airspy: implement DC bias control
use with -a "airspy,bias=1" to enable DC bias on antenna input
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@ -250,7 +250,7 @@ Lines ending with ... mean it's possible to bind devices together by specifying
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netsdr=127.0.0.1[:50000][,nchan=2]
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netsdr=127.0.0.1[:50000][,nchan=2]
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sdr-ip=127.0.0.1[:50000]
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sdr-ip=127.0.0.1[:50000]
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sdr-iq=/dev/ttyUSB0
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sdr-iq=/dev/ttyUSB0
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airspy=0
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airspy=0[,bias=0|1]
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#end if
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#end if
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hackrf=0[,buffers=32]
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hackrf=0[,buffers=32]
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bladerf=0[,fpga='/path/to/the/bitstream.rbf']
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bladerf=0[,fpga='/path/to/the/bitstream.rbf']
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@ -123,6 +123,13 @@ airspy_source_c::airspy_source_c (const std::string &args)
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set_if_gain( 0 ); /* preset to a reasonable default (non-GRC use case) */
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set_if_gain( 0 ); /* preset to a reasonable default (non-GRC use case) */
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if ( dict.count( "bias" ) )
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{
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bool bias = boost::lexical_cast<bool>( dict["bias"] );
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int ret = airspy_set_rf_bias(_dev, (uint8_t)bias);
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AIRSPY_THROW_ON_ERROR(ret, "Failed to enable DC bias")
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}
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_fifo = new boost::circular_buffer<gr_complex>(5000000);
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_fifo = new boost::circular_buffer<gr_complex>(5000000);
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if (!_fifo) {
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if (!_fifo) {
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throw std::runtime_error( std::string(__FUNCTION__) + " " +
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throw std::runtime_error( std::string(__FUNCTION__) + " " +
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