#include <stdio.h>
#include "avr_twi.h"

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Macros
#define	TWI_START 0x08

#define	TWI_REP_START 0x10

#define	TWI_ARB_LOST 0x38

#define	TWI_MTX_ADR_ACK 0x18

#define	TWI_MTX_ADR_NACK 0x20

#define	TWI_MTX_DATA_ACK 0x28

#define	TWI_MTX_DATA_NACK 0x30

#define	TWI_MRX_ADR_ACK 0x40

#define	TWI_MRX_ADR_NACK 0x48

#define	TWI_MRX_DATA_ACK 0x50

#define	TWI_MRX_DATA_NACK 0x58

#define	TWI_STX_ADR_ACK 0xA8

#define	TWI_STX_ADR_ACK_M_ARB_LOST 0xB0

#define	TWI_STX_DATA_ACK 0xB8

#define	TWI_STX_DATA_NACK 0xC0

#define	TWI_STX_DATA_ACK_LAST_BYTE 0xC8

#define	TWI_SRX_ADR_ACK 0x60

#define	TWI_SRX_ADR_ACK_M_ARB_LOST 0x68

#define	TWI_SRX_GEN_ACK 0x70

#define	TWI_SRX_GEN_ACK_M_ARB_LOST 0x78

#define	TWI_SRX_ADR_DATA_ACK 0x80

#define	TWI_SRX_ADR_DATA_NACK 0x88

#define	TWI_SRX_GEN_DATA_ACK 0x90

#define	TWI_SRX_GEN_DATA_NACK 0x98

#define	TWI_SRX_STOP_RESTART 0xA0

#define	TWI_NO_STATE 0xF8

#define	TWI_BUS_ERROR 0x00

#define	AVR_TWI_DEBUG 1

Functions
static void	_avr_twi_status_set (avr_twi_t *p, uint8_t v, int interrupt)

static	__attribute__ ((unused))

static avr_cycle_count_t	avr_twi_set_state_timer (struct avr_t avr, avr_cycle_count_t when, void param)

static void	_avr_twi_delay_state (avr_twi_t *p, int twi_cycles, uint8_t state)

static void	avr_twi_write (struct avr_t avr, avr_io_addr_t addr, uint8_t v, void param)

static void	avr_twi_write_data (struct avr_t avr, avr_io_addr_t addr, uint8_t v, void param)

static uint8_t	avr_twi_read_data (struct avr_t avr, avr_io_addr_t addr, void param)

static void	avr_twi_write_status (struct avr_t avr, avr_io_addr_t addr, uint8_t v, void param)

static void	avr_twi_irq_input (struct avr_irq_t irq, uint32_t value, void param)

void	avr_twi_reset (struct avr_io_t *io)

void	avr_twi_init (avr_t avr, avr_twi_t p)

uint32_t	avr_twi_irq_msg (uint8_t msg, uint8_t addr, uint8_t data)
	Create a message value for twi including the 'msg' bitfield, 'addr' and data. More...

Variables
static const char *	irq_names [TWI_IRQ_COUNT]

static avr_io_t	_io

Macro Definition Documentation

#define AVR_TWI_DEBUG 1

#define TWI_ARB_LOST 0x38

#define TWI_BUS_ERROR 0x00

#define TWI_MRX_ADR_ACK 0x40

#define TWI_MRX_ADR_NACK 0x48

#define TWI_MRX_DATA_ACK 0x50

#define TWI_MRX_DATA_NACK 0x58

#define TWI_MTX_ADR_ACK 0x18

#define TWI_MTX_ADR_NACK 0x20

#define TWI_MTX_DATA_ACK 0x28

#define TWI_MTX_DATA_NACK 0x30

#define TWI_NO_STATE 0xF8

#define TWI_REP_START 0x10

#define TWI_SRX_ADR_ACK 0x60

#define TWI_SRX_ADR_ACK_M_ARB_LOST 0x68

#define TWI_SRX_ADR_DATA_ACK 0x80

#define TWI_SRX_ADR_DATA_NACK 0x88

#define TWI_SRX_GEN_ACK 0x70

#define TWI_SRX_GEN_ACK_M_ARB_LOST 0x78

#define TWI_SRX_GEN_DATA_ACK 0x90

#define TWI_SRX_GEN_DATA_NACK 0x98

#define TWI_SRX_STOP_RESTART 0xA0

#define TWI_START 0x08

#define TWI_STX_ADR_ACK 0xA8

#define TWI_STX_ADR_ACK_M_ARB_LOST 0xB0

#define TWI_STX_DATA_ACK 0xB8

#define TWI_STX_DATA_ACK_LAST_BYTE 0xC8

#define TWI_STX_DATA_NACK 0xC0

Function Documentation

static __attribute__ ( (unused) )

static

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static void _avr_twi_delay_state	(	avr_twi_t *	p,
		int	twi_cycles,
		uint8_t	state
	)

static

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static void _avr_twi_status_set	(	avr_twi_t *	p,
		uint8_t	v,
		int	interrupt
	)

inlinestatic

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static void avr_twi_irq_input	(	struct avr_irq_t *	irq,
		uint32_t	value,
		void *	param
	)

static

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static uint8_t avr_twi_read_data	(	struct avr_t *	avr,
		avr_io_addr_t	addr,
		void *	param
	)

static

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void avr_twi_reset ( struct avr_io_t * io )

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static avr_cycle_count_t avr_twi_set_state_timer	(	struct avr_t *	avr,
		avr_cycle_count_t	when,
		void *	param
	)

static

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static void avr_twi_write	(	struct avr_t *	avr,
		avr_io_addr_t	addr,
		uint8_t	v,
		void *	param
	)

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static void avr_twi_write_data	(	struct avr_t *	avr,
		avr_io_addr_t	addr,
		uint8_t	v,
		void *	param
	)

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static void avr_twi_write_status	(	struct avr_t *	avr,
		avr_io_addr_t	addr,
		uint8_t	v,
		void *	param
	)

static

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Variable Documentation

avr_io_t _io

static

Initial value:

= {
  .kind = "twi",
  .reset = avr_twi_reset,
  .irq_names = irq_names,
}

const char* irq_names[TWI_IRQ_COUNT]

static

Initial value:

= {
  [TWI_IRQ_INPUT] = "8<input",
  [TWI_IRQ_OUTPUT] = "32>output",
  [TWI_IRQ_STATUS] = "8>status",
}

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation