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

#define adc 2
#define pin (26 + adc)


int main() {
  stdio_init_all();
  adc_init();
  adc_gpio_init(pin);
  uint adc_valor;

  while (true) {
    adc_select_input(adc);
    adc_valor = adc_read();
    
    float tensao_v = (3.3*adc_valor)/4095;

    printf("Tensão: %.3f v\n ", tensao_v);
    sleep_ms(500);
  }
}