i2c.h File Reference

PIO I2C program interface. More...

Detailed Description

PIO I2C program interface.

Author

Fabian Hüßler fabia.nosp@m.n.hu.nosp@m.essle.nosp@m.r@ov.nosp@m.gu.de

Definition in file i2c.h.

#include "periph/i2c.h"
#include "periph/pio.h"
#include "mutex.h"

Include dependency graph for i2c.h:

Go to the source code of this file.

Data Structures
struct	pio_program_i2c
	PIO I2C program type. More...
struct	pio_i2c_bus
	PIO I2C emulated bus type. More...

Typedefs
typedef i2c_t	pio_i2c_t
	PIO I2C descriptor type compatible with i2c_t.
typedef struct pio_program_i2c	pio_program_i2c_t
	PIO I2C program type.
typedef struct pio_i2c_bus	pio_i2c_bus_t
	PIO I2C emulated bus type.

Functions
pio_i2c_bus_t *	pio_i2c_get (pio_i2c_t id)
	Get access to a PIO I2C instance configured with PIO_I2C_CONFIG.
unsigned	pio_i2c_numof (void)
	Query the number of PIO I2C instances configured with PIO_I2C_CONFIG.
const pio_program_i2c_t *	pio_i2c_get_program (pio_t pio)
	Get const I2C program reference.
int	pio_i2c_init_program (pio_t pio)
	Create, allocate, and write a PIO I2C program.
void	pio_i2c_deinit_program (pio_t pio)
	Free a PIO I2C program.
pio_sm_t	pio_i2c_sm_lock (pio_t pio, pio_i2c_bus_t *i2c)
	Acquire a PIO state machine of PIO pio to run the PIO I2C program.
void	pio_i2c_sm_unlock (pio_i2c_bus_t *i2c)
	Release a PIO state machine of PIO pio.
void	pio_i2c_start_programs (void)
	Start PIO I2C programs configured with PIO_I2C_CONFIG.
void	pio_i2c_stop_programs (void)
	Stop PIO I2C programs configured with PIO_I2C_CONFIG.
int	pio_i2c_write_program (pio_t pio, pio_program_i2c_t *pro)
	Write a PIO I2C program to instruction memory.
int	pio_i2c_init (pio_i2c_bus_t *bus, const pio_program_i2c_t *pro, gpio_t sda, gpio_t scl, unsigned irq)
	Setup a state machine to run the I2C program.
void	pio_i2c_acquire (pio_i2c_bus_t *bus)
	Get exclusive access to the emulated I2C bus.
void	pio_i2c_release (pio_i2c_bus_t *bus)
	Release emulated I2C bus.
int	pio_i2c_read_regs (pio_t pio, pio_sm_t sm, uint16_t addr, uint16_t reg, void *data, size_t len, uint8_t flags)
	Emulate i2c_read_regs.
static int	pio_i2c_read_reg (pio_t pio, pio_sm_t sm, uint16_t addr, uint16_t reg, void *data, uint8_t flags)
	Emulate i2c_read_reg.
int	pio_i2c_read_bytes (pio_t pio, pio_sm_t sm, uint16_t addr, void *data, size_t len, uint8_t flags)
	Emulate i2c_read_bytes.
static int	pio_i2c_read_byte (pio_t pio, pio_sm_t sm, uint16_t addr, void *data, uint8_t flags)
	Emulate i2c_read_byte.
int	pio_i2c_write_bytes (pio_t pio, pio_sm_t sm, uint16_t addr, const void *data, size_t len, uint8_t flags)
	Emulate i2c_write_bytes.
static int	pio_i2c_write_byte (pio_t pio, pio_sm_t sm, uint16_t addr, uint8_t data, uint8_t flags)
	Emulate i2c_write_byte.
int	pio_i2c_write_regs (pio_t pio, pio_sm_t sm, uint16_t addr, uint16_t reg, const void *data, size_t len, uint8_t flags)
	Emulate i2c_write_regs.
static int	pio_i2c_write_reg (pio_t pio, pio_sm_t sm, uint16_t addr, uint16_t reg, uint8_t data, uint8_t flags)
	Emulate i2c_write_reg.