Public function

Functions
void	capextend_cfg_setup (capextend_cfg_t *cfg)
	Config Object Initialization function.
CAPEXTEND_RETVAL	capextend_init (capextend_t *ctx, capextend_cfg_t *cfg)
	Initialization function.
void	capextend_generic_write (capextend_t *ctx, uint8_t reg, uint8_t *data_buf, uint8_t len)
	Generic write function.
void	capextend_generic_read (capextend_t *ctx, uint8_t reg, uint8_t *data_buf, uint8_t len)
	Generic read function.
int8_t	capextend_read_msb_buttons (capextend_t *ctx)
	Read MSB buttons function.
int8_t	capextend_read_lsb_buttons (capextend_t *ctx)
	Read LSB buttons function.
uint16_t	capextend_read_buttons (capextend_t *ctx)
	Read buttons function.
void	capextend_reset (capextend_t *ctx)
	Reset function.
void	capextend_set_rst_high (capextend_t *ctx)
	Set reset high function.
void	capextend_set_rst_low (capextend_t *ctx)
	Set reset low function.
uint8_t	capextend_get_int_input (capextend_t *ctx)
	Get interrupt input function.

Detailed Description

Function Documentation

capextend_cfg_setup()

void capextend_cfg_setup

(

capextend_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.

capextend_generic_read()

void capextend_generic_read	(	capextend_t *	ctx,
		uint8_t	reg,
		uint8_t *	data_buf,
		uint8_t	len )

Generic read function.

Parameters

ctx	Click object.
reg	Register address.
data_buf	Output data buf
len	Number of the bytes to be read

@description This function reads data from the desired register.

capextend_generic_write()

void capextend_generic_write	(	capextend_t *	ctx,
		uint8_t	reg,
		uint8_t *	data_buf,
		uint8_t	len )

Generic write function.

Parameters

ctx	Click object.
reg	Register address.
data_buf	Data buf to be written.
len	Number of the bytes in data buf.

@description This function writes data to the desired register.

capextend_get_int_input()

uint8_t capextend_get_int_input

(

capextend_t *

ctx

)

Get interrupt input function.

Parameters

ctx	Click object.

@description This function reads the input voltage on the interrupt pin.

capextend_init()

CAPEXTEND_RETVAL capextend_init	(	capextend_t *	ctx,
		capextend_cfg_t *	cfg )

Initialization function.

Parameters

capextend	Click object.
cfg	Click configuration structure.

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

capextend_read_buttons()

uint16_t capextend_read_buttons

(

capextend_t *

ctx

)

Read buttons function.

Parameters

ctx	Click object.

Return values

Returns

12bit data of buttons state.

@description This function reads the button map data.

capextend_read_lsb_buttons()

int8_t capextend_read_lsb_buttons

(

capextend_t *

ctx

)

Read LSB buttons function.

Parameters

ctx	Click object.

@description This function reads the LSB button map data.

capextend_read_msb_buttons()

int8_t capextend_read_msb_buttons

(

capextend_t *

ctx

)

Read MSB buttons function.

Parameters

ctx	Click object.

@description This function reads the MSB button map data.

capextend_reset()

void capextend_reset

(

capextend_t *

ctx

)

Reset function.

Parameters

ctx	Click object.

@description This function does a software reset of the click module.

capextend_set_rst_high()

void capextend_set_rst_high

(

capextend_t *

ctx

)

Set reset high function.

Parameters

ctx	Click object.

@description This function sets the output voltage on the reset pin to high.

capextend_set_rst_low()

void capextend_set_rst_low

(

capextend_t *

ctx

)

Set reset low function.

Parameters

ctx	Click object.

@description This function sets the output voltage on the reset pin to low.