1174 lines
42 KiB
C
1174 lines
42 KiB
C
/*******************************************************************************
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OpenAirInterface
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Copyright(c) 1999 - 2014 Eurecom
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OpenAirInterface is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenAirInterface is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenAirInterface.The full GNU General Public License is
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included in this distribution in the file called "COPYING". If not,
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see <http://www.gnu.org/licenses/>.
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Contact Information
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OpenAirInterface Admin: openair_admin@eurecom.fr
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OpenAirInterface Tech : openair_tech@eurecom.fr
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OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
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Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
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*******************************************************************************/
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/** bladerf_lib.c
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*
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* Author: navid nikaein
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include "bladerf_lib.h"
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#include "math.h"
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/** @addtogroup _BLADERF_PHY_RF_INTERFACE_
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* @{
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*/
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//! Number of BladeRF devices
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#ifdef __SSE4_1__
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# include <smmintrin.h>
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#endif
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#ifdef __AVX2__
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# include <immintrin.h>
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#endif
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int num_devices=0;
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/*These items configure the underlying asynch stream used by the the sync interface.
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*/
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/*! \brief BladeRF Init function (not used at the moment)
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* \param device RF frontend parameters set by application
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* \returns 0 on success
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*/
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int trx_brf_init(openair0_device *device) {
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return 0;
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}
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/*! \brief get current timestamp
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*\param device the hardware to use
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*\param module the bladeRf module
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*\returns timestamp of BladeRF
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*/
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openair0_timestamp trx_get_timestamp(openair0_device *device, bladerf_module module) {
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int status;
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struct bladerf_metadata meta;
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brf_state_t *brf = (brf_state_t*)device->priv;
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memset(&meta, 0, sizeof(meta));
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if ((status=bladerf_get_timestamp(brf->dev, module, &meta.timestamp)) != 0) {
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fprintf(stderr,"Failed to get current %s timestamp: %s\n",(module == BLADERF_MODULE_RX ) ? "RX" : "TX", bladerf_strerror(status));
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return -1;
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} // else {printf("Current RX timestampe 0x%016"PRIx64"\n", meta.timestamp); }
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return meta.timestamp;
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}
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/*! \brief Start BladeRF
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* \param device the hardware to use
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* \returns 0 on success
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*/
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int trx_brf_start(openair0_device *device) {
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return 0;
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}
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/*! \brief Called to send samples to the BladeRF RF target
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\param device pointer to the device structure specific to the RF hardware target
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\param timestamp The timestamp at whicch the first sample MUST be sent
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\param buff Buffer which holds the samples
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\param nsamps number of samples to be sent
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\param cc index of the component carrier
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\param flags Ignored for the moment
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\returns 0 on success
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*/
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static int trx_brf_write(openair0_device *device,openair0_timestamp ptimestamp, void **buff, int nsamps, int cc, int flags) {
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int status;
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brf_state_t *brf = (brf_state_t*)device->priv;
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/* BRF has only 1 rx/tx chaine : is it correct? */
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int16_t *samples = (int16_t*)buff[0];
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//memset(&brf->meta_tx, 0, sizeof(brf->meta_tx));
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// When BLADERF_META_FLAG_TX_NOW is used the timestamp is not used, so one can't schedule a tx
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if (brf->meta_tx.flags == 0 )
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brf->meta_tx.flags = (BLADERF_META_FLAG_TX_BURST_START);// | BLADERF_META_FLAG_TX_BURST_END);// | BLADERF_META_FLAG_TX_NOW);
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brf->meta_tx.timestamp= (uint64_t) (ptimestamp);
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status = bladerf_sync_tx(brf->dev, samples, (unsigned int) nsamps, &brf->meta_tx, 2*brf->tx_timeout_ms);
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if (brf->meta_tx.flags == BLADERF_META_FLAG_TX_BURST_START)
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brf->meta_tx.flags = BLADERF_META_FLAG_TX_UPDATE_TIMESTAMP;
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if (status != 0) {
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//fprintf(stderr,"Failed to TX sample: %s\n", bladerf_strerror(status));
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brf->num_tx_errors++;
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brf_error(status);
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} else if (brf->meta_tx.status & BLADERF_META_STATUS_UNDERRUN){
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/* libbladeRF does not report this status. It is here for future use. */
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fprintf(stderr, "TX Underrun detected. %u valid samples were read.\n", brf->meta_tx.actual_count);
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brf->num_underflows++;
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}
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//printf("Provided TX timestampe %u, meta timestame %u\n", ptimestamp,brf->meta_tx.timestamp);
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// printf("tx status %d \n",brf->meta_tx.status);
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brf->tx_current_ts=brf->meta_tx.timestamp;
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brf->tx_actual_nsamps+=brf->meta_tx.actual_count;
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brf->tx_nsamps+=nsamps;
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brf->tx_count++;
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return(0);
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}
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/*! \brief Receive samples from hardware.
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* Read \ref nsamps samples from each channel to buffers. buff[0] is the array for
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* the first channel. *ptimestamp is the time at which the first sample
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* was received.
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* \param device the hardware to use
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* \param[out] ptimestamp the time at which the first sample was received.
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* \param[out] buff An array of pointers to buffers for received samples. The buffers must be large enough to hold the number of samples \ref nsamps.
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* \param nsamps Number of samples. One sample is 2 byte I + 2 byte Q => 4 byte.
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* \param cc Index of component carrier
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* \returns number of samples read
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*/
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static int trx_brf_read(openair0_device *device, openair0_timestamp *ptimestamp, void **buff, int nsamps, int cc) {
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int status=0;
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brf_state_t *brf = (brf_state_t*)device->priv;
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// BRF has only one rx/tx chain
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int16_t *samples = (int16_t*)buff[0];
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brf->meta_rx.flags = BLADERF_META_FLAG_RX_NOW;
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status = bladerf_sync_rx(brf->dev, samples, (unsigned int) nsamps, &brf->meta_rx, 2*brf->rx_timeout_ms);
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// printf("Current RX timestampe %u, nsamps %u, actual %u, cc %d\n", brf->meta_rx.timestamp, nsamps, brf->meta_rx.actual_count, cc);
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if (status != 0) {
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fprintf(stderr, "RX failed: %s\n", bladerf_strerror(status));
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// printf("RX failed: %s\n", bladerf_strerror(status));
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brf->num_rx_errors++;
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} else if ( brf->meta_rx.status & BLADERF_META_STATUS_OVERRUN) {
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brf->num_overflows++;
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printf("RX overrun (%d) is detected. t=" "%" PRIu64 "Got %u samples. nsymps %d\n",
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brf->num_overflows,brf->meta_rx.timestamp, brf->meta_rx.actual_count, nsamps);
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}
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//printf("Current RX timestampe %u\n", brf->meta_rx.timestamp);
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//printf("[BRF] (buff %p) ts=0x%"PRIu64" %s\n",samples, brf->meta_rx.timestamp,bladerf_strerror(status));
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brf->rx_current_ts=brf->meta_rx.timestamp;
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brf->rx_actual_nsamps+=brf->meta_rx.actual_count;
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brf->rx_nsamps+=nsamps;
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brf->rx_count++;
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*ptimestamp = brf->meta_rx.timestamp;
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return brf->meta_rx.actual_count;
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}
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/*! \brief Terminate operation of the BladeRF transceiver -- free all associated resources
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* \param device the hardware to use
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*/
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void trx_brf_end(openair0_device *device) {
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int status;
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brf_state_t *brf = (brf_state_t*)device->priv;
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// Disable RX module, shutting down our underlying RX stream
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if ((status=bladerf_enable_module(brf->dev, BLADERF_MODULE_RX, false)) != 0) {
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fprintf(stderr, "Failed to disable RX module: %s\n", bladerf_strerror(status));
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}
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if ((status=bladerf_enable_module(brf->dev, BLADERF_MODULE_TX, false)) != 0) {
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fprintf(stderr, "Failed to disable TX module: %s\n", bladerf_strerror(status));
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}
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bladerf_close(brf->dev);
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}
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/*! \brief print the BladeRF statistics
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* \param device the hardware to use
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* \returns 0 on success
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*/
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int trx_brf_get_stats(openair0_device* device) {
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return(0);
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}
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/*! \brief Reset the BladeRF statistics
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* \param device the hardware to use
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* \returns 0 on success
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*/
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int trx_brf_reset_stats(openair0_device* device) {
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return(0);
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}
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/*! \brief Stop BladeRF
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* \param card the hardware to use
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* \returns 0 in success
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*/
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int trx_brf_stop(int card) {
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return(0);
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}
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/*! \brief Set frequencies (TX/RX)
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* \param device the hardware to use
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* \param openair0_cfg1 openair0 Config structure (ignored. It is there to comply with RF common API)
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* \param exmimo_dump_config (ignored)
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* \returns 0 in success
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*/
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int trx_brf_set_freq(openair0_device* device, openair0_config_t *openair0_cfg1,int exmimo_dump_config) {
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int status;
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brf_state_t *brf = (brf_state_t *)device->priv;
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openair0_config_t *openair0_cfg = (openair0_config_t *)device->openair0_cfg;
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if ((status=bladerf_set_frequency(brf->dev, BLADERF_MODULE_TX, (unsigned int) openair0_cfg->tx_freq[0])) != 0){
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fprintf(stderr,"Failed to set TX frequency: %s\n",bladerf_strerror(status));
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brf_error(status);
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}else
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printf("[BRF] set TX Frequency to %u\n", (unsigned int) openair0_cfg->tx_freq[0]);
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if ((status=bladerf_set_frequency(brf->dev, BLADERF_MODULE_RX, (unsigned int) openair0_cfg->rx_freq[0])) != 0){
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fprintf(stderr,"Failed to set RX frequency: %s\n",bladerf_strerror(status));
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brf_error(status);
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} else
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printf("[BRF] set RX frequency to %u\n",(unsigned int)openair0_cfg->rx_freq[0]);
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return(0);
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}
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/*! \brief Set Gains (TX/RX)
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* \param device the hardware to use
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* \param openair0_cfg openair0 Config structure
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* \returns 0 in success
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*/
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int trx_brf_set_gains(openair0_device* device, openair0_config_t *openair0_cfg) {
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return(0);
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}
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#define RXDCLENGTH 16384
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int16_t cos_fsover8[8] = {2047, 1447, 0, -1448, -2047, -1448, 0, 1447};
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int16_t cos_3fsover8[8] = {2047, -1448, 0, 1447, -2047, 1447, 0, -1448};
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/*! \brief calibration table for BladeRF */
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rx_gain_calib_table_t calib_table_fx4[] = {
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{2300000000.0,53.5},
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{1880000000.0,57.0},
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{816000000.0,73.0},
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{-1,0}};
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/*! \brief set RX gain offset from calibration table
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* \param openair0_cfg RF frontend parameters set by application
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* \param chain_index RF chain ID
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*/
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void set_rx_gain_offset(openair0_config_t *openair0_cfg, int chain_index) {
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int i=0;
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// loop through calibration table to find best adjustment factor for RX frequency
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double min_diff = 6e9,diff;
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while (openair0_cfg->rx_gain_calib_table[i].freq>0) {
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diff = fabs(openair0_cfg->rx_freq[chain_index] - openair0_cfg->rx_gain_calib_table[i].freq);
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printf("cal %d: freq %f, offset %f, diff %f\n",
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i,
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openair0_cfg->rx_gain_calib_table[i].freq,
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openair0_cfg->rx_gain_calib_table[i].offset,diff);
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if (min_diff > diff) {
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min_diff = diff;
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openair0_cfg->rx_gain_offset[chain_index] = openair0_cfg->rx_gain_calib_table[i].offset;
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}
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i++;
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}
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}
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/*! \brief Calibrate LMSSDR RF
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* \param device the hardware to use
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*/
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void calibrate_rf(openair0_device *device) {
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brf_state_t *brf = (brf_state_t *)device->priv;
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openair0_timestamp ptimestamp;
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int16_t *calib_buffp,*calib_tx_buffp;
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int16_t calib_buff[2*RXDCLENGTH];
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int16_t calib_tx_buff[2*RXDCLENGTH];
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int i,j,offI,offQ,offIold,offQold,offInew,offQnew,offphase,offphaseold,offphasenew,offgain,offgainold,offgainnew;
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int32_t meanI,meanQ,meanIold,meanQold;
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int cnt=0,loop;
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// put TX on a far-away frequency to avoid interference in RX band
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bladerf_set_frequency(brf->dev,BLADERF_MODULE_TX, (unsigned int) device->openair0_cfg->rx_freq[0] + 200e6);
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// Set gains to close to max
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bladerf_set_gain(brf->dev, BLADERF_MODULE_RX, 60);
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bladerf_set_gain(brf->dev, BLADERF_MODULE_TX, 60);
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// fill TX buffer with fs/8 complex sinusoid
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j=0;
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for (i=0;i<RXDCLENGTH;i++) {
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calib_tx_buff[j++] = cos_fsover8[i&7];
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calib_tx_buff[j++] = cos_fsover8[(i+6)&7]; // sin
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}
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calib_buffp = &calib_buff[0];
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calib_tx_buffp = &calib_tx_buff[0];
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// Calibrate RX DC offset
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offIold=offQold=2048;
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bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_I,offIold);
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bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_Q,offQold);
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for (i=0;i<10;i++)
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trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
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for (meanIold=meanQold=i=j=0;i<RXDCLENGTH;i++) {
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meanIold+=calib_buff[j++];
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meanQold+=calib_buff[j++];
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}
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meanIold/=RXDCLENGTH;
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meanQold/=RXDCLENGTH;
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printf("[BRF] RX DC: (%d,%d) => (%d,%d)\n",offIold,offQold,meanIold,meanQold);
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offI=offQ=-2048;
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bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_I,offI);
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bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_Q,offQ);
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for (i=0;i<10;i++)
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trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
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for (meanI=meanQ=i=j=0;i<RXDCLENGTH;i++) {
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meanI+=calib_buff[j++];
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meanQ+=calib_buff[j++];
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}
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meanI/=RXDCLENGTH;
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meanQ/=RXDCLENGTH;
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// printf("[BRF] RX DC: (%d,%d) => (%d,%d)\n",offI,offQ,meanI,meanQ);
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while (cnt++ < 12) {
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offInew=(offIold+offI)>>1;
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offQnew=(offQold+offQ)>>1;
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if (meanI*meanI < meanIold*meanIold) {
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meanIold = meanI;
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offIold = offI;
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printf("[BRF] *** RX DC: offI %d => %d\n",offIold,meanI);
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}
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if (meanQ*meanQ < meanQold*meanQold) {
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meanQold = meanQ;
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offQold = offQ;
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printf("[BRF] *** RX DC: offQ %d => %d\n",offQold,meanQ);
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}
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offI = offInew;
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offQ = offQnew;
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bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_I,offI);
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bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_Q,offQ);
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for (i=0;i<10;i++)
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trx_brf_read(device, &ptimestamp, (void **)&calib_buffp, RXDCLENGTH, 0);
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for (meanI=meanQ=i=j=0;i<RXDCLENGTH;i++) {
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meanI+=calib_buff[j++];
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meanQ+=calib_buff[j++];
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}
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meanI/=RXDCLENGTH;
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meanQ/=RXDCLENGTH;
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printf("[BRF] RX DC: (%d,%d) => (%d,%d)\n",offI,offQ,meanI,meanQ);
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}
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printf("[BRF] RX DC: (%d,%d) => (%d,%d)\n",offIold,offQold,meanIold,meanQold);
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bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_I,offIold);
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bladerf_set_correction(brf->dev,BLADERF_MODULE_RX,BLADERF_CORR_LMS_DCOFF_Q,offQold);
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// TX DC offset
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// PUT TX as f_RX + fs/4
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// loop back BLADERF_LB_RF_LNA1
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bladerf_set_frequency(brf->dev,BLADERF_MODULE_TX, (unsigned int) device->openair0_cfg->rx_freq[0] + (unsigned int) device->openair0_cfg->sample_rate/4);
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bladerf_set_loopback (brf->dev,BLADERF_LB_RF_LNA1);
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offIold=2048;
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bladerf_set_correction(brf->dev,BLADERF_MODULE_TX,BLADERF_CORR_LMS_DCOFF_I,offIold);
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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]);
|
|
// write_output("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
|
|
* \returns 0 on success
|
|
*/
|
|
int device_init(openair0_device *device, openair0_config_t *openair0_cfg) {
|
|
int status;
|
|
brf_state_t *brf = (brf_state_t*)malloc(sizeof(brf_state_t));
|
|
memset(brf, 0, sizeof(brf_state_t));
|
|
/* device specific */
|
|
openair0_cfg->txlaunch_wait = 1;//manage when TX processing is triggered
|
|
openair0_cfg->txlaunch_wait_slotcount = 1; //manage when TX processing is triggered
|
|
openair0_cfg->iq_txshift = 0;// shift
|
|
openair0_cfg->iq_rxrescale = 15;//rescale iqs
|
|
|
|
// init required params
|
|
switch ((int)openair0_cfg->sample_rate) {
|
|
case 30720000:
|
|
openair0_cfg->samples_per_packet = 2048;
|
|
openair0_cfg->tx_sample_advance = 0;
|
|
openair0_cfg->tx_scheduling_advance = 8*openair0_cfg->samples_per_packet;
|
|
break;
|
|
case 15360000:
|
|
openair0_cfg->samples_per_packet = 2048;
|
|
openair0_cfg->tx_sample_advance = 0;
|
|
openair0_cfg->tx_scheduling_advance = 4*openair0_cfg->samples_per_packet;
|
|
break;
|
|
case 7680000:
|
|
openair0_cfg->samples_per_packet = 1024;
|
|
openair0_cfg->tx_sample_advance = 0;
|
|
openair0_cfg->tx_scheduling_advance = 4*openair0_cfg->samples_per_packet;
|
|
break;
|
|
case 1920000:
|
|
openair0_cfg->samples_per_packet = 256;
|
|
openair0_cfg->tx_sample_advance = 50;
|
|
openair0_cfg->tx_scheduling_advance = 8*openair0_cfg->samples_per_packet;
|
|
break;
|
|
default:
|
|
printf("Error: unknown sampling rate %f\n",openair0_cfg->sample_rate);
|
|
exit(-1);
|
|
break;
|
|
}
|
|
openair0_cfg->iq_txshift= 0;
|
|
openair0_cfg->iq_rxrescale = 15; /*not sure*/
|
|
openair0_cfg->rx_gain_calib_table = calib_table_fx4;
|
|
|
|
// The number of buffers to use in the underlying data stream
|
|
brf->num_buffers = 128;
|
|
// the size of the underlying stream buffers, in samples
|
|
brf->buffer_size = (unsigned int) openair0_cfg->samples_per_packet;//*sizeof(int32_t); // buffer size = 4096 for sample_len of 1024
|
|
brf->num_transfers = 16;
|
|
brf->rx_timeout_ms = 0;
|
|
brf->tx_timeout_ms = 0;
|
|
brf->sample_rate=(unsigned int)openair0_cfg->sample_rate;
|
|
|
|
memset(&brf->meta_rx, 0, sizeof(brf->meta_rx));
|
|
memset(&brf->meta_tx, 0, sizeof(brf->meta_tx));
|
|
|
|
printf("\n[BRF] sampling_rate %d, num_buffers %d, buffer_size %d, num transfer %d, timeout_ms (rx %d, tx %d)\n",
|
|
brf->sample_rate, brf->num_buffers, brf->buffer_size,brf->num_transfers, brf->rx_timeout_ms, brf->tx_timeout_ms);
|
|
|
|
if ((status=bladerf_open(&brf->dev, "")) != 0 ) {
|
|
fprintf(stderr,"Failed to open brf device: %s\n",bladerf_strerror(status));
|
|
brf_error(status);
|
|
}
|
|
printf("[BRF] init dev %p\n", brf->dev);
|
|
switch(bladerf_device_speed(brf->dev)){
|
|
case BLADERF_DEVICE_SPEED_SUPER:
|
|
printf("[BRF] Device operates at max speed\n");
|
|
break;
|
|
default:
|
|
printf("[BRF] Device does not operates at max speed, change the USB port\n");
|
|
brf_error(BLADERF_ERR_UNSUPPORTED);
|
|
}
|
|
// RX
|
|
// Example of CLI output: RX Frequency: 2539999999Hz
|
|
|
|
if ((status=bladerf_set_frequency(brf->dev, BLADERF_MODULE_RX, (unsigned int) openair0_cfg->rx_freq[0])) != 0){
|
|
fprintf(stderr,"Failed to set RX frequency: %s\n",bladerf_strerror(status));
|
|
brf_error(status);
|
|
} else
|
|
printf("[BRF] set RX frequency to %u\n",(unsigned int)openair0_cfg->rx_freq[0]);
|
|
|
|
|
|
|
|
unsigned int actual_value=0;
|
|
if ((status=bladerf_set_sample_rate(brf->dev, BLADERF_MODULE_RX, (unsigned int) openair0_cfg->sample_rate, &actual_value)) != 0){
|
|
fprintf(stderr,"Failed to set RX sample rate: %s\n", bladerf_strerror(status));
|
|
brf_error(status);
|
|
}else
|
|
printf("[BRF] set RX sample rate to %u, %u\n", (unsigned int) openair0_cfg->sample_rate, actual_value);
|
|
|
|
|
|
if ((status=bladerf_set_bandwidth(brf->dev, BLADERF_MODULE_RX, (unsigned int) openair0_cfg->rx_bw*2, &actual_value)) != 0){
|
|
fprintf(stderr,"Failed to set RX bandwidth: %s\n", bladerf_strerror(status));
|
|
brf_error(status);
|
|
}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);
|
|
} else
|
|
printf("[BRF] set RX gain to %d (%d)\n",(int)(openair0_cfg->rx_gain[0]-openair0_cfg[0].rx_gain_offset[0]),(int)openair0_cfg[0].rx_gain_offset[0]);
|
|
|
|
// TX
|
|
|
|
if ((status=bladerf_set_frequency(brf->dev, BLADERF_MODULE_TX, (unsigned int) openair0_cfg->tx_freq[0])) != 0){
|
|
fprintf(stderr,"Failed to set TX frequency: %s\n",bladerf_strerror(status));
|
|
brf_error(status);
|
|
}else
|
|
printf("[BRF] set TX Frequency to %u\n", (unsigned int) openair0_cfg->tx_freq[0]);
|
|
|
|
if ((status=bladerf_set_sample_rate(brf->dev, BLADERF_MODULE_TX, (unsigned int) openair0_cfg->sample_rate, NULL)) != 0){
|
|
fprintf(stderr,"Failed to set TX sample rate: %s\n", bladerf_strerror(status));
|
|
brf_error(status);
|
|
}else
|
|
printf("[BRF] set TX sampling rate to %u \n", (unsigned int) openair0_cfg->sample_rate);
|
|
|
|
if ((status=bladerf_set_bandwidth(brf->dev, BLADERF_MODULE_TX,(unsigned int)openair0_cfg->tx_bw*2, NULL)) != 0){
|
|
fprintf(stderr, "Failed to set TX bandwidth: %s\n", bladerf_strerror(status));
|
|
brf_error(status);
|
|
}else
|
|
printf("[BRF] set TX bandwidth to %u \n", (unsigned int) openair0_cfg->tx_bw*2);
|
|
|
|
if ((status=bladerf_set_gain(brf->dev, BLADERF_MODULE_TX, (int) openair0_cfg->tx_gain[0])) != 0) {
|
|
fprintf(stderr,"Failed to set TX gain: %s\n",bladerf_strerror(status));
|
|
brf_error(status);
|
|
}else
|
|
printf("[BRF] set the TX gain to %d\n", (int)openair0_cfg->tx_gain[0]);
|
|
|
|
|
|
/* Configure the device's TX module for use with the sync interface.
|
|
* SC16 Q11 samples *with* metadata are used. */
|
|
if ((status=bladerf_sync_config(brf->dev, BLADERF_MODULE_TX,BLADERF_FORMAT_SC16_Q11_META,brf->num_buffers,brf->buffer_size,brf->num_transfers,brf->tx_timeout_ms)) != 0 ) {
|
|
fprintf(stderr,"Failed to configure TX sync interface: %s\n", bladerf_strerror(status));
|
|
brf_error(status);
|
|
}else
|
|
printf("[BRF] configured TX sync interface \n");
|
|
|
|
/* Configure the device's RX module for use with the sync interface.
|
|
* SC16 Q11 samples *with* metadata are used. */
|
|
if ((status=bladerf_sync_config(brf->dev, BLADERF_MODULE_RX, BLADERF_FORMAT_SC16_Q11_META,brf->num_buffers,brf->buffer_size,brf->num_transfers,brf->rx_timeout_ms)) != 0 ) {
|
|
fprintf(stderr,"Failed to configure RX sync interface: %s\n", bladerf_strerror(status));
|
|
brf_error(status);
|
|
}else
|
|
printf("[BRF] configured Rx sync interface \n");
|
|
|
|
|
|
/* We must always enable the TX module after calling bladerf_sync_config(), and
|
|
* before attempting to TX samples via bladerf_sync_tx(). */
|
|
if ((status=bladerf_enable_module(brf->dev, BLADERF_MODULE_TX, true)) != 0) {
|
|
fprintf(stderr,"Failed to enable TX module: %s\n", bladerf_strerror(status));
|
|
brf_error(status);
|
|
} else
|
|
printf("[BRF] TX module enabled \n");
|
|
|
|
/* We must always enable the RX module after calling bladerf_sync_config(), and
|
|
* before attempting to RX samples via bladerf_sync_rx(). */
|
|
if ((status=bladerf_enable_module(brf->dev, BLADERF_MODULE_RX, true)) != 0) {
|
|
fprintf(stderr,"Failed to enable RX module: %s\n", bladerf_strerror(status));
|
|
brf_error(status);
|
|
}else
|
|
printf("[BRF] RX module enabled \n");
|
|
|
|
// calibrate
|
|
|
|
if ((status=bladerf_calibrate_dc(brf->dev, BLADERF_MODULE_TX)) != 0) {
|
|
fprintf(stderr,"Failed to calibrate TX DC: %s\n", bladerf_strerror(status));
|
|
brf_error(status);
|
|
} else
|
|
printf("[BRF] TX module calibrated DC \n");
|
|
|
|
if ((status=bladerf_calibrate_dc(brf->dev, BLADERF_MODULE_RX)) != 0) {
|
|
fprintf(stderr,"Failed to calibrate RX DC: %s\n", bladerf_strerror(status));
|
|
brf_error(status);
|
|
}else
|
|
printf("[BRF] RX module calibrated DC \n");
|
|
|
|
bladerf_log_set_verbosity(get_brf_log_level(openair0_cfg->log_level));
|
|
|
|
printf("BLADERF: Initializing openair0_device\n");
|
|
device->Mod_id = num_devices++;
|
|
device->type = BLADERF_DEV;
|
|
device->trx_start_func = trx_brf_start;
|
|
device->trx_end_func = trx_brf_end;
|
|
device->trx_read_func = trx_brf_read;
|
|
device->trx_write_func = trx_brf_write;
|
|
device->trx_get_stats_func = trx_brf_get_stats;
|
|
device->trx_reset_stats_func = trx_brf_reset_stats;
|
|
device->trx_stop_func = trx_brf_stop;
|
|
device->trx_set_freq_func = trx_brf_set_freq;
|
|
device->trx_set_gains_func = trx_brf_set_gains;
|
|
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));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*! \brief bladeRF error report
|
|
* \param status
|
|
* \returns 0 on success
|
|
*/
|
|
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;
|
|
}
|
|
}
|
|
|
|
/*! \brief Get BladeRF log level
|
|
* \param log_level log level
|
|
* \returns log level of BLADERF device
|
|
*/
|
|
int get_brf_log_level(int log_level){
|
|
|
|
int level=BLADERF_LOG_LEVEL_INFO;
|
|
return BLADERF_LOG_LEVEL_DEBUG; // BLADERF_LOG_LEVEL_VERBOSE;// BLADERF_LOG_LEVEL_DEBUG; //
|
|
switch(log_level) {
|
|
case LOG_DEBUG:
|
|
level=BLADERF_LOG_LEVEL_DEBUG;
|
|
break;
|
|
case LOG_INFO:
|
|
level= BLADERF_LOG_LEVEL_INFO;
|
|
break;
|
|
case LOG_WARNING:
|
|
level=BLADERF_LOG_LEVEL_WARNING;
|
|
break;
|
|
case LOG_ERR:
|
|
level=BLADERF_LOG_LEVEL_ERROR;
|
|
break;
|
|
case LOG_CRIT:
|
|
level=BLADERF_LOG_LEVEL_CRITICAL;
|
|
break;
|
|
case LOG_EMERG:
|
|
level = BLADERF_LOG_LEVEL_SILENT;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return level;
|
|
}
|
|
/*@}*/
|