1 files changed, 137 insertions, 0 deletions
diff --git a/usrp/host/lib/usrp_basic_libusb0.cc b/usrp/host/lib/usrp_basic_libusb0.cc
new file mode 100644
index 000000000..bd22d6ad4
--- /dev/null
+++ b/usrp/host/lib/usrp_basic_libusb0.cc
@@ -0,0 +1,137 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2003,2004,2008,2009 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 GNU Radio; 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 <usrp/usrp_basic.h>
+#include "usrp/usrp_prims.h"
+#include "usrp_interfaces.h"
+#include "fpga_regs_common.h"
+#include "fpga_regs_standard.h"
+#include "fusb.h"
+#include "db_boards.h"
+#include <usb.h>
+#include <stdexcept>
+#include <assert.h>
+#include <math.h>
+#include <ad9862.h>
+#include <string.h>
+#include <cstdio>
+
+using namespace ad9862;
+
+#define NELEM(x) (sizeof (x) / sizeof (x[0]))
+
+
+static const double POLLING_INTERVAL = 0.1;	// seconds
+
+
+//////////////////////////////////////////////////////////////////
+//
+//			usrp_basic
+//
+////////////////////////////////////////////////////////////////
+
+
+// Given:
+//   CLKIN = 64 MHz
+//   CLKSEL pin = high 
+//
+//   CLKOUT1 = CLKIN = 64 MHz
+//   CLKOUT2 = CLKIN = 64 MHz
+//   ADC is clocked at  64 MHz
+//   DAC is clocked at 128 MHz
+
+static unsigned char common_regs[] = {
+  REG_GENERAL,		0,
+  REG_DLL,		(DLL_DISABLE_INTERNAL_XTAL_OSC
+			 | DLL_MULT_2X
+			 | DLL_FAST),
+  REG_CLKOUT,		CLKOUT2_EQ_DLL_OVER_2,
+  REG_AUX_ADC_CLK,	AUX_ADC_CLK_CLK_OVER_4
+};
+
+
+usrp_basic::usrp_basic (int which_board, 
+			struct usb_dev_handle *
+			open_interface (struct usb_device *dev),
+			const std::string fpga_filename,
+			const std::string firmware_filename)
+  : d_udh (0),
+    d_usb_data_rate (16000000),	// SWAG, see below
+    d_bytes_per_poll ((int) (POLLING_INTERVAL * d_usb_data_rate)),
+    d_verbose (false), d_fpga_master_clock_freq(64000000), d_db(2)
+{
+  /*
+   * SWAG: Scientific Wild Ass Guess.
+   *
+   * d_usb_data_rate is used only to determine how often to poll for over- and under-runs.
+   * We defualt it to 1/2  of our best case.  Classes derived from usrp_basic (e.g., 
+   * usrp_standard_tx and usrp_standard_rx) call set_usb_data_rate() to tell us the
+   * actual rate.  This doesn't change our throughput, that's determined by the signal
+   * processing code in the FPGA (which we know nothing about), and the system limits
+   * determined by libusb, fusb_*, and the underlying drivers.
+   */
+  memset (d_fpga_shadows, 0, sizeof (d_fpga_shadows));
+
+  usrp_one_time_init ();
+
+  if (!usrp_load_standard_bits (which_board, false, fpga_filename, firmware_filename))
+    throw std::runtime_error ("usrp_basic/usrp_load_standard_bits");
+
+  struct usb_device *dev = usrp_find_device (which_board);
+  if (dev == 0){
+    fprintf (stderr, "usrp_basic: can't find usrp[%d]\n", which_board);
+    throw std::runtime_error ("usrp_basic/usrp_find_device");
+  }
+
+  if (!(usrp_usrp_p(dev) && usrp_hw_rev(dev) >= 1)){
+    fprintf (stderr, "usrp_basic: sorry, this code only works with USRP revs >= 1\n");
+    throw std::runtime_error ("usrp_basic/bad_rev");
+  }
+
+  if ((d_udh = open_interface (dev)) == 0)
+    throw std::runtime_error ("usrp_basic/open_interface");
+
+  // initialize registers that are common to rx and tx
+
+  if (!usrp_9862_write_many_all (d_udh, common_regs, sizeof (common_regs))){
+    fprintf (stderr, "usrp_basic: failed to init common AD9862 regs\n");
+    throw std::runtime_error ("usrp_basic/init_9862");
+  }
+
+  _write_fpga_reg (FR_MODE, 0);		// ensure we're in normal mode
+  _write_fpga_reg (FR_DEBUG_EN, 0);	// disable debug outputs
+}
+
+usrp_basic::~usrp_basic ()
+{
+  // shutdown_daughterboards();		// call from ~usrp_basic_{tx,rx}
+
+  d_db.resize(0); // forget db shared ptrs
+
+  if (d_udh)
+    usb_close (d_udh);
+}
+