启动时等待usb连接

ESP32/my_usb_project/main/my_usb_project.c

@@ -92,7 +92,9 @@ void tud_hid_set_report_cb(uint8_t instance, uint8_t report_id, hid_report_type_
 
 // 暴露给 Rust 的函数
 bool rust_is_usb_mounted() {
-    return tud_mounted();
+    bool mounted = tud_mounted();
+    ESP_LOGD(TAG, "USB mounted state: %d", mounted);
+    return mounted;
 }
 
 void rust_send_keyboard_report(uint8_t report_id, uint8_t modifier, uint8_t const* keycode) {
@@ -145,12 +147,29 @@ void app_main(void)
     ESP_ERROR_CHECK(tinyusb_driver_install(&tusb_cfg));
 
     ESP_LOGI(TAG, "✅ USB HID 设备启动成功");
+    ESP_LOGI(TAG, "请连接 USB OTG 线到电脑");
 
-    ESP_LOGI(TAG, "启动 Rust 应用...");
-    rust_app_wrapper_init();
+    // 暂时禁用 Rust 应用，先测试 USB 稳定性
+    // rust_app_wrapper_init();
 
+    int count = 0;
+    bool last_mounted = false;
     while (1) {
         vTaskDelay(1000 / portTICK_PERIOD_MS);
-        ESP_LOGI(TAG, "USB 设备运行中...");
+        
+        bool mounted = tud_mounted();
+        if (mounted != last_mounted) {
+            if (mounted) {
+                ESP_LOGI(TAG, "🔌 USB 已连接到主机");
+            } else {
+                ESP_LOGI(TAG, "🔌 USB 已断开");
+            }
+            last_mounted = mounted;
+        }
+        
+        if (count % 10 == 0) {
+            ESP_LOGI(TAG, "USB 设备运行中... 挂载状态: %s", mounted ? "已连接" : "未连接");
+        }
+        count++;
     }
 }