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-rw-r--r--host/lib/usrp/usrp_e/dsp_impl.cpp137
-rw-r--r--host/lib/usrp/usrp_e/io_impl.cpp40
-rw-r--r--host/lib/usrp/usrp_e/mboard_impl.cpp12
-rw-r--r--host/lib/usrp/usrp_e/usrp_e_impl.hpp6
4 files changed, 182 insertions, 13 deletions
diff --git a/host/lib/usrp/usrp_e/dsp_impl.cpp b/host/lib/usrp/usrp_e/dsp_impl.cpp
index e61f529ab..11d22d15f 100644
--- a/host/lib/usrp/usrp_e/dsp_impl.cpp
+++ b/host/lib/usrp/usrp_e/dsp_impl.cpp
@@ -15,14 +15,34 @@
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
-#include <boost/bind.hpp>
#include "usrp_e_impl.hpp"
+#include "usrp_e_regs.hpp"
+#include <uhd/usrp/dsp_props.hpp>
+#include <uhd/utils/assert.hpp>
+#include <boost/bind.hpp>
+#include <boost/math/special_functions/round.hpp>
+
+#define rint boost::math::iround
+using namespace uhd;
using namespace uhd::usrp;
/***********************************************************************
* Helper Functions
**********************************************************************/
+static boost::uint32_t calculate_freq_word_and_update_actual_freq(double &freq, double clock_freq){
+ UHD_ASSERT_THROW(std::abs(freq) < clock_freq/2.0);
+ static const double scale_factor = std::pow(2.0, 32);
+
+ //calculate the freq register word
+ boost::uint32_t freq_word = rint((freq / clock_freq) * scale_factor);
+
+ //update the actual frequency
+ freq = (double(freq_word) / scale_factor) * clock_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
@@ -57,15 +77,62 @@ void usrp_e_impl::rx_ddc_init(void){
/***********************************************************************
* RX DDC Get
**********************************************************************/
-void usrp_e_impl::rx_ddc_get(const wax::obj &, wax::obj &){
- UHD_THROW_PROP_GET_ERROR();
+void usrp_e_impl::rx_ddc_get(const wax::obj &key, wax::obj &val){
+ switch(key.as<dsp_prop_t>()){
+ case DSP_PROP_NAME:
+ val = std::string("usrp-e ddc0");
+ return;
+
+ case DSP_PROP_OTHERS:
+ val = prop_names_t(); //empty
+ return;
+
+ case DSP_PROP_FREQ_SHIFT:
+ val = _ddc_freq;
+ return;
+
+ case DSP_PROP_CODEC_RATE:
+ val = MASTER_CLOCK_RATE;
+ return;
+
+ case DSP_PROP_HOST_RATE:
+ val = MASTER_CLOCK_RATE/_ddc_decim;
+ return;
+
+ default: UHD_THROW_PROP_GET_ERROR();
+ }
}
/***********************************************************************
* RX DDC Set
**********************************************************************/
-void usrp_e_impl::rx_ddc_set(const wax::obj &, const wax::obj &){
- UHD_THROW_PROP_SET_ERROR();
+void usrp_e_impl::rx_ddc_set(const wax::obj &key, const wax::obj &val){
+ switch(key.as<dsp_prop_t>()){
+
+ case DSP_PROP_FREQ_SHIFT:{
+ double new_freq = val.as<double>();
+ _iface->poke32(UE_REG_DSP_RX_FREQ,
+ calculate_freq_word_and_update_actual_freq(new_freq, MASTER_CLOCK_RATE)
+ );
+ _ddc_freq = new_freq; //shadow
+ }
+ return;
+
+ case DSP_PROP_HOST_RATE:{
+ //set the decimation
+ _ddc_decim = rint(MASTER_CLOCK_RATE/val.as<double>());
+ _iface->poke32(UE_REG_DSP_RX_DECIM_RATE, calculate_cic_word(_ddc_decim));
+
+ //set the scaling
+ static const boost::int16_t default_rx_scale_iq = 1024;
+ _iface->poke32(UE_REG_DSP_RX_SCALE_IQ,
+ calculate_iq_scale_word(default_rx_scale_iq, default_rx_scale_iq)
+ );
+ }
+ return;
+
+ default: UHD_THROW_PROP_SET_ERROR();
+ }
}
/***********************************************************************
@@ -81,13 +148,65 @@ void usrp_e_impl::tx_duc_init(void){
/***********************************************************************
* TX DUC Get
**********************************************************************/
-void usrp_e_impl::tx_duc_get(const wax::obj &, wax::obj &){
- UHD_THROW_PROP_GET_ERROR();
+void usrp_e_impl::tx_duc_get(const wax::obj &key, wax::obj &val){
+ switch(key.as<dsp_prop_t>()){
+ case DSP_PROP_NAME:
+ val = std::string("usrp-e duc0");
+ return;
+
+ case DSP_PROP_OTHERS:
+ val = prop_names_t(); //empty
+ return;
+
+ case DSP_PROP_FREQ_SHIFT:
+ val = _duc_freq;
+ return;
+
+ case DSP_PROP_CODEC_RATE:
+ val = MASTER_CLOCK_RATE;
+ return;
+
+ case DSP_PROP_HOST_RATE:
+ val = MASTER_CLOCK_RATE/_duc_interp;
+ return;
+
+ default: UHD_THROW_PROP_GET_ERROR();
+ }
}
/***********************************************************************
* TX DUC Set
**********************************************************************/
-void usrp_e_impl::tx_duc_set(const wax::obj &, const wax::obj &){
- UHD_THROW_PROP_SET_ERROR();
+void usrp_e_impl::tx_duc_set(const wax::obj &key, const wax::obj &val){
+ switch(key.as<dsp_prop_t>()){
+
+ case DSP_PROP_FREQ_SHIFT:{
+ double new_freq = val.as<double>();
+ _iface->poke32(UE_REG_DSP_TX_FREQ,
+ calculate_freq_word_and_update_actual_freq(new_freq, MASTER_CLOCK_RATE)
+ );
+ _duc_freq = new_freq; //shadow
+ }
+ return;
+
+ case DSP_PROP_HOST_RATE:{
+ _duc_interp = rint(MASTER_CLOCK_RATE/val.as<double>());
+
+ // Calculate CIC interpolation (i.e., without halfband interpolators)
+ size_t tmp_interp = calculate_cic_word(_duc_interp) & 0xff;
+
+ // Calculate closest multiplier constant to reverse gain absent scale multipliers
+ double interp_cubed = std::pow(double(tmp_interp), 3);
+ boost::int16_t scale = rint((4096*std::pow(2, ceil(log2(interp_cubed))))/(1.65*interp_cubed));
+
+ //set the interpolation
+ _iface->poke32(UE_REG_DSP_TX_INTERP_RATE, calculate_cic_word(_duc_interp));
+
+ //set the scaling
+ _iface->poke32(UE_REG_DSP_TX_SCALE_IQ, calculate_iq_scale_word(scale, scale));
+ }
+ return;
+
+ default: UHD_THROW_PROP_SET_ERROR();
+ }
}
diff --git a/host/lib/usrp/usrp_e/io_impl.cpp b/host/lib/usrp/usrp_e/io_impl.cpp
index f83829cb8..5914bc613 100644
--- a/host/lib/usrp/usrp_e/io_impl.cpp
+++ b/host/lib/usrp/usrp_e/io_impl.cpp
@@ -16,6 +16,7 @@
//
#include "usrp_e_impl.hpp"
+#include "usrp_e_regs.hpp"
#include "../../transport/vrt_packet_handler.hpp"
#include <boost/bind.hpp>
#include <fcntl.h> //read, write
@@ -86,9 +87,44 @@ struct usrp_e_impl::io_impl{
};
void usrp_e_impl::io_init(void){
+ //setup rx data path
+ _iface->poke32(UE_REG_CTRL_RX_NSAMPS_PER_PKT, 1000); //FIXME magic number
+ _iface->poke32(UE_REG_CTRL_RX_NCHANNELS, 1);
+ _iface->poke32(UE_REG_CTRL_RX_CLEAR_OVERRUN, 1); //reset
+ _iface->poke32(UE_REG_CTRL_RX_VRT_HEADER, 0
+ | (0x1 << 28) //if data with stream id
+ | (0x1 << 26) //has trailer
+ | (0x3 << 22) //integer time other
+ | (0x1 << 20) //fractional time sample count
+ );
+ _iface->poke32(UE_REG_CTRL_RX_VRT_STREAM_ID, 0);
+ _iface->poke32(UE_REG_CTRL_RX_VRT_TRAILER, 0);
+
_io_impl = UHD_PIMPL_MAKE(io_impl, (_iface->get_file_descriptor()));
}
+static boost::uint32_t make_stream_cmd(bool now, bool chain, boost::uint32_t nsamps){
+ return (((now)? 1 : 0) << 31) | (((chain)? 1 : 0) << 30) | nsamps;
+}
+
+void usrp_e_impl::issue_stream_cmd(const stream_cmd_t &stream_cmd){
+ boost::uint32_t cmd = 0;
+ switch(stream_cmd.stream_mode){
+ case stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE:
+ cmd = make_stream_cmd(stream_cmd.stream_now, false, stream_cmd.num_samps);
+ break;
+
+ case stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_MORE:
+ cmd = make_stream_cmd(stream_cmd.stream_now, true, stream_cmd.num_samps);
+ break;
+
+ default: throw std::runtime_error("stream mode not implemented");
+ }
+ _iface->poke32(UE_REG_CTRL_RX_STREAM_CMD, cmd);
+ _iface->poke32(UE_REG_CTRL_RX_TIME_SECS, stream_cmd.time_spec.secs);
+ _iface->poke32(UE_REG_CTRL_RX_TIME_TICKS, stream_cmd.time_spec.get_ticks(MASTER_CLOCK_RATE));
+}
+
/***********************************************************************
* Data Send
**********************************************************************/
@@ -110,7 +146,7 @@ size_t usrp_e_impl::send(
send_mode,
io_type,
send_otw_type, //TODO
- 64e6, //TODO
+ MASTER_CLOCK_RATE,
boost::bind(&data_transport::get_send_buff, &_io_impl->transport),
(MAX_BUFF_SIZE - sizeof(usrp_transfer_frame))/send_otw_type.get_sample_size(),
offsetof(usrp_transfer_frame, buf)
@@ -138,7 +174,7 @@ size_t usrp_e_impl::recv(
recv_mode,
io_type,
recv_otw_type, //TODO
- 64e6, //TODO
+ MASTER_CLOCK_RATE,
boost::bind(&data_transport::get_recv_buff, &_io_impl->transport),
offsetof(usrp_transfer_frame, buf)
);
diff --git a/host/lib/usrp/usrp_e/mboard_impl.cpp b/host/lib/usrp/usrp_e/mboard_impl.cpp
index 00ce4b782..efbde38ce 100644
--- a/host/lib/usrp/usrp_e/mboard_impl.cpp
+++ b/host/lib/usrp/usrp_e/mboard_impl.cpp
@@ -108,6 +108,14 @@ void usrp_e_impl::mboard_get(const wax::obj &key_, wax::obj &val){
/***********************************************************************
* Mboard Set
**********************************************************************/
-void usrp_e_impl::mboard_set(const wax::obj &, const wax::obj &){
- UHD_THROW_PROP_SET_ERROR();
+void usrp_e_impl::mboard_set(const wax::obj &key, const wax::obj &val){
+ //handle the get request conditioned on the key
+ switch(key.as<mboard_prop_t>()){
+
+ case MBOARD_PROP_STREAM_CMD:
+ issue_stream_cmd(val.as<stream_cmd_t>());
+ return;
+
+ default: UHD_THROW_PROP_SET_ERROR();
+ }
}
diff --git a/host/lib/usrp/usrp_e/usrp_e_impl.hpp b/host/lib/usrp/usrp_e/usrp_e_impl.hpp
index bdb1a675b..a9fd856fe 100644
--- a/host/lib/usrp/usrp_e/usrp_e_impl.hpp
+++ b/host/lib/usrp/usrp_e/usrp_e_impl.hpp
@@ -22,11 +22,14 @@
#include <uhd/usrp/usrp_e.hpp>
#include <uhd/usrp/dboard_eeprom.hpp>
#include <uhd/types/clock_config.hpp>
+#include <uhd/types/stream_cmd.hpp>
#include <uhd/usrp/dboard_manager.hpp>
#ifndef INCLUDED_USRP_E_IMPL_HPP
#define INCLUDED_USRP_E_IMPL_HPP
+static const double MASTER_CLOCK_RATE = 64e6;
+
/*!
* Make a usrp-e dboard interface.
* \param iface the usrp-e interface object
@@ -90,6 +93,7 @@ private:
//handle io stuff
UHD_PIMPL_DECL(io_impl) _io_impl;
void io_init(void);
+ void issue_stream_cmd(const uhd::stream_cmd_t &stream_cmd);
//configuration shadows
uhd::clock_config_t _clock_config;
@@ -131,12 +135,14 @@ private:
void rx_ddc_init(void);
void rx_ddc_get(const wax::obj &, wax::obj &);
void rx_ddc_set(const wax::obj &, const wax::obj &);
+ double _ddc_freq; size_t _ddc_decim;
wax_obj_proxy::sptr _rx_ddc_proxy;
//tx duc functions and settings
void tx_duc_init(void);
void tx_duc_get(const wax::obj &, wax::obj &);
void tx_duc_set(const wax::obj &, const wax::obj &);
+ double _duc_freq; size_t _duc_interp;
wax_obj_proxy::sptr _tx_duc_proxy;
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 22:41:15 +0000