feat(ota): 临时版本，添加zlib压缩支持和SPI通信优化

添加了zlib压缩功能以减少固件传输时间，特别是在弱网环境下
优化了SPI通信参数和错误处理机制

BREAKING CHANGE: 固件版本从0.3.0升级到0.3.1，增加了压缩传输协议

- 在WiFi OTA中集成zlib压缩/解压缩功能
- 添加压缩选项UI界面和前端压缩逻辑
- 修复SPI引脚配置错误(MOSI/MISO接反)
- 优化SPI通信参数设置增加CS时序控制
- 改进OTA重试机制和超时处理
- 扩展ota_relay组件栈大小从8K到12K
- 添加解压缩回调函数和上下文管理
- 更新固件版本号到0.3.1
- 添加更多调试日志和错误检查

tools/app.js

@@ -836,6 +836,29 @@ function clearFile(chip) {
 }
 
 // ==================== 上传固件 ====================
+// ==================== zlib compression ====================
+async function compressZlib(arrayBuffer) {
+  var cs = new CompressionStream("deflate");
+  var writer = cs.writable.getWriter();
+  writer.write(new Uint8Array(arrayBuffer));
+  writer.close();
+  var chunks = [];
+  var reader = cs.readable.getReader();
+  for (;;) {
+    var r = await reader.read();
+    if (r.done) break;
+    chunks.push(r.value);
+  }
+  var total = chunks.reduce(function(n, c) { return n + c.length; }, 0);
+  var out = new Uint8Array(total);
+  var off = 0;
+  for (var j = 0; j < chunks.length; j++) {
+    out.set(chunks[j], off);
+    off += chunks[j].length;
+  }
+  return out.buffer;
+}
+
 async function startUpload(chip) {
   var file = chip === 'esp32' ? esp32File : gd32File;
   if (!file || isUploading) return;
@@ -890,19 +913,45 @@ async function startUpload(chip) {
     var fileSize = file.size;
     var body, url = getBaseUrl() + '/ota/upload';
 
+    var useCompress = chip === 'esp32'
+      ? document.getElementById('compressEsp32').checked
+      : document.getElementById('compressGd32').checked;
+
     if (chip === 'esp32') {
-      var headerJson = JSON.stringify({ type: 'esp32', total_size: fileSize });
+      var headerObj = { type: 'esp32', total_size: fileSize };
+      var payload = arrayBuffer;
+      if (useCompress) {
+        payload = await compressZlib(arrayBuffer);
+        headerObj.compress = 'zlib';
+        addLog('I', '压缩', 'zlib: ' + formatBytes(fileSize) + ' -> ' + formatBytes(payload.byteLength) + ' (' + Math.round(payload.byteLength * 100 / fileSize) + '%)');
+      } else {
+        addLog('I', '上传', '直传（无压缩）: ' + formatBytes(fileSize));
+      }
+      var headerJson = JSON.stringify(headerObj);
       var encoder = new TextEncoder();
       var headerBytes = encoder.encode(headerJson);
-      var fileBytes = new Uint8Array(arrayBuffer);
-      var combined = new Uint8Array(headerBytes.length + fileSize);
+      var combined = new Uint8Array(headerBytes.length + payload.byteLength);
       combined.set(headerBytes, 0);
-      combined.set(fileBytes, headerBytes.length);
+      combined.set(new Uint8Array(payload), headerBytes.length);
       body = combined.buffer;
     } else {
-      body = arrayBuffer;
+      var headerObj = { total_size: fileSize };
+      var payload = arrayBuffer;
+      if (useCompress) {
+        payload = await compressZlib(arrayBuffer);
+        headerObj.compress = 'zlib';
+        addLog('I', '压缩', 'zlib: ' + formatBytes(fileSize) + ' -> ' + formatBytes(payload.byteLength) + ' (' + Math.round(payload.byteLength * 100 / fileSize) + '%)');
+      } else {
+        addLog('I', '上传', '直传（无压缩）: ' + formatBytes(fileSize));
+      }
+      var gd32Header = JSON.stringify(headerObj);
+      var encoder = new TextEncoder();
+      var headerBytes = encoder.encode(gd32Header);
+      var combined = new Uint8Array(headerBytes.length + payload.byteLength);
+      combined.set(headerBytes, 0);
+      combined.set(new Uint8Array(payload), headerBytes.length);
+      body = combined.buffer;
     }
-
     var xhr = new XMLHttpRequest();
     xhr.upload.addEventListener('progress', function (e) {
       if (e.lengthComputable) {

tools/index.html

@@ -69,6 +69,9 @@
               <div class="file-meta-item"><span>大小</span><b id="fileSizeEsp32">-</b></div>
             </div>
           </div>
+                    <label style="display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-dim);margin-top:8px;cursor:pointer;">
+            <input type="checkbox" id="compressEsp32"> zlib 压缩（弱网加速，CPU 开销大）
+          </label>
           <button class="btn btn-primary btn-block" id="uploadEsp32Btn" onclick="startUpload('esp32')" disabled style="margin-top:10px;">
             上传并升级 ESP32
           </button>
@@ -95,6 +98,9 @@
               <div class="file-meta-item"><span>大小</span><b id="fileSizeGd32">-</b></div>
             </div>
           </div>
+                    <label style="display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-dim);margin-bottom:4px;cursor:pointer;">
+            <input type="checkbox" id="compressGd32"> zlib 压缩（弱网加速，CPU 开销大）
+          </label>
           <button class="btn btn-success btn-block" id="uploadGd32Btn" onclick="startUpload('gd32')" disabled style="margin-top:10px;margin-bottom:8px;">
             上传固件到缓存
           </button>