Merged features/inband-usb r5224:6306 into trunk.

This is work-in-progress on inband signaling for the USRP1.


git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@6307 221aa14e-8319-0410-a670-987f0aec2ac5

1 files changed, 142 insertions, 0 deletions

diff --git a/usrp/host/lib/inband/usrp_rx.cc b/usrp/host/lib/inband/usrp_rx.cc
new file mode 100644
index 000000000..7344a6e89
--- /dev/null
+++ b/usrp/host/lib/inband/usrp_rx.cc
@@ -0,0 +1,142 @@
+/* -*- 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_rx.h>
+
+#include <usrp_standard.h>
+#include <iostream>
+#include <vector>
+#include <usb.h>
+#include <mb_class_registry.h>
+#include <usrp_inband_usb_packet.h>
+#include <fpga_regs_common.h>
+#include <stdio.h>
+
+#include <symbols_usrp_rx_cs.h>
+
+typedef usrp_inband_usb_packet transport_pkt;
+
+static const bool verbose = false;
+
+usrp_rx::usrp_rx(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-rx-cs", true, mb_port::EXTERNAL);
+  
+  //d_disk_write=true;
+  
+  if(d_disk_write) {
+    d_ofile.open("rx_data.dat",std::ios::binary|std::ios::out);
+    d_cs_ofile.open("rx_cs.dat",std::ios::binary|std::ios::out);
+  }
+
+}
+
+usrp_rx::~usrp_rx() 
+{
+  if(d_disk_write) {
+    d_ofile.close();
+    d_cs_ofile.close();
+  }
+}
+
+void 
+usrp_rx::initial_transition()
+{
+  
+}
+
+void
+usrp_rx::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_rx_start_reading))
+      read_and_respond(data);
+  }
+}
+
+void
+usrp_rx::read_and_respond(pmt_t data)
+{
+  size_t ignore;
+  bool underrun;
+  unsigned int n_read;
+  unsigned int pkt_size = sizeof(transport_pkt);
+
+  pmt_t invocation_handle = pmt_nth(0, data);
+
+  // Need the handle to the RX port to send responses, this is passed
+  // by the USRP interface m-block
+  d_urx = 
+    boost::any_cast<usrp_standard_rx *>(pmt_any_ref(pmt_nth(1, data)));
+
+  if(verbose)
+    std::cout << "[usrp_rx] Waiting for packets..\n";
+
+  // Read by 512 which is packet size and send them back up
+  while(1) {
+
+    pmt_t v_pkt = pmt_make_u8vector(pkt_size, 0);
+    transport_pkt *pkt = 
+      (transport_pkt *) pmt_u8vector_writeable_elements(v_pkt, ignore);
+
+    n_read = d_urx->read(pkt, pkt_size, &underrun);
+
+    if(n_read != pkt_size) {
+      std::cerr << "[usrp_rx] Error reading packet, shutting down\n";
+      d_cs->send(s_response_usrp_rx_read, 
+                 pmt_list3(PMT_NIL, PMT_F, PMT_NIL));
+      return;
+    }
+
+    if(underrun)
+      std::cout << "[usrp_rx] Underrun\n";
+
+    d_cs->send(s_response_usrp_rx_read, 
+               pmt_list3(PMT_NIL, PMT_T, v_pkt));
+    if(verbose)
+      std::cout << "[usrp_rx] Read 1 packet\n";
+    
+    if(d_disk_write) {
+      if(pkt->chan() == 0x1f)
+        d_cs_ofile.write((const char *)pkt, transport_pkt::max_pkt_size());
+      else
+        d_ofile.write((const char *)pkt, transport_pkt::max_pkt_size());
+
+      d_cs_ofile.flush();
+      d_ofile.flush();
+    }
+  }
+}
+
+REGISTER_MBLOCK_CLASS(usrp_rx);