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fixing adc inpput shift and gain table for N310. adding pps sync.

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This commit is contained in:
Florian Kaltenberger
2020-09-03 13:49:41 +02:00
committed by Florian Kaltenberger
parent e31349256f
commit 627da47786
3 changed files with 204 additions and 225 deletions
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targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp
+45 -41
View File
@@ -108,7 +108,8 @@ typedef struct {
int64_t rx_count;
int wait_for_first_pps;
int use_gps;
int first_tx;
//int first_tx;
//int first_rx;
//! timestamp of RX packet
openair0_timestamp rx_timestamp;
} usrp_state_t;
@@ -282,31 +283,28 @@ static int trx_usrp_start(openair0_device *device) {
// set pin 5 (Shutdown LNA) to 1 when the radio is transmitting and receiveing (ATR_XX)
// (we use full duplex here, because our RX is on all the time - this might need to change later)
s->usrp->set_gpio_attr("FP0", "ATR_XX", (1<<5), 0x7f);
// set the output pins to 0
// set the output pins to 1
s->usrp->set_gpio_attr("FP0", "OUT", 7<<7, 0xf80);
// init recv and send streaming
uhd::stream_cmd_t cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
LOG_I(HW,"Time in secs now: %llu \n", s->usrp->get_time_now().to_ticks(s->sample_rate));
LOG_I(HW,"Time in secs last pps: %llu \n", s->usrp->get_time_last_pps().to_ticks(s->sample_rate));
if (s->use_gps == 1 || device->openair0_cfg[0].time_source == external) {
s->wait_for_first_pps = 1;
cmd.time_spec = s->usrp->get_time_last_pps() + uhd::time_spec_t(1.0);
} else {
s->wait_for_first_pps = 0;
cmd.time_spec = s->usrp->get_time_now() + uhd::time_spec_t(0.005);
}
cmd.stream_now = false; // start at constant delay
s->rx_stream->issue_stream_cmd(cmd);
/*s->tx_md.time_spec = cmd.time_spec + uhd::time_spec_t(1-(double)s->tx_forward_nsamps/s->sample_rate);
s->tx_md.has_time_spec = true;
s->tx_md.start_of_burst = true;
s->tx_md.end_of_burst = false;*/
s->wait_for_first_pps = 1;
s->rx_count = 0;
s->tx_count = 0;
//s->first_tx = 1;
//s->first_rx = 1;
s->rx_timestamp = 0;
s->usrp->set_time_next_pps(uhd::time_spec_t(0.0));
// wait for the pps to change
uhd::time_spec_t time_last_pps = s->usrp->get_time_last_pps();
while (time_last_pps == s->usrp->get_time_last_pps()) {
boost::this_thread::sleep(boost::posix_time::milliseconds(1));
}
uhd::stream_cmd_t cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
cmd.time_spec = uhd::time_spec_t(1.0);
cmd.stream_now = false; // start at constant delay
s->rx_stream->issue_stream_cmd(cmd);
return 0;
}
/*! \brief Terminate operation of the USRP transceiver -- free all associated resources
@@ -635,7 +633,6 @@ static int trx_usrp_read(openair0_device *device, openair0_timestamp *ptimestamp
int16x8_t buff_tmp[2][nsamps2];
#endif
if (device->type == USRP_B200_DEV) {
if (cc>1) {
// receive multiple channels (e.g. RF A and RF B)
std::vector<void *> buff_ptrs;
@@ -648,7 +645,7 @@ static int trx_usrp_read(openair0_device *device, openair0_timestamp *ptimestamp
samples_received=0;
while (samples_received != nsamps) {
samples_received += s->rx_stream->recv(buff_tmp[0]+samples_received,
samples_received += s->rx_stream->recv((void*)((int32_t*)buff_tmp[0]+samples_received),
nsamps-samples_received, s->rx_md);
if ((s->wait_for_first_pps == 0) && (s->rx_md.error_code!=uhd::rx_metadata_t::ERROR_CODE_NONE))
@@ -658,7 +655,6 @@ static int trx_usrp_read(openair0_device *device, openair0_timestamp *ptimestamp
printf("sleep...\n"); //usleep(100);
}
}
if (samples_received == nsamps) s->wait_for_first_pps=0;
}
@@ -684,22 +680,10 @@ static int trx_usrp_read(openair0_device *device, openair0_timestamp *ptimestamp
#endif
}
}
} else if (device->type == USRP_X300_DEV) {
if (cc>1) {
// receive multiple channels (e.g. RF A and RF B)
std::vector<void *> buff_ptrs;
for (int i=0; i<cc; i++) buff_ptrs.push_back(buff[i]);
samples_received = s->rx_stream->recv(buff_ptrs, nsamps, s->rx_md,1.0);
} else {
// receive a single channel (e.g. from connector RF A)
samples_received = s->rx_stream->recv(buff[0], nsamps, s->rx_md,1.0);
if (samples_received < nsamps) {
LOG_E(HW,"[recv] received %d samples out of %d\n",samples_received,nsamps);
}
}
if (samples_received < nsamps)
LOG_E(HW,"[recv] received %d samples out of %d\n",samples_received,nsamps);
if ( s->rx_md.error_code != uhd::rx_metadata_t::ERROR_CODE_NONE)
LOG_E(HW, "%s\n", s->rx_md.to_pp_string(true).c_str());
@@ -835,6 +819,17 @@ rx_gain_calib_table_t calib_table_x310[] = {
{-1,0}
};
/*! \brief USRPB210 RX calibration table */
rx_gain_calib_table_t calib_table_n310[] = {
{3500000000.0,0.0},
{2660000000.0,0.0},
{2300000000.0,0.0},
{1880000000.0,0.0},
{816000000.0, 0.0},
{-1,0}
};
/*! \brief Set RX gain offset
* \param openair0_cfg RF frontend parameters set by application
* \param chain_index RF chain to apply settings to
@@ -984,7 +979,7 @@ extern "C" {
if (device_adds[0].get("type") == "n3xx") {
printf("Found USRP n300\n");
device->type=USRP_X300_DEV; //treat it as X300 for now
device->type=USRP_N300_DEV;
usrp_master_clock = 122.88e6;
args += boost::str(boost::format(",master_clock_rate=%f") % usrp_master_clock);
//args += ", send_buff_size=33554432";
@@ -1070,9 +1065,18 @@ extern "C" {
if (device->type==USRP_X300_DEV) {
openair0_cfg[0].rx_gain_calib_table = calib_table_x310;
std::cerr << "-- Using calibration table: calib_table_x310" << std::endl; // Bell Labs info
std::cerr << "-- Using calibration table: calib_table_x310" << std::endl;
}
if (device->type==USRP_N300_DEV) {
openair0_cfg[0].rx_gain_calib_table = calib_table_n310;
std::cerr << "-- Using calibration table: calib_table_n310" << std::endl;
}
if (device->type==USRP_N300_DEV || device->type==USRP_X300_DEV) {
LOG_I(HW,"%s() sample_rate:%u\n", __FUNCTION__, (int)openair0_cfg[0].sample_rate);
switch ((int)openair0_cfg[0].sample_rate) {
case 122880000:
// from usrp_time_offset