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190 lines
6.5 KiB
C
190 lines
6.5 KiB
C
/*
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* File: sd_io.h
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* Author: Nelson Lombardo
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* Year: 2015
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* e-mail: nelson.lombardo@gmail.com
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* License at the end of file.
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*/
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#ifndef _SD_IO_H_
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#define _SD_IO_H_
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/*****************************************************************************/
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/* Configurations */
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/*****************************************************************************/
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//#define _M_IX86 // For use with x86 architecture
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#define SD_IO_WRITE
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//#define SD_IO_WRITE_WAIT_BLOCKER
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#define SD_IO_WRITE_TIMEOUT_WAIT 250
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//#define SD_IO_DBG_COUNT
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/*****************************************************************************/
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#if defined(_M_IX86)
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#include <stdio.h>
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#include "integer.h"
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/* Results of SD functions */
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typedef enum {
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SD_OK = 0, /* 0: Function succeeded */
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SD_NOINIT /* 1: SD not initialized */
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SD_ERROR, /* 2: Disk error */
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SD_PARERR, /* 3: Invalid parameter */
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SD_BUSY, /* 4: Programming busy */
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SD_REJECT /* 5: Reject data */
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} SDRESULTS;
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#ifdef SD_IO_DBG_COUNT
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typedef struct _DBG_COUNT {
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WORD read;
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WORD write;
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} DBG_COUNT;
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#endif
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/* SD device object */
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typedef struct _SD_DEV {
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BOOL mount;
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BYTE cardtype;
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char fn[20]; /* dd if=/dev/zero of=sim_sd.raw bs=1k count=0 seek=8192 */
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FILE *fp;
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DWORD last_sector;
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#ifdef SD_IO_DBG_COUNT
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DBG_COUNT debug;
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#endif
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} SD_DEV;
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#else // For use with uControllers
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#include "sysconfig.h"
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#include "stddef.h"
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#include "spi_io.h" /* Provide the low-level functions */
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/* Definitions of SD commands */
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#define CMD0 (0x40+0) /* GO_IDLE_STATE */
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#define CMD1 (0x40+1) /* SEND_OP_COND (MMC) */
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#define ACMD41 (0xC0+41) /* SEND_OP_COND (SDC) */
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#define CMD8 (0x40+8) /* SEND_IF_COND */
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#define CMD9 (0x40+9) /* SEND_CSD */
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#define CMD16 (0x40+16) /* SET_BLOCKLEN */
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#define CMD17 (0x40+17) /* READ_SINGLE_BLOCK */
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#define CMD24 (0x40+24) /* WRITE_SINGLE_BLOCK */
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#define CMD42 (0x40+42) /* LOCK_UNLOCK */
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#define CMD55 (0x40+55) /* APP_CMD */
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#define CMD58 (0x40+58) /* READ_OCR */
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#define CMD59 (0x40+59) /* CRC_ON_OFF */
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#define SD_INIT_TRYS 0x03
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/* CardType) */
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#define SDCT_MMC 0x01 /* MMC version 3 */
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#define SDCT_SD1 0x02 /* SD version 1 */
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#define SDCT_SD2 0x04 /* SD version 2 */
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#define SDCT_SDC (SDCT_SD1|SDCT_SD2) /* SD */
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#define SDCT_BLOCK 0x08 /* Block addressing */
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#define SD_BLK_SIZE 512
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/* Results of SD functions */
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typedef enum {
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SD_OK = 0, /* 0: Function succeeded */
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SD_NOINIT, /* 1: SD not initialized */
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SD_ERROR, /* 2: Disk error */
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SD_PARERR, /* 3: Invalid parameter */
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SD_BUSY, /* 4: Programming busy */
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SD_REJECT, /* 5: Reject data */
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SD_NORESPONSE /* 6: No response */
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} SDRESULTS;
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#ifdef SD_IO_DBG_COUNT
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typedef struct _DBG_COUNT {
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WORD read;
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WORD write;
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} DBG_COUNT;
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#endif
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/* SD device object */
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typedef struct _SD_DEV {
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BOOL mount;
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BYTE cardtype;
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DWORD last_sector;
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#ifdef SD_IO_DBG_COUNT
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DBG_COUNT debug;
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#endif
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} SD_DEV;
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#endif
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/*******************************************************************************
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* Public Methods - Direct work with SD card *
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******************************************************************************/
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/**
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\brief Initialization the SD card.
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\return If all goes well returns SD_OK.
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*/
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SDRESULTS SD_Init (SD_DEV *dev);
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/**
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\brief Read a single block.
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\param dest Pointer to the destination object to put data
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\param sector Start sector number (internally is converted to byte address).
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\param ofs Byte offset in the sector (0..511).
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\param cnt Byte count (1..512).
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\return If all goes well returns SD_OK.
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*/
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SDRESULTS SD_Read (SD_DEV *dev, void *dat, DWORD sector, WORD ofs, WORD cnt);
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/**
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\brief Write a single block.
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\param dat Data to write.
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\param sector Sector number to write (internally is converted to byte address).
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\return If all goes well returns SD_OK.
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*/
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SDRESULTS SD_Write (SD_DEV *dev, void *dat, DWORD sector);
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/**
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\brief Allows know status of SD card.
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\return If all goes well returns SD_OK.
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*/
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SDRESULTS SD_Status (SD_DEV *dev);
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#endif
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// «sd_io.h» is part of:
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/*----------------------------------------------------------------------------/
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/ ulibSD - Library for SD cards semantics (C)Nelson Lombardo, 2015
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/-----------------------------------------------------------------------------/
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/ ulibSD library is a free software that opened under license policy of
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/ following conditions.
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/
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/ Copyright (C) 2015, ChaN, all right reserved.
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/
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/ 1. Redistributions of source code must retain the above copyright notice,
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/ this condition and the following disclaimer.
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/
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/ This software is provided by the copyright holder and contributors "AS IS"
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/ and any warranties related to this software are DISCLAIMED.
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/ The copyright owner or contributors be NOT LIABLE for any damages caused
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/ by use of this software.
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/----------------------------------------------------------------------------*/
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// Derived from Mister Chan works on FatFs code (http://elm-chan.org/fsw/ff/00index_e.html):
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/*----------------------------------------------------------------------------/
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/ FatFs - FAT file system module R0.11 (C)ChaN, 2015
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/-----------------------------------------------------------------------------/
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/ FatFs module is a free software that opened under license policy of
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/ following conditions.
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/
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/ Copyright (C) 2015, ChaN, all right reserved.
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/
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/ 1. Redistributions of source code must retain the above copyright notice,
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/ this condition and the following disclaimer.
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/
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/ This software is provided by the copyright holder and contributors "AS IS"
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/ and any warranties related to this software are DISCLAIMED.
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/ The copyright owner or contributors be NOT LIABLE for any damages caused
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/ by use of this software.
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/----------------------------------------------------------------------------*/
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