adc_io_to_channel() function

Get ADC channel from the given GPIO number

Syntax

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Summary

Declaration

Definition

esp_err_t adc_io_to_channel(int io_num, adc_unit_t * const unit_id, adc_channel_t * const channel);

Argument

Description

io_num

GPIO number

unit_id

ADC unit

channel

ADC channel

- ESP_OK: On success - ESP_ERR_INVALID_ARG: Invalid argument - ESP_ERR_NOT_FOUND: The IO is not a valid ADC pad

from examples