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//
// Copyright 2010 Ettus Research LLC
//
// This program 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 of the License, or
// (at your option) any later version.
//
// This program 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 program. If not, see <http://www.gnu.org/licenses/>.
//
#include <boost/format.hpp>
#include <boost/bind.hpp>
#include <uhd/utils.hpp>
#include <iostream>
#include "usrp2_impl.hpp"
using namespace uhd;
using namespace uhd::usrp;
using namespace uhd::transport;
namespace asio = boost::asio;
STATIC_BLOCK(register_device){
device::register_device(&usrp2::discover, &usrp2::make);
}
/***********************************************************************
* Discovery over the udp transport
**********************************************************************/
uhd::device_addrs_t usrp2::discover(const device_addr_t &hint){
device_addrs_t usrp2_addrs;
//create a udp transport to communicate
//TODO if an addr is not provided, search all interfaces?
std::string ctrl_port = boost::lexical_cast<std::string>(USRP2_UDP_CTRL_PORT);
udp_simple::sptr udp_transport = udp_simple::make_broadcast(
hint["addr"], ctrl_port
);
//send a hello control packet
usrp2_ctrl_data_t ctrl_data_out;
ctrl_data_out.id = htonl(USRP2_CTRL_ID_GIVE_ME_YOUR_IP_ADDR_BRO);
udp_transport->send(boost::asio::buffer(&ctrl_data_out, sizeof(ctrl_data_out)));
//loop and recieve until the timeout
while(true){
usrp2_ctrl_data_t ctrl_data_in;
size_t len = udp_transport->recv(asio::buffer(&ctrl_data_in, sizeof(ctrl_data_in)));
//std::cout << len << "\n";
if (len >= sizeof(usrp2_ctrl_data_t)){
//handle the received data
switch(ntohl(ctrl_data_in.id)){
case USRP2_CTRL_ID_THIS_IS_MY_IP_ADDR_DUDE:
//make a boost asio ipv4 with the raw addr in host byte order
boost::asio::ip::address_v4 ip_addr(ntohl(ctrl_data_in.data.ip_addr));
device_addr_t new_addr;
new_addr["name"] = "USRP2";
new_addr["transport"] = "udp";
new_addr["addr"] = ip_addr.to_string();
usrp2_addrs.push_back(new_addr);
//dont break here, it will exit the while loop
//just continue on to the next loop iteration
}
}
if (len == 0) break; //timeout
}
return usrp2_addrs;
}
/***********************************************************************
* Make
**********************************************************************/
template <class T> std::string num2str(T num){
return boost::lexical_cast<std::string>(num);
}
device::sptr usrp2::make(const device_addr_t &device_addr){
//create a control transport
udp_simple::sptr ctrl_transport = udp_simple::make_connected(
device_addr["addr"], num2str(USRP2_UDP_CTRL_PORT)
);
//create a data transport
udp_zero_copy::sptr data_transport = udp_zero_copy::make(
device_addr["addr"], num2str(USRP2_UDP_DATA_PORT)
);
//create the usrp2 implementation guts
return device::sptr(
new usrp2_impl(ctrl_transport, data_transport)
);
}
/***********************************************************************
* Structors
**********************************************************************/
usrp2_impl::usrp2_impl(
udp_simple::sptr ctrl_transport,
udp_zero_copy::sptr data_transport
){
_ctrl_transport = ctrl_transport;
_data_transport = data_transport;
//load the allowed decim/interp rates
//_USRP2_RATES = range(4, 128+1, 1) + range(130, 256+1, 2) + range(260, 512+1, 4)
_allowed_decim_and_interp_rates.clear();
for (size_t i = 4; i <= 128; i+=1){
_allowed_decim_and_interp_rates.push_back(i);
}
for (size_t i = 130; i <= 256; i+=2){
_allowed_decim_and_interp_rates.push_back(i);
}
for (size_t i = 260; i <= 512; i+=4){
_allowed_decim_and_interp_rates.push_back(i);
}
//init the mboard
mboard_init();
//init the ddc
init_ddc_config();
//init the duc
init_duc_config();
//initialize the clock configuration
init_clock_config();
//init the tx and rx dboards (do last)
dboard_init();
//init the send and recv io
io_init();
}
usrp2_impl::~usrp2_impl(void){
/* NOP */
}
/***********************************************************************
* Misc Access Methods
**********************************************************************/
double usrp2_impl::get_master_clock_freq(void){
return 100e6;
}
/***********************************************************************
* Control Send/Recv
**********************************************************************/
usrp2_ctrl_data_t usrp2_impl::ctrl_send_and_recv(const usrp2_ctrl_data_t &out_data){
boost::mutex::scoped_lock lock(_ctrl_mutex);
//fill in the seq number and send
usrp2_ctrl_data_t out_copy = out_data;
out_copy.seq = htonl(++_ctrl_seq_num);
_ctrl_transport->send(boost::asio::buffer(&out_copy, sizeof(usrp2_ctrl_data_t)));
//loop until we get the packet or timeout
while(true){
usrp2_ctrl_data_t in_data;
size_t len = _ctrl_transport->recv(asio::buffer(&in_data, sizeof(in_data)));
if (len >= sizeof(usrp2_ctrl_data_t) and ntohl(in_data.seq) == _ctrl_seq_num){
return in_data;
}
if (len == 0) break; //timeout
//didnt get seq or bad packet, continue looking...
}
throw std::runtime_error("usrp2 no control response");
}
/***********************************************************************
* Device Properties
**********************************************************************/
void usrp2_impl::get(const wax::obj &key_, wax::obj &val){
wax::obj key; std::string name;
boost::tie(key, name) = extract_named_prop(key_);
//handle the get request conditioned on the key
switch(wax::cast<device_prop_t>(key)){
case DEVICE_PROP_NAME:
val = std::string("usrp2 device");
return;
case DEVICE_PROP_MBOARD:
ASSERT_THROW(_mboards.has_key(name));
val = _mboards[name].get_link();
return;
case DEVICE_PROP_MBOARD_NAMES:
val = prop_names_t(_mboards.get_keys());
return;
case DEVICE_PROP_MAX_RX_SAMPLES:
val = size_t(_max_rx_samples_per_packet);
return;
case DEVICE_PROP_MAX_TX_SAMPLES:
val = size_t(_max_tx_samples_per_packet);
return;
}
}
void usrp2_impl::set(const wax::obj &, const wax::obj &){
throw std::runtime_error("Cannot set in usrp2 device");
}
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