sdcard.h File Reference

    SD Card interface definitions

More...

#include "mspi.h"
#include <stdio.h>

Go to the source code of this file.

Macros
#define	MICRO_SD_CS   5
Interface return codes
#define	SDCARD_SUCCESS   0
	Successfully completed operation.
#define	SDCARD_REJECTED   2
	Indicates the host cannot handle this card, maybe due to rejected voltage range.
#define	SDCARD_CMD_TIMEOUT   4
	Timeout while trying to send command.
#define	SDCARD_CMD_ERROR   3
	Card sent an error response.
#define	SDCARD_DATA_TIMEOUT   6
	Card did not send a data start byte to indicate beginning of a data block.
#define	SDCARD_DATA_ERROR   7
	Card returned error when trying to read or write data. More...
#define	SDCARD_BUSY_TIMEOUT   8
	Busy waiting timed out (card held down data line too long)
#define	SDCARD_CSD_ERROR   10
	Failed reading CSD register.

Functions
uint8_t	sdcard_init (void)
	Initializes the SD Card. More...
uint8_t	sdcard_read_csd (uint8_t *buffer)
	This function will read the CSD (16 Bytes) of the SD-Card. More...
uint16_t	sdcard_get_block_size ()
	Returns the size of one block in bytes. More...
uint8_t	sdcard_is_SDSC ()
	This function indicates if a card is a SDSC or SDHC/SDXC card. More...
uint8_t	sdcard_set_CRC (uint8_t enable)
	Turns crc capabilities of the card on or off. More...
uint64_t	sdcard_get_card_size ()
	Returns card size. More...
uint32_t	sdcard_get_block_num ()
uint8_t	sdcard_erase_blocks (uint32_t startaddr, uint32_t endaddr)
uint8_t	sdcard_read_block (uint32_t addr, uint8_t *buffer)
	This function will read one block (512, 1024, 2048 or 4096Byte) of the SD-Card. More...
uint8_t	sdcard_write_block (uint32_t addr, uint8_t *buffer)
	This function will write one block (512, 1024, 2048 or 4096Byte) of the SD-Card. More...
uint8_t	sdcard_write_multi_block_start (uint32_t addr, uint32_t num_blocks)
	Prepares to write multiple blocks sequentially. More...
uint8_t	sdcard_write_multi_block_next (uint8_t *buffer)
	Writes single of multiple sequental blocks. More...
uint8_t	sdcard_write_multi_block_stop ()
	Stops multiple block write. More...
uint8_t	sdcard_write_cmd (uint8_t cmd, uint32_t *arg, uint8_t *resp)
	This function sends a command via SPI to the SD-Card. More...
uint16_t	sdcard_data_crc (uint8_t *data)
	This function calculates the CRC16 for a 512 Byte data block. More...

Detailed Description

    SD Card interface definitions

Author

Ulf Kulau kulau.nosp@m.@ibr.nosp@m..cs.t.nosp@m.u-bs.nosp@m..de Christoph Peltz peltz.nosp@m.@ibr.nosp@m..cs.t.nosp@m.u-bs.nosp@m..de Enrico Joerns joern.nosp@m.s@ib.nosp@m.r.cs..nosp@m.tu-b.nosp@m.s.de

Definition in file sdcard.h.