sc16is752_context Struct Reference

SC16IS752 device context. More...

#include <sc16is752.h>

Data Fields
rtems_termios_device_context	base
int(*	write_reg )(sc16is752_context *ctx, uint8_t addr, const uint8_t *data, size_t len)
	Writes a register.
int(*	read_reg )(sc16is752_context *ctx, uint8_t addr, uint8_t *data, size_t len)
	Reads a register.
int(*	read_2_reg )(sc16is752_context *ctx, uint8_t addr_0, uint8_t addr_1, uint8_t data[2])
	Reads two registers.
bool(*	first_open )(sc16is752_context *ctx)
	First open.
void(*	last_close )(sc16is752_context *ctx)
	Last close.
bool(*	install_irq )(sc16is752_context *ctx)
	Shall install the interrupt handler.
void(*	remove_irq )(sc16is752_context *ctx)
	Shall remove the interrupt handler.
sc16is752_mode	mode
	Device mode.
uint32_t	input_frequency
	Input frequency in Hertz (dependent on crystal, see XTAL1 and XTAL2 pins).
rtems_termios_tty *	tty
	Corresponding Termios structure.
uint8_t	ier
	Shadow Interrupt Enable Register (IER).
uint8_t	tx_in_progress
	Characters placed into transmit FIFO.
uint8_t	tx_fifo_free
	Count of free characters in the transmit FIFO.
uint8_t	lcr
	Shadow Line Control Register (LCR).
uint8_t	efcr
	Shadow Extra Features Control Register (EFCR).

Detailed Description

SC16IS752 device context.

Field Documentation

efcr

uint8_t sc16is752_context::efcr

Shadow Extra Features Control Register (EFCR).

Internal variable.

first_open

bool(* sc16is752_context::first_open) (sc16is752_context *ctx)

First open.

Internal handler.

ier

uint8_t sc16is752_context::ier

Shadow Interrupt Enable Register (IER).

Internal variable.

input_frequency

uint32_t sc16is752_context::input_frequency

Input frequency in Hertz (dependent on crystal, see XTAL1 and XTAL2 pins).

Must be initialized by the user before the device creation.

install_irq

bool(* sc16is752_context::install_irq) (sc16is752_context *ctx)

Shall install the interrupt handler.

Must be initialized by the user before the device creation.

last_close

void(* sc16is752_context::last_close) (sc16is752_context *ctx)

Last close.

Internal handler.

lcr

uint8_t sc16is752_context::lcr

Shadow Line Control Register (LCR).

Internal variable.

mode

sc16is752_mode sc16is752_context::mode

Device mode.

Must be initialized by the user before the device creation.

read_2_reg

int(* sc16is752_context::read_2_reg) (sc16is752_context *ctx, uint8_t addr_0, uint8_t addr_1, uint8_t data[2])

Reads two registers.

Internal handler.

read_reg

int(* sc16is752_context::read_reg) (sc16is752_context *ctx, uint8_t addr, uint8_t *data, size_t len)

Reads a register.

Internal handler.

remove_irq

void(* sc16is752_context::remove_irq) (sc16is752_context *ctx)

Shall remove the interrupt handler.

Must be initialized by the user before the device creation.

tty

rtems_termios_tty* sc16is752_context::tty

Corresponding Termios structure.

Internal variable.

tx_fifo_free

uint8_t sc16is752_context::tx_fifo_free

Count of free characters in the transmit FIFO.

Internal variable.

tx_in_progress

uint8_t sc16is752_context::tx_in_progress

Characters placed into transmit FIFO.

Internal variable.

write_reg

int(* sc16is752_context::write_reg) (sc16is752_context *ctx, uint8_t addr, const uint8_t *data, size_t len)

Writes a register.

Internal handler.

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The documentation for this struct was generated from the following file:

• cpukit/include/dev/serial/sc16is752.h