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hekate/nyx/nyx_gui/storage/nx_sd.c

126 lines
2.4 KiB
C

/*
* Copyright (c) 2018 naehrwert
* Copyright (c) 2018-2019 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "nx_sd.h"
#include "sdmmc.h"
#include "sdmmc_driver.h"
#include "../gfx/gfx.h"
#include "../libs/fatfs/ff.h"
#include "../mem/heap.h"
static bool sd_mounted = false;
static bool sd_init_done = false;
bool sd_get_card_removed()
{
if (sd_init_done && !sdmmc_get_sd_inserted())
return true;
return false;
}
bool sd_mount()
{
if (sd_mounted)
return true;
int res = 0;
if (!sd_init_done)
{
res = !sdmmc_storage_init_sd(&sd_storage, &sd_sdmmc, SDMMC_BUS_WIDTH_4, SDHCI_TIMING_UHS_SDR82);
if (!res)
sd_init_done = true;
}
if (res)
{
EPRINTF("Failed to init SD card.\nMake sure that it is inserted.\nOr that SD reader is properly seated!");
}
else
{
int res = f_mount(&sd_fs, "", 1);
if (res == FR_OK)
{
sd_mounted = true;
return true;
}
else
{
EPRINTFARGS("Failed to mount SD card (FatFS Error %d).\nMake sure that a FAT partition exists..", res);
}
}
return false;
}
void sd_unmount(bool deinit)
{
if (sd_init_done && sd_mounted)
{
f_mount(NULL, "", 1);
sd_mounted = false;
}
if (sd_init_done && deinit)
{
sdmmc_storage_end(&sd_storage);
sd_init_done = false;
}
}
void *sd_file_read(const char *path, u32 *fsize)
{
FIL fp;
if (f_open(&fp, path, FA_READ) != FR_OK)
return NULL;
u32 size = f_size(&fp);
if (fsize)
*fsize = size;
void *buf = malloc(size);
if (f_read(&fp, buf, size, NULL) != FR_OK)
{
free(buf);
f_close(&fp);
return NULL;
}
f_close(&fp);
return buf;
}
int sd_save_to_file(void *buf, u32 size, const char *filename)
{
FIL fp;
u32 res = 0;
res = f_open(&fp, filename, FA_CREATE_ALWAYS | FA_WRITE);
if (res)
{
EPRINTFARGS("Error (%d) creating file\n%s.\n", res, filename);
return res;
}
f_write(&fp, buf, size, NULL);
f_close(&fp);
return 0;
}