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tested 23.04 Ms/s sampling for 20 MHz on USRP B210, modifications in usrp_lib.cpp.

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This commit is contained in:
Raymond Knopp
2015-12-30 11:49:21 +01:00
parent f53df3521f
commit 09e354a240
3 changed files with 15 additions and 5 deletions
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targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp
+11 -1
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@@ -446,28 +446,38 @@ int openair0_dev_init_usrp(openair0_device* device, openair0_config_t *openair0_
// set master clock rate and sample rate for tx & rx for streaming
device->type = USRP_B200_IF;
s->usrp->set_master_clock_rate(30.72e6);
openair0_cfg[0].rx_gain_calib_table = calib_table_b210;
switch ((int)openair0_cfg[0].sample_rate) {
case 30720000:
s->usrp->set_master_clock_rate(30.72e6);
// from usrp_time_offset
openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 115;
openair0_cfg[0].tx_scheduling_advance = 11*openair0_cfg[0].samples_per_packet;
break;
case 23040000:
s->usrp->set_master_clock_rate(46.08e6);
openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 113;
openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
break;
case 15360000:
s->usrp->set_master_clock_rate(30.72e6);
openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 113;
openair0_cfg[0].tx_scheduling_advance = 5*openair0_cfg[0].samples_per_packet;
break;
case 7680000:
s->usrp->set_master_clock_rate(30.72e6);
openair0_cfg[0].samples_per_packet = 1024;
openair0_cfg[0].tx_sample_advance = 70;//103;
openair0_cfg[0].tx_scheduling_advance = 5*openair0_cfg[0].samples_per_packet;
break;
case 1920000:
s->usrp->set_master_clock_rate(30.72e6);
openair0_cfg[0].samples_per_packet = 256;
openair0_cfg[0].tx_sample_advance = 40;
openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;