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driver(adc): esp32s2 support API adc2_vref_to_gpio

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fuzhibo
2020-06-03 17:38:10 +08:00
parent 934fe37c48
commit 885f8ce484
9 changed files with 180 additions and 78 deletions
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34
components/driver/include/driver/adc_common.h
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@@ -312,6 +312,40 @@ esp_err_t adc2_config_channel_atten(adc2_channel_t channel, adc_atten_t atten);
*/
esp_err_t adc2_get_raw(adc2_channel_t channel, adc_bits_width_t width_bit, int *raw_out);
/**
* @brief Output ADC1 or ADC2's reference voltage to ``adc2_channe_t``'s IO.
*
* This function routes the internal reference voltage of ADCn to one of
* ADC2's channels. This reference voltage can then be manually measured
* for calibration purposes.
*
* @note ESP32 only supports output of ADC2's internal reference voltage.
* @param[in] adc_unit ADC unit index
* @param[in] gpio GPIO number (Only ADC2's channels IO are supported)
*
* @return
* - ESP_OK: v_ref successfully routed to selected GPIO
* - ESP_ERR_INVALID_ARG: Unsupported GPIO
*/
esp_err_t adc_vref_to_gpio(adc_unit_t adc_unit, gpio_num_t gpio);
/**
* @brief Output ADC2 reference voltage to ``adc2_channe_t``'s IO.
*
* This function routes the internal reference voltage of ADCn to one of
* ADC2's channels. This reference voltage can then be manually measured
* for calibration purposes.
*
* @deprecated Use ``adc_vref_to_gpio`` instead.
*
* @param[in] gpio GPIO number (ADC2's channels are supported)
*
* @return
* - ESP_OK: v_ref successfully routed to selected GPIO
* - ESP_ERR_INVALID_ARG: Unsupported GPIO
*/
esp_err_t adc2_vref_to_gpio(gpio_num_t gpio) __attribute__((deprecated));
#ifdef __cplusplus
}
#endif