Public function

Functions
void	altitude2_cfg_setup (altitude2_cfg_t *cfg)
	Config Object Initialization function.
err_t	altitude2_init (altitude2_t *ctx, altitude2_cfg_t *cfg)
	Initialization function.
uint8_t	altitude2_read_prom (altitude2_t *ctx, uint8_t select_data, uint16_t *data_out)
	Calibration data read function.
void	altitude2_reset (altitude2_t *ctx)
	Reset function.
uint8_t	altitude2_set_ratio (altitude2_t *ctx, uint8_t temp_ratio, uint8_t press_ratio)
	Set ratio function.
void	altitude2_read_data (altitude2_t *ctx, float *temp_data, float *press_data, float *altitude_data)
	Data read function.

Detailed Description

Function Documentation

altitude2_cfg_setup()

void altitude2_cfg_setup

(

altitude2_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.

altitude2_init()

err_t altitude2_init	(	altitude2_t *	ctx,
		altitude2_cfg_t *	cfg )

Initialization function.

Parameters

altitude2	Click object.
cfg	Click configuration structure.

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

altitude2_read_data()

void altitude2_read_data	(	altitude2_t *	ctx,
		float *	temp_data,
		float *	press_data,
		float *	altitude_data )

Data read function.

Parameters

ctx	Click object.
temp_data	Stores temperature data in celsius.
press_data	Stores pressure data in mbar.
altitude_data	Stores altitude data in meters.

@description This function performs pressure and temperature measurements and calculates temperature data in celsius and pressure data in mbar. Depending on the temperature and pressure data, function calculates altitude in meters.

altitude2_read_prom()

uint8_t altitude2_read_prom	(	altitude2_t *	ctx,
		uint8_t	select_data,
		uint16_t *	data_out )

Calibration data read function.

Parameters

ctx	Click object.
select_data	Select coefficient from 0 to 7.
data_out	Coefficient returned by function.

Returns

0-Ok, 1 - Wrong select_data parameter. @description This function reads calibration data from PROM.

altitude2_reset()

void altitude2_reset

(

altitude2_t *

ctx

)

Reset function.

Parameters

ctx	Click object.

@description This function resets the device and reads calibration coefficients after reset.

altitude2_set_ratio()

uint8_t altitude2_set_ratio	(	altitude2_t *	ctx,
		uint8_t	temp_ratio,
		uint8_t	press_ratio )

Set ratio function.

Parameters

ctx	Click object.
temp_ratio	Determines oversampling ratio for temperature measurement.
press_ratio	Determines oversampling ration for pressure measurement.

Returns

0-Ok, 1 - Wrong temp_ratio parameter, 2 - Wrong press_ratio parameter. @description This function determines oversampling ratio for temperature and pressure measurement.