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/* -*- c++ -*- */
/*
* Copyright 2007 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio 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.
*
* GNU Radio 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <usrp_tx.h>
#include <iostream>
#include <usb.h>
#include <mb_class_registry.h>
#include <usrp_inband_usb_packet.h>
#include <fpga_regs_common.h>
#include <usrp_standard.h>
#include <stdio.h>
#include <symbols_usrp_tx_cs.h>
typedef usrp_inband_usb_packet transport_pkt;
static const bool verbose = false;
usrp_tx::usrp_tx(mb_runtime *rt, const std::string &instance_name, pmt_t user_arg)
: mb_mblock(rt, instance_name, user_arg),
d_disk_write(false)
{
d_cs = define_port("cs", "usrp-tx-cs", true, mb_port::EXTERNAL);
//d_disk_write=true;
if(d_disk_write) {
d_ofile.open("tx_data.dat",std::ios::binary|std::ios::out);
d_cs_ofile.open("tx_cs.dat",std::ios::binary|std::ios::out);
}
}
usrp_tx::~usrp_tx()
{
if(d_disk_write) {
d_ofile.close();
d_cs_ofile.close();
}
}
void
usrp_tx::initial_transition()
{
}
/*!
* \brief Handles incoming signals to to the m-block, wihch should only ever be
* a single message: cmd-usrp-tx-write.
*/
void
usrp_tx::handle_message(mb_message_sptr msg)
{
pmt_t event = msg->signal();
pmt_t port_id = msg->port_id();
pmt_t data = msg->data();
// Theoretically only have 1 message to ever expect, but
// want to make sure its at least what we want
if(pmt_eq(port_id, d_cs->port_symbol())) {
if(pmt_eqv(event, s_cmd_usrp_tx_write))
write(data);
}
}
/*!
* \brief Performs the actual writing of data to the USB bus, called by
* handle_message() when a cmd-usrp-tx-write signal is received.
*
* The \p data parameter is a PMT list which contains three mandatory elements,
* in the following order: an invocation handle, a channel, and a uniform vector
* of memory which contains the packets to be written to the bus.
*/
void
usrp_tx::write(pmt_t data)
{
pmt_t invocation_handle = pmt_nth(0, data);
pmt_t channel = pmt_nth(1, data);
pmt_t v_packets = pmt_nth(2, data);
d_utx = boost::any_cast<usrp_standard_tx *>(pmt_any_ref(pmt_nth(3, data)));
size_t n_bytes;
bool underrun; // this will need to go, as it is taken care of in the packet headers
transport_pkt *pkts = (transport_pkt *) pmt_u8vector_writable_elements(v_packets, n_bytes);
int ret = d_utx->write (pkts, n_bytes, &underrun);
if (0 && underrun)
fprintf(stderr, "uU");
if (ret == (int) n_bytes) {
if (verbose)
std::cout << "[usrp_server] Write of " << n_bytes << " successful\n";
// need to respond with the channel so the USRP server knows who to forward the result of
// the write to by looking up the owner of the channel
d_cs->send(s_response_usrp_tx_write,
pmt_list3(invocation_handle, PMT_T, channel));
}
else {
if (verbose)
std::cout << "[usrp_server] Error writing " << n_bytes << " bytes to USB bus\n";
d_cs->send(s_response_usrp_tx_write,
pmt_list3(invocation_handle, PMT_F, channel));
}
long n_packets =
static_cast<long>(std::ceil(n_bytes / (double)transport_pkt::max_pkt_size()));
for(int i=0; i < n_packets; i++) {
if(d_disk_write) {
if(pkts[i].chan() == CONTROL_CHAN)
d_cs_ofile.write((const char *)&pkts[i], transport_pkt::max_pkt_size());
else
d_ofile.write((const char *)&pkts[i], transport_pkt::max_pkt_size());
d_cs_ofile.flush();
d_ofile.flush();
}
}
return;
}
REGISTER_MBLOCK_CLASS(usrp_tx);
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