3 * Copyright 2003,2004,2008 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
27 #include "usrp_basic.h"
28 #include "usrp_prims.h"
29 #include "usrp_interfaces.h"
30 #include "fpga_regs_common.h"
31 #include "fpga_regs_standard.h"
33 #include "db_boards.h"
42 using namespace ad9862;
44 #define NELEM(x) (sizeof (x) / sizeof (x[0]))
46 // These set the buffer size used for each end point using the fast
47 // usb interface. The kernel ends up locking down this much memory.
49 static const int FUSB_BUFFER_SIZE = fusb_sysconfig::default_buffer_size();
50 static const int FUSB_BLOCK_SIZE = fusb_sysconfig::max_block_size();
51 static const int FUSB_NBLOCKS = FUSB_BUFFER_SIZE / FUSB_BLOCK_SIZE;
54 static const double POLLING_INTERVAL = 0.1; // seconds
56 ////////////////////////////////////////////////////////////////
58 static struct usb_dev_handle *
59 open_rx_interface (struct usb_device *dev)
61 struct usb_dev_handle *udh = usrp_open_rx_interface (dev);
63 fprintf (stderr, "usrp_basic_rx: can't open rx interface\n");
69 static struct usb_dev_handle *
70 open_tx_interface (struct usb_device *dev)
72 struct usb_dev_handle *udh = usrp_open_tx_interface (dev);
74 fprintf (stderr, "usrp_basic_tx: can't open tx interface\n");
81 //////////////////////////////////////////////////////////////////
85 ////////////////////////////////////////////////////////////////
92 // These settings give us:
93 // CLKOUT1 = CLKIN = 64 MHz
94 // CLKOUT2 = CLKIN = 64 MHz
95 // ADC is clocked at 64 MHz
96 // DAC is clocked at 128 MHz
98 static unsigned char common_regs[] = {
100 REG_DLL, (DLL_DISABLE_INTERNAL_XTAL_OSC
103 REG_CLKOUT, CLKOUT2_EQ_DLL_OVER_2,
104 REG_AUX_ADC_CLK, AUX_ADC_CLK_CLK_OVER_4
108 usrp_basic::usrp_basic (int which_board,
109 struct usb_dev_handle *
110 open_interface (struct usb_device *dev),
111 const std::string fpga_filename,
112 const std::string firmware_filename)
114 d_usb_data_rate (16000000), // SWAG, see below
115 d_bytes_per_poll ((int) (POLLING_INTERVAL * d_usb_data_rate)),
116 d_verbose (false), d_fpga_master_clock_freq(64000000), d_db(2)
119 * SWAG: Scientific Wild Ass Guess.
121 * d_usb_data_rate is used only to determine how often to poll for over- and under-runs.
122 * We defualt it to 1/2 of our best case. Classes derived from usrp_basic (e.g.,
123 * usrp_standard_tx and usrp_standard_rx) call set_usb_data_rate() to tell us the
124 * actual rate. This doesn't change our throughput, that's determined by the signal
125 * processing code in the FPGA (which we know nothing about), and the system limits
126 * determined by libusb, fusb_*, and the underlying drivers.
128 memset (d_fpga_shadows, 0, sizeof (d_fpga_shadows));
130 usrp_one_time_init ();
132 if (!usrp_load_standard_bits (which_board, false, fpga_filename, firmware_filename))
133 throw std::runtime_error ("usrp_basic/usrp_load_standard_bits");
135 struct usb_device *dev = usrp_find_device (which_board);
137 fprintf (stderr, "usrp_basic: can't find usrp[%d]\n", which_board);
138 throw std::runtime_error ("usrp_basic/usrp_find_device");
141 if (!(usrp_usrp_p(dev) && usrp_hw_rev(dev) >= 1)){
142 fprintf (stderr, "usrp_basic: sorry, this code only works with USRP revs >= 1\n");
143 throw std::runtime_error ("usrp_basic/bad_rev");
146 if ((d_udh = open_interface (dev)) == 0)
147 throw std::runtime_error ("usrp_basic/open_interface");
149 // initialize registers that are common to rx and tx
151 if (!usrp_9862_write_many_all (d_udh, common_regs, sizeof (common_regs))){
152 fprintf (stderr, "usrp_basic: failed to init common AD9862 regs\n");
153 throw std::runtime_error ("usrp_basic/init_9862");
156 _write_fpga_reg (FR_MODE, 0); // ensure we're in normal mode
157 _write_fpga_reg (FR_DEBUG_EN, 0); // disable debug outputs
161 usrp_basic::shutdown_daughterboards()
163 // nuke d'boards before we close down USB in ~usrp_basic
164 // shutdown() will do any board shutdown while the USRP can still
166 for(size_t i = 0; i < d_db.size(); i++)
167 for(size_t j = 0; j < d_db[i].size(); j++)
168 d_db[i][j]->shutdown();
171 usrp_basic::~usrp_basic ()
173 // shutdown_daughterboards(); // call from ~usrp_basic_{tx,rx}
175 d_db.resize(0); // forget db shared ptrs
182 usrp_basic::init_db(usrp_basic_sptr u)
185 throw std::invalid_argument("u is not this");
187 d_db[0] = instantiate_dbs(d_dbid[0], u, 0);
188 d_db[1] = instantiate_dbs(d_dbid[1], u, 1);
191 std::vector<db_base_sptr>
192 usrp_basic::db(int which_side)
194 which_side &= 0x1; // clamp it to avoid any reporting any errors
195 return d_db[which_side];
199 usrp_basic::is_valid(const usrp_subdev_spec &ss)
201 if (ss.side < 0 || ss.side > 1)
204 if (ss.subdev < 0 || ss.subdev >= d_db[ss.side].size())
211 usrp_basic::selected_subdev(const usrp_subdev_spec &ss)
214 throw std::invalid_argument("invalid subdev_spec");
216 return d_db[ss.side][ss.subdev];
232 usrp_basic::set_usb_data_rate (int usb_data_rate)
234 d_usb_data_rate = usb_data_rate;
235 d_bytes_per_poll = (int) (usb_data_rate * POLLING_INTERVAL);
239 usrp_basic::_write_aux_dac (int slot, int which_dac, int value)
241 return usrp_write_aux_dac (d_udh, slot, which_dac, value);
245 usrp_basic::_read_aux_adc (int slot, int which_adc, int *value)
247 return usrp_read_aux_adc (d_udh, slot, which_adc, value);
251 usrp_basic::_read_aux_adc (int slot, int which_adc)
254 if (!_read_aux_adc (slot, which_adc, &value))
261 usrp_basic::write_eeprom (int i2c_addr, int eeprom_offset, const std::string buf)
263 return usrp_eeprom_write (d_udh, i2c_addr, eeprom_offset, buf.data (), buf.size ());
267 usrp_basic::read_eeprom (int i2c_addr, int eeprom_offset, int len)
274 if (!usrp_eeprom_read (d_udh, i2c_addr, eeprom_offset, buf, len))
277 return std::string (buf, len);
281 usrp_basic::write_i2c (int i2c_addr, const std::string buf)
283 return usrp_i2c_write (d_udh, i2c_addr, buf.data (), buf.size ());
287 usrp_basic::read_i2c (int i2c_addr, int len)
294 if (!usrp_i2c_read (d_udh, i2c_addr, buf, len))
297 return std::string (buf, len);
301 usrp_basic::serial_number()
303 return usrp_serial_number(d_udh);
306 // ----------------------------------------------------------------
309 usrp_basic::set_adc_offset (int which_adc, int offset)
311 if (which_adc < 0 || which_adc > 3)
314 return _write_fpga_reg (FR_ADC_OFFSET_0 + which_adc, offset);
318 usrp_basic::set_dac_offset (int which_dac, int offset, int offset_pin)
320 if (which_dac < 0 || which_dac > 3)
323 int which_codec = which_dac >> 1;
324 int tx_a = (which_dac & 0x1) == 0;
325 int lo = ((offset & 0x3) << 6) | (offset_pin & 0x1);
326 int hi = (offset >> 2);
330 ok = _write_9862 (which_codec, REG_TX_A_OFFSET_LO, lo);
331 ok &= _write_9862 (which_codec, REG_TX_A_OFFSET_HI, hi);
334 ok = _write_9862 (which_codec, REG_TX_B_OFFSET_LO, lo);
335 ok &= _write_9862 (which_codec, REG_TX_B_OFFSET_HI, hi);
341 usrp_basic::set_adc_buffer_bypass (int which_adc, bool bypass)
343 if (which_adc < 0 || which_adc > 3)
346 int codec = which_adc >> 1;
347 int reg = (which_adc & 1) == 0 ? REG_RX_A : REG_RX_B;
349 unsigned char cur_rx;
350 unsigned char cur_pwr_dn;
352 // If the input buffer is bypassed, we need to power it down too.
354 bool ok = _read_9862 (codec, reg, &cur_rx);
355 ok &= _read_9862 (codec, REG_RX_PWR_DN, &cur_pwr_dn);
360 cur_rx |= RX_X_BYPASS_INPUT_BUFFER;
361 cur_pwr_dn |= ((which_adc & 1) == 0) ? RX_PWR_DN_BUF_A : RX_PWR_DN_BUF_B;
364 cur_rx &= ~RX_X_BYPASS_INPUT_BUFFER;
365 cur_pwr_dn &= ~(((which_adc & 1) == 0) ? RX_PWR_DN_BUF_A : RX_PWR_DN_BUF_B);
368 ok &= _write_9862 (codec, reg, cur_rx);
369 ok &= _write_9862 (codec, REG_RX_PWR_DN, cur_pwr_dn);
374 usrp_basic::set_dc_offset_cl_enable(int bits, int mask)
376 return _write_fpga_reg(FR_DC_OFFSET_CL_EN,
377 (d_fpga_shadows[FR_DC_OFFSET_CL_EN] & ~mask) | (bits & mask));
380 // ----------------------------------------------------------------
383 usrp_basic::_write_fpga_reg (int regno, int value)
386 fprintf (stdout, "_write_fpga_reg(%3d, 0x%08x)\n", regno, value);
390 if (regno >= 0 && regno < MAX_REGS)
391 d_fpga_shadows[regno] = value;
393 return usrp_write_fpga_reg (d_udh, regno, value);
397 usrp_basic::_write_fpga_reg_masked (int regno, int value, int mask)
399 //Only use this for registers who actually use a mask in the verilog firmware, like FR_RX_MASTER_SLAVE
400 //value is a 16 bits value and mask is a 16 bits mask
402 fprintf (stdout, "_write_fpga_reg_masked(%3d, 0x%04x,0x%04x)\n", regno, value, mask);
406 if (regno >= 0 && regno < MAX_REGS)
407 d_fpga_shadows[regno] = value;
409 return usrp_write_fpga_reg (d_udh, regno, (value & 0xffff) | ((mask & 0xffff)<<16));
414 usrp_basic::_read_fpga_reg (int regno, int *value)
416 return usrp_read_fpga_reg (d_udh, regno, value);
420 usrp_basic::_read_fpga_reg (int regno)
423 if (!_read_fpga_reg (regno, &value))
429 usrp_basic::_write_9862 (int which_codec, int regno, unsigned char value)
432 // FIXME really want to enable logging in usrp_prims:usrp_9862_write
433 fprintf(stdout, "_write_9862(codec = %d, regno = %2d, val = 0x%02x)\n", which_codec, regno, value);
437 return usrp_9862_write (d_udh, which_codec, regno, value);
442 usrp_basic::_read_9862 (int which_codec, int regno, unsigned char *value) const
444 return usrp_9862_read (d_udh, which_codec, regno, value);
448 usrp_basic::_read_9862 (int which_codec, int regno) const
451 if (!_read_9862 (which_codec, regno, &value))
457 usrp_basic::_write_spi (int optional_header, int enables, int format, std::string buf)
459 return usrp_spi_write (d_udh, optional_header, enables, format,
460 buf.data(), buf.size());
464 usrp_basic::_read_spi (int optional_header, int enables, int format, int len)
471 if (!usrp_spi_read (d_udh, optional_header, enables, format, buf, len))
474 return std::string (buf, len);
479 usrp_basic::_set_led (int which_led, bool on)
481 return usrp_set_led (d_udh, which_led, on);
485 usrp_basic::write_atr_tx_delay(int value)
487 return _write_fpga_reg(FR_ATR_TX_DELAY, value);
491 usrp_basic::write_atr_rx_delay(int value)
493 return _write_fpga_reg(FR_ATR_RX_DELAY, value);
497 * ----------------------------------------------------------------
498 * Routines to access and control daughterboard specific i/o
499 * ----------------------------------------------------------------
502 slot_id_to_oe_reg (int slot_id)
504 static int reg[4] = { FR_OE_0, FR_OE_1, FR_OE_2, FR_OE_3 };
505 assert (0 <= slot_id && slot_id < 4);
510 slot_id_to_io_reg (int slot_id)
512 static int reg[4] = { FR_IO_0, FR_IO_1, FR_IO_2, FR_IO_3 };
513 assert (0 <= slot_id && slot_id < 4);
518 slot_id_to_refclk_reg(int slot_id)
520 static int reg[4] = { FR_TX_A_REFCLK, FR_RX_A_REFCLK, FR_TX_B_REFCLK, FR_RX_B_REFCLK };
521 assert (0 <= slot_id && slot_id < 4);
526 slot_id_to_atr_mask_reg(int slot_id)
528 static int reg[4] = { FR_ATR_MASK_0, FR_ATR_MASK_1, FR_ATR_MASK_2, FR_ATR_MASK_3 };
529 assert (0 <= slot_id && slot_id < 4);
534 slot_id_to_atr_txval_reg(int slot_id)
536 static int reg[4] = { FR_ATR_TXVAL_0, FR_ATR_TXVAL_1, FR_ATR_TXVAL_2, FR_ATR_TXVAL_3 };
537 assert (0 <= slot_id && slot_id < 4);
542 slot_id_to_atr_rxval_reg(int slot_id)
544 static int reg[4] = { FR_ATR_RXVAL_0, FR_ATR_RXVAL_1, FR_ATR_RXVAL_2, FR_ATR_RXVAL_3 };
545 assert (0 <= slot_id && slot_id < 4);
550 to_slot(txrx_t txrx, int which_side)
556 return ((which_side & 0x1) << 1) | ((txrx & 0x1) == C_RX);
560 usrp_basic::common_set_pga(txrx_t txrx, int which_amp, double gain)
562 if (which_amp < 0 || which_amp > 3)
565 gain = std::min(common_pga_max(txrx),
566 std::max(common_pga_min(txrx), gain));
568 int codec = which_amp >> 1;
569 int int_gain = (int) rint((gain - common_pga_min(txrx)) / common_pga_db_per_step(txrx));
571 if (txrx == C_TX){ // 0 and 1 are same, as are 2 and 3
572 return _write_9862(codec, REG_TX_PGA, int_gain);
575 int reg = (which_amp & 1) == 0 ? REG_RX_A : REG_RX_B;
577 // read current value to get input buffer bypass flag.
578 unsigned char cur_rx;
579 if (!_read_9862(codec, reg, &cur_rx))
582 cur_rx = (cur_rx & RX_X_BYPASS_INPUT_BUFFER) | (int_gain & 0x7f);
583 return _write_9862(codec, reg, cur_rx);
588 usrp_basic::common_pga(txrx_t txrx, int which_amp) const
590 if (which_amp < 0 || which_amp > 3)
594 int codec = which_amp >> 1;
596 bool ok = _read_9862 (codec, REG_TX_PGA, &v);
600 return (pga_db_per_step() * v) + pga_min();
603 int codec = which_amp >> 1;
604 int reg = (which_amp & 1) == 0 ? REG_RX_A : REG_RX_B;
606 bool ok = _read_9862 (codec, reg, &v);
610 return (pga_db_per_step() * (v & 0x1f)) + pga_min();
615 usrp_basic::common_pga_min(txrx_t txrx) const
624 usrp_basic::common_pga_max(txrx_t txrx) const
633 usrp_basic::common_pga_db_per_step(txrx_t txrx) const
642 usrp_basic::_common_write_oe(txrx_t txrx, int which_side, int value, int mask)
644 if (! (0 <= which_side && which_side <= 1))
647 return _write_fpga_reg(slot_id_to_oe_reg(to_slot(txrx, which_side)),
648 (mask << 16) | (value & 0xffff));
652 usrp_basic::common_write_io(txrx_t txrx, int which_side, int value, int mask)
654 if (! (0 <= which_side && which_side <= 1))
657 return _write_fpga_reg(slot_id_to_io_reg(to_slot(txrx, which_side)),
658 (mask << 16) | (value & 0xffff));
662 usrp_basic::common_read_io(txrx_t txrx, int which_side, int *value)
664 if (! (0 <= which_side && which_side <= 1))
668 int reg = which_side + 1; // FIXME, *very* magic number (fix in serial_io.v)
669 bool ok = _read_fpga_reg(reg, &t);
674 *value = t & 0xffff; // FIXME, more magic
678 *value = (t >> 16) & 0xffff; // FIXME, more magic
684 usrp_basic::common_read_io(txrx_t txrx, int which_side)
687 if (!common_read_io(txrx, which_side, &value))
693 usrp_basic::common_write_refclk(txrx_t txrx, int which_side, int value)
695 if (! (0 <= which_side && which_side <= 1))
698 return _write_fpga_reg(slot_id_to_refclk_reg(to_slot(txrx, which_side)),
703 usrp_basic::common_write_atr_mask(txrx_t txrx, int which_side, int value)
705 if (! (0 <= which_side && which_side <= 1))
708 return _write_fpga_reg(slot_id_to_atr_mask_reg(to_slot(txrx, which_side)),
713 usrp_basic::common_write_atr_txval(txrx_t txrx, int which_side, int value)
715 if (! (0 <= which_side && which_side <= 1))
718 return _write_fpga_reg(slot_id_to_atr_txval_reg(to_slot(txrx, which_side)),
723 usrp_basic::common_write_atr_rxval(txrx_t txrx, int which_side, int value)
725 if (! (0 <= which_side && which_side <= 1))
728 return _write_fpga_reg(slot_id_to_atr_rxval_reg(to_slot(txrx, which_side)),
733 usrp_basic::common_write_aux_dac(txrx_t txrx, int which_side, int which_dac, int value)
735 return _write_aux_dac(to_slot(txrx, which_side), which_dac, value);
739 usrp_basic::common_read_aux_adc(txrx_t txrx, int which_side, int which_adc, int *value)
741 return _read_aux_adc(to_slot(txrx, which_side), which_adc, value);
745 usrp_basic::common_read_aux_adc(txrx_t txrx, int which_side, int which_adc)
747 return _read_aux_adc(to_slot(txrx, which_side), which_adc);
751 ////////////////////////////////////////////////////////////////
755 ////////////////////////////////////////////////////////////////
757 static unsigned char rx_init_regs[] = {
759 REG_RX_A, 0, // minimum gain = 0x00 (max gain = 0x14)
760 REG_RX_B, 0, // minimum gain = 0x00 (max gain = 0x14)
761 REG_RX_MISC, (RX_MISC_HS_DUTY_CYCLE | RX_MISC_CLK_DUTY),
762 REG_RX_IF, (RX_IF_USE_CLKOUT1
764 REG_RX_DIGITAL, (RX_DIGITAL_2_CHAN)
768 usrp_basic_rx::usrp_basic_rx (int which_board, int fusb_block_size, int fusb_nblocks,
769 const std::string fpga_filename,
770 const std::string firmware_filename
772 : usrp_basic (which_board, open_rx_interface, fpga_filename, firmware_filename),
773 d_devhandle (0), d_ephandle (0),
774 d_bytes_seen (0), d_first_read (true),
777 // initialize rx specific registers
779 if (!usrp_9862_write_many_all (d_udh, rx_init_regs, sizeof (rx_init_regs))){
780 fprintf (stderr, "usrp_basic_rx: failed to init AD9862 RX regs\n");
781 throw std::runtime_error ("usrp_basic_rx/init_9862");
785 // FIXME power down 2nd codec rx path
786 usrp_9862_write (d_udh, 1, REG_RX_PWR_DN, 0x1); // power down everything
789 // Reset the rx path and leave it disabled.
790 set_rx_enable (false);
791 usrp_set_fpga_rx_reset (d_udh, true);
792 usrp_set_fpga_rx_reset (d_udh, false);
794 set_fpga_rx_sample_rate_divisor (2); // usually correct
796 set_dc_offset_cl_enable(0xf, 0xf); // enable DC offset removal control loops
798 probe_rx_slots (false);
800 //d_db[0] = instantiate_dbs(d_dbid[0], this, 0);
801 //d_db[1] = instantiate_dbs(d_dbid[1], this, 1);
803 // check fusb buffering parameters
805 if (fusb_block_size < 0 || fusb_block_size > FUSB_BLOCK_SIZE)
806 throw std::out_of_range ("usrp_basic_rx: invalid fusb_block_size");
808 if (fusb_nblocks < 0)
809 throw std::out_of_range ("usrp_basic_rx: invalid fusb_nblocks");
811 if (fusb_block_size == 0)
812 fusb_block_size = fusb_sysconfig::default_block_size();
814 if (fusb_nblocks == 0)
815 fusb_nblocks = std::max (1, FUSB_BUFFER_SIZE / fusb_block_size);
817 d_devhandle = fusb_sysconfig::make_devhandle (d_udh);
818 d_ephandle = d_devhandle->make_ephandle (USRP_RX_ENDPOINT, true,
819 fusb_block_size, fusb_nblocks);
821 write_atr_mask(0, 0); // zero Rx A Auto Transmit/Receive regs
822 write_atr_txval(0, 0);
823 write_atr_rxval(0, 0);
824 write_atr_mask(1, 0); // zero Rx B Auto Transmit/Receive regs
825 write_atr_txval(1, 0);
826 write_atr_rxval(1, 0);
829 static unsigned char rx_fini_regs[] = {
830 REG_RX_PWR_DN, 0x1 // power down everything
833 usrp_basic_rx::~usrp_basic_rx ()
835 if (!set_rx_enable (false)){
836 fprintf (stderr, "usrp_basic_rx: set_fpga_rx_enable failed\n");
844 if (!usrp_9862_write_many_all (d_udh, rx_fini_regs, sizeof (rx_fini_regs))){
845 fprintf (stderr, "usrp_basic_rx: failed to fini AD9862 RX regs\n");
848 shutdown_daughterboards();
853 usrp_basic_rx::start ()
855 if (!usrp_basic::start ()) // invoke parent's method
858 // fire off reads before asserting rx_enable
860 if (!d_ephandle->start ()){
861 fprintf (stderr, "usrp_basic_rx: failed to start end point streaming");
866 if (!set_rx_enable (true)){
867 fprintf (stderr, "usrp_basic_rx: set_rx_enable failed\n");
876 usrp_basic_rx::stop ()
878 bool ok = usrp_basic::stop();
880 if (!set_rx_enable(false)){
881 fprintf (stderr, "usrp_basic_rx: set_rx_enable(false) failed\n");
886 if (!d_ephandle->stop()){
887 fprintf (stderr, "usrp_basic_rx: failed to stop end point streaming");
896 usrp_basic_rx::make (int which_board, int fusb_block_size, int fusb_nblocks,
897 const std::string fpga_filename,
898 const std::string firmware_filename)
900 usrp_basic_rx *u = 0;
903 u = new usrp_basic_rx (which_board, fusb_block_size, fusb_nblocks,
904 fpga_filename, firmware_filename);
916 usrp_basic_rx::set_fpga_rx_sample_rate_divisor (unsigned int div)
918 return _write_fpga_reg (FR_RX_SAMPLE_RATE_DIV, div - 1);
923 * \brief read data from the D/A's via the FPGA.
924 * \p len must be a multiple of 512 bytes.
926 * \returns the number of bytes read, or -1 on error.
928 * If overrun is non-NULL it will be set true iff an RX overrun is detected.
931 usrp_basic_rx::read (void *buf, int len, bool *overrun)
938 if (len < 0 || (len % 512) != 0){
939 fprintf (stderr, "usrp_basic_rx::read: invalid length = %d\n", len);
943 r = d_ephandle->read (buf, len);
948 * In many cases, the FPGA reports an rx overrun right after we
949 * enable the Rx path. If this is our first read, check for the
950 * overrun to clear the condition, then ignore the result.
952 if (0 && d_first_read){ // FIXME
953 d_first_read = false;
955 usrp_check_rx_overrun (d_udh, &bogus_overrun);
958 if (overrun != 0 && d_bytes_seen >= d_bytes_per_poll){
960 if (!usrp_check_rx_overrun (d_udh, overrun)){
961 fprintf (stderr, "usrp_basic_rx: usrp_check_rx_overrun failed\n");
970 usrp_basic_rx::set_rx_enable (bool on)
973 return usrp_set_fpga_rx_enable (d_udh, on);
976 // conditional disable, return prev state
978 usrp_basic_rx::disable_rx ()
980 bool enabled = rx_enable ();
982 set_rx_enable (false);
988 usrp_basic_rx::restore_rx (bool on)
990 if (on != rx_enable ())
995 usrp_basic_rx::probe_rx_slots (bool verbose)
997 struct usrp_dboard_eeprom eeprom;
998 static int slot_id_map[2] = { SLOT_RX_A, SLOT_RX_B };
999 static const char *slot_name[2] = { "RX d'board A", "RX d'board B" };
1001 for (int i = 0; i < 2; i++){
1002 int slot_id = slot_id_map [i];
1003 const char *msg = 0;
1004 usrp_dbeeprom_status_t s = usrp_read_dboard_eeprom (d_udh, slot_id, &eeprom);
1008 d_dbid[i] = eeprom.id;
1009 msg = usrp_dbid_to_string (eeprom.id).c_str ();
1010 set_adc_offset (2*i+0, eeprom.offset[0]);
1011 set_adc_offset (2*i+1, eeprom.offset[1]);
1012 _write_fpga_reg (slot_id_to_oe_reg(slot_id), (0xffff << 16) | eeprom.oe);
1013 _write_fpga_reg (slot_id_to_io_reg(slot_id), (0xffff << 16) | 0x0000);
1016 case UDBE_NO_EEPROM:
1019 _write_fpga_reg (slot_id_to_oe_reg(slot_id), (0xffff << 16) | 0x0000);
1020 _write_fpga_reg (slot_id_to_io_reg(slot_id), (0xffff << 16) | 0x0000);
1023 case UDBE_INVALID_EEPROM:
1025 msg = "Invalid EEPROM contents";
1026 _write_fpga_reg (slot_id_to_oe_reg(slot_id), (0xffff << 16) | 0x0000);
1027 _write_fpga_reg (slot_id_to_io_reg(slot_id), (0xffff << 16) | 0x0000);
1037 fprintf (stderr, "%s: %s\n", slot_name[i], msg);
1043 usrp_basic_rx::set_pga (int which_amp, double gain)
1045 return common_set_pga(C_RX, which_amp, gain);
1049 usrp_basic_rx::pga(int which_amp) const
1051 return common_pga(C_RX, which_amp);
1055 usrp_basic_rx::pga_min() const
1057 return common_pga_min(C_RX);
1061 usrp_basic_rx::pga_max() const
1063 return common_pga_max(C_RX);
1067 usrp_basic_rx::pga_db_per_step() const
1069 return common_pga_db_per_step(C_RX);
1073 usrp_basic_rx::_write_oe (int which_side, int value, int mask)
1075 return _common_write_oe(C_RX, which_side, value, mask);
1079 usrp_basic_rx::write_io (int which_side, int value, int mask)
1081 return common_write_io(C_RX, which_side, value, mask);
1085 usrp_basic_rx::read_io (int which_side, int *value)
1087 return common_read_io(C_RX, which_side, value);
1091 usrp_basic_rx::read_io (int which_side)
1093 return common_read_io(C_RX, which_side);
1097 usrp_basic_rx::write_refclk(int which_side, int value)
1099 return common_write_refclk(C_RX, which_side, value);
1103 usrp_basic_rx::write_atr_mask(int which_side, int value)
1105 return common_write_atr_mask(C_RX, which_side, value);
1109 usrp_basic_rx::write_atr_txval(int which_side, int value)
1111 return common_write_atr_txval(C_RX, which_side, value);
1115 usrp_basic_rx::write_atr_rxval(int which_side, int value)
1117 return common_write_atr_rxval(C_RX, which_side, value);
1121 usrp_basic_rx::write_aux_dac (int which_side, int which_dac, int value)
1123 return common_write_aux_dac(C_RX, which_side, which_dac, value);
1127 usrp_basic_rx::read_aux_adc (int which_side, int which_adc, int *value)
1129 return common_read_aux_adc(C_RX, which_side, which_adc, value);
1133 usrp_basic_rx::read_aux_adc (int which_side, int which_adc)
1135 return common_read_aux_adc(C_RX, which_side, which_adc);
1139 usrp_basic_rx::block_size () const { return d_ephandle->block_size(); }
1141 ////////////////////////////////////////////////////////////////
1145 ////////////////////////////////////////////////////////////////
1149 // DAC input rate 64 MHz interleaved for a total input rate of 128 MHz
1150 // DAC input is latched on rising edge of CLKOUT2
1153 // coarse modulator disabled
1156 static unsigned char tx_init_regs[] = {
1158 REG_TX_A_OFFSET_LO, 0,
1159 REG_TX_A_OFFSET_HI, 0,
1160 REG_TX_B_OFFSET_LO, 0,
1161 REG_TX_B_OFFSET_HI, 0,
1162 REG_TX_A_GAIN, (TX_X_GAIN_COARSE_FULL | 0),
1163 REG_TX_B_GAIN, (TX_X_GAIN_COARSE_FULL | 0),
1164 REG_TX_PGA, 0xff, // maximum gain (0 dB)
1166 REG_TX_IF, (TX_IF_USE_CLKOUT1
1170 | TX_IF_INTERLEAVED),
1171 REG_TX_DIGITAL, (TX_DIGITAL_2_DATA_PATHS
1172 | TX_DIGITAL_INTERPOLATE_4X),
1173 REG_TX_MODULATOR, (TX_MODULATOR_DISABLE_NCO
1174 | TX_MODULATOR_COARSE_MODULATION_NONE),
1175 REG_TX_NCO_FTW_7_0, 0,
1176 REG_TX_NCO_FTW_15_8, 0,
1177 REG_TX_NCO_FTW_23_16, 0
1180 usrp_basic_tx::usrp_basic_tx (int which_board, int fusb_block_size, int fusb_nblocks,
1181 const std::string fpga_filename,
1182 const std::string firmware_filename)
1183 : usrp_basic (which_board, open_tx_interface, fpga_filename, firmware_filename),
1184 d_devhandle (0), d_ephandle (0),
1185 d_bytes_seen (0), d_first_write (true),
1188 if (!usrp_9862_write_many_all (d_udh, tx_init_regs, sizeof (tx_init_regs))){
1189 fprintf (stderr, "usrp_basic_tx: failed to init AD9862 TX regs\n");
1190 throw std::runtime_error ("usrp_basic_tx/init_9862");
1194 // FIXME power down 2nd codec tx path
1195 usrp_9862_write (d_udh, 1, REG_TX_PWR_DN,
1196 (TX_PWR_DN_TX_DIGITAL
1197 | TX_PWR_DN_TX_ANALOG_BOTH));
1200 // Reset the tx path and leave it disabled.
1201 set_tx_enable (false);
1202 usrp_set_fpga_tx_reset (d_udh, true);
1203 usrp_set_fpga_tx_reset (d_udh, false);
1205 set_fpga_tx_sample_rate_divisor (4); // we're using interp x4
1207 probe_tx_slots (false);
1209 //d_db[0] = instantiate_dbs(d_dbid[0], this, 0);
1210 //d_db[1] = instantiate_dbs(d_dbid[1], this, 1);
1212 // check fusb buffering parameters
1214 if (fusb_block_size < 0 || fusb_block_size > FUSB_BLOCK_SIZE)
1215 throw std::out_of_range ("usrp_basic_rx: invalid fusb_block_size");
1217 if (fusb_nblocks < 0)
1218 throw std::out_of_range ("usrp_basic_rx: invalid fusb_nblocks");
1220 if (fusb_block_size == 0)
1221 fusb_block_size = FUSB_BLOCK_SIZE;
1223 if (fusb_nblocks == 0)
1224 fusb_nblocks = std::max (1, FUSB_BUFFER_SIZE / fusb_block_size);
1226 d_devhandle = fusb_sysconfig::make_devhandle (d_udh);
1227 d_ephandle = d_devhandle->make_ephandle (USRP_TX_ENDPOINT, false,
1228 fusb_block_size, fusb_nblocks);
1230 write_atr_mask(0, 0); // zero Tx A Auto Transmit/Receive regs
1231 write_atr_txval(0, 0);
1232 write_atr_rxval(0, 0);
1233 write_atr_mask(1, 0); // zero Tx B Auto Transmit/Receive regs
1234 write_atr_txval(1, 0);
1235 write_atr_rxval(1, 0);
1239 static unsigned char tx_fini_regs[] = {
1240 REG_TX_PWR_DN, (TX_PWR_DN_TX_DIGITAL
1241 | TX_PWR_DN_TX_ANALOG_BOTH),
1242 REG_TX_MODULATOR, (TX_MODULATOR_DISABLE_NCO
1243 | TX_MODULATOR_COARSE_MODULATION_NONE)
1246 usrp_basic_tx::~usrp_basic_tx ()
1248 d_ephandle->stop ();
1252 if (!usrp_9862_write_many_all (d_udh, tx_fini_regs, sizeof (tx_fini_regs))){
1253 fprintf (stderr, "usrp_basic_tx: failed to fini AD9862 TX regs\n");
1256 shutdown_daughterboards();
1260 usrp_basic_tx::start ()
1262 if (!usrp_basic::start ())
1265 if (!set_tx_enable (true)){
1266 fprintf (stderr, "usrp_basic_tx: set_tx_enable failed\n");
1271 if (!d_ephandle->start ()){
1272 fprintf (stderr, "usrp_basic_tx: failed to start end point streaming");
1281 usrp_basic_tx::stop ()
1283 bool ok = usrp_basic::stop ();
1285 if (!d_ephandle->stop ()){
1286 fprintf (stderr, "usrp_basic_tx: failed to stop end point streaming");
1291 if (!set_tx_enable (false)){
1292 fprintf (stderr, "usrp_basic_tx: set_tx_enable(false) failed\n");
1301 usrp_basic_tx::make (int which_board, int fusb_block_size, int fusb_nblocks,
1302 const std::string fpga_filename,
1303 const std::string firmware_filename)
1305 usrp_basic_tx *u = 0;
1308 u = new usrp_basic_tx (which_board, fusb_block_size, fusb_nblocks,
1309 fpga_filename, firmware_filename);
1321 usrp_basic_tx::set_fpga_tx_sample_rate_divisor (unsigned int div)
1323 return _write_fpga_reg (FR_TX_SAMPLE_RATE_DIV, div - 1);
1327 * \brief Write data to the A/D's via the FPGA.
1329 * \p len must be a multiple of 512 bytes.
1330 * \returns number of bytes written or -1 on error.
1332 * if \p underrun is non-NULL, it will be set to true iff
1333 * a transmit underrun condition is detected.
1336 usrp_basic_tx::write (const void *buf, int len, bool *underrun)
1343 if (len < 0 || (len % 512) != 0){
1344 fprintf (stderr, "usrp_basic_tx::write: invalid length = %d\n", len);
1348 r = d_ephandle->write (buf, len);
1353 * In many cases, the FPGA reports an tx underrun right after we
1354 * enable the Tx path. If this is our first write, check for the
1355 * underrun to clear the condition, then ignore the result.
1357 if (d_first_write && d_bytes_seen >= 4 * FUSB_BLOCK_SIZE){
1358 d_first_write = false;
1359 bool bogus_underrun;
1360 usrp_check_tx_underrun (d_udh, &bogus_underrun);
1363 if (underrun != 0 && d_bytes_seen >= d_bytes_per_poll){
1365 if (!usrp_check_tx_underrun (d_udh, underrun)){
1366 fprintf (stderr, "usrp_basic_tx: usrp_check_tx_underrun failed\n");
1375 usrp_basic_tx::wait_for_completion ()
1377 d_ephandle->wait_for_completion ();
1381 usrp_basic_tx::set_tx_enable (bool on)
1384 // fprintf (stderr, "set_tx_enable %d\n", on);
1385 return usrp_set_fpga_tx_enable (d_udh, on);
1388 // conditional disable, return prev state
1390 usrp_basic_tx::disable_tx ()
1392 bool enabled = tx_enable ();
1394 set_tx_enable (false);
1400 usrp_basic_tx::restore_tx (bool on)
1402 if (on != tx_enable ())
1407 usrp_basic_tx::probe_tx_slots (bool verbose)
1409 struct usrp_dboard_eeprom eeprom;
1410 static int slot_id_map[2] = { SLOT_TX_A, SLOT_TX_B };
1411 static const char *slot_name[2] = { "TX d'board A", "TX d'board B" };
1413 for (int i = 0; i < 2; i++){
1414 int slot_id = slot_id_map [i];
1415 const char *msg = 0;
1416 usrp_dbeeprom_status_t s = usrp_read_dboard_eeprom (d_udh, slot_id, &eeprom);
1420 d_dbid[i] = eeprom.id;
1421 msg = usrp_dbid_to_string (eeprom.id).c_str ();
1422 // FIXME, figure out interpretation of dc offset for TX d'boards
1423 // offset = (eeprom.offset[1] << 16) | (eeprom.offset[0] & 0xffff);
1424 _write_fpga_reg (slot_id_to_oe_reg(slot_id), (0xffff << 16) | eeprom.oe);
1425 _write_fpga_reg (slot_id_to_io_reg(slot_id), (0xffff << 16) | 0x0000);
1428 case UDBE_NO_EEPROM:
1431 _write_fpga_reg (slot_id_to_oe_reg(slot_id), (0xffff << 16) | 0x0000);
1432 _write_fpga_reg (slot_id_to_io_reg(slot_id), (0xffff << 16) | 0x0000);
1435 case UDBE_INVALID_EEPROM:
1437 msg = "Invalid EEPROM contents";
1438 _write_fpga_reg (slot_id_to_oe_reg(slot_id), (0xffff << 16) | 0x0000);
1439 _write_fpga_reg (slot_id_to_io_reg(slot_id), (0xffff << 16) | 0x0000);
1449 fprintf (stderr, "%s: %s\n", slot_name[i], msg);
1455 usrp_basic_tx::set_pga (int which_amp, double gain)
1457 return common_set_pga(C_TX, which_amp, gain);
1461 usrp_basic_tx::pga (int which_amp) const
1463 return common_pga(C_TX, which_amp);
1467 usrp_basic_tx::pga_min() const
1469 return common_pga_min(C_TX);
1473 usrp_basic_tx::pga_max() const
1475 return common_pga_max(C_TX);
1479 usrp_basic_tx::pga_db_per_step() const
1481 return common_pga_db_per_step(C_TX);
1485 usrp_basic_tx::_write_oe (int which_side, int value, int mask)
1487 return _common_write_oe(C_TX, which_side, value, mask);
1491 usrp_basic_tx::write_io (int which_side, int value, int mask)
1493 return common_write_io(C_TX, which_side, value, mask);
1497 usrp_basic_tx::read_io (int which_side, int *value)
1499 return common_read_io(C_TX, which_side, value);
1503 usrp_basic_tx::read_io (int which_side)
1505 return common_read_io(C_TX, which_side);
1509 usrp_basic_tx::write_refclk(int which_side, int value)
1511 return common_write_refclk(C_TX, which_side, value);
1515 usrp_basic_tx::write_atr_mask(int which_side, int value)
1517 return common_write_atr_mask(C_TX, which_side, value);
1521 usrp_basic_tx::write_atr_txval(int which_side, int value)
1523 return common_write_atr_txval(C_TX, which_side, value);
1527 usrp_basic_tx::write_atr_rxval(int which_side, int value)
1529 return common_write_atr_rxval(C_TX, which_side, value);
1533 usrp_basic_tx::write_aux_dac (int which_side, int which_dac, int value)
1535 return common_write_aux_dac(C_TX, which_side, which_dac, value);
1539 usrp_basic_tx::read_aux_adc (int which_side, int which_adc, int *value)
1541 return common_read_aux_adc(C_TX, which_side, which_adc, value);
1545 usrp_basic_tx::read_aux_adc (int which_side, int which_adc)
1547 return common_read_aux_adc(C_TX, which_side, which_adc);
1551 usrp_basic_tx::block_size () const { return d_ephandle->block_size(); }