105 lines
3.5 KiB
C
105 lines
3.5 KiB
C
/**
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****************************************************************************************************
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* @file spi_sdcard.c
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* @author 正点原子团队(ALIENTEK)
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* @version V1.0
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* @date 2025-01-01
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* @brief SD卡 驱动代码
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* @license Copyright (c) 2020-2032, 广州市星翼电子科技有限公司
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****************************************************************************************************
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* @attention
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*
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* 实验平台:正点原子 ESP32-S3 开发板
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* 在线视频:www.yuanzige.com
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* 技术论坛:www.openedv.com
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* 公司网址:www.alientek.com
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* 购买地址:openedv.taobao.com
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*
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****************************************************************************************************
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*/
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#include "spi_sd.h"
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sdmmc_card_t *card; /* SD / MMC卡结构 */
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const char mount_point[] = MOUNT_POINT; /* 挂载点/根目录 */
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esp_err_t ret = ESP_OK;
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esp_err_t mount_ret = ESP_FAIL;
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/**
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* @brief SD卡初始化
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* @param 无
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* @retval esp_err_t
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*/
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esp_err_t sd_spi_init(void)
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{
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ret = ESP_OK;
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if (MY_SD_Handle != NULL) /* 再一次挂载或者初始化SD卡 */
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{
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if (mount_ret == ESP_OK)
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{
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esp_vfs_fat_sdcard_unmount(mount_point, card); /* 取消挂载 */
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mount_ret = ESP_FAIL;
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}
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}
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else if (MY_SD_Handle == NULL) /* 未初始化SPI驱动 */
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{
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my_spi_init(); /* 初始化SPI驱动 */
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}
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/* 文件系统挂载配置 */
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esp_vfs_fat_sdmmc_mount_config_t mount_config = {
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.format_if_mount_failed = false, /* 如果挂载失败：true会重新分区和格式化/false不会重新分区和格式化 */
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.max_files = 5, /* 打开文件最大数量 */
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.allocation_unit_size = 4 * 1024 * sizeof(uint8_t) /* 硬盘分区簇的大小 */
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};
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/* SD卡参数配置 */
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sdmmc_host_t host = SDSPI_HOST_DEFAULT();
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/* SD卡引脚配置 */
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sdspi_device_config_t slot_config = {0};
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slot_config.host_id = host.slot;
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slot_config.gpio_cs = SD_NUM_CS;
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slot_config.gpio_cd = GPIO_NUM_NC;
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slot_config.gpio_wp = GPIO_NUM_NC;
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slot_config.gpio_int = GPIO_NUM_NC;
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mount_ret = esp_vfs_fat_sdspi_mount(mount_point, &host, &slot_config, &mount_config, &card); /* 挂载文件系统 */
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ret |= mount_ret;
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vTaskDelay(pdMS_TO_TICKS(10));
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return ret;
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}
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/**
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* @brief 获取SD卡相关信息
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* @param out_total_bytes：总大小
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* @param out_free_bytes：剩余大小
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* @retval 无
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*/
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void sd_get_fatfs_usage(size_t *out_total_bytes, size_t *out_free_bytes)
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{
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FATFS *fs;
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size_t free_clusters;
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int res = f_getfree("0:", (DWORD *)&free_clusters, &fs);
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assert(res == FR_OK);
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size_t total_sectors = (fs->n_fatent - 2) * fs->csize;
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size_t free_sectors = free_clusters * fs->csize;
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size_t sd_total = total_sectors / 1024;
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size_t sd_total_KB = sd_total * fs->ssize;
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size_t sd_free = free_sectors / 1024;
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size_t sd_free_KB = sd_free*fs->ssize;
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/* 假设总大小小于4GiB，对于SPI Flash应该为true */
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if (out_total_bytes != NULL)
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{
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*out_total_bytes = sd_total_KB;
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}
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if (out_free_bytes != NULL)
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{
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*out_free_bytes = sd_free_KB;
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}
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}
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