413 lines
14 KiB
C
413 lines
14 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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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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int trx_brf_init(openair0_device *openair0) {
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}
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openair0_timestamp trx_get_timestamp(openair0_device *device) {
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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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if ((status=bladerf_get_timestamp(brf->dev, BLADERF_MODULE_TX, &meta.timestamp)) != 0) {
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fprintf(stderr,"Failed to get current RX timestamp: %s\n",bladerf_strerror(status));
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} else {
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printf("Current TX timestampe 0x%016"PRIx64"\n", meta.timestamp);
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}
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return meta.timestamp;
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}
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int trx_brf_start(openair0_device *openair0) {
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return 0;
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}
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static void trx_brf_stats(openair0_device *device){
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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) {
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int status, i;
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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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void *samples = (void*)buff[0];
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//brf->meta_tx.flags &= ~BLADERF_META_FLAG_TX_NOW;
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brf->meta_tx.flags = BLADERF_META_FLAG_TX_BURST_START |
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BLADERF_META_FLAG_TX_NOW |
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BLADERF_META_FLAG_TX_BURST_END;
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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 (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("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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static int trx_brf_read(openair0_device *device, openair0_timestamp *ptimestamp, void **buff, int nsamps, int cc) {
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int status, ret;
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unsigned int i;
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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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void *samples = (void*)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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if (status != 0) {
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fprintf(stderr, "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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fprintf(stderr, "RX overrun (%d) is detected. t=0x%"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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//brf->meta_rx.timestamp=(unsigned int)(nsamps-brf->meta_rx.actual_count);
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}
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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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int 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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return 0;
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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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int trx_brf_reset_stats(openair0_device* device) {
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return(0);
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}
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int trx_brf_stop(openair0_device* device) {
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return(0);
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}
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int trx_brf_set_freq(openair0_device* device) {
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return(0);
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}
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int trx_brf_set_gains(openair0_device* device) {
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return(0);
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}
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int device_init(openair0_device *device, openair0_config_t *openair0_cfg, char *cfgfile) {
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int status;
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int card=0;
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brf_state_t *brf = (brf_state_t*)malloc(sizeof(brf_state_t));
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memset(brf, 0, sizeof(brf_state_t));
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// init required params for BRF
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brf->num_buffers = 128;
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brf->buffer_size = (unsigned int) openair0_cfg[card].samples_per_packet*sizeof(int32_t); // buffer size = 4096 for sample_len of 1024
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brf->num_transfers = 16;
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brf->rx_timeout_ms = 0;
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brf->tx_timeout_ms = 0;
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brf->sample_rate=(unsigned int)openair0_cfg[card].sample_rate;
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printf("\n[BRF] sampling_rate %d, num_buffers %d, buffer_size %d, num transfer %d, timeout_ms (rx %d, tx %d)\n",
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brf->sample_rate, brf->num_buffers, brf->buffer_size,brf->num_transfers, brf->rx_timeout_ms, brf->tx_timeout_ms);
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if ((status=bladerf_open(&brf->dev, "")) != 0 ) {
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fprintf(stderr,"Failed to open brf device: %s\n",bladerf_strerror(status));
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brf_error(status);
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}
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printf("[BRF] init dev %p\n", brf->dev);
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switch(bladerf_device_speed(brf->dev)){
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case BLADERF_DEVICE_SPEED_SUPER:
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printf("[BRF] Device operates at max speed\n");
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break;
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default:
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printf("[BRF] Device does not operates at max speed, change the USB port\n");
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brf_error(BLADERF_ERR_UNSUPPORTED);
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}
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// RX
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// Example of CLI output: RX Frequency: 2539999999Hz
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if ((status=bladerf_set_frequency(brf->dev, BLADERF_MODULE_RX, (unsigned int) openair0_cfg[card].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 %f\n",openair0_cfg[card].rx_freq[0]);
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if ((status=bladerf_set_sample_rate(brf->dev, BLADERF_MODULE_RX, (unsigned int)openair0_cfg[card].sample_rate, NULL)) != 0){
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fprintf(stderr,"Failed to set RX sample rate: %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 sample rate to %f\n",openair0_cfg[card].sample_rate);
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if ((status=bladerf_set_bandwidth(brf->dev, BLADERF_MODULE_RX, (unsigned int) openair0_cfg[card].rx_bw, NULL)) != 0){
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fprintf(stderr,"Failed to set RX bandwidth: %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 bandwidth to %f\n",openair0_cfg[card].rx_bw);
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if ((status=bladerf_set_gain(brf->dev, BLADERF_MODULE_RX, (int) openair0_cfg[card].rx_gain[0])) != 0) {
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fprintf(stderr,"Failed to set RX gain: %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 gain to %f\n",openair0_cfg[card].rx_gain[0]);
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/* Configure the device's RX module for use with the sync interface.
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* SC16 Q11 samples *with* metadata are used. */
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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 ) {
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fprintf(stderr,"Failed to configure RX sync interface: %s\n", bladerf_strerror(status));
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brf_error(status);
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}else
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printf("[BRF] configured Rx for sync interface \n");
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/* We must always enable the RX module after calling bladerf_sync_config(), and
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* before attempting to RX samples via bladerf_sync_rx(). */
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if ((status=bladerf_enable_module(brf->dev, BLADERF_MODULE_RX, true)) != 0) {
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fprintf(stderr,"Failed to enable RX module: %s\n", bladerf_strerror(status));
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brf_error(status);
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}else
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printf("[BRF] RX module enabled \n");
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// TX
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if ((status=bladerf_set_frequency(brf->dev, BLADERF_MODULE_TX, (unsigned int) openair0_cfg[card].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 Frequenct to %f \n", openair0_cfg[card].tx_freq[0]);
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if ((status=bladerf_set_sample_rate(brf->dev, BLADERF_MODULE_TX, (unsigned int) openair0_cfg[card].sample_rate, NULL)) != 0){
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fprintf(stderr,"Failed to set TX sample rate: %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 sampling rate to %f \n", openair0_cfg[card].sample_rate);
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if ((status=bladerf_set_bandwidth(brf->dev, BLADERF_MODULE_TX,(unsigned int)openair0_cfg[card].tx_bw, NULL)) != 0){
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fprintf(stderr, "Failed to set RX bandwidth: %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 sampling ratebandwidth to %f \n", openair0_cfg[card].tx_bw);
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if ((status=bladerf_set_gain(brf->dev, BLADERF_MODULE_TX, (int)openair0_cfg[card].tx_gain[0])) != 0) {
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fprintf(stderr,"Failed to set TX gain: %s\n",bladerf_strerror(status));
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brf_error(status);
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}else
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printf("[BRF] set the Tx gain to %f \n", openair0_cfg[card].tx_gain[0]);
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/* Configure the device's TX module for use with the sync interface.
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* SC16 Q11 samples *with* metadata are used. */
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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 ) {
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fprintf(stderr,"Failed to configure TX sync interface: %s\n", bladerf_strerror(status));
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brf_error(status);
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}else
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printf("[BRF] configured tx for sync interface \n");
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/* We must always enable the TX module after calling bladerf_sync_config(), and
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* before attempting to TX samples via bladerf_sync_tx(). */
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if ((status=bladerf_enable_module(brf->dev, BLADERF_MODULE_TX, true)) != 0) {
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fprintf(stderr,"Failed to enable TX module: %s\n", bladerf_strerror(status));
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brf_error(status);
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} else
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printf("[BRF] TX module enabled \n");
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bladerf_log_set_verbosity(get_brf_log_level(openair0_cfg[card].log_level));
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printf("BLADERF: Initializing openair0_device\n");
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device->priv = brf;
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device->Mod_id = num_devices++;
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device->type = BLADERF_DEV;
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device->trx_start_func = trx_brf_start;
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device->trx_end_func = trx_brf_end;
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device->trx_read_func = trx_brf_read;
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device->trx_write_func = trx_brf_write;
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device->trx_get_stats_func = trx_brf_get_stats;
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device->trx_reset_stats_func = trx_brf_reset_stats;
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device->trx_stop_func = trx_brf_stop;
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device->trx_set_freq_func = trx_brf_set_freq;
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device->trx_set_gains_func = trx_brf_set_gains;
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if(brf->sample_rate==30.72e6) {
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openair0_cfg->tx_delay = 8;
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openair0_cfg->tx_forward_nsamps = 175;
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brf->tx_forward_nsamps = 175;
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}
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if(brf->sample_rate==15.36e6) {
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openair0_cfg->tx_delay = 5;
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openair0_cfg->tx_forward_nsamps = 95;
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brf->tx_forward_nsamps = 95;
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}
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if(brf->sample_rate==7.68e6) {
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openair0_cfg->tx_delay = 8;
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openair0_cfg->tx_forward_nsamps = 0;
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brf->tx_forward_nsamps = 0;
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}
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if(brf->sample_rate==1.92e6) {
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openair0_cfg->tx_delay = 8;
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openair0_cfg->tx_forward_nsamps = 40;
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brf->tx_forward_nsamps = 40;
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}
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openair0_cfg->iq_txshift= 0;
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openair0_cfg->iq_rxrescale = 15;
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memcpy((void*)&device->openair0_cfg,(void*)openair0_cfg,sizeof(openair0_config_t));
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return 0;
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}
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int brf_error(int status) {
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//exit(-1);
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//return 1; // or status error code
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}
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struct bladerf * open_bladerf_from_serial(const char *serial) {
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int status;
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struct bladerf *dev;
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struct bladerf_devinfo info;
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/* Initialize all fields to "don't care" wildcard values.
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*
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* Immediately passing this to bladerf_open_with_devinfo() would cause
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* libbladeRF to open any device on any available backend. */
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bladerf_init_devinfo(&info);
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/* Specify the desired device's serial number, while leaving all other
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* fields in the info structure wildcard values */
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strncpy(info.serial, serial, BLADERF_SERIAL_LENGTH - 1);
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info.serial[BLADERF_SERIAL_LENGTH - 1] = '\0';
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status = bladerf_open_with_devinfo(&dev, &info);
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if (status == BLADERF_ERR_NODEV) {
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printf("No devices available with serial=%s\n", serial);
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return NULL;
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} else if (status != 0) {
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fprintf(stderr, "Failed to open device with serial=%s (%s)\n", serial, bladerf_strerror(status));
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return NULL;
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} else {
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return dev;
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}
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}
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int get_brf_log_level(int log_level){
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int level=BLADERF_LOG_LEVEL_INFO;
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//return BLADERF_LOG_LEVEL_DEBUG;
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switch(log_level) {
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case LOG_DEBUG:
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level=BLADERF_LOG_LEVEL_DEBUG;
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break;
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case LOG_INFO:
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level= BLADERF_LOG_LEVEL_INFO;
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break;
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case LOG_WARNING:
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level=BLADERF_LOG_LEVEL_WARNING;
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break;
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case LOG_ERR:
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level=BLADERF_LOG_LEVEL_ERROR;
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break;
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case LOG_CRIT:
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level=BLADERF_LOG_LEVEL_CRITICAL;
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break;
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case LOG_EMERG:
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level = BLADERF_LOG_LEVEL_SILENT;
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break;
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default:
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break;
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}
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return level;
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}
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