add zmq-based rf driver

master
Andre Puschmann 6 years ago
parent f2266bb264
commit c6e19645af

@ -71,6 +71,7 @@ option(ENABLE_GUI "Enable GUI (using srsGUI)" ON)
option(ENABLE_UHD "Enable UHD" ON) option(ENABLE_UHD "Enable UHD" ON)
option(ENABLE_BLADERF "Enable BladeRF" ON) option(ENABLE_BLADERF "Enable BladeRF" ON)
option(ENABLE_SOAPYSDR "Enable SoapySDR" ON) option(ENABLE_SOAPYSDR "Enable SoapySDR" ON)
option(ENABLE_ZEROMQ "Enable ZeroMQ" ON)
option(ENABLE_HARDSIM "Enable support for SIM cards" ON) option(ENABLE_HARDSIM "Enable support for SIM cards" ON)
option(BUILD_STATIC "Attempt to statically link external deps" OFF) option(BUILD_STATIC "Attempt to statically link external deps" OFF)
@ -175,12 +176,21 @@ if(ENABLE_SOAPYSDR)
endif(SOAPYSDR_FOUND) endif(SOAPYSDR_FOUND)
endif(ENABLE_SOAPYSDR) endif(ENABLE_SOAPYSDR)
if(BLADERF_FOUND OR UHD_FOUND OR SOAPYSDR_FOUND) # ZeroMQ
if(ENABLE_ZEROMQ)
find_package(ZeroMQ)
if(ZEROMQ_FOUND)
include_directories(${ZEROMQ_INCLUDE_DIRS})
link_directories(${ZEROMQ_LIBRARY_DIRS})
endif(ZEROMQ_FOUND)
endif(ENABLE_ZEROMQ)
if(BLADERF_FOUND OR UHD_FOUND OR SOAPYSDR_FOUND OR ZEROMQ_FOUND)
set(RF_FOUND TRUE CACHE INTERNAL "RF frontend found") set(RF_FOUND TRUE CACHE INTERNAL "RF frontend found")
else(BLADERF_FOUND OR UHD_FOUND OR SOAPYSDR_FOUND) else(BLADERF_FOUND OR UHD_FOUND OR SOAPYSDR_FOUND OR ZEROMQ_FOUND)
set(RF_FOUND FALSE CACHE INTERNAL "RF frontend found") set(RF_FOUND FALSE CACHE INTERNAL "RF frontend found")
add_definitions(-DDISABLE_RF) add_definitions(-DDISABLE_RF)
endif(BLADERF_FOUND OR UHD_FOUND OR SOAPYSDR_FOUND) endif(BLADERF_FOUND OR UHD_FOUND OR SOAPYSDR_FOUND OR ZEROMQ_FOUND)
# Boost # Boost
if(ENABLE_SRSUE OR ENABLE_SRSENB OR ENABLE_SRSEPC) if(ENABLE_SRSUE OR ENABLE_SRSENB OR ENABLE_SRSEPC)

@ -0,0 +1,30 @@
message(STATUS "FINDING ZEROMQ.")
if(NOT ZEROMQ_FOUND)
pkg_check_modules (ZEROMQ_PKG ZeroMQ)
find_path(ZEROMQ_INCLUDE_DIRS
NAMES zmq.h
PATHS ${ZEROMQ_PKG_INCLUDE_DIRS}
/usr/include/zmq
/usr/local/include/zmq
)
find_library(ZEROMQ_LIBRARIES
NAMES zmq
PATHS ${ZEROMQ_PKG_LIBRARY_DIRS}
/usr/lib
/usr/local/lib
/usr/lib/arm-linux-gnueabihf
)
if(ZEROMQ_INCLUDE_DIRS AND ZEROMQ_LIBRARIES)
set(ZEROMQ_FOUND TRUE CACHE INTERNAL "libZEROMQ found")
message(STATUS "Found libZEROMQ: ${ZEROMQ_INCLUDE_DIRS}, ${ZEROMQ_LIBRARIES}")
else(ZEROMQ_INCLUDE_DIRS AND ZEROMQ_LIBRARIES)
set(ZEROMQ_FOUND FALSE CACHE INTERNAL "libZEROMQ found")
message(STATUS "libZEROMQ not found.")
endif(ZEROMQ_INCLUDE_DIRS AND ZEROMQ_LIBRARIES)
mark_as_advanced(ZEROMQ_LIBRARIES ZEROMQ_INCLUDE_DIRS)
endif(NOT ZEROMQ_FOUND)

@ -42,6 +42,11 @@ if(RF_FOUND)
list(APPEND SOURCES_RF rf_soapy_imp.c) list(APPEND SOURCES_RF rf_soapy_imp.c)
endif (SOAPYSDR_FOUND AND ENABLE_SOAPYSDR) endif (SOAPYSDR_FOUND AND ENABLE_SOAPYSDR)
if (ZEROMQ_FOUND)
add_definitions(-DENABLE_ZEROMQ)
list(APPEND SOURCES_RF rf_zmq_imp.c)
endif (ZEROMQ_FOUND)
add_library(srslte_rf SHARED ${SOURCES_RF}) add_library(srslte_rf SHARED ${SOURCES_RF})
target_link_libraries(srslte_rf srslte_rf_utils srslte_phy) target_link_libraries(srslte_rf srslte_rf_utils srslte_phy)
@ -57,5 +62,12 @@ if(RF_FOUND)
target_link_libraries(srslte_rf ${SOAPYSDR_LIBRARIES}) target_link_libraries(srslte_rf ${SOAPYSDR_LIBRARIES})
endif (SOAPYSDR_FOUND AND ENABLE_SOAPYSDR) endif (SOAPYSDR_FOUND AND ENABLE_SOAPYSDR)
if (ZEROMQ_FOUND)
target_link_libraries(srslte_rf ${ZEROMQ_LIBRARIES})
add_executable(rf_zmq_test rf_zmq_test.c)
target_link_libraries(rf_zmq_test srslte_rf)
add_test(rf_zmq_test rf_zmq_test )
endif (ZEROMQ_FOUND)
INSTALL(TARGETS srslte_rf DESTINATION ${LIBRARY_DIR}) INSTALL(TARGETS srslte_rf DESTINATION ${LIBRARY_DIR})
endif(RF_FOUND) endif(RF_FOUND)

@ -178,6 +178,42 @@ static rf_dev_t dev_soapy = {
#endif #endif
/* Define implementation for UHD */
#ifdef ENABLE_ZEROMQ
#include "rf_zmq_imp.h"
static rf_dev_t dev_zmq = {"zmq",
rf_zmq_devname,
rf_zmq_rx_wait_lo_locked,
rf_zmq_start_rx_stream,
rf_zmq_stop_rx_stream,
rf_zmq_flush_buffer,
rf_zmq_has_rssi,
rf_zmq_get_rssi,
rf_zmq_suppress_stdout,
rf_zmq_register_error_handler,
rf_zmq_open,
.srslte_rf_open_multi = rf_zmq_open_multi,
rf_zmq_close,
rf_zmq_set_master_clock_rate,
rf_zmq_is_master_clock_dynamic,
rf_zmq_set_rx_srate,
rf_zmq_set_rx_gain,
rf_zmq_set_tx_gain,
rf_zmq_get_rx_gain,
rf_zmq_get_tx_gain,
rf_zmq_get_info,
rf_zmq_set_rx_freq,
rf_zmq_set_tx_srate,
rf_zmq_set_tx_freq,
rf_zmq_get_time,
rf_zmq_recv_with_time,
rf_zmq_recv_with_time_multi,
rf_zmq_send_timed,
.srslte_rf_send_timed_multi = rf_zmq_send_timed_multi};
#endif
//#define ENABLE_DUMMY_DEV //#define ENABLE_DUMMY_DEV
#ifdef ENABLE_DUMMY_DEV #ifdef ENABLE_DUMMY_DEV
@ -220,19 +256,21 @@ static rf_dev_t dev_dummy = {
}; };
#endif #endif
static rf_dev_t *available_devices[] = { static rf_dev_t* available_devices[] = {
#ifdef ENABLE_UHD #ifdef ENABLE_UHD
&dev_uhd, &dev_uhd,
#endif #endif
#ifdef ENABLE_SOAPYSDR #ifdef ENABLE_SOAPYSDR
&dev_soapy, &dev_soapy,
#endif #endif
#ifdef ENABLE_BLADERF #ifdef ENABLE_BLADERF
&dev_blade, &dev_blade,
#endif
#ifdef ENABLE_ZEROMQ
&dev_zmq,
#endif #endif
#ifdef ENABLE_DUMMY_DEV #ifdef ENABLE_DUMMY_DEV
&dev_dummy, &dev_dummy,
#endif #endif
NULL NULL};
};

@ -26,6 +26,7 @@
// A bunch of helper functions to process device arguments // A bunch of helper functions to process device arguments
#include <string.h>
#define REMOVE_SUBSTRING_WITHCOMAS(S, TOREMOVE) \ #define REMOVE_SUBSTRING_WITHCOMAS(S, TOREMOVE) \
remove_substring(S, TOREMOVE ",");\ remove_substring(S, TOREMOVE ",");\
@ -34,15 +35,17 @@
remove_substring(S, ", " TOREMOVE);\ remove_substring(S, ", " TOREMOVE);\
remove_substring(S, TOREMOVE) remove_substring(S, TOREMOVE)
static void remove_substring(char *s,const char *toremove) { static inline void remove_substring(char* s, const char* toremove)
{
while((s=strstr(s,toremove))) { while((s=strstr(s,toremove))) {
memmove(s,s+strlen(toremove),1+strlen(s+strlen(toremove))); memmove(s,s+strlen(toremove),1+strlen(s+strlen(toremove)));
} }
} }
static void copy_subdev_string(char *dst, char *src) { static inline void copy_subdev_string(char* dst, char* src)
{
int n = 0; int n = 0;
size_t len = strlen(src); int len = (int)strlen(src);
/* Copy until end of string or comma */ /* Copy until end of string or comma */
while (n < len && src[n] != '\0' && src[n] != ',') { while (n < len && src[n] != '\0' && src[n] != ',') {
dst[n] = src[n]; dst[n] = src[n];

@ -0,0 +1,940 @@
/**
*
* \section COPYRIGHT
*
* Copyright 2013-2019 Software Radio Systems Limited
*
* \section LICENSE
*
* This file is part of the srsLTE library.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#include "rf_zmq_imp.h"
#include "rf_helper.h"
#include <math.h>
#include <signal.h>
#include <srslte/phy/common/phy_common.h>
#include <srslte/phy/common/timestamp.h>
#include <srslte/phy/rf/rf.h>
#include <srslte/phy/utils/ringbuffer.h>
#include <srslte/phy/utils/vector.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <zmq.h>
typedef struct {
// Common attributes
char* devname;
srslte_rf_info_t info;
uint32_t nof_channels;
bool running;
// RF State
double srate; // radio rate configured by upper layers
double base_srate;
uint32_t decim_factor; // decimation factor between base_srate used on transport on radio's rate
double rx_gain;
double tx_freq;
double rx_freq;
bool tx_used;
// Server
void* context;
void* transmitter;
void* receiver;
char rx_port[PARAM_LEN];
char tx_port[PARAM_LEN];
char id[PARAM_LEN_SHORT];
// Various sample buffers
cf_t* buffer_decimation;
cf_t* buffer_rx;
cf_t* buffer_tx;
// Rx and Tx timestamps
uint64_t next_rx_ts;
uint64_t next_tx_ts;
// Ringbuffer
srslte_ringbuffer_t rx_ringbuffer;
pthread_t thread;
pthread_mutex_t mutex;
pthread_mutex_t mutex_tx;
} rf_zmq_handler_t;
/* Definitions */
#define VERBOSE 0
#define NSAMPLES2NBYTES(X) (((uint32_t)(X)) * sizeof(cf_t))
#define NBYTES2NSAMPLES(X) ((X) / sizeof(cf_t))
#define BUFFER_SIZE (NSAMPLES2NBYTES(3072000)) // 10 subframes at 20 MHz
#define ZMQ_TIMEOUT_MS 1000
#define ZMQ_MAXTRIALS 3
#define ZMQ_TRX_MARGIN_MS 1
void update_rates(rf_zmq_handler_t* handler, double srate);
/*
* Static Atributes
*/
const char zmq_devname[4] = "zmq";
/*
* Static methods
*/
static inline void rf_zmq_info(rf_zmq_handler_t* handler, const char* format, ...)
{
#if VERBOSE
struct timeval t;
gettimeofday(&t, NULL);
va_list args;
va_start(args, format);
printf("[%s@%02ld.%06ld] ", handler ? handler->id : "zmq", t.tv_sec % 10, t.tv_usec);
vprintf(format, args);
va_end(args);
#else /* VERBOSE */
// Do nothing
#endif /* VERBOSE */
}
static void rf_zmq_error(rf_zmq_handler_t* handler, const char* format, ...)
{
struct timeval t;
gettimeofday(&t, NULL);
va_list args;
va_start(args, format);
vfprintf(stderr, format, args);
va_end(args);
}
static inline int update_ts(void* h, uint64_t* ts, int nsamples, const char* dir)
{
int ret = SRSLTE_ERROR;
if (h && nsamples > 0) {
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)h;
pthread_mutex_lock(&handler->mutex);
(*ts) += nsamples;
pthread_mutex_unlock(&handler->mutex);
srslte_timestamp_t _ts = {};
srslte_timestamp_init_uint64(&_ts, *ts, handler->base_srate);
rf_zmq_info(handler, " -> next %s time after %d samples: %d + %.3f\n", dir, nsamples, _ts.full_secs,
_ts.frac_secs);
ret = SRSLTE_SUCCESS;
}
return ret;
}
static inline int rf_zmq_handle_error(rf_zmq_handler_t* handler, const char* text)
{
int ret = SRSLTE_SUCCESS;
int err = zmq_errno();
switch (err) {
// handled errors
case EFSM:
case EAGAIN:
rf_zmq_info(handler, "Warning %s: %s\n", text, zmq_strerror(err));
break;
// critical non-handled errors
default:
ret = SRSLTE_ERROR;
rf_zmq_error(handler, "Error %s: %s\n", text, zmq_strerror(err));
}
return ret;
}
static int rf_zmq_tx(rf_zmq_handler_t* handler, uint8_t* buffer, uint32_t nbytes)
{
int n, ntrials;
pthread_mutex_lock(&handler->mutex_tx);
// Receive Transmit request
uint8_t dummy;
for (ntrials = 0, n = -1; ntrials < ZMQ_MAXTRIALS && n < 0 && handler->running; ntrials++) {
n = zmq_recv(handler->transmitter, &dummy, sizeof(dummy), 0);
if (n < 0) {
if (rf_zmq_handle_error(handler, "tx request receive")) {
n = SRSLTE_ERROR;
goto clean_exit;
}
} else {
rf_zmq_info(handler, " - tx request received\n");
rf_zmq_info(handler, " - sending %d samples (%d B)\n", NBYTES2NSAMPLES(nbytes), nbytes);
}
}
// Send zeros
for (ntrials = 0, n = -1; ntrials < ZMQ_MAXTRIALS && n < 0 && handler->running; ntrials++) {
n = zmq_send(handler->transmitter, buffer, nbytes, 0);
if (n < 0) {
if (rf_zmq_handle_error(handler, "tx baseband send")) {
n = SRSLTE_ERROR;
goto clean_exit;
}
} else if (n != nbytes) {
rf_zmq_error(handler, "[zmq] Error: transmitter expected %d bytes and sent %d. %s.\n", nbytes, n,
strerror(zmq_errno()));
n = SRSLTE_ERROR;
goto clean_exit;
}
}
// update both tx timestamp and ringbuffer
update_ts(handler, &handler->next_tx_ts, NBYTES2NSAMPLES(nbytes), "tx");
clean_exit:
pthread_mutex_unlock(&handler->mutex_tx);
return (n > 0) ? nbytes : SRSLTE_ERROR;
}
static int rf_zmq_tx_zeros(rf_zmq_handler_t* handler, int32_t nsamples)
{
rf_zmq_info(handler, "Tx %d zero samples\n", nsamples);
if (NSAMPLES2NBYTES(nsamples) > ZMQ_MAX_RX_BYTES) {
// can't transmit zeros, buffer too small
fprintf(stderr, "[zmq] Error: zero buffer too small (%ld) to transmit %ld samples\n", ZMQ_MAX_RX_BYTES,
NSAMPLES2NBYTES(nsamples));
return SRSLTE_ERROR;
}
bzero(handler->buffer_tx, NSAMPLES2NBYTES(nsamples));
return rf_zmq_tx(handler, (uint8_t*)handler->buffer_tx, NSAMPLES2NBYTES(nsamples));
}
static void* rf_zmq_async_rx_thread(void* h)
{
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)h;
while (handler->receiver && handler->running) {
int n = SRSLTE_ERROR;
uint8_t dummy = 0xFF;
int ntrials = 0;
rf_zmq_info(handler, "-- ASYNC RX wait...\n");
// Send request
for (ntrials = 0; n < 0 && ntrials < ZMQ_MAXTRIALS && handler->running; ntrials++) {
rf_zmq_info(handler, " - tx'ing rx request\n");
n = zmq_send(handler->receiver, &dummy, sizeof(dummy), 0);
if (n < 0) {
if (rf_zmq_handle_error(handler, "synchronous rx request send")) {
return NULL;
}
}
}
// Receive baseband
for (n = (n < 0) ? 0 : -1; n < 0 && handler->running;) {
n = zmq_recv(handler->receiver, handler->buffer_rx, BUFFER_SIZE, 0);
if (n == -1) {
if (rf_zmq_handle_error(handler, "asynchronous rx baseband receive")) {
return NULL;
}
} else if (n > BUFFER_SIZE) {
fprintf(stderr, "[zmq] Error: receiver expected <= %ld bytes and received %d at channel %d.\n", BUFFER_SIZE, n,
0);
return NULL;
}
}
// Write received data in buffer
if (n > 0) {
if (srslte_ringbuffer_write(&handler->rx_ringbuffer, handler->buffer_rx, n) != n) {
rf_zmq_error(handler, "[zmq] error writing asynchronous ring buffer...\n");
}
rf_zmq_info(handler, " - received %d baseband samples (%d B). %d samples available.\n", NBYTES2NSAMPLES(n), n,
srslte_ringbuffer_status(&handler->rx_ringbuffer));
}
}
return NULL;
}
/*
* Public methods
*/
void rf_zmq_suppress_stdout(void* h)
{
// do nothing
}
void rf_zmq_register_error_handler(void* h, srslte_rf_error_handler_t new_handler)
{
// do nothing
}
char* rf_zmq_devname(void* h)
{
return (char*)zmq_devname;
}
bool rf_zmq_rx_wait_lo_locked(void* h)
{
// TODO: Return true if it is client and connected
return true;
}
int rf_zmq_start_rx_stream(void* h, bool now)
{
return SRSLTE_SUCCESS;
}
int rf_zmq_stop_rx_stream(void* h)
{
return 0;
}
void rf_zmq_flush_buffer(void* h)
{
printf("%s\n", __FUNCTION__);
}
bool rf_zmq_has_rssi(void* h)
{
return false;
}
float rf_zmq_get_rssi(void* h)
{
return 0.0;
}
int rf_zmq_open(char* args, void** h)
{
return rf_zmq_open_multi(args, h, 1);
}
int rf_zmq_open_multi(char* args, void** h, uint32_t nof_channels)
{
int ret = SRSLTE_ERROR;
if (h) {
*h = NULL;
if (nof_channels != 1) {
printf("rf_zmq only supports single port at the moment.\n");
return SRSLTE_ERROR;
}
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)malloc(sizeof(rf_zmq_handler_t));
if (!handler) {
perror("malloc");
return SRSLTE_ERROR;
}
bzero(handler, sizeof(rf_zmq_handler_t));
*h = handler;
handler->base_srate = 23.04e6; // Sample rate for 100 PRB cell
handler->rx_gain = 0.0;
handler->info.max_rx_gain = +INFINITY;
handler->info.min_rx_gain = -INFINITY;
handler->info.max_tx_gain = +INFINITY;
handler->info.min_tx_gain = -INFINITY;
strcpy(handler->id, "zmq\0");
pthread_mutex_init(&handler->mutex, NULL);
pthread_mutex_init(&handler->mutex_tx, NULL);
// parse args
if (args) {
// base_srate
{
const char config_arg[] = "base_srate=";
char config_str[PARAM_LEN] = {0};
char* config_ptr = strstr(args, config_arg);
if (config_ptr) {
copy_subdev_string(config_str, config_ptr + strlen(config_arg));
printf("Using base rate=%s\n", config_str);
handler->base_srate = strtod(config_str, NULL);
remove_substring(args, config_arg);
remove_substring(args, config_str);
}
}
// rxport
{
const char config_arg[] = "rx_port=";
char config_str[PARAM_LEN] = {0};
char* config_ptr = strstr(args, config_arg);
if (config_ptr) {
copy_subdev_string(config_str, config_ptr + strlen(config_arg));
printf("Using rx_port=%s\n", config_str);
strncpy(handler->rx_port, config_str, PARAM_LEN);
handler->rx_port[PARAM_LEN - 1] = 0;
remove_substring(args, config_arg);
remove_substring(args, config_str);
}
}
// txport
{
const char config_arg[] = "tx_port=";
char config_str[PARAM_LEN] = {0};
char* config_ptr = strstr(args, config_arg);
if (config_ptr) {
copy_subdev_string(config_str, config_ptr + strlen(config_arg));
printf("Using tx_port=%s\n", config_str);
strncpy(handler->tx_port, config_str, PARAM_LEN);
handler->tx_port[PARAM_LEN - 1] = 0;
remove_substring(args, config_arg);
remove_substring(args, config_str);
}
}
// id
{
const char config_arg[] = "id=";
char config_str[PARAM_LEN_SHORT] = {0};
char* config_ptr = strstr(args, config_arg);
if (config_ptr) {
copy_subdev_string(config_str, config_ptr + strlen(config_arg));
printf("Using ID=%s\n", config_str);
strncpy(handler->id, config_str, PARAM_LEN_SHORT);
handler->id[PARAM_LEN_SHORT - 1] = 0;
remove_substring(args, config_arg);
remove_substring(args, config_str);
}
}
}
update_rates(handler, 1.92e6);
// Create ZMQ context
handler->context = zmq_ctx_new();
if (!handler->context) {
fprintf(stderr, "[zmq] Error: creating new context\n");
goto clean_exit;
}
if (strlen(handler->tx_port) != 0) {
// Initialise transmitter
handler->transmitter = zmq_socket(handler->context, ZMQ_REP);
if (!handler->transmitter) {
fprintf(stderr, "[zmq] Error: creating transmitter socket\n");
goto clean_exit;
}
rf_zmq_info(handler, "Binding transmitter: %s\n", handler->tx_port);
ret = zmq_bind(handler->transmitter, handler->tx_port);
if (ret) {
fprintf(stderr, "Error: connecting transmitter socket: %s\n", zmq_strerror(zmq_errno()));
goto clean_exit;
}
#if ZMQ_TIMEOUT_MS
// set recv timeout for transmitter
int timeout = ZMQ_TIMEOUT_MS;
if (zmq_setsockopt(handler->transmitter, ZMQ_RCVTIMEO, &timeout, sizeof(timeout)) == -1) {
fprintf(stderr, "Error: setting receive timeout on tx socket\n");
goto clean_exit;
}
if (zmq_setsockopt(handler->transmitter, ZMQ_SNDTIMEO, &timeout, sizeof(timeout)) == -1) {
fprintf(stderr, "Error: setting receive timeout on tx socket\n");
goto clean_exit;
}
// set linger timeout for transmitter
timeout = 0;
if (zmq_setsockopt(handler->transmitter, ZMQ_LINGER, &timeout, sizeof(timeout)) == -1) {
fprintf(stderr, "Error: setting linger timeout on tx socket\n");
}
#endif
} else {
fprintf(stdout, "[zmq] %s Tx port not specified. Disabling transmitter.\n", handler->id);
}
// initialize receiver
if (strlen(handler->rx_port) != 0) {
handler->receiver = zmq_socket(handler->context, ZMQ_REQ);
if (!handler->receiver) {
fprintf(stderr, "[zmq] Error: creating receiver socket\n");
goto clean_exit;
}
rf_zmq_info(handler, "Connecting receiver: %s\n", handler->rx_port);
ret = zmq_connect(handler->receiver, handler->rx_port);
if (ret) {
fprintf(stderr, "Error: binding receiver socket: %s\n", zmq_strerror(zmq_errno()));
goto clean_exit;
}
#if ZMQ_TIMEOUT_MS
// set recv timeout for receiver
int timeout = ZMQ_TIMEOUT_MS;
if (zmq_setsockopt(handler->receiver, ZMQ_RCVTIMEO, &timeout, sizeof(timeout)) == -1) {
fprintf(stderr, "Error: setting receive timeout on tx socket\n");
goto clean_exit;
}
if (zmq_setsockopt(handler->receiver, ZMQ_SNDTIMEO, &timeout, sizeof(timeout)) == -1) {
fprintf(stderr, "Error: setting receive timeout on tx socket\n");
goto clean_exit;
}
timeout = 0;
// set linger timeout for receiver
if (zmq_setsockopt(handler->receiver, ZMQ_LINGER, &timeout, sizeof(timeout)) == -1) {
fprintf(stderr, "Error: setting linger timeout on rx socket\n");
}
#endif
// init rx ringbuffer
if (srslte_ringbuffer_init(&handler->rx_ringbuffer, BUFFER_SIZE)) {
fprintf(stderr, "Error, initiating rx ringbuffer\n");
goto clean_exit;
}
} else {
fprintf(stdout, "[zmq] %s Rx port not specified. Disabling receiver.\n", handler->id);
}
if (handler->transmitter == NULL && handler->receiver == NULL) {
fprintf(stderr, "[zmq] Error: Neither Tx port nor Rx port specified.\n");
goto clean_exit;
}
// Create decimation and overflow buffer
handler->buffer_decimation = srslte_vec_malloc(ZMQ_MAX_RX_BYTES);
if (!handler->buffer_decimation) {
fprintf(stderr, "Error: allocating decimation buffer\n");
goto clean_exit;
}
handler->buffer_tx = srslte_vec_malloc(ZMQ_MAX_RX_BYTES);
if (!handler->buffer_tx) {
fprintf(stderr, "Error: allocating tx buffer\n");
goto clean_exit;
}
handler->buffer_rx = srslte_vec_malloc(ZMQ_MAX_RX_BYTES);
if (!handler->buffer_rx) {
fprintf(stderr, "Error: allocating rx buffer\n");
goto clean_exit;
}
handler->running = true;
if (handler->receiver) {
pthread_create(&handler->thread, NULL, rf_zmq_async_rx_thread, handler);
}
ret = SRSLTE_SUCCESS;
clean_exit:
if (ret) {
rf_zmq_close(handler);
}
}
return ret;
}
int rf_zmq_close(void* h)
{
rf_zmq_stop_rx_stream(h);
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)h;
rf_zmq_info(handler, "Closing %s ...\n", handler->id);
handler->running = false;
if (handler->thread) {
pthread_join(handler->thread, NULL);
pthread_detach(handler->thread);
}
if (handler->transmitter) {
zmq_close(handler->transmitter);
handler->transmitter = NULL;
}
if (handler->receiver) {
zmq_close(handler->receiver);
handler->receiver = NULL;
srslte_ringbuffer_free(&handler->rx_ringbuffer);
}
if (handler->context) {
zmq_ctx_destroy(handler->context);
}
if (handler->buffer_decimation) {
free(handler->buffer_decimation);
}
if (handler->buffer_tx) {
free(handler->buffer_tx);
}
if (handler->buffer_rx) {
free(handler->buffer_rx);
}
pthread_mutex_destroy(&handler->mutex);
pthread_mutex_destroy(&handler->mutex_tx);
// Free all
free(handler);
return SRSLTE_SUCCESS;
}
void rf_zmq_set_master_clock_rate(void* h, double rate)
{
// Do nothing
}
bool rf_zmq_is_master_clock_dynamic(void* h)
{
return false;
}
void update_rates(rf_zmq_handler_t* handler, double srate)
{
if (handler) {
// Decimation must be full integer
if (((uint64_t)handler->base_srate % (uint64_t)srate) == 0) {
handler->srate = srate;
handler->decim_factor = handler->base_srate / handler->srate;
} else {
fprintf(stderr, "Error: couldn't update sample rate. %.2f is not divisible by %.2f\n", srate / 1e6,
handler->base_srate / 1e6);
}
printf("Current sample rate is %.2f MHz with a base rate of %.2f MHz (x%d decimation)\n", handler->srate / 1e6,
handler->base_srate / 1e6, handler->decim_factor);
}
}
double rf_zmq_set_rx_srate(void* h, double srate)
{
double ret = 0.0;
if (h) {
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)h;
update_rates(handler, srate);
ret = handler->srate;
}
return ret;
}
double rf_zmq_set_tx_srate(void* h, double srate)
{
double ret = 0.0;
if (h) {
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)h;
update_rates(handler, srate);
ret = srate;
}
return ret;
}
double rf_zmq_set_rx_gain(void* h, double gain)
{
double ret = 0.0;
if (h) {
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)h;
handler->rx_gain = gain;
ret = gain;
}
return ret;
}
double rf_zmq_set_tx_gain(void* h, double gain)
{
return 0.0;
}
double rf_zmq_get_rx_gain(void* h)
{
double ret = 0.0;
if (h) {
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)h;
ret = handler->rx_gain;
}
return ret;
}
double rf_zmq_get_tx_gain(void* h)
{
return 0.0;
}
srslte_rf_info_t* rf_zmq_get_info(void* h)
{
srslte_rf_info_t* info = NULL;
if (h) {
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)h;
info = &handler->info;
}
return info;
}
double rf_zmq_set_rx_freq(void* h, double freq)
{
double ret = NAN;
if (h) {
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)h;
handler->rx_freq = freq;
ret = freq;
}
return ret;
}
double rf_zmq_set_tx_freq(void* h, double freq)
{
double ret = NAN;
if (h) {
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)h;
handler->tx_freq = freq;
ret = freq;
}
return ret;
}
void rf_zmq_get_time(void* h, time_t* secs, double* frac_secs)
{
if (h) {
if (secs) {
*secs = 0;
}
if (frac_secs) {
*frac_secs = 0;
}
}
}
int rf_zmq_recv_with_time(void* h, void* data, uint32_t nsamples, bool blocking, time_t* secs, double* frac_secs)
{
return rf_zmq_recv_with_time_multi(h, &data, nsamples, blocking, secs, frac_secs);
}
int rf_zmq_recv_with_time_multi(
void* h, void* data[4], uint32_t nsamples, bool blocking, time_t* secs, double* frac_secs)
{
int ret = SRSLTE_ERROR;
if (h) {
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)h;
uint32_t nbytes = NSAMPLES2NBYTES(nsamples * handler->decim_factor);
uint32_t nsamples_baserate = nsamples * handler->decim_factor;
uint32_t nbytes_baserate = NSAMPLES2NBYTES(nsamples_baserate);
rf_zmq_info(handler, "Rx %d samples (%d B)\n", nsamples, nbytes);
// set timestamp for this reception
if (secs != NULL && frac_secs != NULL) {
srslte_timestamp_t ts = {};
srslte_timestamp_init_uint64(&ts, handler->next_rx_ts, handler->base_srate);
*secs = ts.full_secs;
*frac_secs = ts.frac_secs;
}
// return if receiver is turned off
if (handler->receiver == NULL) {
update_ts(handler, &handler->next_rx_ts, nsamples_baserate, "rx");
return nsamples;
}
// Check available buffer size
if (nbytes > ZMQ_MAX_RX_BYTES) {
fprintf(stderr, "[zmq] Error: Trying to receive %d B but buffer is only %ld B at channel %d.\n", nbytes,
ZMQ_MAX_RX_BYTES, 0);
goto clean_exit;
}
// receive samples
srslte_timestamp_t ts_tx = {}, ts_rx = {};
srslte_timestamp_init_uint64(&ts_tx, handler->next_tx_ts, handler->base_srate);
srslte_timestamp_init_uint64(&ts_rx, handler->next_rx_ts, handler->base_srate);
rf_zmq_info(handler, " - next rx time: %d + %.3f\n", ts_rx.full_secs, ts_rx.frac_secs);
rf_zmq_info(handler, " - next tx time: %d + %.3f\n", ts_tx.full_secs, ts_tx.frac_secs);
// check for tx gap if we're also transmitting on this radio
if (handler->transmitter) {
uint32_t margin_nsamples =
(uint32_t)(handler->tx_used ? (0) : (nsamples_baserate + ZMQ_TRX_MARGIN_MS * handler->base_srate / 1000.0));
int num_tx_gap_samples_base_rate = (int)(handler->next_rx_ts - handler->next_tx_ts + margin_nsamples);
if (num_tx_gap_samples_base_rate > 0) {
rf_zmq_info(handler, " - tx_gap of %d samples\n", num_tx_gap_samples_base_rate);
// Transmit zero samples
rf_zmq_tx_zeros(handler, num_tx_gap_samples_base_rate);
} else {
rf_zmq_info(handler, " - no tx gap detected\n");
}
}
// copy from rx buffer as many samples as requested into provided buffer
cf_t* ptr = (handler->decim_factor != 1) ? handler->buffer_decimation : data[0];
if (srslte_ringbuffer_read(&handler->rx_ringbuffer, ptr, nbytes_baserate) != nbytes) {
fprintf(stderr, "Error: reading from rx ringbuffer.\n");
goto clean_exit;
}
rf_zmq_info(handler, " - read %d samples. %d samples available\n", NBYTES2NSAMPLES(nbytes),
NBYTES2NSAMPLES(srslte_ringbuffer_status(&handler->rx_ringbuffer)));
// decimate if needed
if (handler->decim_factor != 1) {
cf_t* dst = data[0];
int n;
for (int i = n = 0; i < nsamples; i++) {
// Averaging decimation
cf_t avg = 0.0f;
for (int j = 0; j < handler->decim_factor; j++, n++) {
avg += ptr[n];
}
dst[i] = avg;
}
rf_zmq_info(handler, " - re-adjust bytes due to %dx decimation %d --> %d samples)\n", handler->decim_factor,
nsamples_baserate, nsamples);
}
// update rx time
update_ts(handler, &handler->next_rx_ts, nsamples_baserate, "rx");
}
ret = nsamples;
clean_exit:
return ret;
}
int rf_zmq_send_timed(void* h,
void* data,
int nsamples,
time_t secs,
double frac_secs,
bool has_time_spec,
bool blocking,
bool is_start_of_burst,
bool is_end_of_burst)
{
void* _data[4] = {data, NULL, NULL, NULL};
return rf_zmq_send_timed_multi(h, _data, nsamples, secs, frac_secs, has_time_spec, blocking, is_start_of_burst,
is_end_of_burst);
}
// TODO: Implement Tx upsampling
int rf_zmq_send_timed_multi(void* h,
void* data[4],
int nsamples,
time_t secs,
double frac_secs,
bool has_time_spec,
bool blocking,
bool is_start_of_burst,
bool is_end_of_burst)
{
int ret = SRSLTE_ERROR;
if (h && data && nsamples > 0) {
rf_zmq_handler_t* handler = (rf_zmq_handler_t*)h;
uint32_t nbytes = NSAMPLES2NBYTES(nsamples);
uint32_t nsamples_baseband = nsamples * handler->decim_factor;
uint32_t nbytes_baseband = NSAMPLES2NBYTES(nsamples_baseband);
if (nbytes_baseband > ZMQ_MAX_RX_BYTES) {
fprintf(stderr, "Error: trying to transmit too many samples (%d > %ld).\n", nbytes, ZMQ_MAX_RX_BYTES);
goto clean_exit;
}
rf_zmq_info(handler, "Tx %d samples (%d B)\n", nsamples, nbytes);
// return if transmitter is switched off
if (handler->tx_port == 0) {
return SRSLTE_SUCCESS;
}
// check if this is a tx in the future
if (has_time_spec) {
rf_zmq_info(handler, " - tx time: %d + %.3f\n", secs, frac_secs);
srslte_timestamp_t ts = {};
srslte_timestamp_init(&ts, secs, frac_secs);
uint64_t tx_ts = srslte_timestamp_uint64(&ts, handler->base_srate);
int32_t num_tx_gap_samples = (int32_t)((int64_t)tx_ts - (int64_t)handler->next_tx_ts);
if (num_tx_gap_samples < 0) {
fprintf(stderr, "[zmq] Error: tx time is %.3f ms in the past (%ld < %ld)\n",
-1000.0 * num_tx_gap_samples / handler->base_srate, tx_ts, handler->next_tx_ts);
goto clean_exit;
} else if (num_tx_gap_samples > 0) {
rf_zmq_info(handler, " - tx gap of %d baseband samples\n", num_tx_gap_samples);
// send zero samples
int n = rf_zmq_tx_zeros(handler, num_tx_gap_samples);
if (n == -1) {
goto clean_exit;
}
} else {
rf_zmq_info(handler, " - no tx gap detected\n");
}
}
cf_t* buf = (handler->decim_factor != 1) ? handler->buffer_tx : data[0];
if (handler->decim_factor != 1) {
rf_zmq_info(handler, " - re-adjust bytes due to %dx interpolation %d --> %d samples)\n", handler->decim_factor,
nsamples, nsamples_baseband);
int n = 0;
cf_t* src = data[0];
for (int i = 0; i < nsamples; i++) {
// perform zero order hold
for (int j = 0; j < handler->decim_factor; j++, n++) {
buf[n] = src[i];
}
}
if (nsamples_baseband != n) {
fprintf(stderr, "Number of tx samples (%d) does not match with number of interpolated samples (%d)\n",
nsamples_baseband, n);
goto clean_exit;
}
}
// send baseband samples
int n = rf_zmq_tx(handler, (uint8_t*)buf, nbytes_baseband);
if (n == SRSLTE_ERROR) {
goto clean_exit;
}
handler->tx_used = true;
}
ret = SRSLTE_SUCCESS;
clean_exit:
return ret;
}

@ -0,0 +1,121 @@
/**
*
* \section COPYRIGHT
*
* Copyright 2013-2019 Software Radio Systems Limited
*
* \section LICENSE
*
* This file is part of the srsLTE library.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#include <stdbool.h>
#include <stdint.h>
#include "srslte/config.h"
#include "srslte/phy/rf/rf.h"
#define DEVNAME_ZMQ "ZeroMQ"
#define PARAM_LEN (128)
#define PARAM_LEN_SHORT (PARAM_LEN / 2)
#define ZMQ_MAX_RX_BYTES \
(5 * SRSLTE_SF_LEN_MAX * sizeof(cf_t)) // Five subframes at max LTE rate using default FFT-length
SRSLTE_API int rf_zmq_open(char* args, void** handler);
SRSLTE_API int rf_zmq_open_multi(char* args, void** handler, uint32_t nof_channels);
SRSLTE_API char* rf_zmq_devname(void* h);
SRSLTE_API int rf_zmq_close(void* h);
SRSLTE_API int rf_zmq_start_rx_stream(void* h, bool now);
SRSLTE_API int rf_zmq_start_rx_stream_nsamples(void* h, uint32_t nsamples);
SRSLTE_API int rf_zmq_stop_rx_stream(void* h);
SRSLTE_API void rf_zmq_flush_buffer(void* h);
SRSLTE_API bool rf_zmq_has_rssi(void* h);
SRSLTE_API float rf_zmq_get_rssi(void* h);
SRSLTE_API bool rf_zmq_rx_wait_lo_locked(void* h);
SRSLTE_API void rf_zmq_set_master_clock_rate(void* h, double rate);
SRSLTE_API bool rf_zmq_is_master_clock_dynamic(void* h);
SRSLTE_API double rf_zmq_set_rx_srate(void* h, double freq);
SRSLTE_API double rf_zmq_set_rx_gain(void* h, double gain);
SRSLTE_API double rf_zmq_get_rx_gain(void* h);
SRSLTE_API double rf_zmq_get_tx_gain(void* h);
SRSLTE_API srslte_rf_info_t* rf_zmq_get_info(void* h);
SRSLTE_API void rf_zmq_suppress_stdout(void* h);
SRSLTE_API void rf_zmq_register_error_handler(void* h, srslte_rf_error_handler_t error_handler);
SRSLTE_API double rf_zmq_set_rx_freq(void* h, double freq);
SRSLTE_API int rf_zmq_recv_with_time(void* h,
void* data,
uint32_t nsamples,
bool blocking,
time_t* secs,
double* frac_secs);
SRSLTE_API int rf_zmq_recv_with_time_multi(void* h,
void** data,
uint32_t nsamples,
bool blocking,
time_t* secs,
double* frac_secs);
SRSLTE_API double rf_zmq_set_tx_srate(void* h, double freq);
SRSLTE_API double rf_zmq_set_tx_gain(void* h, double gain);
SRSLTE_API double rf_zmq_set_tx_freq(void* h, double freq);
SRSLTE_API void rf_zmq_get_time(void* h, time_t* secs, double* frac_secs);
SRSLTE_API int rf_zmq_send_timed(void* h,
void* data,
int nsamples,
time_t secs,
double frac_secs,
bool has_time_spec,
bool blocking,
bool is_start_of_burst,
bool is_end_of_burst);
SRSLTE_API int rf_zmq_send_timed_multi(void* h,
void* data[4],
int nsamples,
time_t secs,
double frac_secs,
bool has_time_spec,
bool blocking,
bool is_start_of_burst,
bool is_end_of_burst);

@ -0,0 +1,214 @@
/**
*
* \section COPYRIGHT
*
* Copyright 2013-2019 Software Radio Systems Limited
*
* \section LICENSE
*
* This file is part of the srsLTE library.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#include "rf_zmq_imp.h"
#include "srslte/srslte.h"
#include <pthread.h>
#include <srslte/phy/common/phy_common.h>
#include <stdlib.h>
#include <zmq.h>
#define NOF_RX_ANT 1
#define NUM_SF (10240)
#define SF_LEN (1920)
#define RF_BUFFER_SIZE (SF_LEN * NUM_SF)
#define TX_OFFSET_MS (4)
static cf_t ue_rx_buffer[RF_BUFFER_SIZE];
static cf_t enb_tx_buffer[RF_BUFFER_SIZE];
static cf_t enb_rx_buffer[RF_BUFFER_SIZE];
static srslte_rf_t ue_radio, enb_radio;
pthread_t rx_thread;
void* ue_rx_thread_function(void* args)
{
char rf_args[PARAM_LEN];
strncpy(rf_args, (char*)args, PARAM_LEN);
rf_args[PARAM_LEN - 1] = 0;
// sleep(1);
printf("opening rx device with args=%s\n", rf_args);
if (srslte_rf_open_devname(&ue_radio, "zmq", rf_args, NOF_RX_ANT)) {
fprintf(stderr, "Error opening rf\n");
exit(-1);
}
// receive 5 subframes at once (i.e. mimic initial rx that receives one slot)
uint32_t num_slots = NUM_SF / 5;
uint32_t num_samps_per_slot = SF_LEN * 5;
uint32_t num_rxed_samps = 0;
for (uint32_t i = 0; i < num_slots; ++i) {
void* data_ptr[SRSLTE_MAX_PORTS] = {NULL};
data_ptr[0] = &ue_rx_buffer[i * num_samps_per_slot];
num_rxed_samps += srslte_rf_recv_with_time_multi(&ue_radio, data_ptr, num_samps_per_slot, true, NULL, NULL);
}
printf("received %d samples.\n", num_rxed_samps);
printf("closing ue norf device\n");
srslte_rf_close(&ue_radio);
return NULL;
}
void enb_tx_function(const char* tx_args, bool timed_tx)
{
char rf_args[PARAM_LEN];
strncpy(rf_args, tx_args, PARAM_LEN);
rf_args[PARAM_LEN - 1] = 0;
printf("opening tx device with args=%s\n", rf_args);
if (srslte_rf_open_devname(&enb_radio, "zmq", rf_args, NOF_RX_ANT)) {
fprintf(stderr, "Error opening rf\n");
exit(-1);
}
// generate random tx data
for (int i = 0; i < RF_BUFFER_SIZE; i++) {
enb_tx_buffer[i] = ((float)rand() / (float)RAND_MAX) + _Complex_I * ((float)rand() / (float)RAND_MAX);
}
// send data subframe per subframe
uint32_t num_txed_samples = 0;
// initial transmission without ts
void* data_ptr[SRSLTE_MAX_PORTS] = {NULL};
data_ptr[0] = &enb_tx_buffer[num_txed_samples];
int ret = srslte_rf_send_multi(&enb_radio, (void**)data_ptr, SF_LEN, true, true, false);
num_txed_samples += SF_LEN;
// from here on, all transmissions are timed relative to the last rx time
srslte_timestamp_t rx_time, tx_time;
for (uint32_t i = 0; i < NUM_SF - ((timed_tx) ? TX_OFFSET_MS : 1); ++i) {
// first recv samples
data_ptr[0] = enb_rx_buffer;
srslte_rf_recv_with_time_multi(&enb_radio, data_ptr, SF_LEN, true, &rx_time.full_secs, &rx_time.frac_secs);
// prepare data buffer
data_ptr[0] = &enb_tx_buffer[num_txed_samples];
if (timed_tx) {
// timed tx relative to receive time (this will cause a cap in the rx'ed samples at the UE resulting in 3 zero
// subframes)
srslte_timestamp_copy(&tx_time, &rx_time);
srslte_timestamp_add(&tx_time, 0, TX_OFFSET_MS * 1e-3);
ret = srslte_rf_send_timed_multi(&enb_radio, (void**)data_ptr, SF_LEN, tx_time.full_secs, tx_time.frac_secs, true,
true, false);
} else {
// normal tx
ret = srslte_rf_send_multi(&enb_radio, (void**)data_ptr, SF_LEN, true, true, false);
}
if (ret != SRSLTE_SUCCESS) {
fprintf(stderr, "Error sending data\n");
exit(-1);
}
num_txed_samples += SF_LEN;
}
printf("transmitted %d samples in %d subframes\n", num_txed_samples, NUM_SF);
printf("closing tx device\n");
srslte_rf_close(&enb_radio);
}
int run_test(const char* rx_args, const char* tx_args, bool timed_tx)
{
int ret = SRSLTE_ERROR;
// make sure we can receive in slots
if (NUM_SF % 5 != 0) {
fprintf(stderr, "number of subframes must be multiple of 5\n");
goto exit;
}
// start Rx thread
if (pthread_create(&rx_thread, NULL, ue_rx_thread_function, (void*)rx_args)) {
perror("pthread_create");
exit(-1);
}
enb_tx_function(tx_args, timed_tx);
// wait for rx thread
pthread_join(rx_thread, NULL);
// subframe-wise compare tx'ed and rx'ed data (stop 3 subframes earlier for timed tx)
for (uint32_t i = 0; i < NUM_SF - (timed_tx ? 3 : 0); ++i) {
uint32_t sf_offet = 0;
if (timed_tx && i >= 1) {
// for timed transmission, the enb inserts 3 zero subframes after the first untimed tx
sf_offet = (TX_OFFSET_MS - 1) * SF_LEN;
}
#if 0
// print first 3 samples for each SF
printf("enb_tx_buffer sf%d:\n", i);
srslte_vec_fprint_c(stdout, &enb_tx_buffer[i * SF_LEN], 3);
printf("ue_rx_buffer sf%d:\n", i);
srslte_vec_fprint_c(stdout, &ue_rx_buffer[sf_offet + i * SF_LEN], 3);
#endif
if (memcmp(&ue_rx_buffer[sf_offet + i * SF_LEN], &enb_tx_buffer[i * SF_LEN], SF_LEN) != 0) {
fprintf(stderr, "data mismatch in subframe %d\n", i);
goto exit;
}
}
ret = SRSLTE_SUCCESS;
exit:
return ret;
}
int main()
{
// single tx, single rx with continuous transmissions (no timed tx) using IPC transport
if (run_test("rx_port=ipc://link1,id=ue,base_srate=1.92e6", "tx_port=ipc://link1,id=enb,base_srate=1.92e6", false) !=
SRSLTE_SUCCESS) {
fprintf(stderr, "Single tx, single rx test failed!\n");
return -1;
}
// two trx radios with continous tx (no timed tx) using TCP transport for both directions
if (run_test("tx_port=tcp://*:5554,rx_port=tcp://localhost:5555,id=ue,base_srate=1.92e6",
"rx_port=tcp://localhost:5554,tx_port=tcp://*:5555,id=enb,base_srate=1.92e6", false) != SRSLTE_SUCCESS) {
fprintf(stderr, "Two TRx radio test failed!\n");
return -1;
}
// two trx radios with continous tx (no timed tx) using TCP for UL (UE tx) and IPC for eNB DL (eNB tx)
if (run_test("tx_port=tcp://*:5554,rx_port=ipc://dl,id=ue,base_srate=1.92e6",
"rx_port=tcp://localhost:5554,tx_port=ipc://dl,id=enb,base_srate=1.92e6", true) != SRSLTE_SUCCESS) {
fprintf(stderr, "Two TRx radio test with timed tx failed!\n");
return -1;
}
return 0;
}
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