105 lines
2.2 KiB
C
105 lines
2.2 KiB
C
/*
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* Copyright (c) 2006-2018, 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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* 2018-12-13 balanceTWK add sdcard port file
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* 2019-06-11 WillianChan Add SD card hot plug detection
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*/
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#include <rtthread.h>
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#ifdef BSP_USING_SDCARD
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#include <dfs_elm.h>
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#include <dfs_fs.h>
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#include <dfs_posix.h>
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#include "drv_gpio.h"
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#include "drv_sdio.h"
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#define DBG_TAG "app.card"
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#define DBG_LVL DBG_INFO
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#include <rtdbg.h>
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/* SD Card hot plug detection pin */
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#define SD_CHECK_PIN GET_PIN(G, 2)
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static void _sdcard_mount(void)
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{
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rt_device_t device;
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device = rt_device_find("sd0");
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if (device == NULL)
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{
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mmcsd_wait_cd_changed(0);
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stm32_mmcsd_change();
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mmcsd_wait_cd_changed(RT_WAITING_FOREVER);
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device = rt_device_find("sd0");
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}
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if (device != 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 mount to '/'");
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}
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else
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{
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LOG_W("sd card mount to '/' failed!");
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}
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}
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}
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static void _sdcard_unmount(void)
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{
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rt_thread_mdelay(200);
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dfs_unmount("/");
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LOG_I("Unmount \"/\"");
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mmcsd_wait_cd_changed(0);
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stm32_mmcsd_change();
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mmcsd_wait_cd_changed(RT_WAITING_FOREVER);
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}
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static void sd_mount(void *parameter)
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{
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rt_uint8_t re_sd_check_pin = 1;
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while (1)
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{
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rt_thread_mdelay(200);
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if(re_sd_check_pin && (re_sd_check_pin = rt_pin_read(SD_CHECK_PIN)) == 0)
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{
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_sdcard_mount();
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}
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if (!re_sd_check_pin && (re_sd_check_pin = rt_pin_read(SD_CHECK_PIN)) != 0)
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{
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_sdcard_unmount();
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}
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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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rt_pin_mode(SD_CHECK_PIN, PIN_MODE_INPUT_PULLUP);
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tid = rt_thread_create("sd_mount", sd_mount, RT_NULL,
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1024, RT_THREAD_PRIORITY_MAX - 2, 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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}
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else
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{
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LOG_E("create sd_mount thread err!");
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}
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return RT_EOK;
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}
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INIT_APP_EXPORT(stm32_sdcard_mount);
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#endif /* BSP_USING_SDCARD */
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