiFi connected.");
+    }
+
+    String extractPathAndQuery(const String& requestLine, String& queryString) {
+        int firstSpace = requestLine.indexOf(' ');
+        int secondSpace = requestLine.indexOf(' ', firstSpace + 1);
+        String fullPath = requestLine.substring(firstSpace + 1, secondSpace);
+
+        int queryIndex = fullPath.indexOf('?');
+        if (queryIndex != -1) {
+            queryString = fullPath.substring(queryIndex + 1);
+            return fullPath.substring(0, queryIndex);
+        } else {
+            queryString = "";
+            return fullPath;
+        }
+    }
+
+    void handleRequest(const String& path, const String& queryString, WiFiClient& client, Handler* handlers, int handlerCount) {
+        for (int i = 0; i < handlerCount; i++) {
+            if (path == handlers[i].path) {
+                handlers[i].handler(client, queryString);
+                return;
+            }
+        }
+        defaultResponse(client);
+    }
+
+    void defaultResponse(WiFiClient& client) {
+        client.println("HTTP/1.1 404 Not Found");
+        client.println("Content-type:text/html");
+        client.println();
+        client.print("<html><body><h1>404 Not Found</h1></body></html>");
+        client.println();
+    }
+};

example/m5atom-car/gen-index-html.bat

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+@echo off
+setlocal EnableDelayedExpansion
+
+powershell -Command "(New-Object Net.WebClient).DownloadFile('https://twosquirrels.github.io/virtual-gamepad/', 'index.html')"
+
+(
+    echo const char index_html[] = R"***(
+    type index.html 
+    echo )***";
+) > index-html.h
+
+echo index-html.h has been created successfully.

example/m5atom-car/gen-index-html.sh

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+#!/bin/bash
+
+curl -o index.html https://twosquirrels.github.io/virtual-gamepad/
+
+{
+    echo 'const char index_html[] = R"***('
+    cat index.html
+    echo ')***";'
+} > index-html.h
+
+echo "index-html.h has been created successfully."

example/m5atom-car/m5atom-car.ino

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+// WiFi Control Car Example
+
+#include "SimpleHTTPServer.h"
+#include <M5Atom.h>
+
+#define LEDright (22)
+#define LEDleft (19)
+#define MotorA (23)
+#define MotorB (33)
+
+const double PWM_freq = 2000;   // PWM周波数.
+const uint8_t PWM_res = 8; // PWM分解能 16bit(0～256).
+const uint8_t PWM_CH_A = 1;  // チャンネル.
+const uint8_t PWM_CH_B = 2;  // チャンネル.
+
+#if __has_include(".env.h")
+#  include ".env.h"
+#else
+const char ssid[] = "YOUR_SSID";
+const char password[] = "YOUR_PASSWORD";
+#endif
+
+#if __has_include("index-html.h")
+#  include "index-html.h"
+#else
+const char index_html[] = "<html><body><h1>There is not index-html.h</h1></body></html>";
+#endif
+
+SimpleHTTPServer server(ssid, password);
+
+void handleRoot(WiFiClient& client, const String& query) {
+    client.println("HTTP/1.1 200 OK");
+    client.println("Content-Type: text/html");
+    client.println();
+    client.println(index_html);
+}
+
+void respondOK(WiFiClient& client) {
+    client.println("HTTP/1.1 200 OK");
+    client.println("Content-Type: text/plain");
+    client.println();
+    client.println("OK");
+}
+
+void handlePostA(WiFiClient& client, const String& query) {
+    respondOK(client);
+    Serial.println("======== Pushed A button! ========");
+}
+
+void handlePostB(WiFiClient& client, const String& query) {
+    respondOK(client);
+    Serial.println("======== Pushed B button! ========");
+}
+
+void setup() {
+    M5.begin(false, false, true);
+    Serial.begin(115200);
+    M5.dis.drawpix(0, 0x0000FF);
+    pinMode(LEDright, OUTPUT);   
+    pinMode(LEDleft, OUTPUT);   
+    pinMode(MotorA, OUTPUT);   
+    pinMode(MotorB, OUTPUT);
+    //チャンネル1と周波数の分解能を設定.
+    ledcSetup(PWM_CH_A, PWM_freq, PWM_res);
+    //チャンネル2と周波数の分解能を設定.
+    ledcSetup(PWM_CH_B, PWM_freq, PWM_res);
+
+    //モータのピンとチャンネルの設定.
+    ledcAttachPin(MotorA, PWM_CH_A);
+    ledcAttachPin(MotorB, PWM_CH_B);
+
+    delay(10);
+
+    server.begin();
+
+    server.get("/", handleRoot);
+    server.post("/a", handlePostA);
+    server.post("/b", handlePostB);
+}
+
+void loop() {
+    server.handleClient();
+    M5.update();
+}

package.json

@@ -9,7 +9,8 @@
     "preview": "vite preview"
   },
   "devDependencies": {
-    "vite": "^5.3.1"
+    "vite": "^5.3.1",
+    "vite-plugin-singlefile": "^2.0.2"
   },
   "dependencies": {
     "nipplejs": "^0.10.2",