3 * Copyright 2007 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 along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
26 #include <mb_mblock.h>
27 #include <mb_runtime.h>
28 #include <mb_protocol_class.h>
29 #include <mb_exception.h>
30 #include <mb_msg_queue.h>
31 #include <mb_message.h>
32 #include <mb_msg_accepter.h>
33 #include <mb_class_registry.h>
40 #include <symbols_usrp_server_cs.h>
41 #include <symbols_usrp_channel.h>
42 #include <symbols_usrp_low_level_cs.h>
43 #include <symbols_usrp_tx.h>
45 static bool verbose = false;
47 class test_usrp_tx : public mb_mblock
51 pmt_t d_tx_chan; // returned tx channel handle
63 long d_nsamples_to_send;
64 long d_nsamples_xmitted;
65 long d_nframes_xmitted;
66 long d_samples_per_frame;
69 // for generating sine wave output
70 ui_nco<float,float> d_nco;
74 test_usrp_tx(mb_runtime *runtime, const std::string &instance_name, pmt_t user_arg);
76 void initial_transition();
77 void handle_message(mb_message_sptr msg);
82 void allocate_channel();
84 void enter_transmitting();
85 void build_and_send_next_frame();
86 void handle_xmit_response(pmt_t invocation_handle);
87 void enter_closing_channel();
90 test_usrp_tx::test_usrp_tx(mb_runtime *runtime, const std::string &instance_name, pmt_t user_arg)
91 : mb_mblock(runtime, instance_name, user_arg),
92 d_state(INIT), d_nsamples_to_send((long) 40e6),
93 d_nsamples_xmitted(0),
95 //d_samples_per_frame((long)(126)),
96 //d_samples_per_frame((long)(126 * 3.5)), // non-full packet
97 d_samples_per_frame((long)(126 * 4)), // full packet
98 d_done_sending(false),
101 // std::cout << "[TEST_USRP_TX] Initializing...\n";
103 d_tx = define_port("tx0", "usrp-tx", false, mb_port::INTERNAL);
104 d_cs = define_port("cs", "usrp-server-cs", false, mb_port::INTERNAL);
106 //bool fake_usrp_p = true;
107 bool fake_usrp_p = false;
111 pmt_t usrp_dict = pmt_make_dict();
114 pmt_dict_set(usrp_dict,
115 pmt_intern("fake-usrp"),
119 // Specify the RBF to use
120 pmt_dict_set(usrp_dict,
122 pmt_intern("cs1.rbf"));
124 // Set TX and RX interpolations
125 pmt_dict_set(usrp_dict,
126 pmt_intern("interp-tx"),
129 pmt_dict_set(usrp_dict,
130 pmt_intern("decim-rx"),
133 pmt_dict_set(usrp_dict,
134 pmt_intern("rf-freq"),
135 pmt_from_long(10e6));
137 define_component("server", "usrp_server", usrp_dict);
139 connect("self", "tx0", "server", "tx0");
140 connect("self", "cs", "server", "cs");
144 int interp = 32; // 32 -> 4MS/s
145 double sample_rate = 128e6 / interp;
146 d_nco.set_freq(2*M_PI * freq/sample_rate);
148 // FIXME need to somehow set the interp rate in the USRP.
149 // for now, we'll have the low-level code hardwire it.
152 test_usrp_tx::~test_usrp_tx()
157 test_usrp_tx::initial_transition()
163 test_usrp_tx::handle_message(mb_message_sptr msg)
165 pmt_t event = msg->signal();
166 pmt_t data = msg->data();
168 pmt_t handle = PMT_F;
169 pmt_t status = PMT_F;
170 std::string error_msg;
172 //std::cout << msg << std::endl;
176 if (pmt_eq(event, s_response_open)){
177 status = pmt_nth(1, data);
178 if (pmt_eq(status, PMT_T)){
183 error_msg = "failed to open usrp:";
189 case ALLOCATING_CHANNEL:
190 if (pmt_eq(event, s_response_allocate_channel)){
191 status = pmt_nth(1, data);
192 d_tx_chan = pmt_nth(2, data);
194 if (pmt_eq(status, PMT_T)){
195 enter_transmitting();
199 error_msg = "failed to allocate channel:";
206 if (pmt_eq(event, s_response_xmit_raw_frame)){
207 handle = pmt_nth(0, data);
208 status = pmt_nth(1, data);
210 if (pmt_eq(status, PMT_T)){
211 handle_xmit_response(handle);
215 error_msg = "bad response-xmit-raw-frame:";
221 case CLOSING_CHANNEL:
222 if (pmt_eq(event, s_response_deallocate_channel)){
223 status = pmt_nth(1, data);
225 if (pmt_eq(status, PMT_T)){
230 error_msg = "failed to deallocate channel:";
237 if (pmt_eq(event, s_response_close)){
238 status = pmt_nth(1, data);
240 if (pmt_eq(status, PMT_T)){
245 error_msg = "failed to close USRP:";
257 std::cerr << error_msg << data
258 << "status = " << status << std::endl;
263 std::cout << "test_usrp_inband_tx: unhandled msg: " << msg
264 << "in state "<< d_state << std::endl;
269 test_usrp_tx::open_usrp()
271 pmt_t which_usrp = pmt_from_long(0);
273 d_cs->send(s_cmd_open, pmt_list2(PMT_NIL, which_usrp));
274 d_state = OPENING_USRP;
278 test_usrp_tx::close_usrp()
280 d_cs->send(s_cmd_close, pmt_list1(PMT_NIL));
281 d_state = CLOSING_USRP;
285 test_usrp_tx::allocate_channel()
287 long capacity = (long) 16e6;
288 d_tx->send(s_cmd_allocate_channel, pmt_list2(PMT_T, pmt_from_long(capacity)));
289 d_state = ALLOCATING_CHANNEL;
293 test_usrp_tx::enter_transmitting()
295 d_state = TRANSMITTING;
296 d_nsamples_xmitted = 0;
298 // FIXME: carrier sense hack
299 d_tx->send(s_cmd_to_control_channel, // C/S packet
300 pmt_list2(PMT_NIL, // invoc handle
302 pmt_list2(s_op_write_reg,
305 pmt_from_long(21))))));
307 build_and_send_next_frame(); // fire off 4 to start pipeline
308 build_and_send_next_frame();
309 build_and_send_next_frame();
310 build_and_send_next_frame();
314 test_usrp_tx::build_and_send_next_frame()
316 // allocate the uniform vector for the samples
317 // FIXME perhaps hold on to this between calls
320 long nsamples_this_frame =
321 std::min(d_nsamples_to_send - d_nsamples_xmitted,
322 d_samples_per_frame);
324 long nsamples_this_frame = d_samples_per_frame;
327 if (nsamples_this_frame == 0){
328 d_done_sending = true;
333 size_t nshorts = 2 * nsamples_this_frame; // 16-bit I & Q
334 pmt_t uvec = pmt_make_s16vector(nshorts, 0);
336 int16_t *samples = pmt_s16vector_writeable_elements(uvec, ignore);
338 // fill in the complex sinusoid
340 for (int i = 0; i < nsamples_this_frame; i++){
344 d_nco.sincos(&s, 1, d_amplitude);
345 // write 16-bit i & q
346 samples[2*i] = (int16_t) s.real();
347 samples[2*i+1] = (int16_t) s.imag();
350 gr_complex s(d_amplitude, d_amplitude);
352 // write 16-bit i & q
353 samples[2*i] = (int16_t) s.real();
354 samples[2*i+1] = (int16_t) s.imag();
358 pmt_t tx_properties = pmt_make_dict();
359 pmt_dict_set(tx_properties,
360 pmt_intern("carrier-sense"),
363 pmt_t timestamp = pmt_from_long(0xffffffff); // NOW
364 d_tx->send(s_cmd_xmit_raw_frame,
365 pmt_list5(pmt_from_long(d_nframes_xmitted), // invocation-handle
366 d_tx_chan, // channel
371 d_nsamples_xmitted += nsamples_this_frame;
375 std::cout << "[TEST_USRP_INBAND_TX] Transmitted frame\n";
380 test_usrp_tx::handle_xmit_response(pmt_t handle)
382 if (d_done_sending &&
383 pmt_to_long(handle) == (d_nframes_xmitted - 1)){
384 // We're done sending and have received all responses
385 enter_closing_channel();
388 build_and_send_next_frame();
392 test_usrp_tx::enter_closing_channel()
394 d_state = CLOSING_CHANNEL;
396 d_tx->send(s_cmd_deallocate_channel, pmt_list2(PMT_NIL, d_tx_chan));
399 REGISTER_MBLOCK_CLASS(test_usrp_tx);
402 // ----------------------------------------------------------------
405 main (int argc, char **argv)
407 // handle any command line args here
409 mb_runtime_sptr rt = mb_make_runtime();
410 pmt_t result = PMT_NIL;
412 rt->run("top", "test_usrp_tx", PMT_F, &result);