Hi Kamesh, adapt this... The duration of conversion is aroud 47uS. With 12dB attenuation, you can measure up to 4 volts ( a bit more...) Have fun.... uint16_t data; enum adc1_pad { ADC1_GPIO36 = 0, ADC1_GPIO37, ADC1_GPIO38, ADC1_GPIO39, ADC1_GPIO32, ADC1_GPIO33, ADC1_GPIO34, ADC1_GPIO35 }; enum adc1...