circuitpython/stmhal/diskio.c

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* Original template for this file comes from:
* Low level disk I/O module skeleton for FatFs, (C)ChaN, 2013
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdint.h>
#include <stdio.h>
#include STM32_HAL_H
#include "py/runtime.h"
#include "lib/fatfs/ff.h" /* FatFs lower layer API */
#include "lib/fatfs/diskio.h" /* FatFs lower layer API */
#include "rtc.h"
#include "storage.h"
#include "sdcard.h"
#include "extmod/fsusermount.h"
const PARTITION VolToPart[] = {
{0, 1}, // Logical drive 0 ==> Physical drive 0, 1st partition
{1, 0}, // Logical drive 1 ==> Physical drive 1 (auto detection)
{2, 0}, // Logical drive 2 ==> Physical drive 2 (auto detection)
/*
{0, 2}, // Logical drive 2 ==> Physical drive 0, 2nd partition
{0, 3}, // Logical drive 3 ==> Physical drive 0, 3rd partition
*/
};
/*-----------------------------------------------------------------------*/
/* Initialize a Drive */
/*-----------------------------------------------------------------------*/
DSTATUS disk_initialize (
BYTE pdrv /* Physical drive nmuber (0..) */
)
{
switch (pdrv) {
case PD_FLASH:
storage_init();
return 0;
#if MICROPY_HW_HAS_SDCARD
case PD_SDCARD:
if (!sdcard_power_on()) {
return STA_NODISK;
}
// TODO return STA_PROTECT if SD card is read only
return 0;
#endif
case PD_USER:
if (MP_STATE_PORT(fs_user_mount) == NULL) {
return STA_NODISK;
}
if (MP_STATE_PORT(fs_user_mount)->writeblocks[0] == MP_OBJ_NULL) {
return STA_PROTECT;
}
return 0;
}
return STA_NOINIT;
}
/*-----------------------------------------------------------------------*/
/* Get Disk Status */
/*-----------------------------------------------------------------------*/
DSTATUS disk_status (
BYTE pdrv /* Physical drive nmuber (0..) */
)
{
switch (pdrv) {
case PD_FLASH :
// flash is ready
return 0;
#if MICROPY_HW_HAS_SDCARD
case PD_SDCARD:
// TODO return STA_PROTECT if SD card is read only
return 0;
#endif
case PD_USER:
if (MP_STATE_PORT(fs_user_mount) == NULL) {
return STA_NODISK;
}
if (MP_STATE_PORT(fs_user_mount)->writeblocks[0] == MP_OBJ_NULL) {
return STA_PROTECT;
}
return 0;
}
return STA_NOINIT;
}
/*-----------------------------------------------------------------------*/
/* Read Sector(s) */
/*-----------------------------------------------------------------------*/
DRESULT disk_read (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Sector address (LBA) */
UINT count /* Number of sectors to read (1..128) */
)
{
switch (pdrv) {
case PD_FLASH:
for (int i = 0; i < count; i++) {
if (!storage_read_block(buff + i * FLASH_BLOCK_SIZE, sector + i)) {
return RES_ERROR;
}
}
return RES_OK;
#if MICROPY_HW_HAS_SDCARD
case PD_SDCARD:
if (sdcard_read_blocks(buff, sector, count) != 0) {
return RES_ERROR;
}
return RES_OK;
#endif
case PD_USER:
if (MP_STATE_PORT(fs_user_mount) == NULL) {
// nothing mounted
return RES_ERROR;
}
MP_STATE_PORT(fs_user_mount)->readblocks[2] = MP_OBJ_NEW_SMALL_INT(sector);
MP_STATE_PORT(fs_user_mount)->readblocks[3] = mp_obj_new_bytearray_by_ref(count * 512, buff);
mp_call_method_n_kw(2, 0, MP_STATE_PORT(fs_user_mount)->readblocks);
return RES_OK;
}
return RES_PARERR;
}
/*-----------------------------------------------------------------------*/
/* Write Sector(s) */
/*-----------------------------------------------------------------------*/
#if _USE_WRITE
DRESULT disk_write (
BYTE pdrv, /* Physical drive nmuber (0..) */
const BYTE *buff, /* Data to be written */
DWORD sector, /* Sector address (LBA) */
UINT count /* Number of sectors to write (1..128) */
)
{
switch (pdrv) {
case PD_FLASH:
for (int i = 0; i < count; i++) {
if (!storage_write_block(buff + i * FLASH_BLOCK_SIZE, sector + i)) {
return RES_ERROR;
}
}
return RES_OK;
#if MICROPY_HW_HAS_SDCARD
case PD_SDCARD:
if (sdcard_write_blocks(buff, sector, count) != 0) {
return RES_ERROR;
}
return RES_OK;
#endif
case PD_USER:
if (MP_STATE_PORT(fs_user_mount) == NULL) {
// nothing mounted
return RES_ERROR;
}
if (MP_STATE_PORT(fs_user_mount)->writeblocks[0] == MP_OBJ_NULL) {
// read-only block device
return RES_ERROR;
}
MP_STATE_PORT(fs_user_mount)->writeblocks[2] = MP_OBJ_NEW_SMALL_INT(sector);
MP_STATE_PORT(fs_user_mount)->writeblocks[3] = mp_obj_new_bytearray_by_ref(count * 512, (void*)buff);
mp_call_method_n_kw(2, 0, MP_STATE_PORT(fs_user_mount)->writeblocks);
return RES_OK;
}
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 */
)
{
switch (pdrv) {
case PD_FLASH:
switch (cmd) {
case CTRL_SYNC:
storage_flush();
return RES_OK;
case GET_BLOCK_SIZE:
*((DWORD*)buff) = 1; // high-level sector erase size in units of the small (512) block size
return RES_OK;
}
break;
#if MICROPY_HW_HAS_SDCARD
case PD_SDCARD:
switch (cmd) {
case CTRL_SYNC:
return RES_OK;
case GET_BLOCK_SIZE:
*((DWORD*)buff) = 1; // high-level sector erase size in units of the small (512) block size
return RES_OK;
}
break;
#endif
case PD_USER:
if (MP_STATE_PORT(fs_user_mount) == NULL) {
// nothing mounted
return RES_ERROR;
}
switch (cmd) {
case CTRL_SYNC:
if (MP_STATE_PORT(fs_user_mount)->sync[0] != MP_OBJ_NULL) {
mp_call_method_n_kw(0, 0, MP_STATE_PORT(fs_user_mount)->sync);
}
return RES_OK;
case GET_BLOCK_SIZE:
*((DWORD*)buff) = 1; // high-level sector erase size in units of the small (512) bl
return RES_OK;
case GET_SECTOR_COUNT: {
mp_obj_t ret = mp_call_method_n_kw(0, 0, MP_STATE_PORT(fs_user_mount)->count);
*((DWORD*)buff) = mp_obj_get_int(ret);
return RES_OK;
}
}
break;
}
return RES_PARERR;
}
#endif
DWORD get_fattime (
void
)
{
rtc_init_finalise();
RTC_TimeTypeDef time;
RTC_DateTypeDef date;
HAL_RTC_GetTime(&RTCHandle, &time, FORMAT_BIN);
HAL_RTC_GetDate(&RTCHandle, &date, FORMAT_BIN);
return ((2000 + date.Year - 1980) << 25) | ((date.Month) << 21) | ((date.Date) << 16) | ((time.Hours) << 11) | ((time.Minutes) << 5) | (time.Seconds / 2);
}