kopia lustrzana https://github.com/micropython/micropython
209 wiersze
5.6 KiB
C
209 wiersze
5.6 KiB
C
/*-----------------------------------------------------------------------*/
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/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2014 */
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/*-----------------------------------------------------------------------*/
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/* If a working storage control module is available, it should be */
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/* attached to the FatFs via a glue function rather than modifying it. */
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/* This is an example of glue functions to attach various exsisting */
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/* storage control modules to the FatFs module with a defined API. */
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/*-----------------------------------------------------------------------*/
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#include <stdint.h>
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#include <stdbool.h>
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#include "py/mpconfig.h"
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#include "diskio.h" /* FatFs lower layer API */
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#include "sflash_diskio.h" /* Serial flash disk IO API */
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#if MICROPY_HW_HAS_SDCARD
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#include "sd_diskio.h" /* SDCARD disk IO API */
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#endif
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#include "modutime.h"
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#include "inc/hw_types.h"
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#include "inc/hw_ints.h"
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#include "inc/hw_memmap.h"
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#include "rom_map.h"
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#include "prcm.h"
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/* Definitions of physical drive number for each drive */
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#define SFLASH 0 /* Map SFLASH drive to drive number 0 */
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#define SDCARD 1 /* Map SD card to drive number 1 */
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/*-----------------------------------------------------------------------*/
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/* Get Drive Status */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_status (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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switch (pdrv) {
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case SFLASH :
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return sflash_disk_status();
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#if MICROPY_HW_HAS_SDCARD
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case SDCARD :
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return sd_disk_status();
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#endif
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default:
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break;
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}
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return STA_NODISK;
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}
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/*-----------------------------------------------------------------------*/
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/* Inidialize a Drive */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_initialize (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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DSTATUS stat = 0;
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switch (pdrv) {
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case SFLASH :
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if (RES_OK != sflash_disk_init()) {
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stat = STA_NOINIT;
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}
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return stat;
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#if MICROPY_HW_HAS_SDCARD
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case SDCARD :
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if (RES_OK != sd_disk_init()) {
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stat = STA_NOINIT;
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}
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return stat;
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#endif
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default:
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break;
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}
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return STA_NOINIT;
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}
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/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_read (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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BYTE *buff, /* Data buffer to store read data */
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DWORD sector, /* Sector address in LBA */
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UINT count /* Number of sectors to read */
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)
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{
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switch (pdrv) {
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case SFLASH :
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return sflash_disk_read(buff, sector, count);
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#if MICROPY_HW_HAS_SDCARD
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case SDCARD :
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return sd_disk_read(buff, sector, count);
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#endif
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default:
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break;
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}
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return RES_PARERR;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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/*-----------------------------------------------------------------------*/
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#if _USE_WRITE
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DRESULT disk_write (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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const BYTE *buff, /* Data to be written */
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DWORD sector, /* Sector address in LBA */
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UINT count /* Number of sectors to write */
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)
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{
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switch (pdrv) {
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case SFLASH :
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return sflash_disk_write(buff, sector, count);
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#if MICROPY_HW_HAS_SDCARD
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case SDCARD :
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return sd_disk_write(buff, sector, count);
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#endif
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default:
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break;
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}
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return RES_PARERR;
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}
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#endif
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/*-----------------------------------------------------------------------*/
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/* Miscellaneous Functions */
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/*-----------------------------------------------------------------------*/
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#if _USE_IOCTL
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DRESULT disk_ioctl (
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BYTE pdrv, /* Physical drive nmuber (0..) */
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BYTE cmd, /* Control code */
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void *buff /* Buffer to send/receive control data */
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)
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{
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switch (pdrv) {
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case SFLASH:
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switch (cmd) {
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case CTRL_SYNC:
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return sflash_disk_flush();
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case GET_SECTOR_COUNT:
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*((DWORD*)buff) = SFLASH_SECTOR_COUNT;
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return RES_OK;
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break;
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case GET_SECTOR_SIZE:
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*((WORD*)buff) = SFLASH_SECTOR_SIZE;
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return RES_OK;
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break;
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case GET_BLOCK_SIZE:
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*((DWORD*)buff) = 1; // high-level sector erase size in units of the block size
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return RES_OK;
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}
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break;
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#if MICROPY_HW_HAS_SDCARD
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case SDCARD:
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switch (cmd) {
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case CTRL_SYNC:
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return RES_OK;
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case GET_SECTOR_COUNT:
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*(WORD*)buff = sd_disk_info.ulNofBlock;
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break;
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case GET_SECTOR_SIZE :
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*(WORD*)buff = SD_SECTOR_SIZE;
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break;
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case GET_BLOCK_SIZE:
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*((DWORD*)buff) = 1; // high-level sector erase size in units of the block size
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return RES_OK;
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}
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break;
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#endif
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}
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return RES_PARERR;
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}
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#endif
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#if !_FS_READONLY && !_FS_NORTC
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DWORD get_fattime (
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void
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)
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{
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mod_struct_time tm;
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uint32_t seconds;
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uint16_t mseconds;
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// Get the time from the on-chip RTC and convert it to struct_time
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MAP_PRCMRTCGet(&seconds, &mseconds);
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mod_time_seconds_since_2000_to_struct_time(seconds, &tm);
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return ((tm.tm_year - 1980) << 25) | ((tm.tm_mon) << 21) |
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((tm.tm_mday) << 16) | ((tm.tm_hour) << 11) |
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((tm.tm_min) << 5) | (tm.tm_sec >> 1);
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}
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#endif
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