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 $
 * 

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Typedef Documentation

typedef struct _AVR32SPIREG AVR32SPIREG

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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.

References EIO, errno, and rc.

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

void Avr32SpiBus0Interrupt

(

void *

arg

)

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.

References EIO, errno, and rc.

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

void Avr32SpiBus1Interrupt

(

void *

arg

)

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.

References _NUTSPIBUS::bus_base, _AVR32SPIREG::csr, _AVR32SPIREG::mr, _NUTSPINODE::node_bits, _NUTSPINODE::node_bus, _NUTSPINODE::node_mode, _NUTSPINODE::node_rate, _NUTSPINODE::node_stat, NULL, 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.

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, NULL, NUTASSERT, NutIrqEnable(), NutRegisterIrqHandler(), outr, rc, 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.

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.

NUTSPIBUS spiBus1Avr32

Avr32 SPI bus driver implementation structure.