143 lines
3.1 KiB
C
143 lines
3.1 KiB
C
//SD 卡操作库，具体读写等操作请使用 FatFs 中的函数完成
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#include "stdio.h"
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#include "string.h"
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#include "key.h"
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#include "lcd.h"
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#include "ff.h"
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#include "ff_gen_drv.h"
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#include "sd_diskio_dma.h"
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#include "GameEngine.h"
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#include "SD.h"
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/**************************************** 全局变量 ****************************************/
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FATFS fs;
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char DiskPath[4] = {0, 0, 0, 0};
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/*****************************************************************************************/
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/**************************************** 私有函数 ****************************************/
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uint8_t SD_Mount(void);
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uint8_t SD_DeMount(void);
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/*****************************************************************************************/
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/**
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* @brief SD 卡初始化
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* @retval 成功返回 0，失败返回 1
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*/
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uint8_t SD_Init(void)
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{
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FATFS_LinkDriver(&SD_Driver, DiskPath);
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return SD_Mount();
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}
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/**
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* @brief SD 卡反初始化。在弹出 SD 卡前调用
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* @retval 成功返回 0，失败返回 1
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*/
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uint8_t SD_DeInit(void)
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{
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return SD_DeMount();
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}
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/**
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* @brief SD 卡挂载
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* @retval 成功返回 0，失败返回 1
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*/
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uint8_t SD_Mount(void)
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{
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if (f_mount(&fs, DiskPath, 0) != FR_OK)
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return SD_ERROR;
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else
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return SD_OK;
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}
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/**
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* @brief SD 卡卸载
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* @retval 成功返回 0，失败返回 1
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*/
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uint8_t SD_DeMount(void)
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{
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if (f_mount(NULL, DiskPath, 0) != FR_OK)
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return SD_ERROR;
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else
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return SD_OK;
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}
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/**
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* @brief SD 卡生成文件路径
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* @param filepath: 返回储存文件路径
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* @param filename: 文件名，含路径
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* @retval 成功返回 0，失败返回 1
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*/
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uint8_t SD_GetPath(uint8_t *filepath, uint8_t *filename)
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{
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if (DiskPath[0] == 0)
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return SD_ERROR;
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else
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sprintf(filepath, "%s%s", DiskPath, filename);
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return SD_OK;
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}
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/**
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* @brief SD 卡 GUI 文件选择器
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* @param filepath: 返回储存文件路径
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* @param filesuffix: 文件后缀名。NULL 时不限后缀
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* @retval 成功返回 0，失败返回 1，用户按下 JOY_L 返回 2
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*/
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uint8_t SD_SelectFile(uint8_t *filename, uint8_t *filesuffix)
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{
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DIR DirInf;
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FILINFO FileInf;
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uint32_t num;
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uint8_t content[GE_GUI_MENUBOX_MAX_CONTENT_NUM][GE_GUI_MENUBOX_CONTENT_LEN];
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if (f_opendir(&DirInf, DiskPath) != FR_OK)
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return SD_ERROR;
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for (num = 0; num < GE_GUI_MENUBOX_MAX_CONTENT_NUM;)
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{
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if (f_readdir(&DirInf, &FileInf) != FR_OK || FileInf.fname[0] == 0) //读取结束
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break;
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if (FileInf.fname[0] == '.' || strcmp(FileInf.fname, "System Volume Information") == 0) //跳过文件和文件夹
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continue;
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//判断是文件还是子目录
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if (FileInf.fattrib & AM_DIR)
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{
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sprintf(content[num], "%s/", (char *)FileInf.fname);
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}
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else
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{
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if (filesuffix != NULL)
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{
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char *suffix = strrchr(FileInf.fname, '.');
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suffix++;
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if (strcmp(suffix, filesuffix) != 0)
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continue;
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}
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sprintf(content[num], "%s", FileInf.fname);
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}
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num++;
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}
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uint8_t choice = GE_GUI_MenuBox(5, 5, 310, 230, "请选择文件：", num, content, NULL);
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if (choice == 0)
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return 2;
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strcpy(filename, content[choice - 1]);
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return SD_OK;
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}
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