mirror of
https://github.com/HASwitchPlate/openHASP.git
synced 2025-04-23 14:57:20 +00:00
343 lines
10 KiB
C
343 lines
10 KiB
C
/**
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* @file lv_fs_fatfs.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "lv_fs_if.h"
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#if LV_USE_FS_IF
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#if LV_FS_IF_FATFS != '\0'
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#include "ff.h"
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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/* Create a type to store the required data about your file.*/
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typedef FIL file_t;
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/*Similarly to `file_t` create a type for directory reading too */
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typedef DIR dir_t;
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static void fs_init(void);
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static lv_fs_res_t fs_open (lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode);
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static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p);
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static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
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static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
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static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos);
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static lv_fs_res_t fs_size (lv_fs_drv_t * drv, void * file_p, uint32_t * size_p);
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static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
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static lv_fs_res_t fs_remove (lv_fs_drv_t * drv, const char *path);
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static lv_fs_res_t fs_trunc (lv_fs_drv_t * drv, void * file_p);
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static lv_fs_res_t fs_rename (lv_fs_drv_t * drv, const char * oldname, const char * newname);
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static lv_fs_res_t fs_free (lv_fs_drv_t * drv, uint32_t * total_p, uint32_t * free_p);
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static lv_fs_res_t fs_dir_open (lv_fs_drv_t * drv, void * dir_p, const char *path);
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static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * dir_p, char *fn);
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static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * dir_p);
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/**********************
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* STATIC VARIABLES
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**********************/
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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void lv_fs_if_fatfs_init(void)
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{
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/*----------------------------------------------------
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* Initialize your storage device and File System
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* -------------------------------------------------*/
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fs_init();
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/*---------------------------------------------------
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* Register the file system interface in LittlevGL
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*--------------------------------------------------*/
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/* Add a simple drive to open images */
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lv_fs_drv_t fs_drv; /*A driver descriptor*/
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lv_fs_drv_init(&fs_drv);
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/*Set up fields...*/
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fs_drv.file_size = sizeof(file_t);
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fs_drv.letter = LV_FS_IF_FATFS;
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fs_drv.open_cb = fs_open;
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fs_drv.close_cb = fs_close;
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fs_drv.read_cb = fs_read;
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fs_drv.write_cb = fs_write;
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fs_drv.seek_cb = fs_seek;
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fs_drv.tell_cb = fs_tell;
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fs_drv.free_space_cb = fs_free;
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fs_drv.size_cb = fs_size;
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fs_drv.remove_cb = fs_remove;
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fs_drv.rename_cb = fs_rename;
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fs_drv.trunc_cb = fs_trunc;
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fs_drv.rddir_size = sizeof(dir_t);
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fs_drv.dir_close_cb = fs_dir_close;
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fs_drv.dir_open_cb = fs_dir_open;
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fs_drv.dir_read_cb = fs_dir_read;
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lv_fs_drv_register(&fs_drv);
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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/* Initialize your Storage device and File system. */
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static void fs_init(void)
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{
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/* Initialize the SD card and FatFS itself.
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* Better to do it in your code to keep this library utouched for easy updating*/
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}
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/**
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* Open a file
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* @param drv pointer to a driver where this function belongs
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* @param file_p pointer to a file_t variable
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* @param path path to the file beginning with the driver letter (e.g. S:/folder/file.txt)
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* @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
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* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_open (lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode)
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{
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uint8_t flags = 0;
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if(mode == LV_FS_MODE_WR) flags = FA_WRITE | FA_OPEN_ALWAYS;
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else if(mode == LV_FS_MODE_RD) flags = FA_READ;
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else if(mode == (LV_FS_MODE_WR | LV_FS_MODE_RD)) flags = FA_READ | FA_WRITE | FA_OPEN_ALWAYS;
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FRESULT res = f_open(file_p, path, flags);
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if(res == FR_OK) {
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f_lseek(file_p, 0);
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return LV_FS_RES_OK;
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} else {
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return LV_FS_RES_UNKNOWN;
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}
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}
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/**
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* Close an opened file
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* @param drv pointer to a driver where this function belongs
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* @param file_p pointer to a file_t variable. (opened with lv_ufs_open)
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* @return LV_FS_RES_OK: no error, the file is read
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* any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p)
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{
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f_close(file_p);
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return LV_FS_RES_OK;
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}
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/**
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* Read data from an opened file
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* @param drv pointer to a driver where this function belongs
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* @param file_p pointer to a file_t variable.
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* @param buf pointer to a memory block where to store the read data
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* @param btr number of Bytes To Read
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* @param br the real number of read bytes (Byte Read)
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* @return LV_FS_RES_OK: no error, the file is read
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* any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
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{
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FRESULT res = f_read(file_p, buf, btr, (UINT*)br);
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if(res == FR_OK) return LV_FS_RES_OK;
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else return LV_FS_RES_UNKNOWN;
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}
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/**
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* Write into a file
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* @param drv pointer to a driver where this function belongs
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* @param file_p pointer to a file_t variable
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* @param buf pointer to a buffer with the bytes to write
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* @param btr Bytes To Write
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* @param br the number of real written bytes (Bytes Written). NULL if unused.
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* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw)
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{
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FRESULT res = f_write(file_p, buf, btw, (UINT*)bw);
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if(res == FR_OK) return LV_FS_RES_OK;
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else return LV_FS_RES_UNKNOWN;
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}
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/**
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* Set the read write pointer. Also expand the file size if necessary.
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* @param drv pointer to a driver where this function belongs
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* @param file_p pointer to a file_t variable. (opened with lv_ufs_open )
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* @param pos the new position of read write pointer
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* @return LV_FS_RES_OK: no error, the file is read
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* any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos)
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{
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f_lseek(file_p, pos);
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return LV_FS_RES_OK;
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}
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/**
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* Give the size of a file bytes
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* @param drv pointer to a driver where this function belongs
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* @param file_p pointer to a file_t variable
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* @param size pointer to a variable to store the size
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* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_size (lv_fs_drv_t * drv, void * file_p, uint32_t * size_p)
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{
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(*size_p) = f_size(((file_t *)file_p));
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return LV_FS_RES_OK;
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}
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/**
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* Give the position of the read write pointer
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* @param drv pointer to a driver where this function belongs
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* @param file_p pointer to a file_t variable.
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* @param pos_p pointer to to store the result
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* @return LV_FS_RES_OK: no error, the file is read
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* any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
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{
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*pos_p = f_tell(((file_t *)file_p));
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return LV_FS_RES_OK;
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}
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/**
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* Delete a file
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* @param drv pointer to a driver where this function belongs
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* @param path path of the file to delete
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* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_remove (lv_fs_drv_t * drv, const char *path)
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{
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lv_fs_res_t res = LV_FS_RES_NOT_IMP;
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/* Add your code here*/
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return res;
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}
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/**
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* Truncate the file size to the current position of the read write pointer
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* @param drv pointer to a driver where this function belongs
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* @param file_p pointer to an 'ufs_file_t' variable. (opened with lv_fs_open )
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* @return LV_FS_RES_OK: no error, the file is read
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* any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_trunc (lv_fs_drv_t * drv, void * file_p)
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{
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f_sync(file_p); /*If not syncronized fclose can write the truncated part*/
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f_truncate(file_p);
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return LV_FS_RES_OK;
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}
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/**
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* Rename a file
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* @param drv pointer to a driver where this function belongs
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* @param oldname path to the file
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* @param newname path with the new name
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* @return LV_FS_RES_OK or any error from 'fs_res_t'
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*/
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static lv_fs_res_t fs_rename (lv_fs_drv_t * drv, const char * oldname, const char * newname)
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{
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FRESULT res = f_rename(oldname, newname);
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if(res == FR_OK) return LV_FS_RES_OK;
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else return LV_FS_RES_UNKNOWN;
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}
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/**
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* Get the free and total size of a driver in kB
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* @param drv pointer to a driver where this function belongs
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* @param letter the driver letter
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* @param total_p pointer to store the total size [kB]
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* @param free_p pointer to store the free size [kB]
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* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_free (lv_fs_drv_t * drv, uint32_t * total_p, uint32_t * free_p)
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{
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lv_fs_res_t res = LV_FS_RES_NOT_IMP;
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/* Add your code here*/
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return res;
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}
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/**
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* Initialize a 'fs_read_dir_t' variable for directory reading
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* @param drv pointer to a driver where this function belongs
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* @param dir_p pointer to a 'fs_read_dir_t' variable
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* @param path path to a directory
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* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_dir_open (lv_fs_drv_t * drv, void * dir_p, const char *path)
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{
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FRESULT res = f_opendir(dir_p, path);
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if(res == FR_OK) return LV_FS_RES_OK;
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else return LV_FS_RES_UNKNOWN;
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}
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/**
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* Read the next filename form a directory.
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* The name of the directories will begin with '/'
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* @param drv pointer to a driver where this function belongs
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* @param dir_p pointer to an initialized 'fs_read_dir_t' variable
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* @param fn pointer to a buffer to store the filename
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* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * dir_p, char *fn)
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{
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FRESULT res;
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FILINFO fno;
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fn[0] = '\0';
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do {
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res = f_readdir(dir_p, &fno);
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if(res != FR_OK) return LV_FS_RES_UNKNOWN;
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if(fno.fattrib & AM_DIR) {
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fn[0] = '/';
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strcpy(&fn[1], fno.fname);
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}
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else strcpy(fn, fno.fname);
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} while(strcmp(fn, "/.") == 0 || strcmp(fn, "/..") == 0);
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return LV_FS_RES_OK;
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}
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/**
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* Close the directory reading
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* @param drv pointer to a driver where this function belongs
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* @param dir_p pointer to an initialized 'fs_read_dir_t' variable
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* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
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*/
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static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * dir_p)
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{
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f_closedir(dir_p);
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return LV_FS_RES_OK;
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}
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#endif /*LV_USE_FS_IF*/
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#endif /*LV_FS_IF_FATFS*/
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