#include "hardware/i2c.h"
#include "pico/stdlib.h"
#include <cstdio>

void check_i2c() {
  uint8_t buffer;
  for (int addr{0x08}; addr < 0x78; addr++) {
    if (i2c_read_blocking(i2c0, addr, &buffer, 1, false) > 0) {
      printf("Adresse: %02X\n", addr);
    }
  }
}

int main() {
  sleep_ms(3000);
  stdio_init_all();
  i2c_init(i2c0, 400 * 1000);
  gpio_set_function(0, GPIO_FUNC_I2C); // SDA
  gpio_set_function(1, GPIO_FUNC_I2C); // SCL
  gpio_pull_up(0);
  gpio_pull_up(1);
  while (true) {
    check_i2c();
  }
}