void *tx_task(void *arg)
{
sim_t *s = (sim_t *)arg;
size_t samples_populated;
while (1) {
int16_t *tx_buffer_current = s->tx.buffer;
unsigned int buffer_samples_remaining = SAMPLES_PER_BUFFER;
while (buffer_samples_remaining > 0) {
pthread_mutex_lock(&(s->gps.lock));
while (get_sample_length(s) == 0)
{
pthread_cond_wait(&(s->fifo_read_ready), &(s->gps.lock));
}
// assert(get_sample_length(s) > 0);
samples_populated = fifo_read(tx_buffer_current,
buffer_samples_remaining,
s);
pthread_mutex_unlock(&(s->gps.lock));
pthread_cond_signal(&(s->fifo_write_ready));
#if 0
if (is_fifo_write_ready(s)) {
/*
printf("\rTime = %4.1f", s->time);
s->time += 0.1;
fflush(stdout);
*/
}
else if (is_finished_generation(s))
{
goto out;
}
#endif
// Advance the buffer pointer.
buffer_samples_remaining -= (unsigned int)samples_populated;
tx_buffer_current += (2 * samples_populated);
}
// If there were no errors, transmit the data buffer.
bladerf_sync_tx(s->tx.dev, s->tx.buffer, SAMPLES_PER_BUFFER, NULL, TIMEOUT_MS);
if (is_fifo_write_ready(s)) {
/*
printf("\rTime = %4.1f", s->time);
s->time += 0.1;
fflush(stdout);
*/
}
else if (is_finished_generation(s))
{
goto out;
}
}
out:
return NULL;
}
void *tx_task(void *arg)
{
sim_t *s = (sim_t *)arg;
size_t samples_populated;
while (1) {
int16_t *tx_buffer_current = s->tx.buffer;
unsigned int buffer_samples_remaining = SAMPLES_PER_BUFFER;
while (buffer_samples_remaining > 0) {
samples_populated = fifo_read(tx_buffer_current,
buffer_samples_remaining,
s);
if (is_fifo_write_ready(s)) {
pthread_cond_signal(&(s->fifo_write_ready));
/*
printf("\rTime = %4.1f", s->time);
s->time += 0.1;
fflush(stdout);
*/
}
// Advance the buffer pointer.
buffer_samples_remaining -= (unsigned int)samples_populated;
tx_buffer_current += (2 * samples_populated);
}
// If there were no errors, transmit the data buffer.
bladerf_sync_tx(s->tx.dev, s->tx.buffer, SAMPLES_PER_BUFFER, NULL, TIMEOUT_MS);
}
}
int main(int argc, char *argv[])
{
sim_t s;
char *devstr = NULL;
int c;
int result;
double duration;
datetime_t t0;
if (argc<3)
{
usage();
exit(1);
}
s.opt.navfile[0] = 0;
s.opt.umfile[0] = 0;
s.opt.g0.week = -1;
s.opt.g0.sec = 0.0;
s.opt.iduration = USER_MOTION_SIZE;
s.opt.verb = TRUE;
s.opt.nmeaGGA = FALSE;
s.opt.staticLocationMode = TRUE; // default user motion
s.opt.llh[0] = 35.274016 / R2D;
s.opt.llh[1] = 137.013765 / R2D;
s.opt.llh[2] = 100.0;
while ((result=getopt(argc,argv,"e:u:g:l:t:d:"))!=-1)
{
switch (result)
{
case 'e':
strcpy(s.opt.navfile, optarg);
break;
case 'u':
strcpy(s.opt.umfile, optarg);
s.opt.nmeaGGA = FALSE;
s.opt.staticLocationMode = FALSE;
break;
case 'g':
strcpy(s.opt.umfile, optarg);
s.opt.nmeaGGA = TRUE;
s.opt.staticLocationMode = FALSE;
break;
case 'l':
// Static geodetic coordinates input mode
// Added by [email protected]
s.opt.nmeaGGA = FALSE;
s.opt.staticLocationMode = TRUE;
sscanf(optarg,"%lf,%lf,%lf",&s.opt.llh[0],&s.opt.llh[1],&s.opt.llh[2]);
s.opt.llh[0] /= R2D; // convert to RAD
s.opt.llh[1] /= R2D; // convert to RAD
break;
case 't':
sscanf(optarg, "%d/%d/%d,%d:%d:%lf", &t0.y, &t0.m, &t0.d, &t0.hh, &t0.mm, &t0.sec);
if (t0.y<=1980 || t0.m<1 || t0.m>12 || t0.d<1 || t0.d>31 ||
t0.hh<0 || t0.hh>23 || t0.mm<0 || t0.mm>59 || t0.sec<0.0 || t0.sec>=60.0)
{
printf("ERROR: Invalid date and time.\n");
exit(1);
}
t0.sec = floor(t0.sec);
date2gps(&t0, &s.opt.g0);
break;
case 'd':
duration = atof(optarg);
if (duration<0.0 || duration>((double)USER_MOTION_SIZE)/10.0)
{
printf("ERROR: Invalid duration.\n");
exit(1);
}
s.opt.iduration = (int)(duration*10.0+0.5);
break;
case ':':
case '?':
usage();
exit(1);
default:
break;
}
}
if (s.opt.navfile[0]==0)
{
printf("ERROR: GPS ephemeris file is not specified.\n");
exit(1);
}
if (s.opt.umfile[0]==0 && !s.opt.staticLocationMode)
{
printf("ERROR: User motion file / NMEA GGA stream is not specified.\n");
printf("You may use -l to specify the static location directly.\n");
exit(1);
}
// Initialize simulator
init_sim(&s);
// Allocate TX buffer to hold each block of samples to transmit.
s.tx.buffer = (int16_t *)malloc(SAMPLES_PER_BUFFER * sizeof(int16_t) * 2); // for 16-bit I and Q samples
if (s.tx.buffer == NULL) {
fprintf(stderr, "Failed to allocate TX buffer.\n");
goto out;
}
// Allocate FIFOs to hold 0.1 seconds of I/Q samples each.
s.fifo = (int16_t *)malloc(FIFO_LENGTH * sizeof(int16_t) * 2); // for 16-bit I and Q samples
if (s.fifo == NULL) {
fprintf(stderr, "Failed to allocate I/Q sample buffer.\n");
goto out;
}
// Initializing device.
printf("Opening and initializing device...\n");
s.status = bladerf_open(&s.tx.dev, devstr);
if (s.status != 0) {
fprintf(stderr, "Failed to open device: %s\n", bladerf_strerror(s.status));
goto out;
}
s.status = bladerf_set_frequency(s.tx.dev, BLADERF_MODULE_TX, TX_FREQUENCY);
if (s.status != 0) {
fprintf(stderr, "Faield to set TX frequency: %s\n", bladerf_strerror(s.status));
goto out;
}
else {
printf("TX frequency: %u Hz\n", TX_FREQUENCY);
}
s.status = bladerf_set_sample_rate(s.tx.dev, BLADERF_MODULE_TX, TX_SAMPLERATE, NULL);
if (s.status != 0) {
fprintf(stderr, "Failed to set TX sample rate: %s\n", bladerf_strerror(s.status));
goto out;
}
else {
printf("TX sample rate: %u sps\n", TX_SAMPLERATE);
}
s.status = bladerf_set_bandwidth(s.tx.dev, BLADERF_MODULE_TX, TX_BANDWIDTH, NULL);
if (s.status != 0) {
fprintf(stderr, "Failed to set TX bandwidth: %s\n", bladerf_strerror(s.status));
goto out;
}
else {
printf("TX bandwidth: %u Hz\n", TX_BANDWIDTH);
}
s.status = bladerf_set_txvga1(s.tx.dev, TX_VGA1);
if (s.status != 0) {
fprintf(stderr, "Failed to set TX VGA1 gain: %s\n", bladerf_strerror(s.status));
goto out;
}
else {
printf("TX VGA1 gain: %d dB\n", TX_VGA1);
}
s.status = bladerf_set_txvga2(s.tx.dev, TX_VGA2);
if (s.status != 0) {
fprintf(stderr, "Failed to set TX VGA2 gain: %s\n", bladerf_strerror(s.status));
goto out;
}
else {
printf("TX VGA2 gain: %d dB\n", TX_VGA2);
}
// Start GPS task.
s.status = start_gps_task(&s);
if (s.status < 0) {
fprintf(stderr, "Failed to start GPS task.\n");
goto out;
}
else
printf("Creating GPS task...\n");
// Wait until GPS task is initialized
pthread_mutex_lock(&(s.tx.lock));
while (!s.gps.ready)
pthread_cond_wait(&(s.gps.initialization_done), &(s.tx.lock));
pthread_mutex_unlock(&(s.tx.lock));
// Fillfull the FIFO.
if (is_fifo_write_ready(&s))
pthread_cond_signal(&(s.fifo_write_ready));
// Configure the TX module for use with the synchronous interface.
s.status = bladerf_sync_config(s.tx.dev,
BLADERF_MODULE_TX,
BLADERF_FORMAT_SC16_Q11,
NUM_BUFFERS,
SAMPLES_PER_BUFFER,
NUM_TRANSFERS,
TIMEOUT_MS);
if (s.status != 0) {
fprintf(stderr, "Failed to configure TX sync interface: %s\n", bladerf_strerror(s.status));
goto out;
}
// We must always enable the modules *after* calling bladerf_sync_config().
s.status = bladerf_enable_module(s.tx.dev, BLADERF_MODULE_TX, true);
if (s.status != 0) {
fprintf(stderr, "Failed to enable TX module: %s\n", bladerf_strerror(s.status));
goto out;
}
// Start TX task
s.status = start_tx_task(&s);
if (s.status < 0) {
fprintf(stderr, "Failed to start TX task.\n");
goto out;
}
else
printf("Creating TX task...\n");
// Running...
printf("Running...\n");
printf("Press 'q' to exit.\n");
while (1) {
c = _getch();
if (c=='q')
break;
}
//
// TODO: Cleaning up the threads properly.
//
printf("\nDone!\n");
// Disable TX module, shutting down our underlying TX stream.
s.status = bladerf_enable_module(s.tx.dev, BLADERF_MODULE_TX, false);
if (s.status != 0) {
fprintf(stderr, "Failed to disable TX module: %s\n", bladerf_strerror(s.status));
}
out:
// Free up resources
if (s.tx.buffer != NULL)
free(s.tx.buffer);
if (s.fifo != NULL)
free(s.fifo);
printf("Closing device...\n");
bladerf_close(s.tx.dev);
return(0);
}
int main(int argc, char *argv[])
{
sim_t s;
char *devstr = NULL;
int c;
// Initialize structures
init_sim(&s);
// Allocate TX buffer to hold each block of samples to transmit.
s.tx.buffer = (int16_t *)malloc(SAMPLES_PER_BUFFER * sizeof(int16_t) * 2); // for 16-bit I and Q samples
if (s.tx.buffer == NULL) {
fprintf(stderr, "Failed to allocate TX buffer.\n");
goto out;
}
// Allocate FIFOs to hold 0.1 seconds of I/Q samples each.
s.fifo = (int16_t *)malloc(FIFO_LENGTH * sizeof(int16_t) * 2); // for 16-bit I and Q samples
if (s.fifo == NULL) {
fprintf(stderr, "Failed to allocate I/Q sample buffer.\n");
goto out;
}
// Initializing device.
printf("Opening and initializing device...\n");
s.status = bladerf_open(&s.tx.dev, devstr);
if (s.status != 0) {
fprintf(stderr, "Failed to open device: %s\n", bladerf_strerror(s.status));
goto out;
}
s.status = bladerf_set_frequency(s.tx.dev, BLADERF_MODULE_TX, TX_FREQUENCY);
if (s.status != 0) {
fprintf(stderr, "Faield to set TX frequency: %s\n", bladerf_strerror(s.status));
goto out;
}
else {
printf("TX frequency: %u Hz\n", TX_FREQUENCY);
}
s.status = bladerf_set_sample_rate(s.tx.dev, BLADERF_MODULE_TX, TX_SAMPLERATE, NULL);
if (s.status != 0) {
fprintf(stderr, "Failed to set TX sample rate: %s\n", bladerf_strerror(s.status));
goto out;
}
else {
printf("TX sample rate: %u sps\n", TX_SAMPLERATE);
}
s.status = bladerf_set_bandwidth(s.tx.dev, BLADERF_MODULE_TX, TX_BANDWIDTH, NULL);
if (s.status != 0) {
fprintf(stderr, "Failed to set TX bandwidth: %s\n", bladerf_strerror(s.status));
goto out;
}
else {
printf("TX bandwidth: %u Hz\n", TX_BANDWIDTH);
}
s.status = bladerf_set_txvga1(s.tx.dev, TX_VGA1);
if (s.status != 0) {
fprintf(stderr, "Failed to set TX VGA1 gain: %s\n", bladerf_strerror(s.status));
goto out;
}
else {
printf("TX VGA1 gain: %d dB\n", TX_VGA1);
}
s.status = bladerf_set_txvga2(s.tx.dev, TX_VGA2);
if (s.status != 0) {
fprintf(stderr, "Failed to set TX VGA2 gain: %s\n", bladerf_strerror(s.status));
goto out;
}
else {
printf("TX VGA2 gain: %d dB\n", TX_VGA2);
}
// Start GPS task.
s.status = start_gps_task(&s);
if (s.status < 0) {
fprintf(stderr, "Failed to start GPS task.\n");
goto out;
}
else
printf("Creating GPS task...\n");
// Wait until GPS task is initialized
pthread_mutex_lock(&(s.tx.lock));
while (!s.gps.ready)
pthread_cond_wait(&(s.gps.initialization_done), &(s.tx.lock));
pthread_mutex_unlock(&(s.tx.lock));
// Fillfull the FIFO.
if (is_fifo_write_ready(&s))
pthread_cond_signal(&(s.fifo_write_ready));
// Configure the TX module for use with the synchronous interface.
s.status = bladerf_sync_config(s.tx.dev,
BLADERF_MODULE_TX,
BLADERF_FORMAT_SC16_Q11,
NUM_BUFFERS,
SAMPLES_PER_BUFFER,
NUM_TRANSFERS,
TIMEOUT_MS);
if (s.status != 0) {
fprintf(stderr, "Failed to configure TX sync interface: %s\n", bladerf_strerror(s.status));
goto out;
}
// We must always enable the modules *after* calling bladerf_sync_config().
s.status = bladerf_enable_module(s.tx.dev, BLADERF_MODULE_TX, true);
if (s.status != 0) {
fprintf(stderr, "Failed to enable TX module: %s\n", bladerf_strerror(s.status));
goto out;
}
// Start TX task
s.status = start_tx_task(&s);
if (s.status < 0) {
fprintf(stderr, "Failed to start TX task.\n");
goto out;
}
else
printf("Creating TX task...\n");
// Running...
printf("Running...\n");
printf("Press 'q' to exit.\n");
while (1) {
c = _getch();
if (c=='q')
break;
}
//
// TODO: Cleaning up the threads properly.
//
printf("\nDone!\n");
// Disable TX module, shutting down our underlying TX stream.
s.status = bladerf_enable_module(s.tx.dev, BLADERF_MODULE_TX, false);
if (s.status != 0) {
fprintf(stderr, "Failed to disable TX module: %s\n", bladerf_strerror(s.status));
}
out:
// Free up resources
if (s.tx.buffer != NULL)
free(s.tx.buffer);
if (s.fifo != NULL)
free(s.fifo);
printf("Closing device...\n");
bladerf_close(s.tx.dev);
return(0);
}