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Delete unused or useless code

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Note: device->Mod_id is deleted in !3831. The calibration table has no
purpose.

Co-authored-by: Brice Robert <robert@eurecom.fr>
This commit is contained in:
Robert Schmidt
2026-02-11 18:37:45 +01:00
co-authored by Brice Robert
parent 93c37e96e6
commit 5fdec24b52
2 changed files with 59 additions and 841 deletions
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radio/BLADERF/bladerf_lib.c
+59 -719
View File
@@ -19,60 +19,72 @@
* contact@openairinterface.org
*/
/** bladerf_lib.c
*
* Author: navid nikaein
*/
#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include "bladerf_lib.h"
#include "math.h"
#include "PHY/sse_intrin.h"
#include <stdint.h>
#include <libbladeRF.h>
#include "common_lib.h"
/*! \brief BladeRF specific data structure */
typedef struct {
//! opaque BladeRF device struct. An empty ("") or NULL device identifier will result in the first encountered device being opened
//! (using the first discovered backend)
struct bladerf *dev;
//! Number of buffers
unsigned int num_buffers;
//! Buffer size
unsigned int buffer_size;
//! Number of transfers
unsigned int num_transfers;
//! RX timeout
unsigned int rx_timeout_ms;
//! TX timeout
unsigned int tx_timeout_ms;
//! Metadata for RX
struct bladerf_metadata meta_rx;
//! Metadata for TX
struct bladerf_metadata meta_tx;
//! Sample rate
unsigned int sample_rate;
// --------------------------------
// Debug and output control
// --------------------------------
//! Number of underflows
int num_underflows;
//! Number of overflows
int num_overflows;
//! number of RX errors
int num_rx_errors;
//! Number of TX errors
int num_tx_errors;
//! timestamp of current TX
uint64_t tx_current_ts;
//! timestamp of current RX
uint64_t rx_current_ts;
//! number of actual samples transmitted
uint64_t tx_actual_nsamps;
//! number of actual samples received
uint64_t rx_actual_nsamps;
//! number of TX samples
uint64_t tx_nsamps;
//! number of RX samples
uint64_t rx_nsamps;
//! number of TX count
uint64_t tx_count;
//! number of RX count
uint64_t rx_count;
} brf_state_t;
int brf_error(int status);
/** @addtogroup _BLADERF_PHY_RF_INTERFACE_
* @{
*/
//! Number of BladeRF devices
int num_devices=0;
/*These items configure the underlying asynch stream used by the the sync interface.
*/
/*! \brief BladeRF Init function (not used at the moment)
* \param device RF frontend parameters set by application
* \returns 0 on success
*/
int trx_brf_init(openair0_device_t *device)
{
return 0;
}
/*! \brief get current timestamp
*\param device the hardware to use
*\param module the bladeRf module
*\returns timestamp of BladeRF
*/
openair0_timestamp_t trx_get_timestamp(openair0_device_t *device, bladerf_module module)
{
int status;
struct bladerf_metadata meta;
brf_state_t *brf = (brf_state_t*)device->priv;
memset(&meta, 0, sizeof(meta));
if ((status=bladerf_get_timestamp(brf->dev, module, &meta.timestamp)) != 0) {
fprintf(stderr,"Failed to get current %s timestamp: %s\n",(module == BLADERF_MODULE_RX ) ? "RX" : "TX", bladerf_strerror(status));
return -1;
} // else {printf("Current RX timestampe 0x%016"PRIx64"\n", meta.timestamp); }
return meta.timestamp;
}
/*! \brief Start BladeRF
* \param device the hardware to use
* \returns 0 on success
@@ -314,624 +326,6 @@ int trx_brf_write_init(openair0_device_t *device)
return 0;
}
#define RXDCLENGTH 16384
int16_t cos_fsover8[8] = {2047, 1447, 0, -1448, -2047, -1448, 0, 1447};
int16_t cos_3fsover8[8] = {2047, -1448, 0, 1447, -2047, 1447, 0, -1448};
/*! \brief calibration table for BladeRF */
rx_gain_calib_table_t calib_table_fx4[] = {
{2300000000.0,53.5},
{1880000000.0,57.0},
{816000000.0,73.0},
{-1,0}
};
/*! \brief set RX gain offset from calibration table
* \param openair0_cfg RF frontend parameters set by application
* \param chain_index RF chain ID
*/
void set_rx_gain_offset(openair0_config_t *openair0_cfg,
int chain_index)
{
int i=0;
// loop through calibration table to find best adjustment factor for RX frequency
double min_diff = 6e9,diff;
while (openair0_cfg->rx_gain_calib_table[i].freq>0) {
diff = fabs(openair0_cfg->rx_freq[chain_index] - openair0_cfg->rx_gain_calib_table[i].freq);
printf("cal %d: freq %f, offset %f, diff %f\n",
i,
openair0_cfg->rx_gain_calib_table[i].freq,
openair0_cfg->rx_gain_calib_table[i].offset,diff);
if (min_diff > diff) {
min_diff = diff;
openair0_cfg->rx_gain_offset[chain_index] = openair0_cfg->rx_gain_calib_table[i].offset;
}
i++;
}
}
/*! \brief Calibrate LMSSDR RF
* \param device the hardware to use
*/
void calibrate_rf(openair0_device_t *device)
{
/* TODO: this function does not seem to work. Disabled until fixed. */
return;
brf_state_t *brf = (brf_state_t *)device->priv;
openair0_timestamp_t ptimestamp;
int16_t *calib_buffp,*calib_tx_buffp;
int16_t calib_buff[2*RXDCLENGTH];
int16_t calib_tx_buff[2*RXDCLENGTH];
int i,j,offI,offQ,offIold,offQold,offInew,offQnew,offphase,offphaseold,offphasenew,offgain,offgainold,offgainnew;
int32_t meanI,meanQ,meanIold,meanQold;
int cnt=0,loop;
// put TX on a far-away frequency to avoid interference in RX band
bladerf_set_frequency(brf->dev,BLADERF_MODULE_TX, (unsigned int) device->openair0_cfg->rx_freq[0] + 200e6);
// Set gains to close to max
bladerf_set_gain(brf->dev, BLADERF_MODULE_RX, 60);
bladerf_set_gain(brf->dev, BLADERF_MODULE_TX, 60);
// fill TX buffer with fs/8 complex sinusoid
j=0;
for (i=0; i<RXDCLENGTH; i++) {
calib_tx_buff[j++] = cos_fsover8[i&7];
calib_tx_buff[j++] = cos_fsover8[(i+6)&7]; // sin
}
calib_buffp = &calib_buff[0];
calib_tx_buffp = &calib_tx_buff[0];
// Calibrate RX DC offset
offIold=offQold=2048;
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_I,offIold);
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_Q,offQold);
for (i=0; i<10; i++)
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
for (meanIold=meanQold=i=j=0; i<RXDCLENGTH; i++) {
meanIold+=calib_buff[j++];
meanQold+=calib_buff[j++];
}
meanIold/=RXDCLENGTH;
meanQold/=RXDCLENGTH;
printf("[BRF] RX DC: (%d,%d) => (%d,%d)\n",offIold,offQold,meanIold,meanQold);
offI=offQ=-2048;
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_I,offI);
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_Q,offQ);
for (i=0; i<10; i++)
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
meanI+=calib_buff[j++];
meanQ+=calib_buff[j++];
}
meanI/=RXDCLENGTH;
meanQ/=RXDCLENGTH;
// printf("[BRF] RX DC: (%d,%d) => (%d,%d)\n",offI,offQ,meanI,meanQ);
while (cnt++ < 12) {
offInew=(offIold+offI)>>1;
offQnew=(offQold+offQ)>>1;
if (meanI*meanI < meanIold*meanIold) {
meanIold = meanI;
offIold = offI;
printf("[BRF] *** RX DC: offI %d => %d\n",offIold,meanI);
}
if (meanQ*meanQ < meanQold*meanQold) {
meanQold = meanQ;
offQold = offQ;
printf("[BRF] *** RX DC: offQ %d => %d\n",offQold,meanQ);
}
offI = offInew;
offQ = offQnew;
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_I,offI);
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_Q,offQ);
for (i=0; i<10; i++)
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
meanI+=calib_buff[j++];
meanQ+=calib_buff[j++];
}
meanI/=RXDCLENGTH;
meanQ/=RXDCLENGTH;
printf("[BRF] RX DC: (%d,%d) => (%d,%d)\n",offI,offQ,meanI,meanQ);
}
printf("[BRF] RX DC: (%d,%d) => (%d,%d)\n",offIold,offQold,meanIold,meanQold);
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_I,offIold);
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_Q,offQold);
// TX DC offset
// PUT TX as f_RX + fs/4
// loop back BLADERF_LB_RF_LNA1
bladerf_set_frequency(brf->dev,BLADERF_MODULE_TX, (unsigned int) device->openair0_cfg->rx_freq[0] + (unsigned int) device->openair0_cfg->sample_rate/4);
bladerf_set_loopback (brf->dev,BLADERF_LB_RF_LNA1);
offIold=2048;
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_LMS_DCOFF_I,offIold);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
for (meanIold=meanQold=i=j=0; i<RXDCLENGTH; i++) {
switch (i&3) {
case 0:
meanIold+=calib_buff[j++];
break;
case 1:
meanQold+=calib_buff[j++];
break;
case 2:
meanIold-=calib_buff[j++];
break;
case 3:
meanQold-=calib_buff[j++];
break;
}
}
// meanIold/=RXDCLENGTH;
// meanQold/=RXDCLENGTH;
printf("[BRF] TX DC (offI): %d => (%d,%d)\n",offIold,meanIold,meanQold);
offI=-2048;
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_LMS_DCOFF_I,offI);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
switch (i&3) {
case 0:
meanI+=calib_buff[j++];
break;
case 1:
meanQ+=calib_buff[j++];
break;
case 2:
meanI-=calib_buff[j++];
break;
case 3:
meanQ-=calib_buff[j++];
break;
}
}
// meanI/=RXDCLENGTH;
// meanQ/=RXDCLENGTH;
printf("[BRF] TX DC (offI): %d => (%d,%d)\n",offI,meanI,meanQ);
cnt = 0;
while (cnt++ < 12) {
offInew=(offIold+offI)>>1;
if (meanI*meanI+meanQ*meanQ < meanIold*meanIold +meanQold*meanQold) {
printf("[BRF] TX DC (offI): ([%d,%d]) => %d : %d\n",offIold,offI,offInew,meanI*meanI+meanQ*meanQ);
meanIold = meanI;
meanQold = meanQ;
offIold = offI;
}
offI = offInew;
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_LMS_DCOFF_I,offI);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
switch (i&3) {
case 0:
meanI+=calib_buff[j++];
break;
case 1:
meanQ+=calib_buff[j++];
break;
case 2:
meanI-=calib_buff[j++];
break;
case 3:
meanQ-=calib_buff[j++];
break;
}
}
// meanI/=RXDCLENGTH;
// meanQ/=RXDCLENGTH;
// printf("[BRF] TX DC (offI): %d => (%d,%d)\n",offI,meanI,meanQ);
}
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_LMS_DCOFF_I,offIold);
offQold=2048;
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_LMS_DCOFF_Q,offQold);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
// project on fs/4
for (meanIold=meanQold=i=j=0; i<RXDCLENGTH; i++) {
switch (i&3) {
case 0:
meanIold+=calib_buff[j++];
break;
case 1:
meanQold+=calib_buff[j++];
break;
case 2:
meanIold-=calib_buff[j++];
break;
case 3:
meanQold-=calib_buff[j++];
break;
}
}
// meanIold/=RXDCLENGTH;
// meanQold/=RXDCLENGTH;
printf("[BRF] TX DC (offQ): %d => (%d,%d)\n",offQold,meanIold,meanQold);
offQ=-2048;
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_LMS_DCOFF_Q,offQ);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
switch (i&3) {
case 0:
meanI+=calib_buff[j++];
break;
case 1:
meanQ+=calib_buff[j++];
break;
case 2:
meanI-=calib_buff[j++];
break;
case 3:
meanQ-=calib_buff[j++];
break;
}
}
// meanI/=RXDCLENGTH;
// meanQ/=RXDCLENGTH;
printf("[BRF] TX DC (offQ): %d => (%d,%d)\n",offQ,meanI,meanQ);
cnt=0;
while (cnt++ < 12) {
offQnew=(offQold+offQ)>>1;
if (meanI*meanI+meanQ*meanQ < meanIold*meanIold +meanQold*meanQold) {
printf("[BRF] TX DC (offQ): ([%d,%d]) => %d : %d\n",offQold,offQ,offQnew,meanI*meanI+meanQ*meanQ);
meanIold = meanI;
meanQold = meanQ;
offQold = offQ;
}
offQ = offQnew;
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_LMS_DCOFF_Q,offQ);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
switch (i&3) {
case 0:
meanI+=calib_buff[j++];
break;
case 1:
meanQ+=calib_buff[j++];
break;
case 2:
meanI-=calib_buff[j++];
break;
case 3:
meanQ-=calib_buff[j++];
break;
}
}
// meanI/=RXDCLENGTH;
// meanQ/=RXDCLENGTH;
// printf("[BRF] TX DC (offQ): %d => (%d,%d)\n",offQ,meanI,meanQ);
}
printf("[BRF] TX DC: (%d,%d) => (%d,%d)\n",offIold,offQold,meanIold,meanQold);
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_LMS_DCOFF_Q,offQold);
// TX IQ imbalance
for (loop=0; loop<2; loop++) {
offphaseold=4096;
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_FPGA_PHASE,offphaseold);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
// project on fs/8 (Image of TX signal in +ve frequencies)
for (meanIold=meanQold=i=j=0; i<RXDCLENGTH; i++) {
meanIold+= (calib_buff[j]*cos_fsover8[i&7] - calib_buff[j+1]*cos_fsover8[(i+2)&7])>>11;
meanQold+= (calib_buff[j]*cos_fsover8[(i+2)&7] + calib_buff[j+1]*cos_fsover8[i&7])>>11;
j+=2;
}
meanIold/=RXDCLENGTH;
meanQold/=RXDCLENGTH;
printf("[BRF] TX IQ (offphase): %d => (%d,%d)\n",offphaseold,meanIold,meanQold);
offphase=-4096;
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_FPGA_PHASE,offphase);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
// project on fs/8 (Image of TX signal in +ve frequencies)
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
meanI+= (calib_buff[j]*cos_fsover8[i&7] - calib_buff[j+1]*cos_fsover8[(i+2)&7])>>11;
meanQ+= (calib_buff[j]*cos_fsover8[(i+2)&7] + calib_buff[j+1]*cos_fsover8[i&7])>>11;
j+=2;
}
meanI/=RXDCLENGTH;
meanQ/=RXDCLENGTH;
printf("[BRF] TX IQ (offphase): %d => (%d,%d)\n",offphase,meanI,meanQ);
cnt=0;
while (cnt++ < 13) {
offphasenew=(offphaseold+offphase)>>1;
printf("[BRF] TX IQ (offphase): ([%d,%d]) => %d : %d\n",offphaseold,offphase,offphasenew,meanI*meanI+meanQ*meanQ);
if (meanI*meanI+meanQ*meanQ < meanIold*meanIold +meanQold*meanQold) {
meanIold = meanI;
meanQold = meanQ;
offphaseold = offphase;
}
offphase = offphasenew;
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_FPGA_PHASE,offphase);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
// project on fs/8 (Image of TX signal in +ve frequencies)
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
meanI+= (calib_buff[j]*cos_fsover8[i&7] - calib_buff[j+1]*cos_fsover8[(i+2)&7])>>11;
meanQ+= (calib_buff[j]*cos_fsover8[(i+2)&7] + calib_buff[j+1]*cos_fsover8[i&7])>>11;
j+=2;
}
meanI/=RXDCLENGTH;
meanQ/=RXDCLENGTH;
// printf("[BRF] TX DC (offQ): %d => (%d,%d)\n",offQ,meanI,meanQ);
}
printf("[BRF] TX IQ offphase: %d => (%d,%d)\n",offphaseold,meanIold,meanQold);
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_FPGA_PHASE,offphaseold);
offgainold=4096;
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_FPGA_GAIN,offgainold);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
// project on fs/8 (Image of TX signal in +ve frequencies)
for (meanIold=meanQold=i=j=0; i<RXDCLENGTH; i++) {
meanIold+= (calib_buff[j]*cos_fsover8[i&7] - calib_buff[j+1]*cos_fsover8[(i+2)&7])>>11;
meanQold+= (calib_buff[j]*cos_fsover8[(i+2)&7] + calib_buff[j+1]*cos_fsover8[i&7])>>11;
j+=2;
}
meanIold/=RXDCLENGTH;
meanQold/=RXDCLENGTH;
printf("[BRF] TX IQ (offgain): %d => (%d,%d)\n",offgainold,meanIold,meanQold);
offgain=-4096;
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_FPGA_GAIN,offgain);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
// project on fs/8 (Image of TX signal in +ve frequencies)
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
meanI+= (calib_buff[j]*cos_fsover8[i&7] - calib_buff[j+1]*cos_fsover8[(i+2)&7])>>11;
meanQ+= (calib_buff[j]*cos_fsover8[(i+2)&7] + calib_buff[j+1]*cos_fsover8[i&7])>>11;
j+=2;
}
meanI/=RXDCLENGTH;
meanQ/=RXDCLENGTH;
printf("[BRF] TX IQ (offgain): %d => (%d,%d)\n",offgain,meanI,meanQ);
cnt=0;
while (cnt++ < 13) {
offgainnew=(offgainold+offgain)>>1;
if (meanI*meanI+meanQ*meanQ < meanIold*meanIold +meanQold*meanQold) {
printf("[BRF] TX IQ (offgain): ([%d,%d]) => %d : %d\n",offgainold,offgain,offgainnew,meanI*meanI+meanQ*meanQ);
meanIold = meanI;
meanQold = meanQ;
offgainold = offgain;
}
offgain = offgainnew;
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_FPGA_GAIN,offgain);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
// project on fs/8 (Image of TX signal in +ve frequencies)
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
meanI+= (calib_buff[j]*cos_fsover8[i&7] - calib_buff[j+1]*cos_fsover8[(i+2)&7])>>11;
meanQ+= (calib_buff[j]*cos_fsover8[(i+2)&7] + calib_buff[j+1]*cos_fsover8[i&7])>>11;
j+=2;
}
meanI/=RXDCLENGTH;
meanQ/=RXDCLENGTH;
// printf("[BRF] TX DC (offQ): %d => (%d,%d)\n",offQ,meanI,meanQ);
}
printf("[BRF] TX IQ offgain: %d => (%d,%d)\n",offgainold,meanIold,meanQold);
bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_FPGA_GAIN,offgainold);
}
// RX IQ imbalance
for (loop=0; loop<2; loop++) {
offphaseold=4096;
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_FPGA_PHASE,offphaseold);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
// project on -3fs/8 (Image of TX signal in -ve frequencies)
for (meanIold=meanQold=i=j=0; i<RXDCLENGTH; i++) {
meanIold+= (calib_buff[j]*cos_3fsover8[i&7] - calib_buff[j+1]*cos_3fsover8[(i+2)&7])>>11;
meanQold+= (calib_buff[j]*cos_3fsover8[(i+2)&7] + calib_buff[j+1]*cos_3fsover8[i&7])>>11;
j+=2;
}
meanIold/=RXDCLENGTH;
meanQold/=RXDCLENGTH;
printf("[BRF] RX IQ (offphase): %d => (%d,%d)\n",offphaseold,meanIold,meanQold);
offphase=-4096;
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_FPGA_PHASE,offphase);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
// project on -3fs/8 (Image of TX signal in -ve frequencies)
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
meanI+= (calib_buff[j]*cos_3fsover8[i&7] - calib_buff[j+1]*cos_3fsover8[(i+2)&7])>>11;
meanQ+= (calib_buff[j]*cos_3fsover8[(i+2)&7] + calib_buff[j+1]*cos_3fsover8[i&7])>>11;
j+=2;
}
meanI/=RXDCLENGTH;
meanQ/=RXDCLENGTH;
printf("[BRF] RX IQ (offphase): %d => (%d,%d)\n",offphase,meanI,meanQ);
cnt=0;
while (cnt++ < 13) {
offphasenew=(offphaseold+offphase)>>1;
printf("[BRF] RX IQ (offphase): ([%d,%d]) => %d : %d\n",offphaseold,offphase,offphasenew,meanI*meanI+meanQ*meanQ);
if (meanI*meanI+meanQ*meanQ < meanIold*meanIold +meanQold*meanQold) {
meanIold = meanI;
meanQold = meanQ;
offphaseold = offphase;
}
offphase = offphasenew;
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_FPGA_PHASE,offphase);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
// project on -3fs/8 (Image of TX signal in -ve frequencies)
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
meanI+= (calib_buff[j]*cos_3fsover8[i&7] - calib_buff[j+1]*cos_3fsover8[(i+2)&7])>>11;
meanQ+= (calib_buff[j]*cos_3fsover8[(i+2)&7] + calib_buff[j+1]*cos_3fsover8[i&7])>>11;
j+=2;
}
meanI/=RXDCLENGTH;
meanQ/=RXDCLENGTH;
// printf("[BRF] TX DC (offQ): %d => (%d,%d)\n",offQ,meanI,meanQ);
}
printf("[BRF] RX IQ offphase: %d => (%d,%d)\n",offphaseold,meanIold,meanQold);
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_FPGA_PHASE,offphaseold);
offgainold=4096;
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_FPGA_GAIN,offgainold);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0,0);
}
// project on -3fs/8 (Image of TX signal in +ve frequencies)
for (meanIold=meanQold=i=j=0; i<RXDCLENGTH; i++) {
meanIold+= (calib_buff[j]*cos_3fsover8[i&7] - calib_buff[j+1]*cos_3fsover8[(i+2)&7])>>11;
meanQold+= (calib_buff[j]*cos_3fsover8[(i+2)&7] + calib_buff[j+1]*cos_3fsover8[i&7])>>11;
j+=2;
}
meanIold/=RXDCLENGTH;
meanQold/=RXDCLENGTH;
printf("[BRF] RX IQ (offgain): %d => (%d,%d)\n",offgainold,meanIold,meanQold);
offgain=-4096;
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_FPGA_GAIN,offgain);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
// project on 3fs/8 (Image of TX signal in -ve frequencies)
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
meanI+= (calib_buff[j]*cos_3fsover8[i&7] - calib_buff[j+1]*cos_3fsover8[(i+2)&7])>>11;
meanQ+= (calib_buff[j]*cos_3fsover8[(i+2)&7] + calib_buff[j+1]*cos_3fsover8[i&7])>>11;
j+=2;
}
meanI/=RXDCLENGTH;
meanQ/=RXDCLENGTH;
printf("[BRF] RX IQ (offgain): %d => (%d,%d)\n",offgain,meanI,meanQ);
cnt=0;
while (cnt++ < 13) {
offgainnew=(offgainold+offgain)>>1;
if (meanI*meanI+meanQ*meanQ < meanIold*meanIold +meanQold*meanQold) {
printf("[BRF] RX IQ (offgain): ([%d,%d]) => %d : %d\n",offgainold,offgain,offgainnew,meanI*meanI+meanQ*meanQ);
meanIold = meanI;
meanQold = meanQ;
offgainold = offgain;
}
offgain = offgainnew;
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_FPGA_GAIN,offgain);
for (i=0; i<10; i++) {
trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
trx_brf_write(device,ptimestamp+5*RXDCLENGTH, (void **)&calib_tx_buffp, RXDCLENGTH, 0, 0);
}
// project on -3fs/8 (Image of TX signal in -ve frequencies)
for (meanI=meanQ=i=j=0; i<RXDCLENGTH; i++) {
meanI+= (calib_buff[j]*cos_3fsover8[i&7] - calib_buff[j+1]*cos_3fsover8[(i+2)&7])>>11;
meanQ+= (calib_buff[j]*cos_3fsover8[(i+2)&7] + calib_buff[j+1]*cos_3fsover8[i&7])>>11;
j+=2;
}
meanI/=RXDCLENGTH;
meanQ/=RXDCLENGTH;
// printf("[BRF] TX DC (offQ): %d => (%d,%d)\n",offQ,meanI,meanQ);
}
printf("[BRF] RX IQ offgain: %d => (%d,%d)\n",offgainold,meanIold,meanQold);
bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_FPGA_GAIN,offgainold);
}
bladerf_set_frequency(brf->dev,BLADERF_MODULE_TX, (unsigned int) device->openair0_cfg->tx_freq[0]);
bladerf_set_loopback(brf->dev,BLADERF_LB_NONE);
bladerf_set_gain(brf->dev, BLADERF_MODULE_RX, (unsigned int) device->openair0_cfg->rx_gain[0]-device->openair0_cfg[0].rx_gain_offset[0]);
bladerf_set_gain(brf->dev, BLADERF_MODULE_TX, (unsigned int) device->openair0_cfg->tx_gain[0]);
// LOG_M("blade_rf_test.m","rxs",calib_buff,RXDCLENGTH,1,1);
}
/*! \brief Initialize Openair BLADERF target. It returns 0 if OK
* \param device the hardware to use
* \param openair0_cfg RF frontend parameters set by application
@@ -969,7 +363,6 @@ int device_init(openair0_device_t *device, openair0_config_t *openair0_cfg)
exit(-1);
break;
}
openair0_cfg->rx_gain_calib_table = calib_table_fx4;
// The number of buffers to use in the underlying data stream
brf->num_buffers = 128;
@@ -1030,7 +423,6 @@ int device_init(openair0_device_t *device, openair0_config_t *openair0_cfg)
} else
printf("[BRF] set RX bandwidth to %u, %u\n",(unsigned int)openair0_cfg->rx_bw*2, actual_value);
set_rx_gain_offset(&openair0_cfg[0],0);
if ((status=bladerf_set_gain(brf->dev, BLADERF_MODULE_RX, (int) openair0_cfg->rx_gain[0]-openair0_cfg[0].rx_gain_offset[0])) != 0) {
fprintf(stderr,"Failed to set RX gain: %s\n",bladerf_strerror(status));
brf_error(status);
@@ -1097,24 +489,6 @@ int device_init(openair0_device_t *device, openair0_config_t *openair0_cfg)
} else
printf("[BRF] RX module enabled \n");
// calibrate
#if 0
/* those calls fail for "Nuand bladeRF 2.0 (bladerf2)", so commented,
* but let's keep the code in case it's needed (for other boards,
* for anything, unfortunately we don't have other boards to test
* right now)
*/
if ((status=bladerf_calibrate_dc(brf->dev, BLADERF_DC_CAL_LPF_TUNING)) != 0 ||
(status=bladerf_calibrate_dc(brf->dev, BLADERF_DC_CAL_TX_LPF)) != 0 ||
(status=bladerf_calibrate_dc(brf->dev, BLADERF_DC_CAL_RX_LPF)) != 0 ||
(status=bladerf_calibrate_dc(brf->dev, BLADERF_DC_CAL_RXVGA2)) != 0) {
fprintf(stderr, "[BRF] error calibrating\n");
brf_error(status);
} else
printf("[BRF] calibration OK\n");
#endif
/* set log to info, available log levels are:
* - BLADERF_LOG_LEVEL_VERBOSE
* - BLADERF_LOG_LEVEL_DEBUG
@@ -1141,8 +515,6 @@ int device_init(openair0_device_t *device, openair0_config_t *openair0_cfg)
device->openair0_cfg = openair0_cfg;
device->priv = (void *)brf;
calibrate_rf(device);
// memcpy((void*)&device->openair0_cfg,(void*)&openair0_cfg[0],sizeof(openair0_config_t));
if ((status=bladerf_enable_module(brf->dev, BLADERF_MODULE_TX, false)) != 0) {
@@ -1168,36 +540,4 @@ int brf_error(int status)
exit(-1);
return status; // or status error code
}
/*! \brief Open BladeRF from serial port
* \param serial name of serial port on which to open BladeRF device
* \returns bladerf device structure
*/
struct bladerf * open_bladerf_from_serial(const char *serial)
{
int status;
struct bladerf *dev;
struct bladerf_devinfo info;
/* Initialize all fields to "don't care" wildcard values.
*
* Immediately passing this to bladerf_open_with_devinfo() would cause
* libbladeRF to open any device on any available backend. */
bladerf_init_devinfo(&info);
/* Specify the desired device's serial number, while leaving all other
* fields in the info structure wildcard values */
strncpy(info.serial, serial, BLADERF_SERIAL_LENGTH - 1);
info.serial[BLADERF_SERIAL_LENGTH - 1] = '\0';
status = bladerf_open_with_devinfo(&dev, &info);
if (status == BLADERF_ERR_NODEV) {
printf("No devices available with serial=%s\n", serial);
return NULL;
} else if (status != 0) {
fprintf(stderr, "Failed to open device with serial=%s (%s)\n", serial, bladerf_strerror(status));
return NULL;
} else {
return dev;
}
}
/*@}*/
radio/BLADERF/bladerf_lib.h
-122
View File
@@ -1,122 +0,0 @@
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/** bladerf_lib.h
*
* Author: navid nikaein
*/
#ifndef BLADERF_LIB_H
#define BLADERF_LIB_H
#include <libbladeRF.h>
#include "common_lib.h"
/** @addtogroup _BLADERF_PHY_RF_INTERFACE_
* @{
*/
/*! \brief BladeRF specific data structure */
typedef struct {
//! opaque BladeRF device struct. An empty ("") or NULL device identifier will result in the first encountered device being opened (using the first discovered backend)
struct bladerf *dev;
//! Number of buffers
unsigned int num_buffers;
//! Buffer size
unsigned int buffer_size;
//! Number of transfers
unsigned int num_transfers;
//! RX timeout
unsigned int rx_timeout_ms;
//! TX timeout
unsigned int tx_timeout_ms;
//! Metadata for RX
struct bladerf_metadata meta_rx;
//!Metadata for TX
struct bladerf_metadata meta_tx;
//! Sample rate
unsigned int sample_rate;
//! time offset between transmiter timestamp and receiver timestamp;
double tdiff;
//! TX number of forward samples use brf_time_offset to get this value
int tx_forward_nsamps; //166 for 20Mhz
// --------------------------------
// Debug and output control
// --------------------------------
//! Number of underflows
int num_underflows;
//! Number of overflows
int num_overflows;
//! number of sequential errors
int num_seq_errors;
//! number of RX errors
int num_rx_errors;
//! Number of TX errors
int num_tx_errors;
//! timestamp of current TX
uint64_t tx_current_ts;
//! timestamp of current RX
uint64_t rx_current_ts;
//! number of actual samples transmitted
uint64_t tx_actual_nsamps;
//! number of actual samples received
uint64_t rx_actual_nsamps;
//! number of TX samples
uint64_t tx_nsamps;
//! number of RX samples
uint64_t rx_nsamps;
//! number of TX count
uint64_t tx_count;
//! number of RX count
uint64_t rx_count;
//! timestamp of RX packet
openair0_timestamp_t rx_timestamp;
} brf_state_t;
/*
* func prototypes
*/
/*! \brief BladeRF Init function (not used at the moment)
* \param device RF frontend parameters set by application
*/
int trx_brf_init(openair0_device_t *device);
/*! \brief get current timestamp
*\param device the hardware to use
*\param module the bladeRf module
*/
openair0_timestamp_t trx_get_timestamp(openair0_device_t *device, bladerf_module module);
/*! \brief bladeRF error report
* \param status
* \returns 0 on success
*/
int brf_error(int status);
/*@}*/
#endif /* BLADERF_LIB_H */