diff options
| -rw-r--r-- | host/lib/usrp/usrp2/dsp_impl.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/host/lib/usrp/usrp2/dsp_impl.cpp b/host/lib/usrp/usrp2/dsp_impl.cpp index e6e905fdc..fc4c5479e 100644 --- a/host/lib/usrp/usrp2/dsp_impl.cpp +++ b/host/lib/usrp/usrp2/dsp_impl.cpp @@ -52,13 +52,17 @@ static boost::uint32_t calculate_freq_word_and_update_actual_freq(double &freq, return freq_word; } +// Check if requested decim/interp rate is: +// multiple of 4, enable two halfband filters +// multiple of 2, enable one halfband filter +// handle remainder in CIC static boost::uint32_t calculate_cic_word(size_t rate){ int hb0 = 0, hb1 = 0; - if (rate & 0x1){ + if (not (rate & 0x1)){ hb0 = 1; rate /= 2; } - if (rate & 0x1){ + if (not (rate & 0x1)){ hb1 = 1; rate /= 2; } |