spibus_avr32.h File Reference

AVR32 specific SPI bus declarations. More...

#include <dev/spibus.h>

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Data Structures
struct	_AVR32SPIREG
Typedefs
typedef struct _AVR32SPIREG	AVR32SPIREG
Functions
int	Avr32Spi0ChipSelect (uint_fast8_t cs, uint_fast8_t hi)
	Set the specified chip select to a given level.
void	Avr32SpiBus0Interrupt (void *arg)
int	Avr32Spi1ChipSelect (uint_fast8_t cs, uint_fast8_t hi)
	Set the specified chip select to a given level.
void	Avr32SpiBus1Interrupt (void *arg)
int	Avr32SpiSetup (NUTSPINODE *node)
	Update SPI shadow registers.
int	Avr32SpiBusNodeInit (NUTSPINODE *node)
	Initialize an SPI bus node.
int	Avr32SpiBusTransfer (NUTSPINODE *node, CONST void *txbuf, void *rxbuf, int xlen)
int	Avr32SpiBusDblBufTransfer (NUTSPINODE *node, CONST void *txbuf, void *rxbuf, int xlen)
int	Avr32SpiBusPollTransfer (NUTSPINODE *node, CONST void *txbuf, void *rxbuf, int xlen)
int	Avr32SpiBusWait (NUTSPINODE *node, uint32_t tmo)
	Wait until all SPI bus transfers are done.
Variables
NUTSPIBUS	spiBus0Avr32
	Avr32 SPI bus driver implementation structure.
NUTSPIBUS	spiBus1Avr32
	Avr32 SPI bus driver implementation structure.

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Detailed Description

AVR32 specific SPI bus declarations.

 * $Id: spibus_avr32.h,v 1.1 2009/01/09 17:54:38 haraldkipp Exp $
 * 

Definition in file spibus_avr32.h.

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Typedef Documentation

typedef struct _AVR32SPIREG AVR32SPIREG

Definition at line 48 of file spibus_avr32.h.

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Function Documentation

int Avr32Spi0ChipSelect	(	uint_fast8_t	cs,
		uint_fast8_t	hi
	)

Set the specified chip select to a given level.

Definition at line 212 of file spibus0.c.

References EIO, and errno.

Referenced by Avr32SpiBus0Deselect(), Avr32SpiBus0Select(), and Avr32SpiBusNodeInit().

void Avr32SpiBus0Interrupt

(

void *

arg

)

Definition at line 353 of file spibus0.c.

References AVR32_SPI0_ADDRESS, inr, NutEventPostFromIrq, and outr.

Referenced by Avr32SpiBusNodeInit().

int Avr32Spi1ChipSelect	(	uint_fast8_t	cs,
		uint_fast8_t	hi
	)

Set the specified chip select to a given level.

Definition at line 194 of file spibus1.c.

References EIO, and errno.

Referenced by Avr32SpiBus1Deselect(), Avr32SpiBus1Select(), and Avr32SpiBusNodeInit().

void Avr32SpiBus1Interrupt

(

void *

arg

)

Definition at line 335 of file spibus1.c.

References inr, NutEventPostFromIrq, and outr.

Referenced by Avr32SpiBusNodeInit().

int Avr32SpiSetup

(

NUTSPINODE *

node

)

Update SPI shadow registers.

Parameters:

node	Specifies the SPI bus node.

Returns:

Always 0.

Definition at line 75 of file spibus.c.

References _NUTSPIBUS::bus_base, _AVR32SPIREG::csr, _AVR32SPIREG::mr, _NUTSPINODE::node_bits, _NUTSPINODE::node_bus, _NUTSPINODE::node_mode, _NUTSPINODE::node_rate, _NUTSPINODE::node_stat, NUT_HWCLK_PERIPHERAL_A, NUTASSERT, NutClockGet, SPI_MODE_CPHA, SPI_MODE_CPOL, SPI_MODE_CSKEEP, SPI_MODE_FAULT, SPI_MODE_LOOPBACK, and SPI_MODE_UPDATE.

Referenced by Avr32SpiBus0Select(), Avr32SpiBus1Select(), and Avr32SpiBusNodeInit().

int Avr32SpiBusNodeInit

(

NUTSPINODE *

node

)

Initialize an SPI bus node.

This routine is called for each SPI node, which is registered via NutRegisterSpiDevice().

Parameters:

node	Specifies the SPI bus node.

Returns:

0 on success or -1 if there is no valid chip select.

Definition at line 145 of file spibus.c.

References Avr32Spi0ChipSelect(), Avr32Spi1ChipSelect(), Avr32SpiBus0Interrupt(), Avr32SpiBus1Interrupt(), Avr32SpiSetup(), _NUTSPIBUS::bus_base, _NUTSPIBUS::bus_ready, _NUTSPIBUS::bus_sig, _AVR32SPIREG::csr, malloc(), _AVR32SPIREG::mr, _NUTSPINODE::node_bus, _NUTSPINODE::node_cs, _NUTSPINODE::node_mode, _NUTSPINODE::node_stat, NUTASSERT, NutIrqEnable(), NutRegisterIrqHandler(), outr, and SPI_MODE_CSHIGH.

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int Avr32SpiBusTransfer	(	NUTSPINODE *	node,
		CONST void *	txbuf,
		void *	rxbuf,
		int	xlen
	)

int Avr32SpiBusDblBufTransfer	(	NUTSPINODE *	node,
		CONST void *	txbuf,
		void *	rxbuf,
		int	xlen
	)

int Avr32SpiBusPollTransfer	(	NUTSPINODE *	node,
		CONST void *	txbuf,
		void *	rxbuf,
		int	xlen
	)

int Avr32SpiBusWait	(	NUTSPINODE *	node,
		uint32_t	tmo
	)

Wait until all SPI bus transfers are done.

Parameters:

node	Specifies the SPI bus node.
tmo	Timeout in milliseconds. To disable timeout, set this parameter to NUT_WAIT_INFINITE.

Returns:

Always 0.

Definition at line 294 of file spibus.c.

References _NUTSPIBUS::bus_base, _NUTSPIBUS::bus_ready, inr, _NUTSPINODE::node_bus, and NutEventWait().

Referenced by Avr32SpiBus0Deselect(), and Avr32SpiBus1Deselect().

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Variable Documentation

NUTSPIBUS spiBus0Avr32

Avr32 SPI bus driver implementation structure.

Definition at line 421 of file spibus0.c.

NUTSPIBUS spiBus1Avr32

Avr32 SPI bus driver implementation structure.

Definition at line 403 of file spibus1.c.