sst25vfxxxx.h File Reference

Driver for the SST25Vxxxx flash chips. More...

#include "mcu_periph/spi.h"

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Data Structures
struct	SST25VFxxxx

Macros
#define	SST25VFXXXX_READ   0x03
#define	SST25VFXXXX_HGIH_SPEAD_READ   0x0B
#define	SST25VFXXXX_ERASE_4K   0x20
#define	SST25VFXXXX_ERASE_32K   0x52
#define	SST25VFXXXX_ERASE_64K   0xD8
#define	SST25VFXXXX_ERASE_CHIP   0x60
#define	SST25VFXXXX_BYTE_PROG   0x02
#define	SST25VFXXXX_AAI_PROG   0xAD
#define	SST25VFXXXX_RDSR   0x05
#define	SST25VFXXXX_EWSR   0x50
#define	SST25VFXXXX_WRSR   0x01
#define	SST25VFXXXX_WREN   0x06
#define	SST25VFXXXX_WRDI   0x04
#define	SST25VFXXXX_RDID   0x90
#define	SST25VFXXXX_JEDEC_ID   0x9F
#define	SST25VFXXXX_EBSY   0x70
#define	SST25VFXXXX_DBSY   0x80

Enumerations
enum	SST25VFxxxxStatus {   SST25VFXXXX_UNINIT, SST25VFXXXX_IDLE, SST25VFXXXX_READ_ID, SST25VFXXXX_WRITE_EN,   SST25VFXXXX_CHIP_ERASE, SST25VFXXXX_WRITE_BYTES, SST25VFXXXX_READ_BYTES }

Functions
void	sst25vfxxxx_init (struct SST25VFxxxx *sst, struct spi_periph *spi_p, const uint8_t slave_idx, SPICallback spi_cb)
	Initializing the sst25vfxxxx chip. More...
void	sst25vfxxxx_after_cb (struct SST25VFxxxx *sst)
	Callback of the SPI after going one level higher for gathering the sst pointer. More...
void	sst25vfxxxx_read_id (struct SST25VFxxxx *sst)
	Read the chip identifier. More...
void	sst25vfxxxx_block_write_en (struct SST25VFxxxx *sst)
	Enable block writing. More...
void	sst25vfxxxx_chip_erase (struct SST25VFxxxx *sst)
	Full chip erase. More...
void	sst25vfxxxx_write (struct SST25VFxxxx *sst, uint8_t *transfer_buffer, uint8_t transfer_length)
	Write bytes. More...
void	sst25vfxxxx_read (struct SST25VFxxxx *sst, uint8_t *transfer_buffer, uint8_t transfer_length)
	Read bytes Need 5 more extra bytes because of SPI overhead. More...

Detailed Description

Driver for the SST25Vxxxx flash chips.

Definition in file sst25vfxxxx.h.

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Data Structure Documentation

struct SST25VFxxxx

Definition at line 63 of file sst25vfxxxx.h.

Collaboration diagram for SST25VFxxxx:

Data Fields
uint32_t	flash_addr	The flash address to write at.
uint8_t	input_buf[16]	The input buffer for the SPI transaction.
uint8_t	output_buf[16]	The output buffer for the SPI transaction.
struct spi_periph *	spi_p	The SPI peripheral for the connection.
struct spi_transaction	spi_t	The SPI transaction used for the writing and reading of registers.
enum SST25VFxxxxStatus	status	The status of the SST25VFxxxx flash chip.
uint8_t	status_idx	The counter of substatuses.
uint8_t *	transfer_buf	The transfer buffer.
uint8_t	transfer_idx	The transfer idx is used for counting input/output bytes.
uint8_t	transfer_length	The transfer buffer length.

Macro Definition Documentation

#define SST25VFXXXX_AAI_PROG   0xAD

Definition at line 40 of file sst25vfxxxx.h.

Referenced by sst25vfxxxx_after_cb().

#define SST25VFXXXX_BYTE_PROG   0x02

Definition at line 39 of file sst25vfxxxx.h.

Referenced by sst25vfxxxx_after_cb().

#define SST25VFXXXX_DBSY   0x80

Definition at line 49 of file sst25vfxxxx.h.

#define SST25VFXXXX_EBSY   0x70

Definition at line 48 of file sst25vfxxxx.h.

#define SST25VFXXXX_ERASE_32K   0x52

Definition at line 36 of file sst25vfxxxx.h.

#define SST25VFXXXX_ERASE_4K   0x20

Definition at line 35 of file sst25vfxxxx.h.

#define SST25VFXXXX_ERASE_64K   0xD8

Definition at line 37 of file sst25vfxxxx.h.

#define SST25VFXXXX_ERASE_CHIP   0x60

Definition at line 38 of file sst25vfxxxx.h.

Referenced by sst25vfxxxx_after_cb().

#define SST25VFXXXX_EWSR   0x50

Definition at line 42 of file sst25vfxxxx.h.

Referenced by sst25vfxxxx_block_write_en().

#define SST25VFXXXX_HGIH_SPEAD_READ   0x0B

Definition at line 34 of file sst25vfxxxx.h.

Referenced by sst25vfxxxx_read().

#define SST25VFXXXX_JEDEC_ID   0x9F

Definition at line 47 of file sst25vfxxxx.h.

#define SST25VFXXXX_RDID   0x90

Definition at line 46 of file sst25vfxxxx.h.

Referenced by sst25vfxxxx_read_id().

#define SST25VFXXXX_RDSR   0x05

Definition at line 41 of file sst25vfxxxx.h.

Referenced by sst25vfxxxx_after_cb().

#define SST25VFXXXX_READ   0x03

Definition at line 33 of file sst25vfxxxx.h.

#define SST25VFXXXX_WRDI   0x04

Definition at line 45 of file sst25vfxxxx.h.

Referenced by sst25vfxxxx_after_cb().

#define SST25VFXXXX_WREN   0x06

Definition at line 44 of file sst25vfxxxx.h.

Referenced by sst25vfxxxx_chip_erase(), and sst25vfxxxx_write().

#define SST25VFXXXX_WRSR   0x01

Definition at line 43 of file sst25vfxxxx.h.

Referenced by sst25vfxxxx_after_cb().

Enumeration Type Documentation

enum SST25VFxxxxStatus

Enumerator
SST25VFXXXX_UNINIT	The chip isn't initialized.
SST25VFXXXX_IDLE	The chip is idle and can be used.
SST25VFXXXX_READ_ID	The chip is busy with getting the chip ID.
SST25VFXXXX_WRITE_EN	The chip is busy enabeling writing to blocks.
SST25VFXXXX_CHIP_ERASE	The chip is busy erasing itself.
SST25VFXXXX_WRITE_BYTES	The chip is busy writing bytes.
SST25VFXXXX_READ_BYTES	The chip is busy reading bytes.

Definition at line 52 of file sst25vfxxxx.h.

Function Documentation

void sst25vfxxxx_after_cb

(

struct SST25VFxxxx *

sst

)

Callback of the SPI after going one level higher for gathering the sst pointer.

Definition at line 64 of file sst25vfxxxx.c.

References SST25VFxxxx::flash_addr, SST25VFxxxx::input_buf, spi_transaction::input_buf, spi_transaction::input_length, SST25VFxxxx::output_buf, spi_transaction::output_length, SST25VFxxxx::spi_p, spi_submit(), SST25VFxxxx::spi_t, SST25VFXXXX_AAI_PROG, SST25VFXXXX_BYTE_PROG, SST25VFXXXX_CHIP_ERASE, SST25VFXXXX_ERASE_CHIP, SST25VFXXXX_IDLE, SST25VFXXXX_RDSR, SST25VFXXXX_READ_BYTES, SST25VFXXXX_WRDI, SST25VFXXXX_WRITE_BYTES, SST25VFXXXX_WRITE_EN, SST25VFXXXX_WRSR, SST25VFxxxx::status, SST25VFxxxx::status_idx, SST25VFxxxx::transfer_buf, SST25VFxxxx::transfer_idx, and SST25VFxxxx::transfer_length.

Referenced by direct_memory_spi_cb().

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void sst25vfxxxx_block_write_en

(

struct SST25VFxxxx *

sst

)

Enable block writing.

Definition at line 240 of file sst25vfxxxx.c.

References spi_transaction::input_length, SST25VFxxxx::output_buf, spi_transaction::output_length, SST25VFxxxx::spi_p, spi_submit(), SST25VFxxxx::spi_t, SST25VFXXXX_EWSR, SST25VFXXXX_IDLE, SST25VFXXXX_WRITE_EN, SST25VFxxxx::status, and SST25VFxxxx::status_idx.

Referenced by sst25vfxxxx_init().

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void sst25vfxxxx_chip_erase

(

struct SST25VFxxxx *

sst

)

Full chip erase.

Definition at line 258 of file sst25vfxxxx.c.

References spi_transaction::input_length, SST25VFxxxx::output_buf, spi_transaction::output_length, SST25VFxxxx::spi_p, spi_submit(), SST25VFxxxx::spi_t, SST25VFXXXX_CHIP_ERASE, SST25VFXXXX_IDLE, SST25VFXXXX_WREN, SST25VFxxxx::status, and SST25VFxxxx::status_idx.

Referenced by direct_memory_logger_set().

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void sst25vfxxxx_init	(	struct SST25VFxxxx *	sst,
		struct spi_periph *	spi_p,
		const uint8_t	slave_idx,
		SPICallback	spi_cb
	)

Initializing the sst25vfxxxx chip.

Definition at line 34 of file sst25vfxxxx.c.

References spi_transaction::after_cb, spi_transaction::bitorder, spi_transaction::cdiv, spi_transaction::cpha, spi_transaction::cpol, spi_transaction::dss, SST25VFxxxx::flash_addr, SST25VFxxxx::input_buf, spi_transaction::input_buf, spi_transaction::input_length, SST25VFxxxx::output_buf, spi_transaction::output_buf, spi_transaction::output_length, spi_transaction::select, spi_transaction::slave_idx, SST25VFxxxx::spi_p, SDCard::spi_p, SST25VFxxxx::spi_t, SPICphaEdge1, SPICpolIdleLow, SPIDiv32, SPIDss8bit, SPIMSBFirst, SPISelectUnselect, SPITransDone, sst25vfxxxx_block_write_en(), SST25VFXXXX_IDLE, SST25VFxxxx::status, and spi_transaction::status.

Referenced by direct_memory_logger_init().

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void sst25vfxxxx_read	(	struct SST25VFxxxx *	sst,
		uint8_t *	transfer_buffer,
		uint8_t	transfer_length
	)

Read bytes Need 5 more extra bytes because of SPI overhead.

Definition at line 300 of file sst25vfxxxx.c.

References SST25VFxxxx::flash_addr, spi_transaction::input_buf, spi_transaction::input_length, SST25VFxxxx::output_buf, spi_transaction::output_length, SST25VFxxxx::spi_p, spi_submit(), SST25VFxxxx::spi_t, SST25VFXXXX_HGIH_SPEAD_READ, SST25VFXXXX_IDLE, SST25VFXXXX_READ_BYTES, SST25VFxxxx::status, and SST25VFxxxx::status_idx.

Referenced by direct_memory_logger_periodic(), and direct_memory_logger_set().

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void sst25vfxxxx_read_id

(

struct SST25VFxxxx *

sst

)

Read the chip identifier.

Definition at line 220 of file sst25vfxxxx.c.

References spi_transaction::input_length, SST25VFxxxx::output_buf, spi_transaction::output_length, SST25VFxxxx::spi_p, spi_submit(), SST25VFxxxx::spi_t, SST25VFXXXX_IDLE, SST25VFXXXX_RDID, SST25VFXXXX_READ_ID, and SST25VFxxxx::status.

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void sst25vfxxxx_write	(	struct SST25VFxxxx *	sst,
		uint8_t *	transfer_buffer,
		uint8_t	transfer_length
	)

Write bytes.

Definition at line 276 of file sst25vfxxxx.c.

References spi_transaction::input_length, SST25VFxxxx::output_buf, spi_transaction::output_length, SST25VFxxxx::spi_p, spi_submit(), SST25VFxxxx::spi_t, SST25VFXXXX_IDLE, SST25VFXXXX_WREN, SST25VFXXXX_WRITE_BYTES, SST25VFxxxx::status, SST25VFxxxx::status_idx, SST25VFxxxx::transfer_buf, SST25VFxxxx::transfer_idx, and SST25VFxxxx::transfer_length.

Referenced by direct_memory_logger_periodic(), and direct_memory_logger_set().

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