HostIF (Host Interface) driver

Classes
struct	hostif_buff_s
	Common buffer configuration. More...
struct	hostif_i2cconf_s
	I2C buffer configuration. More...
struct	hostif_spiconf_s
	SPI buffer configuration. More...

Macros
#define	MAX_BUFFER_NUM   32
	Host interface maximum number of buffers.
#define	HOSTIF_BUFF_ATTR_ADDR_OFFSET(n)   (((n) & 0x3) << 4)
	Host interface buffer attributes. More...
#define	HOSTIF_BUFF_ATTR_FIXLEN   (0 << 2)
#define	HOSTIF_BUFF_ATTR_VARLEN   (1 << 2)
#define	HOSTIF_BUFF_ATTR_WRITE   (0 << 1)
#define	HOSTIF_BUFF_ATTR_READ   (1 << 1)
#define	EXTERN   extern "C"

Functions
int	hostif_i2cinitialize (struct hostif_i2cconf_s *config)
int	hostif_spiinitialize (struct hostif_spiconf_s *config)
int	hostif_uninitialize (void)

Detailed Description

Macro Definition Documentation

HOSTIF_BUFF_ATTR_ADDR_OFFSET

#define HOSTIF_BUFF_ATTR_ADDR_OFFSET

(

n

)

(((n) & 0x3) << 4)

Host interface buffer attributes.

2 to the power of n

HOSTIF_BUFF_ATTR_FIXLEN

#define HOSTIF_BUFF_ATTR_FIXLEN   (0 << 2)

fixed length

HOSTIF_BUFF_ATTR_VARLEN

#define HOSTIF_BUFF_ATTR_VARLEN   (1 << 2)

variable length

HOSTIF_BUFF_ATTR_WRITE

#define HOSTIF_BUFF_ATTR_WRITE   (0 << 1)

from target to host

HOSTIF_BUFF_ATTR_READ

#define HOSTIF_BUFF_ATTR_READ   (1 << 1)

from host to target

Function Documentation

hostif_i2cinitialize()

int hostif_i2cinitialize

(

struct hostif_i2cconf_s *

config

)

Initialize the host interface for I2C slave

Parameters

[in]

config

- pointer to I2C buffer configuration

Returns

Return 0 on success. Otherwise, return a negated errno.

hostif_spiinitialize()

int hostif_spiinitialize

(

struct hostif_spiconf_s *

config

)

Initialize the host interface for SPI slave

Parameters

[in]

config

- pointer to SPI buffer configuration

Returns

Return 0 on success. Otherwise, return a negated errno.

hostif_uninitialize()

int hostif_uninitialize

(

void

)

Uninitialize the host interface

Returns

Return 0 on success. Otherwise, return a negated errno.