2.6.2.1 Struct adc_config
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.
| Type | Name | Description |
|---|---|---|
| enum adc_accumulate_samples | accumulate_samples |
Number of ADC samples to accumulate when using the ADC_RESOLUTION_CUSTOM mode |
| enum adc_clock_prescaler | clock_prescaler |
Clock prescaler |
| enum gclk_generator | clock_source |
GCLK generator used to clock the peripheral |
| struct adc_correction_config | correction |
Gain and offset correction configuration structure |
| bool | differential_mode |
Enables differential mode if true |
| enum adc_divide_result | divide_result |
Division ration when using the ADC_RESOLUTION_CUSTOM mode |
| enum adc_event_action | event_action |
Event action to take on incoming event |
| bool | freerunning |
Enables free running mode if true |
| bool | left_adjust |
Left adjusted result |
| enum adc_negative_input | negative_input |
Negative MUX input |
| bool | on_demand |
ADC On demand control |
| enum adc_positive_input | positive_input |
Positive MUX input |
| uint32_t | 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. |
| enum adc_reference | reference |
Voltage reference |
| bool | 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. |
| enum adc_resolution | resolution |
Result resolution |
| bool | run_in_standby |
ADC run in standby control |
| 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. Sampling time is set according to the formula: Sample time = (sample_length+1) * (ADCclk / 2). |
| bool | sampling_time_compensation_enable |
Enables sampling period offset compensation if true |
| struct adc_window_config | window |
Window monitor configuration structure |