添加sdio驱动

文件系统挂载

applications/SDIO_elmfatfs.c

@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-07-29     andy       the first version
+ */
+#include <rtthread.h>
+#include "dfs_fs.h"
+
+
+#define DBG_TAG "mount_fs"
+#define DBG_LVL DBG_LOG
+#include <rtdbg.h>
+
+rt_sem_t mount_sem = RT_NULL;
+
+void sd_mount(void *parameter)
+{
+    LOG_I("SD mount thread started, waiting for SD card...");
+    int retry = 0;
+       while (retry<10)
+       {
+           if (rt_device_find("sd") != RT_NULL)
+           {
+               if (dfs_mount("sd", "/", "elm", 0, NULL) == RT_EOK)
+               {
+                   LOG_I("SD card mounted to '/' successfully");
+                   // 挂载成功，释放信号量
+                   if (mount_sem != RT_NULL)
+                   {
+                       rt_sem_release(mount_sem);
+                   }
+                   break; // 退出线程循环
+               }
+               else
+               {
+                   LOG_W("SD card mount failed, retrying...");
+               }
+           }
+           else
+           {
+               LOG_D("SD device 'sd' not found, retrying...");
+           }
+
+           // 避免空转，延时 100ms 再试
+           rt_thread_mdelay(500);
+           retry++;
+       }
+}
+
+int stm32_sdcard_mount(void)
+{
+    rt_thread_t tid;
+    rt_thread_mdelay(1000);
+      // 删除旧的信号量（如果存在）
+      if (mount_sem != RT_NULL)
+      {
+          rt_sem_delete(mount_sem);
+      }
+
+      // 创建计数信号量，初始值为 0
+      mount_sem = rt_sem_create("sd_mount", 0, RT_IPC_FLAG_FIFO);
+      if (mount_sem == RT_NULL)
+      {
+          LOG_E("Failed to create semaphore for SD mount!");
+          return -RT_ENOMEM;
+      }
+
+      tid = rt_thread_create("sd_mount",
+                             sd_mount,
+                             RT_NULL,
+                             1024*6,  // 避免溢出
+                             RT_THREAD_PRIORITY_MAX - 2,
+                             20);
+      if (tid != RT_NULL)
+      {
+          rt_thread_startup(tid);
+          LOG_I("SD mount thread created and started");
+      }
+      else
+      {
+          LOG_E("Failed to create SD mount thread!");
+          rt_sem_delete(mount_sem);
+          mount_sem = RT_NULL;
+          return -RT_ERROR;
+      }
+
+      return RT_EOK;
+}
+// 使用 INIT_COMPONENTS_INIT 或 INIT_APP_EXPORT 自动启动
+//INIT_COMPONENTS_INIT(stm32_sdcard_mount);  // 在组件初始化阶段运行
+INIT_APP_EXPORT(stm32_sdcard_mount);

applications/main.c

@@ -15,8 +15,12 @@
 #define DBG_LVL DBG_LOG
 #include <rtdbg.h>
 
+extern rt_sem_t mount_sem;  // 引用上面SD挂载线程定义的信号量
+
 int main(void)
 {
+    rt_sem_take(mount_sem, rt_tick_from_millisecond(5000)); // 等待挂载完成，最多等待 5 秒
+    rt_thread_mdelay(500);
 
     thread_RUN_LED();//运行指示灯线程
     return RT_EOK;