Public function

Functions
void	rs4855_cfg_setup (rs4855_cfg_t *cfg)
	Config Object Initialization function.
RS4855_RETVAL	rs4855_init (rs4855_t *ctx, rs4855_cfg_t *cfg)
	Initialization function.
void	rs4855_generic_write (rs4855_t *ctx, char *data_buf, uint16_t len)
	Generic write function.
int32_t	rs4855_generic_read (rs4855_t *ctx, char *data_buf, uint16_t max_len)
	Generic read function.
void	rs4855_set_de_state (rs4855_t *ctx, uint8_t state)
	Sets DE pin to high or low state.
void	rs4855_set_re_state (rs4855_t *ctx, uint8_t state)
	Sets RE pin to high or low state.

Detailed Description

Function Documentation

rs4855_cfg_setup()

void rs4855_cfg_setup

(

rs4855_cfg_t *

cfg

)

Config Object Initialization function.

Parameters

cfg	Click configuration structure.

@description This function initializes click configuration structure to init state.

Note

All used pins will be set to unconnected state.

rs4855_generic_read()

int32_t rs4855_generic_read	(	rs4855_t *	ctx,
		char *	data_buf,
		uint16_t	max_len )

Generic read function.

Parameters

ctx	Click object.
data_buf	Data buffer for read data.
max_len	The maximum length of data that can be read.

Returns

Number of reads data.

rs4855_generic_write()

void rs4855_generic_write	(	rs4855_t *	ctx,
		char *	data_buf,
		uint16_t	len )

Generic write function.

Parameters

ctx	Click object.
data_buf	Data buffer for sends.
len	Number of bytes for sends.

rs4855_init()

RS4855_RETVAL rs4855_init	(	rs4855_t *	ctx,
		rs4855_cfg_t *	cfg )

Initialization function.

Parameters

ctx	Click object.
cfg	Click configuration structure.

@description This function initializes all necessary pins and peripherals used for this click.

rs4855_set_de_state()

void rs4855_set_de_state	(	rs4855_t *	ctx,
		uint8_t	state )

Sets DE pin to high or low state.

Parameters

ctx	Click object.
state	pin state

rs4855_set_re_state()

void rs4855_set_re_state	(	rs4855_t *	ctx,
		uint8_t	state )

Sets RE pin to high or low state.

Parameters

ctx	Click object.
state	pin state