Data Structures
struct	_AT45D_DCB
Defines
#define	SPI_RATE_AT45D0 33000000
#define	SPI_MODE_AT45D0 SPI_MODE_3
#define	SPI_RATE_AT45D1 33000000
#define	SPI_MODE_AT45D1 SPI_MODE_3
#define	SPI_RATE_AT45D2 33000000
#define	SPI_MODE_AT45D2 SPI_MODE_3
#define	SPI_RATE_AT45D3 33000000
#define	SPI_MODE_AT45D3 SPI_MODE_3
Typedefs
typedef struct _AT45D_DCB	AT45D_DCB
Functions
int	At45dNodeLock (NUTSPINODE *node)
void	At45dNodeUnlock (NUTSPINODE *node)
int	At45dNodeTransfer (NUTSPINODE node, uint8_t op, uint32_t parm, uint_fast8_t oplen, CONST void txbuf, void *rxbuf, int xlen)
	Execute DataFlash command with data transfer.
int	At45dNodeCommand (NUTSPINODE *node, uint8_t op, uint32_t parm, uint_fast8_t oplen)
	Execute DataFlash command without data.
uint8_t	At45dNodeStatus (NUTSPINODE *node)
	Query the status of the serial flash.
int	At45dNodeWaitReady (NUTSPINODE *node, uint32_t tmo, int poll)
	Wait until DataFlash memory cycle finished.
AT45D_INFO *	At45dNodeProbe (NUTSPINODE *node)
	Determine the DataFlash type.
Variables
NUTSPINODE	nodeAt45d0
	First AT45D DataFlash SPI node implementation structure.
NUTSPINODE	nodeAt45d1
	Second AT45D DataFlash SPI node implementation structure.
NUTSPINODE	nodeAt45d2
	Third AT45D DataFlash SPI node implementation structure.
NUTSPINODE	nodeAt45d3
	Forth AT45D DataFlash SPI node implementation structure.

Define Documentation

#define SPI_RATE_AT45D0 33000000

Definition at line 267 of file spi_node_at45d.c.

#define SPI_MODE_AT45D0 SPI_MODE_3

Definition at line 275 of file spi_node_at45d.c.

#define SPI_RATE_AT45D1 33000000

Definition at line 308 of file spi_node_at45d.c.

#define SPI_MODE_AT45D1 SPI_MODE_3

Definition at line 316 of file spi_node_at45d.c.

#define SPI_RATE_AT45D2 33000000

Definition at line 346 of file spi_node_at45d.c.

#define SPI_MODE_AT45D2 SPI_MODE_3

Definition at line 354 of file spi_node_at45d.c.

#define SPI_RATE_AT45D3 33000000

Definition at line 384 of file spi_node_at45d.c.

#define SPI_MODE_AT45D3 SPI_MODE_3

Definition at line 392 of file spi_node_at45d.c.

Typedef Documentation

typedef struct _AT45D_DCB AT45D_DCB

Function Documentation

int At45dNodeLock ( NUTSPINODE * node )

Definition at line 80 of file spi_node_at45d.c.

References _AT45D_DCB::dcb_lock, _NUTSPINODE::node_dcb, NUT_WAIT_INFINITE, and NutEventWait().

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void At45dNodeUnlock ( NUTSPINODE * node )

Definition at line 87 of file spi_node_at45d.c.

References _AT45D_DCB::dcb_lock, _NUTSPINODE::node_dcb, and NutEventPost().

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int At45dNodeTransfer	(	NUTSPINODE *	node,
		uint8_t	op,
		uint32_t	parm,
		uint_fast8_t	oplen,
		CONST void *	txbuf,
		void *	rxbuf,
		int	xlen
	)

Execute DataFlash command with data transfer.

Parameters:

node	Specifies the SPI node.
op	Command code.
parm	Command parameter.
oplen	Command length.
txbuf	Pointer to the transmit data buffer, may be set to NULL.
rxbuf	Pointer to the receive data buffer, may be set to NULL.
xlen	Number of byte to receive and/or transmit.

Returns:: 0 on success, -1 on errors.

Definition at line 132 of file spi_node_at45d.c.

References _NUTSPIBUS::bus_alloc, _NUTSPIBUS::bus_release, _NUTSPIBUS::bus_transfer, _NUTSPINODE::node_bus, and NUTASSERT.

Referenced by At45dNodeCommand().

int At45dNodeCommand	(	NUTSPINODE *	node,
		uint8_t	op,
		uint32_t	parm,
		uint_fast8_t	oplen
	)

Execute DataFlash command without data.

Parameters:

node	Specifies the SPI node.
op	Command operation code.
parm	Optional command parameter.
oplen	Command length.

Returns:: 0 on success, -1 on errors.

Definition at line 167 of file spi_node_at45d.c.

References At45dNodeTransfer().

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uint8_t At45dNodeStatus ( NUTSPINODE * node )

Query the status of the serial flash.

Parameters:

node	Specifies the SPI node.

Returns:: 0 on success or -1 in case of an error.

Definition at line 179 of file spi_node_at45d.c.

References _NUTSPIBUS::bus_alloc, _NUTSPIBUS::bus_release, _NUTSPIBUS::bus_transfer, _NUTSPIBUS::bus_wait, DFCMD_READ_STATUS, _NUTSPINODE::node_bus, NUT_WAIT_INFINITE, and NUTASSERT.

Referenced by At45dNodeProbe(), and At45dNodeWaitReady().

int At45dNodeWaitReady	(	NUTSPINODE *	node,
		uint32_t	tmo,
		int	poll
	)

Wait until DataFlash memory cycle finished.

Parameters:

node	Specifies the SPI node.
tmo	Number of loops (or milliseconds) to wait at max.
poll	If 0, the current thread will be suspended for 1 millisecond between each retry. Otherwise the polling loop will not sleep, but may be still suspended by the lower level SPI bus driver.

Returns:: 0 on success or -1 in case of an error.

Definition at line 219 of file spi_node_at45d.c.

References At45dNodeStatus(), and NutSleep().

Referenced by At45dNodeProbe().

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AT45D_INFO* At45dNodeProbe ( NUTSPINODE * node )

Determine the DataFlash type.

If the board contains a known DataFlash chip, but couldn't be determined by this routine, then most probably the chip select configuration is wrong.

Parameters:

node	Specifies the SPI node.

Returns:: Pointer to a AT45D_INFO structure, which contains the relevant DataFlash parameters. If no known DataFlash is available, then NULL is returned.

Definition at line 247 of file spi_node_at45d.c.

References at45d_info, at45d_known_types, AT45D_STATUS_DENSITY, AT45D_STATUS_PAGE_SIZE, At45dNodeStatus(), and At45dNodeWaitReady().

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Variable Documentation

NUTSPINODE nodeAt45d0

Initial value:

 {
    NULL,                       
    NULL,                       
    SPI_RATE_AT45D0,            
    SPI_MODE_AT45D0,            
    8,                          
    0,                          
    &dcbAt45d0                  
}

First AT45D DataFlash SPI node implementation structure.

Definition at line 297 of file spi_node_at45d.c.

NUTSPINODE nodeAt45d1

Initial value:

 {
    NULL,                       
    NULL,                       
    SPI_RATE_AT45D1,            
    SPI_MODE_AT45D1,            
    8,                          
    0,                          
    &dcbAt45d1                  
}

Second AT45D DataFlash SPI node implementation structure.

Definition at line 335 of file spi_node_at45d.c.

NUTSPINODE nodeAt45d2

Initial value:

 {
    NULL,                       
    NULL,                       
    SPI_RATE_AT45D2,            
    SPI_MODE_AT45D2,            
    8,                          
    0,                          
    &dcbAt45d2                  
}

Third AT45D DataFlash SPI node implementation structure.

Definition at line 373 of file spi_node_at45d.c.

NUTSPINODE nodeAt45d3

Initial value:

 {
    NULL,                       
    NULL,                       
    SPI_RATE_AT45D3,            
    SPI_MODE_AT45D3,            
    8,                          
    0,                          
    &dcbAt45d3                  
}

Forth AT45D DataFlash SPI node implementation structure.

Definition at line 411 of file spi_node_at45d.c.

Data Structures

Defines

Typedefs

Functions

Variables

Define Documentation

Typedef Documentation

Function Documentation

Variable Documentation