Constant esp_idf_hal::sys::adc_atten_t_ADC_ATTEN_DB_2_5

source ยท 
pub const adc_atten_t_ADC_ATTEN_DB_2_5: u32 = 1; // 1u32
Expand description

<The input voltage of ADC will be attenuated extending the range of measurement by about 2.5 dB (1.33 x)