def set_gain(self, gain):
''' Set gain of tuner.
If gain is 'auto', AGC mode is enabled; otherwise gain is in dB. The actual
gain used is rounded to the nearest value supported by the device (see the
values in RtlSdr.valid_gains_db).
'''
if isinstance(gain, str) and gain == 'auto':
# disable manual gain -> enable AGC
self.set_manual_gain_enabled(False)
return
# find supported gain nearest to one requested
errors = [abs(10*gain - g) for g in self.gain_values]
nearest_gain_ind = errors.index(min(errors))
# disable AGC
self.set_manual_gain_enabled(True)
result = librtlsdr.rtlsdr_set_tuner_gain(self.dev_p,
self.gain_values[nearest_gain_ind])
if result < 0:
self.close()
raise IOError('Error code %d when setting gain to %d'\
% (result, gain))
return
def set_gain(self, gain):
""" Set gain of tuner.
If gain is 'auto', AGC mode is enabled; otherwise gain is in dB. The actual
gain used is rounded to the nearest value supported by the device (see the
values in RtlSdr.GAIN_VALUES for these in tenths of dB's).
"""
if isinstance(gain, str) and gain == "auto":
# disable manual gain -> enable AGC
self.set_manual_gain_enabled(False)
return
# find supported gain nearest to one requested
errors = [abs(10 * gain - g) for g in self.GAIN_VALUES]
nearest_gain_ind = errors.index(min(errors))
# disable AGC
self.set_manual_gain_enabled(True)
result = librtlsdr.rtlsdr_set_tuner_gain(self.dev_p, self.GAIN_VALUES[nearest_gain_ind])
if result < 0:
self.close()
raise IOError("Error code %d when setting gain to %d" % (result, gain))
return
def set_gain(self, gain):
''' Set gain of tuner.
If gain is 'auto', AGC mode is enabled; otherwise gain is in dB. The actual
gain used is rounded to the nearest value supported by the device (see the
values in RtlSdr.valid_gains_db).
'''
if isinstance(gain, str) and gain == 'auto':
# disable manual gain -> enable AGC
self.set_manual_gain_enabled(False)
return
# find supported gain nearest to one requested
errors = [abs(10*gain - g) for g in self.gain_values]
nearest_gain_ind = errors.index(min(errors))
# disable AGC
self.set_manual_gain_enabled(True)
result = librtlsdr.rtlsdr_set_tuner_gain(self.dev_p,
self.gain_values[nearest_gain_ind])
if result < 0:
self.close()
raise IOError('Error code %d when setting gain to %d'\
% (result, gain))
return
def set_gain(self, gain):
gain = self.GAIN_VALUES[int(gain)]
if not self.manual_gain_mode:
self.set_gain_mode(True)
result = librtlsdr.rtlsdr_set_tuner_gain(self.dev_p, gain)
if result < 0:
self.close()
raise IOError('Error code %d when setting gain to %d'\
% (result, gain))
return
