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openHASP/lib/lv_fs_if/lv_fs_spiffs.cpp
fvanroie cb4daf442c Add png support
2021-05-10 06:36:05 +02:00

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/**
* @file lv_fs_spiffs.c
*
*/
/*********************
* INCLUDES
*********************/
#ifdef ARDUINO
#include <Arduino.h>
#include "lv_fs_if.h"
#include "lv_fs_spiffs.h"
#include "ArduinoLog.h"
#if LV_USE_FS_IF
#if LV_FS_IF_SPIFFS != '\0'
#if defined(ARDUINO_ARCH_ESP32)
#if HASP_USE_SPIFFS > 0
#include "SPIFFS.h"
#define LV_FS_SPIFFS SPIFFS
#elif HASP_USE_LITTLEFS > 0
#include "LITTLEFS.h"
#include "esp_littlefs.h"
#define LV_FS_SPIFFS LITTLEFS
#endif
#elif defined(ARDUINO_ARCH_ESP8266)
#include "LittleFS.h"
#define LV_FS_SPIFFS LittleFS
#endif // ARDUINO_ARCH
#if defined(ARDUINO_ARCH_ESP8266) || defined(ARDUINO_ARCH_ESP32)
#include <FS.h>
#include <Esp.h>
#endif // ARDUINO_ARCH
#define TAG_LVFS 91
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/* Create a type to store the required data about your file.*/
typedef FILE* lv_spiffs_file_t;
/*Similarly to `file_t` create a type for directory reading too */
#if defined(ARDUINO_ARCH_ESP32)
typedef FILE* lv_spiffs_dir_t;
#elif defined(ARDUINO_ARCH_ESP8266)
typedef Dir* lv_spiffs_dir_t;
#define FILE_READ "r"
#define FILE_WRITE "r+"
#endif
/**********************
* STATIC PROTOTYPES
**********************/
static void fs_init(void);
static lv_fs_res_t fs_open(lv_fs_drv_t* drv, void* file_p, const char* path, lv_fs_mode_t mode);
static lv_fs_res_t fs_close(lv_fs_drv_t* drv, void* file_p);
static lv_fs_res_t fs_read(lv_fs_drv_t* drv, void* file_p, void* buf, uint32_t btr, uint32_t* br);
static lv_fs_res_t fs_write(lv_fs_drv_t* drv, void* file_p, const void* buf, uint32_t btw, uint32_t* bw);
static lv_fs_res_t fs_seek(lv_fs_drv_t* drv, void* file_p, uint32_t pos);
static lv_fs_res_t fs_size(lv_fs_drv_t* drv, void* file_p, uint32_t* size_p);
static lv_fs_res_t fs_tell(lv_fs_drv_t* drv, void* file_p, uint32_t* pos_p);
static lv_fs_res_t fs_remove(lv_fs_drv_t* drv, const char* path);
static lv_fs_res_t fs_trunc(lv_fs_drv_t* drv, void* file_p);
static lv_fs_res_t fs_rename(lv_fs_drv_t* drv, const char* oldname, const char* newname);
static lv_fs_res_t fs_free(lv_fs_drv_t* drv, uint32_t* total_p, uint32_t* free_p);
static lv_fs_res_t fs_dir_open(lv_fs_drv_t* drv, void* dir_p, const char* path);
static lv_fs_res_t fs_dir_read(lv_fs_drv_t* drv, void* dir_p, char* fn);
static lv_fs_res_t fs_dir_close(lv_fs_drv_t* drv, void* dir_p);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void lv_fs_if_spiffs_init(void)
{
/*----------------------------------------------------
* Initialize your storage device and File System
* -------------------------------------------------*/
Log.verbose(88, "File system init start");
fs_init();
/*---------------------------------------------------
* Register the file system interface in LittlevGL
*--------------------------------------------------*/
/* Add a simple drive to open images */
static lv_fs_drv_t fs_drv; /*A driver descriptor*/
lv_fs_drv_init(&fs_drv);
/*Set up fields...*/
fs_drv.file_size = sizeof(lv_spiffs_file_t);
fs_drv.letter = LV_FS_IF_SPIFFS;
fs_drv.open_cb = fs_open;
fs_drv.close_cb = fs_close;
fs_drv.read_cb = fs_read;
fs_drv.write_cb = fs_write;
fs_drv.seek_cb = fs_seek;
fs_drv.tell_cb = fs_tell;
fs_drv.free_space_cb = fs_free;
fs_drv.size_cb = fs_size;
// fs_drv.remove_cb = fs_remove;
// fs_drv.rename_cb = fs_rename;
// fs_drv.trunc_cb = fs_trunc;
// fs_drv.rddir_size = sizeof(lv_spiffs_dir_t);
// fs_drv.dir_close_cb = fs_dir_close;
// fs_drv.dir_open_cb = fs_dir_open;
// fs_drv.dir_read_cb = fs_dir_read;
lv_fs_drv_register(&fs_drv);
Log.verbose(88, "File system init complete");
}
/**********************
* STATIC FUNCTIONS
**********************/
/* Initialize your Storage device and File system. */
static void fs_init(void)
{
esp_vfs_littlefs_conf_t conf = {.base_path = "/lfs", .partition_label = "spiffs", .format_if_mount_failed = false};
esp_err_t res = esp_vfs_littlefs_register(&conf);
if(res != ESP_OK) {
if(res == ESP_FAIL) {
Log.error(88, "Failed to mount or format filesystem");
} else if(res == ESP_ERR_NOT_FOUND) {
Log.error(88, "Failed to find LittleFS partition");
} else {
Log.error(88, "Failed to initialize LittleFS (%s)", esp_err_to_name(res));
}
return;
}
size_t total = 0, used = 0;
res = esp_littlefs_info(conf.partition_label, &total, &used);
if(res != ESP_OK) {
Log.error(88, "Failed to get LittleFS partition information (%s)", esp_err_to_name(res));
} else {
Log.verbose(88, "Partition size: total: %d, used: %d", total, used);
}
// Use POSIX and C standard library functions to work with files.
// First create a file.
Log.verbose(88, "Opening file /lfs/hello.txt");
FILE* f = fopen("/lfs/hello.txt", "w");
if(f == NULL) {
Log.error(88, "Failed to open file for writing");
return;
}
fprintf(f, "LittleFS Rocks!\n");
fclose(f);
Log.verbose(88, "File written");
Log.verbose(88, "LittleFS init OK");
}
/**
* Open a file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable
* @param path path to the file beginning with the driver letter (e.g. S:/folder/file.txt)
* @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_open(lv_fs_drv_t* drv, void* file_p, const char* path, lv_fs_mode_t mode)
{
(void)drv; /*Unused*/
const char* flags = "";
if(mode == LV_FS_MODE_WR)
flags = "w";
else if(mode == LV_FS_MODE_RD)
flags = "r";
else if(mode == (LV_FS_MODE_WR | LV_FS_MODE_RD))
flags = "rb+";
/*Make the path relative to the current directory (the projects root folder)*/
char complete_path[strlen(path) + 1];
complete_path[0] = '/';
complete_path[1] = '\0';
strcat(complete_path, path);
Log.verbose(88, "Opening file %s", path);
lv_spiffs_file_t f = fopen(path, flags);
if(f == NULL) return LV_FS_RES_UNKNOWN;
/*Be sure we are the beginning of the file*/
fseek(f, 0, SEEK_SET);
/* 'file_p' is pointer to a file descriptor and
* we need to store our file descriptor here*/
lv_spiffs_file_t* fp = (lv_spiffs_file_t*)file_p; /*Just avoid the confusing casings*/
*fp = f;
Log.verbose(88, "Open eof file_p %d", feof(*fp));
return LV_FS_RES_OK;
}
/**
* Close an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable. (opened with lv_ufs_open)
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_close(lv_fs_drv_t* drv, void* file_p)
{
(void)drv; /*Unused*/
lv_spiffs_file_t* fp = (lv_spiffs_file_t*)file_p; /*Just avoid the confusing casings*/
fclose(*fp);
return LV_FS_RES_OK;
}
/**
* Read data from an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable.
* @param buf pointer to a memory block where to store the read data
* @param btr number of Bytes To Read
* @param br the real number of read bytes (Byte Read)
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_read(lv_fs_drv_t* drv, void* file_p, void* buf, uint32_t btr, uint32_t* br)
{
(void)drv; /*Unused*/
lv_spiffs_file_t* fp = (lv_spiffs_file_t*)file_p; /*Just avoid the confusing casings*/
Log.verbose(88, "Read eof %d", feof(*fp));
*br = fread(buf, 1, btr, *fp);
return LV_FS_RES_OK;
}
/**
* Write into a file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable
* @param buf pointer to a buffer with the bytes to write
* @param btr Bytes To Write
* @param br the number of real written bytes (Bytes Written). NULL if unused.
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_write(lv_fs_drv_t* drv, void* file_p, const void* buf, uint32_t btw, uint32_t* bw)
{
(void)drv; /*Unused*/
lv_spiffs_file_t* fp = (lv_spiffs_file_t*)file_p; /*Just avoid the confusing casings*/
Log.verbose(88, "Write eof %d", feof(*fp));
*bw = fwrite(buf, 1, btw, *fp);
}
/**
* Set the read write pointer. Also expand the file size if necessary.
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable. (opened with lv_ufs_open )
* @param pos the new position of read write pointer
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_seek(lv_fs_drv_t* drv, void* file_p, uint32_t pos)
{
(void)drv; /*Unused*/
lv_spiffs_file_t* fp = (lv_spiffs_file_t*)file_p; /*Just avoid the confusing casings*/
fseek(*fp, pos, SEEK_SET);
return LV_FS_RES_OK;
}
/**
* Give the size of a file bytes
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable
* @param size pointer to a variable to store the size
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_size(lv_fs_drv_t* drv, void* file_p, uint32_t* size_p)
{
(void)drv; /*Unused*/
lv_spiffs_file_t* fp = (lv_spiffs_file_t*)file_p; /*Just avoid the confusing casings*/
fseek(*fp, 0L, SEEK_END);
*size_p = ftell(*fp);
fseek(*fp, 0L, SEEK_SET);
return LV_FS_RES_OK;
}
/**
* Give the position of the read write pointer
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable.
* @param pos_p pointer to to store the result
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_tell(lv_fs_drv_t* drv, void* file_p, uint32_t* pos_p)
{
(void)drv; /*Unused*/
lv_spiffs_file_t* fp = (lv_spiffs_file_t*)file_p; /*Just avoid the confusing casings*/
*pos_p = ftell(*fp);
return LV_FS_RES_OK;
}
/**
* Delete a file
* @param drv pointer to a driver where this function belongs
* @param path path of the file to delete
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_remove(lv_fs_drv_t* drv, const char* path)
{
(void)drv; /*Unused*/
char filename[32];
snprintf_P(filename, sizeof(filename), PSTR("/%s"), path);
if(!LV_FS_SPIFFS.exists(filename)) {
return LV_FS_RES_NOT_EX;
} else if(LV_FS_SPIFFS.remove(filename)) {
return LV_FS_RES_OK;
} else {
return LV_FS_RES_UNKNOWN;
}
}
/**
* Truncate the file size to the current position of the read write pointer
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to an 'ufs_file_t' variable. (opened with lv_fs_open )
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_trunc(lv_fs_drv_t* drv, void* file_p)
{
return LV_FS_RES_NOT_IMP;
}
/**
* Rename a file
* @param drv pointer to a driver where this function belongs
* @param oldname path to the file
* @param newname path with the new name
* @return LV_FS_RES_OK or any error from 'fs_res_t'
*/
static lv_fs_res_t fs_rename(lv_fs_drv_t* drv, const char* oldname, const char* newname)
{
(void)drv; /*Unused*/
char fromname[32];
char toname[32];
snprintf_P(fromname, sizeof(fromname), PSTR("/%s"), oldname);
snprintf_P(toname, sizeof(toname), PSTR("/%s"), newname);
if(LV_FS_SPIFFS.rename(fromname, toname)) {
return LV_FS_RES_OK;
} else {
return LV_FS_RES_UNKNOWN;
}
}
/**
* Get the free and total size of a driver in kB
* @param drv pointer to a driver where this function belongs
* @param letter the driver letter
* @param total_p pointer to store the total size [kB]
* @param free_p pointer to store the free size [kB]
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_free(lv_fs_drv_t* drv, uint32_t* total_p, uint32_t* free_p)
{
(void)drv; /*Unused*/
#if defined(ARDUINO_ARCH_ESP8266)
FSInfo fs_info;
LV_FS_SPIFFS.info(fs_info);
*total_p = (uint32_t)fs_info.totalBytes;
*free_p = (uint32_t)fs_info.totalBytes - fs_info.usedBytes;
return LV_FS_RES_OK;
#elif defined(ARDUINO_ARCH_ESP32)
*total_p = (uint32_t)LV_FS_SPIFFS.totalBytes();
*free_p = (uint32_t)LV_FS_SPIFFS.totalBytes() - LV_FS_SPIFFS.usedBytes();
return LV_FS_RES_OK;
#endif
return LV_FS_RES_NOT_IMP;
}
/**
* Initialize a 'fs_read_dir_t' variable for directory reading
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to a 'fs_read_dir_t' variable
* @param path path to a directory
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
// static lv_fs_res_t fs_dir_open(lv_fs_drv_t* drv, void* dir_p, const char* path)
// {
// lv_spiffs_dir_t dir;
// #if defined(ARDUINO_ARCH_ESP32)
// dir = &LV_FS_SPIFFS.open(path);
// if(!dir) {
// return LV_FS_RES_UNKNOWN;
// }
// #endif
// #if defined(ARDUINO_ARCH_ESP8266)
// dir = LV_FS_SPIFFS.openDir(path);
// #endif
// lv_spiffs_dir_t* dp = (lv_spiffs_dir_t*)dir_p; /*Just avoid the confusing casings*/
// *dp = dir;
// return LV_FS_RES_OK;
// }
/**
* Read the next filename form a directory.
* The name of the directories will begin with '/'
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to an initialized 'fs_read_dir_t' variable
* @param fn pointer to a buffer to store the filename
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
// static lv_fs_res_t fs_dir_read(lv_fs_drv_t* drv, void* dir_p, char* fn)
// {
// lv_spiffs_dir_t dir = *(lv_spiffs_dir_t*)dir_p; /*Convert type*/
// #if defined(ARDUINO_ARCH_ESP32)
// File file = dir.openNextFile();
// if(file) {
// strcpy(fn, file.name());
// return LV_FS_RES_OK;
// } else {
// return LV_FS_RES_UNKNOWN;
// }
// #endif
// #if defined(ARDUINO_ARCH_ESP8266)
// if(dir.next()) {
// strcpy(fn, dir.fileName().c_str());
// return LV_FS_RES_OK;
// } else {
// return LV_FS_RES_UNKNOWN;
// }
// #endif
// return LV_FS_RES_NOT_IMP;
// }
/**
* Close the directory reading
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to an initialized 'fs_read_dir_t' variable
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_close(lv_fs_drv_t* drv, void* dir_p)
{
return LV_FS_RES_OK;
}
#endif /*LV_USE_FS_IF*/
#endif /*LV_FS_IF_SPIFFS*/
#endif /*ARDUINO*/
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