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/*-----------------------------------------------------------------------*/
/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2014 */
/*-----------------------------------------------------------------------*/
/* If a working storage control module is available, it should be */
/* attached to the FatFs via a glue function rather than modifying it. */
/* This is an example of glue functions to attach various exsisting */
/* storage control modules to the FatFs module with a defined API. */
/*-----------------------------------------------------------------------*/
#include <stdint.h>
#include <stdbool.h>
#include "py/mpconfig.h"
#include "py/runtime.h"
#include "py/obj.h"
#include "diskio.h" /* FatFs lower layer API */
#include "sflash_diskio.h" /* Serial flash disk IO API */
#include "sd_diskio.h" /* SDCARD disk IO API */
#include "inc/hw_types.h"
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "rom_map.h"
#include "prcm.h"
#include "pybrtc.h"
#include "timeutils.h"
#include "ff.h"
#include "pybsd.h"
#include "moduos.h"
/*-----------------------------------------------------------------------*/
/* Get Drive Status */
/*-----------------------------------------------------------------------*/
DSTATUS disk_status (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
if (pdrv == FLASH) {
return sflash_disk_status();
} else {
os_fs_mount_t *mount_obj;
if ((mount_obj = osmount_find_by_volume(pdrv))) {
if (mount_obj->writeblocks[0] == MP_OBJ_NULL) {
return STA_PROTECT;
}
return 0;
}
}
return STA_NODISK;
}
/*-----------------------------------------------------------------------*/
/* Inidialize a Drive */
/*-----------------------------------------------------------------------*/
DSTATUS disk_initialize (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
if (pdrv == FLASH) {
if (RES_OK != sflash_disk_init()) {
return STA_NOINIT;
}
} else {
os_fs_mount_t *mount_obj;
if ((mount_obj = osmount_find_by_volume(pdrv))) {
if (mount_obj->writeblocks[0] == MP_OBJ_NULL) {
return STA_PROTECT;
}
return 0;
}
}
return STA_NODISK;
}
/*-----------------------------------------------------------------------*/
/* Read Sector(s) */
/*-----------------------------------------------------------------------*/
DRESULT disk_read (
BYTE pdrv, /* Physical drive nmuber to identify the drive */
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Sector address in LBA */
UINT count /* Number of sectors to read */
)
{
if (pdrv == FLASH) {
return sflash_disk_read(buff, sector, count);
} else {
os_fs_mount_t *mount_obj;
if ((mount_obj = osmount_find_by_volume(pdrv))) {
// optimization for the built-in sd card device
if (mount_obj->device == (mp_obj_t)&pybsd_obj) {
return sd_disk_read(buff, sector, count);
}
mount_obj->readblocks[2] = MP_OBJ_NEW_SMALL_INT(sector);
mount_obj->readblocks[3] = mp_obj_new_bytearray_by_ref(count * 512, buff);
return mp_obj_get_int(mp_call_method_n_kw(2, 0, mount_obj->readblocks));
}
// nothing mounted
return RES_ERROR;
}
return RES_PARERR;
}
/*-----------------------------------------------------------------------*/
/* Write Sector(s) */
/*-----------------------------------------------------------------------*/
#if _USE_WRITE
DRESULT disk_write (
BYTE pdrv, /* Physical drive nmuber to identify the drive */
const BYTE *buff, /* Data to be written */
DWORD sector, /* Sector address in LBA */
UINT count /* Number of sectors to write */
)
{
if (pdrv == FLASH) {
return sflash_disk_write(buff, sector, count);
} else {
os_fs_mount_t *mount_obj;
if ((mount_obj = osmount_find_by_volume(pdrv))) {
// optimization for the built-in sd card device
if (mount_obj->device == (mp_obj_t)&pybsd_obj) {
return sd_disk_write(buff, sector, count);
}
mount_obj->writeblocks[2] = MP_OBJ_NEW_SMALL_INT(sector);
mount_obj->writeblocks[3] = mp_obj_new_bytearray_by_ref(count * 512, (void *)buff);
return mp_obj_get_int(mp_call_method_n_kw(2, 0, mount_obj->writeblocks));
}
// nothing mounted
return RES_ERROR;
}
return RES_PARERR;
}
#endif
/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions */
/*-----------------------------------------------------------------------*/
#if _USE_IOCTL
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
if (pdrv == FLASH) {
switch (cmd) {
case CTRL_SYNC:
return sflash_disk_flush();
case GET_SECTOR_COUNT:
*((DWORD*)buff) = SFLASH_SECTOR_COUNT;
return RES_OK;
case GET_SECTOR_SIZE:
*((DWORD*)buff) = SFLASH_SECTOR_SIZE;
return RES_OK;
case GET_BLOCK_SIZE:
*((DWORD*)buff) = 1; // high-level sector erase size in units of the block size
return RES_OK;
}
} else {
os_fs_mount_t *mount_obj;
if ((mount_obj = osmount_find_by_volume(pdrv))) {
switch (cmd) {
case CTRL_SYNC:
if (mount_obj->sync[0] != MP_OBJ_NULL) {
mp_call_method_n_kw(0, 0, mount_obj->sync);
}
return RES_OK;
case GET_SECTOR_COUNT:
// optimization for the built-in sd card device
if (mount_obj->device == (mp_obj_t)&pybsd_obj) {
*((DWORD*)buff) = sd_disk_info.ulNofBlock * (sd_disk_info.ulBlockSize / 512);
} else {
*((DWORD*)buff) = mp_obj_get_int(mp_call_method_n_kw(0, 0, mount_obj->count));
}
return RES_OK;
case GET_SECTOR_SIZE:
*((DWORD*)buff) = SD_SECTOR_SIZE; // Sector size is fixed to 512 bytes, as with SD cards
return RES_OK;
case GET_BLOCK_SIZE:
*((DWORD*)buff) = 1; // high-level sector erase size in units of the block size
return RES_OK;
}
}
// nothing mounted
return RES_ERROR;
}
return RES_PARERR;
}
#endif
#if !_FS_READONLY && !_FS_NORTC
DWORD get_fattime (
void
)
{
timeutils_struct_time_t tm;
timeutils_seconds_since_2000_to_struct_time(pyb_rtc_get_seconds(), &tm);
return ((tm.tm_year - 1980) << 25) | ((tm.tm_mon) << 21) |
((tm.tm_mday) << 16) | ((tm.tm_hour) << 11) |
((tm.tm_min) << 5) | (tm.tm_sec >> 1);
}
#endif
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