2 // Copyright 2008,2009 Free Software Foundation, Inc.
4 // This file is part of GNU Radio
6 // GNU Radio is free software; you can redistribute it and/or modify
7 // it under the terms of the GNU General Public License as published by
8 // the Free Software Foundation; either asversion 3, or (at your option)
11 // GNU Radio is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with GNU Radio; see the file COPYING. If not, write to
18 // the Free Software Foundation, Inc., 51 Franklin Street,
19 // Boston, MA 02110-1301, USA.
25 #include <usrp/db_wbxng.h>
26 #include "db_wbxng_adf4350.h"
27 #include <db_base_impl.h>
30 // d'board i/o pin defs
31 // Tx and Rx have shared defs, but different i/o regs
32 #define ENABLE_5 (1 << 7) // enables 5.0V power supply
33 #define ENABLE_33 (1 << 6) // enables 3.3V supply
34 //#define RX_TXN (1 << 15) // Tx only: T/R antenna switch for TX/RX port
35 //#define RX2_RX1N (1 << 15) // Rx only: antenna switch between RX2 and TX/RX port
36 #define RX_TXN ((1 << 5)|(1 << 15)) // Tx only: T/R antenna switch for TX/RX port
37 #define RX2_RX1N ((1 << 5)|(1 << 15)) // Rx only: antenna switch between RX2 and TX/RX port
38 #define RXBB_EN (1 << 4)
39 #define TXMOD_EN (1 << 4)
40 #define PLL_CE (1 << 3)
41 #define PLL_PDBRF (1 << 2)
42 #define PLL_MUXOUT (1 << 1)
43 #define PLL_LOCK_DETECT (1 << 0)
45 // RX Attenuator constants
47 #define ATTN_MASK (63 << ATTN_SHIFT)
49 wbxng_base::wbxng_base(usrp_basic_sptr _usrp, int which, int _power_on)
50 : db_base(_usrp, which), d_power_on(_power_on)
53 @param usrp: instance of usrp.source_c
54 @param which: which side: 0 or 1 corresponding to side A or B respectively
58 usrp()->_write_oe(d_which, 0, 0xffff); // turn off all outputs
61 d_spi_format = SPI_FMT_MSB | SPI_FMT_HDR_0;
63 _enable_refclk(false); // disable refclk
68 wbxng_base::~wbxng_base()
75 wbxng_base::set_freq(double freq)
78 @returns (ok, actual_baseband_freq) where:
79 ok is True or False and indicates success or failure,
80 actual_baseband_freq is the RF frequency that corresponds to DC in the IF.
83 freq_t int_freq = freq_t(freq);
84 bool ok = d_common->_set_freq(int_freq*2);
85 double freq_result = (double) d_common->_get_freq()/2.0;
86 struct freq_result_t args = {ok, freq_result};
88 /* Wait before reading Lock Detect*/
94 //fprintf(stderr,"Setting WBXNG frequency, requested %d, obtained %f, lock_detect %d\n",
95 // int_freq, freq_result, d_common->_get_locked());
98 // Offsetting the LO helps get the Tx carrier leakage out of the way.
99 // This also ensures that on Rx, we're not getting hosed by the
100 // FPGA's DC removal loop's time constant. We were seeing a
101 // problem when running with discontinuous transmission.
102 // Offsetting the LO made the problem go away.
103 //freq += d_lo_offset;
109 wbxng_base::_set_pga(float pga_gain)
112 usrp()->set_pga(0, pga_gain);
113 usrp()->set_pga(1, pga_gain);
116 usrp()->set_pga(2, pga_gain);
117 usrp()->set_pga(3, pga_gain);
123 wbxng_base::is_quadrature()
126 Return True if this board requires both I & Q analog channels.
128 This bit of info is useful when setting up the USRP Rx mux register.
134 wbxng_base::freq_min()
136 return (double) d_common->_get_min_freq()/2.0;
140 wbxng_base::freq_max()
142 return (double) d_common->_get_max_freq()/2.0;
145 // ----------------------------------------------------------------
147 wbxng_base_tx::wbxng_base_tx(usrp_basic_sptr _usrp, int which, int _power_on)
148 : wbxng_base(_usrp, which, _power_on)
151 @param usrp: instance of usrp.sink_c
152 @param which: 0 or 1 corresponding to side TX_A or TX_B respectively.
156 d_spi_enable = SPI_ENABLE_TX_A;
159 d_spi_enable = SPI_ENABLE_TX_B;
162 d_common = new adf4350(_usrp, d_which, d_spi_enable);
164 // power up the transmit side, but don't enable the mixer
165 usrp()->_write_oe(d_which,(RX_TXN|TXMOD_EN|ENABLE_33|ENABLE_5), (RX_TXN|TXMOD_EN|ENABLE_33|ENABLE_5));
166 usrp()->write_io(d_which, (power_on()|RX_TXN|ENABLE_33|ENABLE_5), (RX_TXN|ENABLE_33|ENABLE_5));
167 //set_lo_offset(4e6);
170 d_common->_enable(true);
172 set_gain((gain_min() + gain_max()) / 2.0); // initialize gain
175 wbxng_base_tx::~wbxng_base_tx()
182 wbxng_base_tx::shutdown()
184 // fprintf(stderr, "wbxng_base_tx::shutdown d_is_shutdown = %d\n", d_is_shutdown);
187 d_is_shutdown = true;
188 // do whatever there is to do to shutdown
191 d_common->_enable(false);
193 // Power down and leave the T/R switch in the R position
194 usrp()->write_io(d_which, (power_off()|RX_TXN), (RX_TXN|ENABLE_33|ENABLE_5));
198 _write_control(_compute_control_reg());
200 _enable_refclk(false); // turn off refclk
206 wbxng_base_tx::set_auto_tr(bool on)
210 ok &= set_atr_mask (RX_TXN | TXMOD_EN);
211 ok &= set_atr_txval(0 | TXMOD_EN);
212 ok &= set_atr_rxval(RX_TXN);
215 ok &= set_atr_mask (0);
216 ok &= set_atr_txval(0);
217 ok &= set_atr_rxval(0);
223 wbxng_base_tx::set_enable(bool on)
226 Enable transmitter if on is true
230 int mask = RX_TXN | TXMOD_EN;
234 //d_common->_enable(true);
239 //d_common->_enable(false);
241 return usrp()->write_io(d_which, v, mask);
245 wbxng_base_tx::gain_min()
251 wbxng_base_tx::gain_max()
257 wbxng_base_tx::gain_db_per_step()
259 return gain_max()/(1+(1.4-0.5)*4096/3.3);
263 wbxng_base_tx::set_gain(float gain)
268 @param gain: gain in decibels
273 gain = std::max(gain_min(), std::min(gain, gain_max()));
275 float pga_gain, agc_gain;
276 float V_maxgain, V_mingain, V_fullscale, dac_value;
278 float maxgain = gain_max();
279 float mingain = gain_min();
286 dac_value = (agc_gain*(V_maxgain-V_mingain)/(maxgain-mingain) + V_mingain)*4096/V_fullscale;
288 //fprintf(stderr, "TXGAIN: %f dB, Dac Code: %d, Voltage: %f\n", gain, int(dac_value), float((dac_value/4096.0)*V_fullscale));
289 assert(dac_value>=0 && dac_value<4096);
291 return (usrp()->write_aux_dac(d_which, 0, int(dac_value))
292 && _set_pga(usrp()->pga_max()));
297 /**************************************************************************/
300 wbxng_base_rx::wbxng_base_rx(usrp_basic_sptr _usrp, int which, int _power_on)
301 : wbxng_base(_usrp, which, _power_on)
304 @param usrp: instance of usrp.source_c
305 @param which: 0 or 1 corresponding to side RX_A or RX_B respectively.
309 d_spi_enable = SPI_ENABLE_RX_A;
312 d_spi_enable = SPI_ENABLE_RX_B;
315 d_common = new adf4350(_usrp, d_which, d_spi_enable);
318 d_common->_enable(true);
320 usrp()->_write_oe(d_which, (RX2_RX1N|RXBB_EN|ATTN_MASK|ENABLE_33|ENABLE_5), (RX2_RX1N|RXBB_EN|ATTN_MASK|ENABLE_33|ENABLE_5));
321 usrp()->write_io(d_which, (power_on()|RX2_RX1N|RXBB_EN|ENABLE_33|ENABLE_5), (RX2_RX1N|RXBB_EN|ATTN_MASK|ENABLE_33|ENABLE_5));
322 //fprintf(stderr,"Setting WBXNG RXBB on");
324 // set up for RX on TX/RX port
325 select_rx_antenna("TX/RX");
327 bypass_adc_buffers(true);
334 wbxng_base_rx::~wbxng_base_rx()
340 wbxng_base_rx::shutdown()
342 // fprintf(stderr, "wbxng_base_rx::shutdown d_is_shutdown = %d\n", d_is_shutdown);
345 d_is_shutdown = true;
346 // do whatever there is to do to shutdown
348 // Power down VCO/PLL
349 d_common->_enable(false);
351 // fprintf(stderr, "wbxng_base_rx::shutdown before _write_control\n");
352 //_write_control(_compute_control_reg());
354 // fprintf(stderr, "wbxng_base_rx::shutdown before _enable_refclk\n");
355 _enable_refclk(false); // turn off refclk
357 // fprintf(stderr, "wbxng_base_rx::shutdown before set_auto_tr\n");
361 usrp()->write_io(d_which, power_off(), (RX2_RX1N|RXBB_EN|ATTN_MASK|ENABLE_33|ENABLE_5));
363 // fprintf(stderr, "wbxng_base_rx::shutdown after set_auto_tr\n");
368 wbxng_base_rx::set_auto_tr(bool on)
372 ok &= set_atr_mask (RXBB_EN|RX2_RX1N);
373 ok &= set_atr_txval( 0|RX2_RX1N);
374 ok &= set_atr_rxval(RXBB_EN| 0);
377 ok &= set_atr_mask (0);
378 ok &= set_atr_txval(0);
379 ok &= set_atr_rxval(0);
385 wbxng_base_rx::select_rx_antenna(int which_antenna)
388 Specify which antenna port to use for reception.
389 @param which_antenna: either 'TX/RX' or 'RX2'
392 if(which_antenna == 0) {
393 usrp()->write_io(d_which, 0,RX2_RX1N);
395 else if(which_antenna == 1) {
396 usrp()->write_io(d_which, RX2_RX1N, RX2_RX1N);
405 wbxng_base_rx::select_rx_antenna(const std::string &which_antenna)
408 Specify which antenna port to use for reception.
409 @param which_antenna: either 'TX/RX' or 'RX2'
413 if(which_antenna == "TX/RX") {
414 usrp()->write_io(d_which, 0, RX2_RX1N);
416 else if(which_antenna == "RX2") {
417 usrp()->write_io(d_which, RX2_RX1N, RX2_RX1N);
427 wbxng_base_rx::set_gain(float gain)
432 @param gain: gain in decibels
437 gain = std::max(gain_min(), std::min(gain, gain_max()));
439 float pga_gain, agc_gain;
441 float maxgain = gain_max() - usrp()->pga_max();
442 float mingain = gain_min();
444 pga_gain = gain-maxgain;
445 assert(pga_gain <= usrp()->pga_max());
453 return _set_attn(maxgain-agc_gain) && _set_pga(int(pga_gain));
457 wbxng_base_rx::_set_attn(float attn)
459 int attn_code = int(floor(attn/0.5));
460 unsigned int iobits = (~attn_code) << ATTN_SHIFT;
461 //fprintf(stderr, "Attenuation: %f dB, Code: %d, IO Bits %x, Mask: %x \n", attn, attn_code, iobits & ATTN_MASK, ATTN_MASK);
462 return usrp()->write_io(d_which, iobits, ATTN_MASK);
465 // ----------------------------------------------------------------
467 db_wbxng_tx::db_wbxng_tx(usrp_basic_sptr usrp, int which)
468 : wbxng_base_tx(usrp, which)
472 db_wbxng_tx::~db_wbxng_tx()
476 db_wbxng_rx::db_wbxng_rx(usrp_basic_sptr usrp, int which)
477 : wbxng_base_rx(usrp, which)
479 set_gain((gain_min() + gain_max()) / 2.0); // initialize gain
482 db_wbxng_rx::~db_wbxng_rx()
487 db_wbxng_rx::gain_min()
489 return usrp()->pga_min();
493 db_wbxng_rx::gain_max()
495 return usrp()->pga_max()+30.5;
499 db_wbxng_rx::gain_db_per_step()
506 db_wbxng_rx::i_and_q_swapped()