Picklock_RCM/source/storage/nx_sd.c

224 lines
3.9 KiB
C
Raw Normal View History

/*
* 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/>.
*/
2020-06-26 22:17:06 +02:00
#include <storage/nx_sd.h>
#include <storage/sdmmc.h>
#include <storage/sdmmc_driver.h>
#include <gfx_utils.h>
#include <libs/fatfs/ff.h>
#include <mem/heap.h>
static bool sd_mounted = false;
2020-06-26 22:17:06 +02:00
static u16 sd_errors[3] = { 0 }; // Init and Read/Write errors.
static u32 sd_mode = SD_UHS_SDR82;
sdmmc_t sd_sdmmc;
sdmmc_storage_t sd_storage;
FATFS sd_fs;
2020-06-26 22:17:06 +02:00
void sd_error_count_increment(u8 type)
{
switch (type)
{
case SD_ERROR_INIT_FAIL:
sd_errors[0]++;
break;
case SD_ERROR_RW_FAIL:
sd_errors[1]++;
break;
case SD_ERROR_RW_RETRY:
sd_errors[2]++;
break;
}
}
u16 *sd_get_error_count()
{
return sd_errors;
}
bool sd_get_card_removed()
{
if (!sdmmc_get_sd_inserted())
return true;
return false;
}
u32 sd_get_mode()
{
return sd_mode;
}
int sd_init_retry(bool power_cycle)
{
u32 bus_width = SDMMC_BUS_WIDTH_4;
u32 type = SDHCI_TIMING_UHS_SDR82;
// Power cycle SD card.
if (power_cycle)
{
sd_mode--;
sdmmc_storage_end(&sd_storage);
}
// Get init parameters.
switch (sd_mode)
{
case SD_INIT_FAIL: // Reset to max.
return 0;
case SD_1BIT_HS25:
bus_width = SDMMC_BUS_WIDTH_1;
type = SDHCI_TIMING_SD_HS25;
break;
case SD_4BIT_HS25:
type = SDHCI_TIMING_SD_HS25;
break;
case SD_UHS_SDR82:
type = SDHCI_TIMING_UHS_SDR82;
break;
default:
sd_mode = SD_UHS_SDR82;
}
return sdmmc_storage_init_sd(&sd_storage, &sd_sdmmc, bus_width, type);
}
bool sd_initialize(bool power_cycle)
{
if (power_cycle)
sdmmc_storage_end(&sd_storage);
int res = !sd_init_retry(false);
while (true)
{
if (!res)
return true;
else if (!sdmmc_get_sd_inserted()) // SD Card is not inserted.
{
sd_mode = SD_UHS_SDR82;
break;
}
else
2020-06-26 22:17:06 +02:00
{
sd_errors[SD_ERROR_INIT_FAIL]++;
if (sd_mode == SD_INIT_FAIL)
break;
else
res = !sd_init_retry(true);
}
}
sdmmc_storage_end(&sd_storage);
return false;
}
bool sd_mount()
{
if (sd_mounted)
return true;
int res = !sd_initialize(false);
if (res)
{
gfx_con.mute = false;
EPRINTF("Failed to init SD card.");
if (!sdmmc_get_sd_inserted())
EPRINTF("Make sure that it is inserted.");
else
EPRINTF("SD Card Reader is not properly seated!");
}
else
{
res = f_mount(&sd_fs, "", 1);
if (res == FR_OK)
{
sd_mounted = true;
return true;
}
else
{
gfx_con.mute = false;
EPRINTFARGS("Failed to mount SD card (FatFS Error %d).\nMake sure that a FAT partition exists..", res);
}
}
return false;
}
2020-06-26 22:17:06 +02:00
static void _sd_deinit()
{
2020-06-26 22:17:06 +02:00
if (sd_mode == SD_INIT_FAIL)
sd_mode = SD_UHS_SDR82;
if (sd_mounted)
{
f_mount(NULL, "", 1);
sdmmc_storage_end(&sd_storage);
sd_mounted = false;
}
}
2020-06-26 22:17:06 +02:00
void sd_unmount() { _sd_deinit(); }
void sd_end() { _sd_deinit(); }
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;
}