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95 lines
2.5 KiB
95 lines
2.5 KiB
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2021-07-29 andy the first version
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*/
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#include <rtthread.h>
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#include "dfs_fs.h"
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#define DBG_TAG "mount_fs"
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#define DBG_LVL DBG_LOG
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#include <rtdbg.h>
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rt_sem_t mount_sem = RT_NULL;
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void sd_mount(void *parameter)
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{
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LOG_I("SD mount thread started, waiting for SD card...");
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int retry = 0;
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while (retry<10)
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{
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if (rt_device_find("sd0") != RT_NULL)
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{
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if (dfs_mount("sd0", "/", "elm", 0, 0) == RT_EOK)
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{
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LOG_I("SD card mounted to '/' successfully");
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// 挂载成功，释放信号量
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if (mount_sem != RT_NULL)
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{
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rt_sem_release(mount_sem);
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}
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break; // 退出线程循环
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}
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else
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{
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LOG_W("SD card mount failed, retrying...");
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}
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}
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else
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{
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LOG_D("SD device 'sd0' not found, retrying...");
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}
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// 避免空转，延时 100ms 再试
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rt_thread_mdelay(500);
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retry++;
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}
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}
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int stm32_sdcard_mount(void)
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{
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rt_thread_t tid;
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// 删除旧的信号量（如果存在）
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if (mount_sem != RT_NULL)
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{
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rt_sem_delete(mount_sem);
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}
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// 创建计数信号量，初始值为 0
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mount_sem = rt_sem_create("sd_mount", 0, RT_IPC_FLAG_FIFO);
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if (mount_sem == RT_NULL)
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{
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LOG_E("Failed to create semaphore for SD mount!");
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return -RT_ENOMEM;
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}
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tid = rt_thread_create("sd_mount",
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sd_mount,
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RT_NULL,
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4096, // 建议增大栈，避免溢出
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RT_THREAD_PRIORITY_MAX - 2,
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20);
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if (tid != RT_NULL)
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{
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rt_thread_startup(tid);
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LOG_I("SD mount thread created and started");
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}
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else
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{
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LOG_E("Failed to create SD mount thread!");
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rt_sem_delete(mount_sem);
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mount_sem = RT_NULL;
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return -RT_ERROR;
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}
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return RT_EOK;
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}
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// 使用 INIT_COMPONENTS_INIT 或 INIT_APP_EXPORT 自动启动
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//INIT_COMPONENTS_INIT(stm32_sdcard_mount); // 在组件初始化阶段运行
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INIT_APP_EXPORT(stm32_sdcard_mount);
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