typedef struct {
  unsigned int channel;
  unsigned int gain; // x1000
} measurement_input;

#define ADC_STORE_BUFFER_SIZE 100 // in number of samples / nb of inputs

adc_continuous_handle_t init_measurement_inputs(measurement_input inputs[], int inputs_num);
void init_conv_driver(measurement_input inputs[], int inputs_num, adc_cali_handle_t* out);
void start_zero_cali(adc_continuous_handle_t handle, unsigned int nb_samples, measurement_input inputs[], int nb_inputs, uint32_t offsets[]);