#include <stdio.h>
#include "pico/stdlib.h"
#include "hardware/adc.h"

int main() {
  stdio_init_all();

  adc_init();
  adc_gpio_init(26);    // enable ADC on GPIO26
  adc_select_input(0);

  while (true) {
    uint16_t value = adc_read();
    printf("ADC value: %d\n", value);

    sleep_ms(1000);
  }
}