#ifndef __I2C_H
  #define __I2C_H
  
  uint32_t rtlsdr_get_tuner_clock(void *dev);
  int rtlsdr_i2c_write_fn(void *dev, uint8_t addr, uint8_t *buf, int len);
  int rtlsdr_i2c_read_fn(void *dev, uint8_t addr, uint8_t *buf, int len);
  
  #endif