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add api function to control the IF gain for E4000 tuners

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This commit is contained in:
Dimitri Stolnikov
2012-07-05 00:28:52 +02:00
parent 304c7c863d
commit 6ea029d92c
3 changed files with 39 additions and 13 deletions
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10
include/rtl-sdr.h
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@ -165,6 +165,16 @@ RTLSDR_API int rtlsdr_set_tuner_gain(rtlsdr_dev_t *dev, int gain);
*/
RTLSDR_API int rtlsdr_get_tuner_gain(rtlsdr_dev_t *dev);
/*!
* Set the intermediate frequency gain for the device.
*
* \param dev the device handle given by rtlsdr_open()
* \param stage intermediate frequency gain stage number (1 to 6 for E4000)
* \param gain in tenths of a dB, -30 means -3.0 dB.
* \return 0 on success
*/
RTLSDR_API int rtlsdr_set_tuner_if_gain(rtlsdr_dev_t *dev, int stage, int gain);
/*!
* Set the gain mode (automatic/manual) for the device.
* Manual gain mode must be enabled for the gain setter function to work.