diff options
Diffstat (limited to 'host/lib/rfnoc/ddc_block_ctrl_impl.cpp')
| -rw-r--r-- | host/lib/rfnoc/ddc_block_ctrl_impl.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/host/lib/rfnoc/ddc_block_ctrl_impl.cpp b/host/lib/rfnoc/ddc_block_ctrl_impl.cpp index f115a876b..caa1f4c20 100644 --- a/host/lib/rfnoc/ddc_block_ctrl_impl.cpp +++ b/host/lib/rfnoc/ddc_block_ctrl_impl.cpp @@ -226,6 +226,9 @@ private: double set_output_rate(const double requested_rate, const size_t chan) { const double input_rate = get_arg<double>("input_rate"); + const double tick_rate = _tree->exists("tick_rate") ? + _tree->access<double>("tick_rate").get() : input_rate; + const size_t m = size_t(tick_rate / input_rate); const size_t decim_rate = boost::math::iround( input_rate / this->get_output_rates().clip(requested_rate, true)); size_t decim = decim_rate; @@ -241,7 +244,8 @@ private: sr_write("DECIM_WORD", (hb_enable << 8) | (decim & 0xff), chan); // Rate change = M/N - sr_write("N", std::pow(2.0, double(hb_enable)) * (decim & 0xff), chan); + sr_write("M", m, chan); + sr_write("N", m * std::pow(2.0, double(hb_enable)) * (decim & 0xff), chan); const auto noc_id = _tree->access<uint64_t>(_root_path / "noc_id").get(); // FIXME this should be a rb reg in the FPGA, not based on a hard-coded // Noc-ID |