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- /*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date Author Notes
- * 2018-12-13 balanceTWK add sdcard port file
- * 2019-06-11 WillianChan Add SD card hot plug detection
- */
- #include <rtthread.h>
- #ifdef BSP_USING_SDCARD
- #include <dfs_elm.h>
- #include <dfs_fs.h>
- #include <dfs_file.h>
- #include <unistd.h>
- #include <stdio.h>
- #include <sys/stat.h>
- #include <sys/statfs.h>
- #include "drv_gpio.h"
- #include "drv_sdio.h"
- #define DBG_TAG "app.card"
- #define DBG_LVL DBG_INFO
- #include <rtdbg.h>
- /* SD Card hot plug detection pin */
- #define SD_CHECK_PIN GET_PIN(G, 2)
- static void _sdcard_mount(void)
- {
- rt_device_t device;
- device = rt_device_find("sd0");
- if (device == NULL)
- {
- mmcsd_wait_cd_changed(0);
- stm32_mmcsd_change();
- mmcsd_wait_cd_changed(RT_WAITING_FOREVER);
- device = rt_device_find("sd0");
- }
- if (device != RT_NULL)
- {
- if (dfs_mount("sd0", "/", "elm", 0, 0) == RT_EOK)
- {
- LOG_I("sd card mount to '/'");
- }
- else
- {
- LOG_W("sd card mount to '/' failed!");
- }
- }
- }
- static void _sdcard_unmount(void)
- {
- rt_thread_mdelay(200);
- dfs_unmount("/");
- LOG_I("Unmount \"/\"");
- mmcsd_wait_cd_changed(0);
- stm32_mmcsd_change();
- mmcsd_wait_cd_changed(RT_WAITING_FOREVER);
- }
- static void sd_mount(void *parameter)
- {
- rt_uint8_t re_sd_check_pin = 1;
- while (1)
- {
- rt_thread_mdelay(200);
- if(re_sd_check_pin && (re_sd_check_pin = rt_pin_read(SD_CHECK_PIN)) == 0)
- {
- _sdcard_mount();
- }
- if (!re_sd_check_pin && (re_sd_check_pin = rt_pin_read(SD_CHECK_PIN)) != 0)
- {
- _sdcard_unmount();
- }
- }
- }
- int stm32_sdcard_mount(void)
- {
- rt_thread_t tid;
- rt_pin_mode(SD_CHECK_PIN, PIN_MODE_INPUT_PULLUP);
- tid = rt_thread_create("sd_mount", sd_mount, RT_NULL,
- 1024, RT_THREAD_PRIORITY_MAX - 2, 20);
- if (tid != RT_NULL)
- {
- rt_thread_startup(tid);
- }
- else
- {
- LOG_E("create sd_mount thread err!");
- }
- return RT_EOK;
- }
- INIT_APP_EXPORT(stm32_sdcard_mount);
- #endif /* BSP_USING_SDCARD */
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