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/* -*- c++ -*- */
/*
* Copyright 2014 Analog Devices Inc.
* Author: Paul Cercueil <paul.cercueil@analog.com>
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "device_source_impl.h"
#include "fmcomms2_sink_impl.h"
#include <gnuradio/io_signature.h>
#include <ad9361.h>
#include <mutex>
#include <string>
#include <thread>
#include <vector>
#define MIN_RATE 520333
#define DECINT_RATIO 8
#define OVERFLOW_CHECK_PERIOD_MS 1000
namespace gr {
namespace iio {
fmcomms2_sink::sptr fmcomms2_sink::make(const std::string& uri,
const std::vector<bool>& ch_en,
unsigned long buffer_size,
bool cyclic)
{
return gnuradio::get_initial_sptr(new fmcomms2_sink_impl(
device_source_impl::get_context(uri), ch_en, buffer_size, cyclic));
}
std::vector<std::string> fmcomms2_sink_impl::get_channels_vector(bool ch1_en,
bool ch2_en,
bool ch3_en,
bool ch4_en)
{
std::vector<std::string> channels;
if (ch1_en)
channels.push_back("voltage0");
if (ch2_en)
channels.push_back("voltage1");
if (ch3_en)
channels.push_back("voltage2");
if (ch4_en)
channels.push_back("voltage3");
return channels;
}
std::vector<std::string>
fmcomms2_sink_impl::get_channels_vector(const std::vector<bool>& ch_en)
{
std::vector<std::string> channels;
int idx = 0;
for (auto en : ch_en) {
if (en) {
channels.push_back("voltage" + std::to_string(idx));
}
idx++;
}
return channels;
}
fmcomms2_sink_impl::fmcomms2_sink_impl(iio_context* ctx,
const std::vector<bool>& ch_en,
unsigned long buffer_size,
bool cyclic)
: gr::sync_block("fmcomms2_sink",
gr::io_signature::make(1, -1, sizeof(short)),
gr::io_signature::make(0, 0, 0)),
device_sink_impl(ctx,
true,
"cf-ad9361-dds-core-lpc",
get_channels_vector(ch_en),
"ad9361-phy",
std::vector<std::string>(),
buffer_size,
0,
cyclic),
cyclic(cyclic)
{
stop_thread = false;
underflow_thd = std::thread(&fmcomms2_sink_impl::check_underflow, this);
}
fmcomms2_sink_impl::~fmcomms2_sink_impl()
{
std::unique_lock<std::mutex> lock(uf_mutex);
stop_thread = true;
lock.unlock();
underflow_thd.join();
}
void fmcomms2_sink_impl::set_len_tag_key(const std::string& str)
{
device_sink_impl::set_len_tag_key(str);
}
void fmcomms2_sink_impl::check_underflow(void)
{
uint32_t status;
int ret;
std::unique_lock<std::mutex> lock(uf_mutex, std::defer_lock);
// Clear status registers
iio_device_reg_write(dev, 0x80000088, 0x6);
for (;;) {
ret = iio_device_reg_read(dev, 0x80000088, &status);
if (ret) {
throw std::runtime_error("Failed to read underflow status register");
}
if (status & 1) {
printf("U");
// Clear status registers
iio_device_reg_write(dev, 0x80000088, 1);
}
#ifdef _WIN32
Sleep(OVERFLOW_CHECK_PERIOD_MS);
#else
usleep(OVERFLOW_CHECK_PERIOD_MS * 1000);
#endif
lock.lock();
if (stop_thread)
break;
lock.unlock();
}
}
void fmcomms2_sink_impl::set_bandwidth(unsigned long bandwidth)
{
std::vector<std::string> params;
params.push_back("out_voltage_rf_bandwidth=" + std::to_string(bandwidth));
device_source_impl::set_params(this->phy, params);
d_bandwidth = bandwidth;
}
void fmcomms2_sink_impl::set_rf_port_select(const std::string& rf_port_select)
{
std::vector<std::string> params;
params.push_back("out_voltage0_rf_port_select=" + rf_port_select);
device_source_impl::set_params(this->phy, params);
d_rf_port_select = rf_port_select;
}
void fmcomms2_sink_impl::set_frequency(unsigned long long frequency)
{
std::vector<std::string> params;
params.push_back("out_altvoltage1_TX_LO_frequency=" + std::to_string(frequency));
device_source_impl::set_params(this->phy, params);
d_frequency = frequency;
}
void fmcomms2_sink_impl::set_samplerate(unsigned long samplerate)
{
std::vector<std::string> params;
if (samplerate < MIN_RATE) {
int ret;
samplerate = samplerate * DECINT_RATIO;
ret = device_source_impl::handle_decimation_interpolation(
samplerate, "voltage0", "sampling_frequency", dev, false, true);
if (ret < 0)
samplerate = samplerate / 8;
} else // Disable decimation filter if on
{
device_source_impl::handle_decimation_interpolation(
samplerate, "voltage0", "sampling_frequency", dev, true, true);
}
device_source_impl::set_params(this->phy, params);
d_samplerate = samplerate;
update_dependent_params();
}
void fmcomms2_sink_impl::set_attenuation(size_t chan, double attenuation)
{
bool is_fmcomms4 = !iio_device_find_channel(phy, "voltage1", false);
if ((!is_fmcomms4 && chan > 0) || chan > 1) {
throw std::runtime_error("Channel out of range for this device");
}
std::vector<std::string> params;
std::string att_value = std::to_string(-attenuation);
std::string::size_type idx = att_value.find(',');
if (idx != std::string::npos) // found , as decimal separator, so change to .
att_value.replace(idx, 1, ".");
params.push_back("out_voltage" + std::to_string(chan) + "_hardwaregain=" + att_value);
device_source_impl::set_params(this->phy, params);
d_attenuation[chan] = attenuation;
}
void fmcomms2_sink_impl::update_dependent_params()
{
std::vector<std::string> params;
// Set rate configuration
if (d_filter_source.compare("Off") == 0) {
params.push_back("out_voltage_sampling_frequency=" +
std::to_string(d_samplerate));
params.push_back("out_voltage_rf_bandwidth=" + std::to_string(d_bandwidth));
} else if (d_filter_source.compare("Auto") == 0) {
int ret = ad9361_set_bb_rate(phy, d_samplerate);
if (ret) {
throw std::runtime_error("Unable to set BB rate");
params.push_back("out_voltage_rf_bandwidth=" + std::to_string(d_bandwidth));
}
} else if (d_filter_source.compare("File") == 0) {
std::string filt(d_filter_filename);
if (!device_source_impl::load_fir_filter(filt, phy))
throw std::runtime_error("Unable to load filter file");
} else if (d_filter_source.compare("Design") == 0) {
int ret = ad9361_set_bb_rate_custom_filter_manual(
phy, d_samplerate, d_fpass, d_fstop, d_bandwidth, d_bandwidth);
if (ret) {
throw std::runtime_error("Unable to set BB rate");
}
} else
throw std::runtime_error("Unknown filter configuration");
device_source_impl::set_params(this->phy, params);
// Filters can only be disabled after the sample rate has been set
if (d_filter_source.compare("Off") == 0) {
int ret = ad9361_set_trx_fir_enable(phy, false);
if (ret) {
throw std::runtime_error("Unable to disable filters");
}
}
}
void fmcomms2_sink_impl::set_filter_params(const std::string& filter_source,
const std::string& filter_filename,
float fpass,
float fstop)
{
d_filter_source = filter_source;
d_filter_filename = filter_filename;
d_fpass = fpass;
d_fstop = fstop;
update_dependent_params();
}
int fmcomms2_sink_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
int ret = device_sink_impl::work(noutput_items, input_items, output_items);
if (ret < 0 || !cyclic)
return ret;
else
return WORK_DONE;
}
} /* namespace iio */
} /* namespace gr */
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