diff options
| author | kurtis.heimerl <kurtis.heimerl@19bc5d8c-e614-43d4-8b26-e1612bc8e597> | 2011-11-26 03:18:39 +0000 |
|---|---|---|
| committer | kurtis.heimerl <kurtis.heimerl@19bc5d8c-e614-43d4-8b26-e1612bc8e597> | 2011-11-26 03:18:39 +0000 |
| commit | ce31733860392debd9c9d0a6c93eb52ab47da0d8 (patch) | |
| tree | 68a467239f5b53f8710514dcb3ce981ba6b926ee /Transceiver52M/UHDDevice.cpp | |
| parent | 513a6291833a589ac7b8fc791b051131d1b8f158 (diff) | |
transceiver: add option for host based resampling
The resampling transceiver is unified with the 52MHz
version. The option to resample 400ksps from the device
to a GSM appropriate 270.833ksps is enabled at compile
time with the following option.
./configure --with-resamp
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2672 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Diffstat (limited to 'Transceiver52M/UHDDevice.cpp')
| -rw-r--r-- | Transceiver52M/UHDDevice.cpp | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/Transceiver52M/UHDDevice.cpp b/Transceiver52M/UHDDevice.cpp index 37a3b96..cc90d73 100644 --- a/Transceiver52M/UHDDevice.cpp +++ b/Transceiver52M/UHDDevice.cpp @@ -25,10 +25,15 @@ #include <uhd/usrp/single_usrp.hpp> #include <uhd/utils/thread_priority.hpp> +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + /* use_ext_ref - Enable external 10MHz clock reference - master_clk_rt - Master clock frequency + master_clk_rt - Master clock frequency - ignored if host resampling is + enabled rx_smpl_offset - Timing correction in seconds between receive and transmit timestamps. This value corrects for delays on @@ -41,10 +46,15 @@ */ const bool use_ext_ref = false; const double master_clk_rt = 52e6; -const double rx_smpl_offset = .0000869; const size_t smpl_buf_sz = (1 << 20); const float tx_ampl = .3; +#ifdef RESAMPLE +const double rx_smpl_offset = .00005; +#else +const double rx_smpl_offset = .0000869; +#endif + /** Timestamp conversion @param timestamp a UHD or OpenBTS timestamp @param rate sample rate @@ -290,6 +300,7 @@ double uhd_device::set_rates(double rate) { double actual_rt, actual_clk_rt; +#ifndef RESAMPLE // Set master clock rate usrp_dev->set_master_clock_rate(master_clk_rt); actual_clk_rt = usrp_dev->get_master_clock_rate(); @@ -298,6 +309,7 @@ double uhd_device::set_rates(double rate) LOG(ERROR) << "Failed to set master clock rate"; return -1.0; } +#endif // Set sample rates usrp_dev->set_tx_rate(rate); |