Public function

Functions
void	wheatstone_cfg_setup (wheatstone_cfg_t *cfg)
	Config Object Initialization function.
err_t	wheatstone_init (wheatstone_t *ctx, wheatstone_cfg_t *cfg)
	Initialization function.
void	wheatstone_set_potentiometer (wheatstone_t *ctx, uint8_t pot_value)
	Set potentiometer ( 0 - 100k )
err_t	wheatstone_read_an_pin_value (wheatstone_t *ctx, uint16_t *data_out)
	Wheatstone read AN pin value function.
err_t	wheatstone_read_an_pin_voltage (wheatstone_t *ctx, float *data_out)
	Wheatstone read AN pin voltage level function.

Detailed Description

Function Documentation

wheatstone_cfg_setup()

void wheatstone_cfg_setup

(

wheatstone_cfg_t *

cfg

)

Config Object Initialization function.

Parameters

cfg	Click configuration structure.

This function initializes click configuration structure to init state.

Note

All used pins will be set to unconnected state.

wheatstone_init()

err_t wheatstone_init	(	wheatstone_t *	ctx,
		wheatstone_cfg_t *	cfg )

Initialization function.

Parameters

ctx	Click object.
cfg	Click configuration structure.

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

wheatstone_read_an_pin_value()

err_t wheatstone_read_an_pin_value	(	wheatstone_t *	ctx,
		uint16_t *	data_out )

Wheatstone read AN pin value function.

This function reads results of AD conversion of the AN pin.

Parameters

[in]	ctx	: Click context object. See wheatstone_t object definition for detailed explanation.
[out]	data_out	: Output ADC result.

Returns

• 0 - Success,
• -1 - Error. See #err_t definition for detailed explanation.

Note

None.

wheatstone_read_an_pin_voltage()

err_t wheatstone_read_an_pin_voltage	(	wheatstone_t *	ctx,
		float *	data_out )

Wheatstone read AN pin voltage level function.

This function reads results of AD conversion of the AN pin and converts them to proportional voltage level.

Parameters

[in]	ctx	: Click context object. See wheatstone_t object definition for detailed explanation.
[out]	data_out	: Output voltage level of the analog pin [V].

Returns

• 0 - Success,
• -1 - Error. See #err_t definition for detailed explanation.

Note

The conversion to voltage depends on the entered configuration of the ADC (resolution, reference voltage).

wheatstone_set_potentiometer()

void wheatstone_set_potentiometer	(	wheatstone_t *	ctx,
		uint8_t	pot_value )

Set potentiometer ( 0 - 100k )

Parameters

ctx	Click object.
pot_value	Value ( 0x00 - 0xFF )

This function set 8-bit wiper positions data via SPI on the TPL0501 chip register.