/* * 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 #include "dfs_fs.h" #define DBG_TAG "mount_fs" #define DBG_LVL DBG_LOG #include 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("sd0") != RT_NULL) { if (dfs_mount("sd0", "/", "elm", 0, 0) == 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 'sd0' 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; // 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, 4096, // 建议增大栈,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);