adc_config Struct Reference

ADC configuration structure.

Configuration structure for an ADC instance. This structure should be initialized by the adc_get_config_defaults() function before being modified by the user application.

#include <adc_feature.h>

Data Fields
enum adc_accumulate_samples	accumulate_samples
	Number of ADC samples to accumulate when using the ADC_RESOLUTION_CUSTOM mode. More...
enum adc_clock_prescaler	clock_prescaler
	Clock prescaler. More...
enum gclk_generator	clock_source
	GCLK generator used to clock the peripheral. More...
struct adc_correction_config	correction
	Gain and offset correction configuration structure. More...
bool	differential_mode
	Enables differential mode if true. More...
enum adc_divide_result	divide_result
	Division ration when using the ADC_RESOLUTION_CUSTOM mode. More...
enum adc_event_action	event_action
	Event action to take on incoming event. More...
bool	freerunning
	Enables free running mode if true. More...
bool	left_adjust
	Left adjusted result. More...
enum adc_negative_input	negative_input
	Negative MUX input. More...
bool	on_demand
	ADC On demand control. More...
enum adc_positive_input	positive_input
	Positive MUX input. More...
uint32_t	positive_input_sequence_mask_enable
	Positive input enabled mask for conversion sequence. More...
enum adc_reference	reference
	Voltage reference. More...
bool	reference_compensation_enable
	Enables reference buffer offset compensation if true. More...
enum adc_resolution	resolution
	Result resolution. More...
bool	run_in_standby
	ADC run in standby control. More...
uint8_t	sample_length
	This value (0-63) control the ADC sampling time in number of half ADC prescaled clock cycles (depends of ADC_PRESCALER value), thus controlling the ADC input impedance. More...
bool	sampling_time_compensation_enable
	Enables sampling period offset compensation if true. More...
struct adc_window_config	window
	Window monitor configuration structure. More...

enum adc_accumulate_samples adc_config::accumulate_samples

Number of ADC samples to accumulate when using the ADC_RESOLUTION_CUSTOM mode.

Referenced by _adc_set_config(), adc_get_config_defaults(), and adc_setup().

enum adc_clock_prescaler adc_config::clock_prescaler

Clock prescaler.

Referenced by _adc_set_config(), adc_get_config_defaults(), adc_setup(), and setup_adc_window_mode_test().

enum gclk_generator adc_config::clock_source

GCLK generator used to clock the peripheral.

Referenced by _adc_set_config(), adc_get_config_defaults(), adc_setup(), run_adc_init_test(), setup_adc_average_mode_test(), and setup_adc_window_mode_test().

struct adc_correction_config adc_config::correction

Gain and offset correction configuration structure.

Referenced by _adc_set_config(), and adc_get_config_defaults().

bool adc_config::differential_mode

Enables differential mode if true.

Referenced by _adc_set_config(), and adc_get_config_defaults().

enum adc_divide_result adc_config::divide_result

Division ration when using the ADC_RESOLUTION_CUSTOM mode.

Referenced by _adc_set_config(), adc_get_config_defaults(), and adc_setup().

enum adc_event_action adc_config::event_action

Event action to take on incoming event.

Referenced by _adc_set_config(), adc_get_config_defaults(), adc_init(), and adc_setup().

bool adc_config::freerunning

Enables free running mode if true.

Referenced by _adc_set_config(), adc_get_config_defaults(), adc_init(), and setup_adc_window_mode_test().

bool adc_config::left_adjust

Left adjusted result.

Referenced by _adc_set_config(), and adc_get_config_defaults().

enum adc_negative_input adc_config::negative_input

Negative MUX input.

Referenced by _adc_set_config(), adc_get_config_defaults(), run_adc_init_test(), setup_adc_average_mode_test(), and setup_adc_window_mode_test().

bool adc_config::on_demand

ADC On demand control.

Referenced by _adc_set_config(), adc_get_config_defaults(), and adc_setup().

enum adc_positive_input adc_config::positive_input

Positive MUX input.

Referenced by _adc_set_config(), adc_get_config_defaults(), adc_setup(), run_adc_init_test(), setup_adc_average_mode_test(), and setup_adc_window_mode_test().

uint32_t adc_config::positive_input_sequence_mask_enable

Positive input enabled mask for conversion sequence.

The sequence start from the lowest input, and go to the next enabled input automatically when the conversion is done. If no bits are set the sequence is disabled.

Referenced by _adc_set_config(), and adc_get_config_defaults().

enum adc_reference adc_config::reference

Voltage reference.

Referenced by _adc_set_config(), adc_get_config_defaults(), adc_init(), adc_setup(), run_adc_init_test(), setup_adc_average_mode_test(), and setup_adc_window_mode_test().

bool adc_config::reference_compensation_enable

Enables reference buffer offset compensation if true.

This will increase the accuracy of the gain stage, but decreases the input impedance; therefore the startup time of the reference must be increased.

Referenced by _adc_set_config(), and adc_get_config_defaults().

enum adc_resolution adc_config::resolution

Result resolution.

Referenced by _adc_set_config(), adc_get_config_defaults(), adc_setup(), and setup_adc_window_mode_test().

bool adc_config::run_in_standby

ADC run in standby control.

Referenced by _adc_set_config(), adc_get_config_defaults(), and adc_setup().

uint8_t adc_config::sample_length

This value (0-63) control the ADC sampling time in number of half ADC prescaled clock cycles (depends of ADC_PRESCALER value), thus controlling the ADC input impedance.

Sampling time is set according to the formula: Sample time = (sample_length+1) * (ADCclk / 2).

Referenced by _adc_set_config(), and adc_get_config_defaults().

bool adc_config::sampling_time_compensation_enable

Enables sampling period offset compensation if true.

Referenced by _adc_set_config(), and adc_get_config_defaults().

struct adc_window_config adc_config::window

Window monitor configuration structure.

Referenced by _adc_set_config(), adc_get_config_defaults(), adc_setup(), and setup_adc_window_mode_test().