include/regs/xmega_spi.h File Reference

ATxmega SPI registers. More...

#include <io.h>

Go to the source code of this file.

Defines
Register Offset
#define	SPI_CTRL   0
	Control Register.
#define	SPI_INTCTRL   1
	Interrupt Control Register.
#define	SPI_STATUS   2
	Status Register.
#define	SPI_DATA   3
	Data Register.
#define	SPI_CTRL_PRESCALER_START   0
	Clock Prescaler.
#define	SPI_CTRL_PRESCALER_SIZE   2
	Clock Prescaler.
#define	SPI_CTRL_MODE_START   2
	Mode.
#define	SPI_CTRL_MODE_SIZE   2
	Mode.
#define	SPI_CTRL_MASTER_BIT   4
	Master/Slave Select.
#define	SPI_CTRL_DORD_BIT   5
	Data Order.
#define	SPI_CTRL_ENABLE_BIT   6
	Enable.
#define	SPI_CTRL_CLK2X_BIT   7
	Clock Double.
#define	SPI_INTCTRL_INTLVL_START   0
	Interrupt Level.
#define	SPI_INTCTRL_INTLVL_SIZE   2
	Interrupt Level.
#define	SPI_STATUS_WRCOL_BIT   6
	Write Collision Flag.
#define	SPI_STATUS_IF_BIT   7
	Interrupt Flag.
Bit manipulation macros
#define	SPI_BIT(name)   (1 << SPI_##name##_BIT)
	Create a mask with bit name set.
#define	SPI_BF(name, value)
	Create a mask with bitfield name set to value.
#define	SPI_BFEXT(name, value)
	Extract the value of bitfield name from regval.
#define	SPI_BFINS(name, value, old)
	Return regval with bitfield name set to value.
Register access macros
#define	spi_write_reg(spi, reg, value)   mmio_write8((void *)((uintptr_t)(spi) + SPI_##reg), value)
	Write value to SPI register reg.
#define	spi_read_reg(spi, reg)   mmio_read8((void *)((uintptr_t)(spi) + SPI_##reg))
	Read the value of SPI register reg.

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Detailed Description

ATxmega SPI registers.

Copyright (C) 2009 Atmel Corporation. All rights reserved.

Definition in file xmega_spi.h.