diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/rtl-sdr.h | 30 | ||||
| -rw-r--r-- | include/rtlsdr_i2c.h | 7 |
2 files changed, 33 insertions, 4 deletions
diff --git a/include/rtl-sdr.h b/include/rtl-sdr.h index 8a6dd38..e5b3f75 100644 --- a/include/rtl-sdr.h +++ b/include/rtl-sdr.h @@ -39,6 +39,36 @@ RTLSDR_API int rtlsdr_close(rtlsdr_dev_t *dev); /* configuration functions */ +/*! + * Set crystal oscillator frequencies used for the RTL2832 and the tuner IC. + * + * Usually both ICs use the same clock. Changing the clock may make sense if + * you are applying an external clock to the tuner or to compensate the + * frequency (and samplerate) error caused by the original cheap crystal. + * + * NOTE: Call this function only if you know what you are doing. + * + * \param dev the device handle given by rtlsdr_open() + * \param rtl_freq frequency value used to clock the RTL2832 in Hz + * \param tuner_freq frequency value used to clock the tuner IC in Hz + * \return 0 on success + */ +RTLSDR_API int rtlsdr_set_xtal_freq(rtlsdr_dev_t *dev, uint32_t rtl_freq, + uint32_t tuner_freq); + +/*! + * Get crystal oscillator frequencies used for the RTL2832 and the tuner IC. + * + * Usually both ICs use the same clock. + * + * \param dev the device handle given by rtlsdr_open() + * \param rtl_freq frequency value used to clock the RTL2832 in Hz + * \param tuner_freq frequency value used to clock the tuner IC in Hz + * \return 0 on success + */ +RTLSDR_API int rtlsdr_get_xtal_freq(rtlsdr_dev_t *dev, uint32_t *rtl_freq, + uint32_t *tuner_freq); + RTLSDR_API int rtlsdr_set_center_freq(rtlsdr_dev_t *dev, uint32_t freq); /*! diff --git a/include/rtlsdr_i2c.h b/include/rtlsdr_i2c.h index 56ac9b6..7676689 100644 --- a/include/rtlsdr_i2c.h +++ b/include/rtlsdr_i2c.h @@ -1,9 +1,8 @@ #ifndef __I2C_H #define __I2C_H -typedef struct rtlsdr_dev rtlsdr_dev_t; - -int rtlsdr_i2c_write(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t *buffer, int len); -int rtlsdr_i2c_read(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t *buffer, int len); +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 |