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/* -*- c++ -*- */
/*
* Copyright 2018 Analog Devices Inc.
* Author: Travis Collins <travis.collins@analog.com>
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gnuradio/io_signature.h>
#include "attr_source_impl.h"
#include <boost/lexical_cast.hpp>
#include <boost/chrono.hpp>
#include <boost/thread/thread.hpp>
#include <vector>
namespace gr {
namespace iio {
attr_source::sptr
attr_source::make(const std::string &uri, const std::string &device, const std::string &channel,
const std::string &attribute, int update_interval_ms, int samples_per_update, int data_type,
int attr_type, bool output, uint32_t address, bool required_enable)
{
return gnuradio::get_initial_sptr
(new attr_source_impl(uri, device, channel, attribute, update_interval_ms, samples_per_update,
data_type, attr_type, output, address, required_enable));
}
size_t attr_source_impl::type_sizeof(int data_type, int attr_type)
{
size_t dsize = 0;
if (attr_type == 3)
dsize = sizeof(int);
else {
switch (data_type) {
case 0:
dsize = sizeof(double);
break;
case 1:
dsize = sizeof(float);
break;
case 2:
dsize = sizeof(long long);
break;
case 3:
dsize = sizeof(int);
break;
case 4:
dsize = sizeof(uint8_t);
break;
}
}
return dsize;
}
/*
* The private constructor
*/
attr_source_impl::attr_source_impl(const std::string &uri, const std::string &device, const std::string &channel,
const std::string &attribute, int update_interval_ms, int samples_per_update, int data_type, int attr_type,
bool output, uint32_t address, bool required_enable)
: gr::sync_block("attr_source",
gr::io_signature::make(0, 0, 0),
gr::io_signature::make(1, -1, type_sizeof(data_type, attr_type) )),
device(device),
channel(channel),
uri(uri),
attribute(attribute),
update_interval_ms(update_interval_ms),
samples_per_update(samples_per_update),
attr_type(attr_type),
data_type(data_type),
output(output),
m_attr_type(attr_type),
address(address),
required_enable(required_enable)
{
ctx = device_source_impl::get_context(uri);
if (!ctx)
throw std::runtime_error("Unable to create context");
dev = iio_context_find_device(ctx, device.c_str());
if (!dev) {
iio_context_destroy(ctx);
throw std::runtime_error("Device not found");
}
// Channel only needed for channel attributes
if (attr_type==0)
{
chan = iio_device_find_channel(dev, channel.c_str(), output);
if (!chan) {
iio_context_destroy(ctx);
throw std::runtime_error("Channel not found");
}
}
// Required for MathWorks generated IP
if ((attr_type==3) && required_enable)
{
// int ret = iio_device_debug_attr_write(dev, "direct_reg_access", "enabled");
int ret = iio_device_attr_write(dev, "reg_access", "enabled");
if (ret < 0) {
char error[1024];
sprintf(error, "Failed to enabled register for device: %s [%d]", device.c_str(), ret);
throw std::runtime_error(error);
}
}
set_output_multiple(samples_per_update);
}
/*
* Our virtual destructor.
*/
attr_source_impl::~attr_source_impl()
{
}
void
attr_source_impl::check(int ret)
{
if (ret < 0)
std::cerr << "Reading parameter failed: "<< ret << std::endl;
}
void
attr_source_impl::get_register_data(uint32_t address, int* value)
{
uint32_t u32value;
ret = iio_device_reg_read(dev, address, &u32value);
attr_source_impl::check(ret);
*value = boost::lexical_cast<int>(u32value);
}
void
attr_source_impl::get_attribute_data(const std::string& attribute, double* value)
{
switch (attr_type) {
case 0:
ret = iio_channel_attr_read_double(chan, attribute.c_str(), value);
break;
case 1:
ret = iio_device_attr_read_double(dev, attribute.c_str(), value);
break;
default:
ret = iio_device_debug_attr_read_double(dev, attribute.c_str(), value);
break;
}
attr_source_impl::check(ret);
}
void
attr_source_impl::get_attribute_data(const std::string& attribute, float* value)
{
double dvalue;
switch (attr_type) {
case 0:
ret = iio_channel_attr_read_double(chan, attribute.c_str(), &dvalue);
break;
case 1:
ret = iio_device_attr_read_double(dev, attribute.c_str(), &dvalue);
break;
default:
ret = iio_device_debug_attr_read_double(dev, attribute.c_str(), &dvalue);
break;
}
attr_source_impl::check(ret);
*value = boost::lexical_cast<float>(dvalue);
}
void
attr_source_impl::get_attribute_data(const std::string& attribute, long long* value)
{
switch (attr_type) {
case 0:
ret = iio_channel_attr_read_longlong(chan, attribute.c_str(), value);
break;
case 1:
ret = iio_device_attr_read_longlong(dev, attribute.c_str(), value);
break;
default:
ret = iio_device_debug_attr_read_longlong(dev, attribute.c_str(), value);
break;
}
attr_source_impl::check(ret);
}
void
attr_source_impl::get_attribute_data(const std::string& attribute, int* value)
{
long long llvalue;
switch (attr_type) {
case 0:
ret = iio_channel_attr_read_longlong(chan, attribute.c_str(), &llvalue);
break;
case 1:
ret = iio_device_attr_read_longlong(dev, attribute.c_str(), &llvalue);
break;
default:
ret = iio_device_debug_attr_read_longlong(dev, attribute.c_str(), &llvalue);
break;
}
attr_source_impl::check(ret);
*value = boost::lexical_cast<int>(llvalue);
}
void
attr_source_impl::get_attribute_data(const std::string& attribute, uint8_t* value)
{
bool bvalue;
switch (attr_type) {
case 0:
ret = iio_channel_attr_read_bool(chan, attribute.c_str(), &bvalue);
break;
case 1:
ret = iio_device_attr_read_bool(dev, attribute.c_str(), &bvalue);
break;
default:
ret = iio_device_debug_attr_read_bool(dev, attribute.c_str(), &bvalue);
break;
}
attr_source_impl::check(ret);
*value = boost::lexical_cast<uint8_t>(bvalue);
}
int
attr_source_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
int sample;
void *out;
out = output_items[0];
for (sample = 0; sample<samples_per_update; sample++)
{
boost::this_thread::sleep_for(boost::chrono::milliseconds(update_interval_ms));
if (attr_type == 3)
get_register_data(address, ( ((int*) out)+sample) );
else {
switch (data_type) {
case 0:
get_attribute_data(attribute, ((double *)out+sample) );
break;
case 1:
get_attribute_data(attribute, ((float *)out+sample) );
break;
case 2:
get_attribute_data(attribute, ((long long *)out+sample) );
break;
case 3:
get_attribute_data(attribute, ((int *)out+sample) );
break;
case 4:
get_attribute_data(attribute, ((uint8_t *)out+sample) );
break;
}
}
}
// Tell runtime system how many output items we produced.
return samples_per_update;
}
} /* namespace iio */
} /* namespace gr */
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