static void *monitor_thread_fn(void *device_name)
{
struct iio_context *ctx;
struct iio_device *dev;
uint32_t val;
int ret;
ctx = iio_create_default_context();
if (!ctx) {
fprintf(stderr, "Unable to create IIO context\n");
return (void *)-1;
}
dev = get_device(ctx, device_name);
if (!dev) {
fprintf(stderr, "Unable to find IIO device\n");
iio_context_destroy(ctx);
return (void *)-1;
}
/* Give the main thread a moment to start the DMA */
sleep(1);
/* Clear all status bits */
iio_device_reg_write(dev, 0x80000088, 0x6);
while (app_running) {
ret = iio_device_reg_read(dev, 0x80000088, &val);
if (ret) {
fprintf(stderr, "Failed to read status register: %s\n",
strerror(-ret));
continue;
}
if (device_is_tx) {
if (val & 1)
fprintf(stderr, "Underflow detected\n");
} else {
if (val & 4)
fprintf(stderr, "Overflow detected\n");
}
/* Clear bits */
if (val)
iio_device_reg_write(dev, 0x80000088, val);
sleep(1);
}
iio_context_destroy(ctx);
return (void *)0;
}
int main(int argc, char **argv)
{
unsigned int i, nb_channels;
unsigned int buffer_size = SAMPLES_PER_READ;
int c, option_index = 0, arg_index = 0, ip_index = 0;
struct iio_device *dev;
size_t sample_size;
while ((c = getopt_long(argc, argv, "+hn:t:b:s:",
options, &option_index)) != -1) {
switch (c) {
case 'h':
usage();
return EXIT_SUCCESS;
case 'n':
arg_index += 2;
ip_index = arg_index;
break;
case 't':
arg_index += 2;
trigger_name = argv[arg_index];
break;
case 'b':
arg_index += 2;
buffer_size = atoi(argv[arg_index]);
break;
case 's':
arg_index += 2;
num_samples = atoi(argv[arg_index]);
break;
case '?':
return EXIT_FAILURE;
}
}
if (arg_index + 1 >= argc) {
fprintf(stderr, "Incorrect number of arguments.\n\n");
usage();
return EXIT_FAILURE;
}
if (ip_index)
ctx = iio_create_network_context(argv[ip_index]);
else
ctx = iio_create_default_context();
if (!ctx) {
fprintf(stderr, "Unable to create IIO context\n");
return EXIT_FAILURE;
}
#ifndef _WIN32
set_handler(SIGHUP, &quit_all);
#endif
set_handler(SIGINT, &quit_all);
set_handler(SIGSEGV, &quit_all);
set_handler(SIGTERM, &quit_all);
dev = get_device(ctx, argv[arg_index + 1]);
if (!dev) {
iio_context_destroy(ctx);
return EXIT_FAILURE;
}
if (trigger_name) {
struct iio_device *trigger = get_device(ctx, trigger_name);
if (!trigger) {
iio_context_destroy(ctx);
return EXIT_FAILURE;
}
if (!iio_device_is_trigger(trigger)) {
fprintf(stderr, "Specified device is not a trigger\n");
iio_context_destroy(ctx);
return EXIT_FAILURE;
}
/* Fixed rate for now */
iio_device_attr_write_longlong(trigger, "frequency", 100);
iio_device_set_trigger(dev, trigger);
}
nb_channels = iio_device_get_channels_count(dev);
if (argc == arg_index + 2) {
/* Enable all channels */
for (i = 0; i < nb_channels; i++)
iio_channel_enable(iio_device_get_channel(dev, i));
} else {
for (i = 0; i < nb_channels; i++) {
unsigned int j;
struct iio_channel *ch = iio_device_get_channel(dev, i);
for (j = arg_index + 2; j < argc; j++) {
const char *n = iio_channel_get_name(ch);
if (!strcmp(argv[j], iio_channel_get_id(ch)) ||
(n && !strcmp(n, argv[j])))
iio_channel_enable(ch);
}
}
}
sample_size = iio_device_get_sample_size(dev);
buffer = iio_device_create_buffer(dev, buffer_size, false);
if (!buffer) {
fprintf(stderr, "Unable to allocate buffer\n");
iio_context_destroy(ctx);
return EXIT_FAILURE;
}
while (app_running) {
int ret = iio_buffer_refill(buffer);
if (ret < 0) {
fprintf(stderr, "Unable to refill buffer: %s\n",
strerror(-ret));
break;
}
/* If there are only the samples we requested, we don't need to
* demux */
if (iio_buffer_step(buffer) == sample_size) {
void *start = iio_buffer_start(buffer);
ptrdiff_t len = (intptr_t) iio_buffer_end(buffer) -
(intptr_t) start;
size_t read_len;
if (num_samples && len > num_samples * sample_size)
len = num_samples * sample_size;
for (read_len = len; len; ) {
ssize_t nb = fwrite(start, 1, len, stdout);
if (nb < 0) {
fprintf(stderr, "Unable to write data!\n");
goto err_destroy_buffer;
}
len -= nb;
start = (void *)((intptr_t) start + nb);
}
if (num_samples) {
num_samples -= read_len / sample_size;
if (!num_samples)
quit_all(EXIT_SUCCESS);
}
} else {
iio_buffer_foreach_sample(buffer, print_sample, NULL);
}
}
err_destroy_buffer:
iio_buffer_destroy(buffer);
iio_context_destroy(ctx);
return exit_code;
}
/* simple configuration and streaming */
int main (int argc, char **argv){
int child=fork();
if (child==-1) {DieWithError("socket() failed");}
//Father code
else if (child==0){
pause();
// sleep(5); //Child run first
// Streaming devices
struct iio_device *rx;
// Stream configurations
struct stream_cfg rxcfg;
// Listen to ctrl+c and assert
signal(SIGINT, shutdowniio);
// RX stream config
rxcfg.bw_hz = MHZ(28); // 2 MHz rf bandwidth //200KHz-56MHz Channel bandwidths
rxcfg.fs_hz = MHZ(61.44); // 2 MS/s rx sample rate // 61.44
rxcfg.lo_hz = GHZ(2.5); // 2.5 GHz rf frequency //70MHz -6 GHz Local-oscilator
rxcfg.rfport = "A_BALANCED"; // port A (select for rf freq.)
if(verbose==1) printf("* Acquiring IIO context\n");
assert((ctx = iio_create_default_context()) && "No context");
assert(iio_context_get_devices_count(ctx) > 0 && "No devices");
if(verbose==1) printf("* Acquiring AD9361 streaming devices\n");
assert(get_ad9361_stream_dev(ctx, RX, &rx) && "No rx dev found");
if(verbose==1) printf("* Configuring AD9361 for streaming\n");
assert(cfg_ad9361_streaming_ch(ctx, &rxcfg, RX, 0) && "RX port 0 not found");
if(verbose==1) printf("* Init AD9361 IIO streaming channels\n");
assert(get_ad9361_stream_ch(ctx, RX, rx, 0, &rx0_i) && "RX chan i not found");
assert(get_ad9361_stream_ch(ctx, RX, rx, 1, &rx0_q) && "RX chan q not found");
if(verbose==1) printf("* Enabling IIO streaming channels\n");
iio_channel_enable(rx0_i);
iio_channel_enable(rx0_q);
if(verbose==1) printf("* Creating non-cyclic buff with 1 MiS\n");
rxbuf = iio_device_create_buffer(rx, BUFF_SIZE/4, false);
struct sockaddr_in serv,serv2; /* Echo server address */
printf("* Server conection(192.168.0.229:50705)*");
/* Construct the server address structure */
memset(&serv, 0, sizeof(serv)); /* Zero out structure */
serv.sin_family = AF_INET; /* Internet addr family */
serv.sin_addr.s_addr = inet_addr("192.168.0.229"); /* Server IP address */
serv.sin_port = htons(50705); /* Server port */
memset(&serv2, 0, sizeof(serv2)); /* Zero out structure */
serv2.sin_family = AF_INET; /* Internet addr family */
serv2.sin_addr.s_addr = inet_addr("192.168.0.229"); /* Server IP address */
serv2.sin_port = htons(50705); /* Server port */
/* Create a datagram/UDP socket */
if ((sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
DieWithError("socket() failed");
if ((sock2 = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
DieWithError("socket2() failed");
/* Connecting to the server */
if (connect(sock,(struct sockaddr *)&serv, sizeof(serv)) < 0) DieWithError("socket() failed");
if (connect(sock2,(struct sockaddr *)&serv2, sizeof(serv2)) < 0) DieWithError("socket() failed");
/* Sincronization */
printf("\n* Sended AK *");
if (sendto(sock, "AK", 2, 0, (struct sockaddr *)&serv, sizeof(serv)) != 2)
DieWithError("sendto() sent a different number of bytes than expected");
fromSize = sizeof(fromAddr);
rsplen = recvfrom(sock, buff_from_n, 1024*32, 0,(struct sockaddr *) &fromAddr, &fromSize);
if(rsplen!= 2){ DieWithError("recvfrom() failed");}
if (serv.sin_addr.s_addr != fromAddr.sin_addr.s_addr) {printf("Unknown client.\n"); exit(1);}
buff_from_n[rsplen] = '\0';
printf("\n* Received %s *\n", (char*)buff_from_n);
if(verbose==1) printf("* Starting IO streaming ");
int status;
ssize_t nbytes_rx=0;
void *p_dat ,*p_end;
pthread_t tid,tid2;
//Fill buffer from antena
nbytes_rx = iio_buffer_refill(rxbuf);
if (nbytes_rx < 0) { printf("Error refilling buf %d\n",(int) nbytes_rx); shutdowniio(0); }
p_end = iio_buffer_end(rxbuf);
p_dat = iio_buffer_first(rxbuf, rx0_i);
memcpy (buff_from_a, p_dat, (&p_end-&p_dat));
printf("\n* Ready for fast transfer *");
sec_begin= time(NULL);
while(sec_elapsed<10)
{
sec_end=time(NULL);
sec_elapsed=sec_end-sec_begin;
//Send data to network
memcpy (buff_from_a, p_dat, (&p_end-&p_dat));
if(pthread_create(&tid, NULL, send_msg1,(int*)sock)!=0){
printf ("\nPthread_create");exit(1);}
// if(pthread_create(&tid2, NULL, send_msg2,(int*)sock)!=0){
// printf ("\nPthread_create");exit(1);}
//Fill buffer from antena
nbytes_rx = iio_buffer_refill(rxbuf);
if (nbytes_rx < 0) { printf("Error refilling buf %d\n",(int) nbytes_rx); shutdowniio(0); }
p_end = iio_buffer_end(rxbuf);
p_dat = iio_buffer_first(rxbuf, rx0_i);
count=count+nbytes_rx;
//Syncronizing
if(pthread_join(tid ,(void**)&status)!=0){printf ("Pthread_join");exit(1);}
// if(pthread_join(tid2,(void**)&status)!=0){printf ("Pthread_join");exit(1);}
}
printf("\n\tTime elapsed: %lus \n\tAntena recived %llu MB\tDebit %llu Mb/sec ",
sec_elapsed, count/1024/1024, count/sec_elapsed/1024/1024);
printf("\n\tSocket sended %lld Mb \n",sendcount/1024/1024);
//printf("\nBytes sendeded %llu ",summ);
close(sock);
close(tcpsock);
return 0;
}//End Parent
//Child programm
else if (child!=0){
//pause();
// Listen to ctrl+c and assert
signal(SIGINT, shutdowniio);
struct iio_device *tx; // Streaming devices
struct stream_cfg txcfg; // Stream configurations
// TX stream config
txcfg.bw_hz = MHZ(28); // 1.5 MHz rf bandwidth
txcfg.fs_hz = MHZ(61.44); // 2 MS/s tx sample rate
txcfg.lo_hz = GHZ(2.5); // 2.5 GHz rf frequency
txcfg.rfport = "A"; // port A (select for rf freq.)
if(verbose==1) printf("\t\t\t\t\t* Acquiring IIO context\n");
assert((ctx = iio_create_default_context()) && "No context");
assert(iio_context_get_devices_count(ctx) > 0 && "No devices");
if(verbose==1) printf("\t\t\t\t\t* Acquiring AD9361 streaming devices\n");
assert(get_ad9361_stream_dev(ctx, TX, &tx) && "No tx dev found");
if(verbose==1) printf("\t\t\t\t\t* Configuring AD9361 for streaming\n");
assert(cfg_ad9361_streaming_ch(ctx, &txcfg, TX, 0) && "TX port 0 not found");
if(verbose==1) printf("\t\t\t\t\t* Initializing AD9361 IIO streaming channels\n");
assert(get_ad9361_stream_ch(ctx, TX, tx, 0, &tx0_i) && "TX chan i not found");
assert(get_ad9361_stream_ch(ctx, TX, tx, 1, &tx0_q) && "TX chan q not found");
if(verbose==1) printf("\t\t\t\t\t* Enabling IIO streaming channels\n");
iio_channel_enable(tx0_i);
iio_channel_enable(tx0_q);
if(verbose==1) printf("\t\t\t\t\t* Creating non-cyclic IIO buffers with 1 MiS\n");
txbuf = iio_device_create_buffer(tx, BUFF_SIZE/4, false);
printf("\t\t\t\t\t* Server conection*\n");
struct sockaddr_in serv; /* Echo server address */
/* Construct the server address structure */
memset(&serv, 0, sizeof(serv)); /* Zero out structure */
serv.sin_family = AF_INET; /* Internet addr family */
serv.sin_addr.s_addr = inet_addr("192.168.0.229"); /* Server IP address */
serv.sin_port = htons(50707); /* Server port */
/* Create a datagram/UDP socket */
if ((sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) DieWithError("socket() failed");
/* Connecting to the server */
//if (connect(sock,(struct sockaddr *)&serv, sizeof(serv)) < 0) DieWithError("socket() failed");
//pause();
/* Sincronization */
printf("\t\t\t\t\t* Sended AK *\n");
if (sendto(sock, "AK", 2, 0, (struct sockaddr *)&serv, sizeof(serv)) != 2)
DieWithError("sendto() sent a different number of bytes than expected");
fromSize = sizeof(fromAddr);
rsplen = recvfrom(sock, buff_from_n, 1024*32, 0,(struct sockaddr *) &fromAddr, &fromSize);
if(rsplen!= 2){ DieWithError("recvfrom() failed");}
if (serv.sin_addr.s_addr != fromAddr.sin_addr.s_addr) {printf("Unknown client.\n"); exit(1); }
buff_from_n[rsplen] = '\0';
printf("\t\t\t\t\t* Received %s *", (char*)buff_from_n);
int status;
ssize_t nbytes_tx=0;
void *t_dat,*t_end;
pthread_t tid3;
setpriority(PRIO_PROCESS, 0, -20);
//Fill buff_from_n from network
if(pthread_create(&tid3, NULL, recv_msg,(int*)sock)!=0){
printf ("\nPthread_create\n");exit(1);}
if(pthread_join(tid3,(void**)&status)!=0){printf ("Pthread_join");exit(1);}
//Bug push after in the third try
nbytes_tx = iio_buffer_push(txbuf);
nbytes_tx = iio_buffer_push(txbuf);
printf("\n\t\t\t\t\tReciving........ ");
while(1)
{
//Fill TXbuffer
t_end = iio_buffer_end(txbuf);
t_dat = iio_buffer_first(txbuf, tx0_i);
memcpy(t_dat,buff_from_n, (1024*1024));
nbytes_tx = iio_buffer_push(txbuf);
//Fill buff_from_n from network
if(pthread_create(&tid3, NULL, recv_msg,(int*)sock)!=0){printf ("\nPthread_create\n");exit(1);}
// Send buffer to antena
if (nbytes_tx < 0) { printf("Error pushing buf %d\n", (int) nbytes_tx); shutdowniio(0); }
count2=count2+nbytes_tx;
if(pthread_join(tid3,(void**)&status)!=0){printf ("Pthread_join");exit(1);}
if(status==1){ break; }
}
t_end = iio_buffer_end(txbuf);
t_dat = iio_buffer_first(txbuf, tx0_i);
memcpy(t_dat,buff_from_n, (&t_end-&t_dat));
nbytes_tx = iio_buffer_push(txbuf);
if (nbytes_tx < 0) { printf("Error pushing buf %d\n", (int) nbytes_tx); shutdowniio(0); }
count2=count2+nbytes_tx;
printf("\n\t\t\t\t\tRecived from net %llu MB",recvcount/1024/1024);
printf("\tSended to antena %lld Mb \n",count2/1024/1024);
}
return 0;
}//End of the life
int main(int argc, char **argv)
{
char *xml;
struct iio_context *ctx;
int c, option_index = 0, arg_index = 0, xml_index = 0, ip_index = 0;
enum backend backend = LOCAL;
while ((c = getopt_long(argc, argv, "+hn:x:",
options, &option_index)) != -1) {
switch (c) {
case 'h':
usage();
return EXIT_SUCCESS;
case 'n':
if (backend != LOCAL) {
fprintf(stderr, "-x and -n are mutually exclusive\n");
return EXIT_FAILURE;
}
backend = NETWORK;
arg_index += 2;
ip_index = arg_index;
break;
case 'x':
if (backend != LOCAL) {
fprintf(stderr, "-x and -n are mutually exclusive\n");
return EXIT_FAILURE;
}
backend = XML;
arg_index += 2;
xml_index = arg_index;
break;
case '?':
return EXIT_FAILURE;
}
}
if (arg_index >= argc) {
fprintf(stderr, "Incorrect number of arguments.\n\n");
usage();
return EXIT_FAILURE;
}
if (backend == XML)
ctx = iio_create_xml_context(argv[xml_index]);
else if (backend == NETWORK)
ctx = iio_create_network_context(argv[ip_index]);
else
ctx = iio_create_default_context();
if (!ctx) {
fprintf(stderr, "Unable to create IIO context\n");
return EXIT_FAILURE;
}
xml = strdup(iio_context_get_xml(ctx));
if (!xml) {
iio_context_destroy(ctx);
return EXIT_FAILURE;
}
printf("XML generated:\n\n%s\n\n", xml);
iio_context_destroy(ctx);
ctx = iio_create_xml_context_mem(xml, strlen(xml));
if (!ctx) {
fprintf(stderr, "Unable to re-generate context\n");
} else {
printf("Context re-creation from generated XML suceeded!\n");
iio_context_destroy(ctx);
}
free(xml);
return EXIT_SUCCESS;
}
int main(int argc, char **argv)
{
unsigned int buffer_size = 1024 * 1024;
int c, option_index = 0, arg_index = 0;
unsigned int n_tx = 0, n_rx = 0;
static struct iio_context *ctx;
unsigned int i, nb_channels;
struct iio_buffer *buffer;
pthread_t monitor_thread;
const char *device_name;
struct iio_device *dev;
char unit;
int ret;
while ((c = getopt_long(argc, argv, "+hs:",
options, &option_index)) != -1) {
switch (c) {
case 'h':
usage(argv);
return EXIT_SUCCESS;
case 's':
arg_index += 2;
ret = sscanf(argv[arg_index], "%u%c", &buffer_size, &unit);
if (ret == 0)
return EXIT_FAILURE;
if (ret == 2) {
if (unit == 'k')
buffer_size *= 1024;
else if (unit == 'M')
buffer_size *= 1024 * 1024;
}
break;
case '?':
return EXIT_FAILURE;
}
}
if (arg_index + 1 >= argc) {
fprintf(stderr, "Incorrect number of arguments.\n\n");
usage(argv);
return EXIT_FAILURE;
}
#ifndef _WIN32
set_handler(SIGHUP, &quit_all);
#endif
set_handler(SIGINT, &quit_all);
set_handler(SIGSEGV, &quit_all);
set_handler(SIGTERM, &quit_all);
ctx = iio_create_default_context();
if (!ctx) {
fprintf(stderr, "Unable to create IIO context\n");
return EXIT_FAILURE;
}
device_name = argv[arg_index + 1];
dev = get_device(ctx, device_name);
if (!dev) {
iio_context_destroy(ctx);
return EXIT_FAILURE;
}
nb_channels = iio_device_get_channels_count(dev);
for (i = 0; i < nb_channels; i++) {
struct iio_channel *ch = iio_device_get_channel(dev, i);
if (!iio_channel_is_scan_element(ch))
continue;
iio_channel_enable(ch);
if (iio_channel_is_output(ch))
n_tx++;
else
n_rx++;
}
if (n_tx >= n_rx)
device_is_tx = true;
else
device_is_tx = false;
printf("Monitoring %s for underflows/overflows\n",
iio_device_get_name(dev));
buffer = iio_device_create_buffer(dev, buffer_size, false);
if (!buffer) {
fprintf(stderr, "Unable to allocate buffer\n");
iio_context_destroy(ctx);
return EXIT_FAILURE;
}
ret = pthread_create(&monitor_thread, NULL, monitor_thread_fn,
(void *)device_name);
if (ret) {
fprintf(stderr, "Failed to create monitor thread: %s\n",
strerror(-ret));
}
while (app_running) {
if (device_is_tx) {
ret = iio_buffer_push(buffer);
if (ret < 0) {
fprintf(stderr, "Unable to push buffer: %s\n",
strerror(-ret));
app_running = false;
break;
}
} else {
ret = iio_buffer_refill(buffer);
if (ret < 0) {
fprintf(stderr, "Unable to refill buffer: %s\n",
strerror(-ret));
app_running = false;
break;
}
}
}
iio_buffer_destroy(buffer);
iio_context_destroy(ctx);
pthread_join(monitor_thread, NULL);
return 0;
}
int main(int argc, char **argv)
{
unsigned int i, nb_channels;
unsigned int buffer_size = SAMPLES_PER_READ;
const char *arg_uri = NULL;
const char *arg_ip = NULL;
int c, option_index = 0;
struct iio_device *dev;
size_t sample_size;
int timeout = -1;
bool scan_for_context = false;
while ((c = getopt_long(argc, argv, "+hn:u:t:b:s:T:a",
options, &option_index)) != -1) {
switch (c) {
case 'h':
usage();
return EXIT_SUCCESS;
case 'n':
arg_ip = optarg;
break;
case 'u':
arg_uri = optarg;
break;
case 'a':
scan_for_context = true;
break;
case 't':
trigger_name = optarg;
break;
case 'b':
buffer_size = atoi(optarg);
break;
case 's':
num_samples = atoi(optarg);
break;
case 'T':
timeout = atoi(optarg);
break;
case '?':
return EXIT_FAILURE;
}
}
if (argc == optind) {
fprintf(stderr, "Incorrect number of arguments.\n\n");
usage();
return EXIT_FAILURE;
}
setup_sig_handler();
if (scan_for_context)
ctx = scan();
else if (arg_uri)
ctx = iio_create_context_from_uri(arg_uri);
else if (arg_ip)
ctx = iio_create_network_context(arg_ip);
else
ctx = iio_create_default_context();
if (!ctx) {
fprintf(stderr, "Unable to create IIO context\n");
return EXIT_FAILURE;
}
if (timeout >= 0)
iio_context_set_timeout(ctx, timeout);
dev = iio_context_find_device(ctx, argv[optind]);
if (!dev) {
fprintf(stderr, "Device %s not found\n", argv[optind]);
iio_context_destroy(ctx);
return EXIT_FAILURE;
}
if (trigger_name) {
struct iio_device *trigger = iio_context_find_device(
ctx, trigger_name);
if (!trigger) {
fprintf(stderr, "Trigger %s not found\n", trigger_name);
iio_context_destroy(ctx);
return EXIT_FAILURE;
}
if (!iio_device_is_trigger(trigger)) {
fprintf(stderr, "Specified device is not a trigger\n");
iio_context_destroy(ctx);
return EXIT_FAILURE;
}
/*
* Fixed rate for now. Try new ABI first,
* fail gracefully to remain compatible.
*/
if (iio_device_attr_write_longlong(trigger,
"sampling_frequency", DEFAULT_FREQ_HZ) < 0)
iio_device_attr_write_longlong(trigger,
"frequency", DEFAULT_FREQ_HZ);
iio_device_set_trigger(dev, trigger);
}
nb_channels = iio_device_get_channels_count(dev);
if (argc == optind + 1) {
/* Enable all channels */
for (i = 0; i < nb_channels; i++)
iio_channel_enable(iio_device_get_channel(dev, i));
} else {
for (i = 0; i < nb_channels; i++) {
unsigned int j;
struct iio_channel *ch = iio_device_get_channel(dev, i);
for (j = optind + 1; j < (unsigned int) argc; j++) {
const char *n = iio_channel_get_name(ch);
if (!strcmp(argv[j], iio_channel_get_id(ch)) ||
(n && !strcmp(n, argv[j])))
iio_channel_enable(ch);
}
}
}
sample_size = iio_device_get_sample_size(dev);
buffer = iio_device_create_buffer(dev, buffer_size, false);
if (!buffer) {
char buf[256];
iio_strerror(errno, buf, sizeof(buf));
fprintf(stderr, "Unable to allocate buffer: %s\n", buf);
iio_context_destroy(ctx);
return EXIT_FAILURE;
}
while (app_running) {
int ret = iio_buffer_refill(buffer);
if (ret < 0) {
if (app_running) {
char buf[256];
iio_strerror(-ret, buf, sizeof(buf));
fprintf(stderr, "Unable to refill buffer: %s\n", buf);
}
break;
}
/* If there are only the samples we requested, we don't need to
* demux */
if (iio_buffer_step(buffer) == sample_size) {
void *start = iio_buffer_start(buffer);
size_t read_len, len = (intptr_t) iio_buffer_end(buffer)
- (intptr_t) start;
if (num_samples && len > num_samples * sample_size)
len = num_samples * sample_size;
for (read_len = len; len; ) {
size_t nb = fwrite(start, 1, len, stdout);
if (!nb)
goto err_destroy_buffer;
len -= nb;
start = (void *)((intptr_t) start + nb);
}
if (num_samples) {
num_samples -= read_len / sample_size;
if (!num_samples)
quit_all(EXIT_SUCCESS);
}
} else {
iio_buffer_foreach_sample(buffer, print_sample, NULL);
}
}
err_destroy_buffer:
iio_buffer_destroy(buffer);
iio_context_destroy(ctx);
return exit_code;
}
/* simple configuration and streaming */
int main (int argc, char **argv)
{
// Streaming devices
struct iio_device *tx;
struct iio_device *rx;
// RX and TX sample counters
size_t nrx = 0;
size_t ntx = 0;
// Stream configurations
struct stream_cfg rxcfg;
struct stream_cfg txcfg;
// Listen to ctrl+c and assert
signal(SIGINT, handle_sig);
// RX stream config
rxcfg.bw_hz = MHZ(2); // 2 MHz rf bandwidth
rxcfg.fs_hz = MHZ(2.5); // 2.5 MS/s rx sample rate
rxcfg.lo_hz = GHZ(2.5); // 2.5 GHz rf frequency
rxcfg.rfport = "A_BALANCED"; // port A (select for rf freq.)
// TX stream config
txcfg.bw_hz = MHZ(1.5); // 1.5 MHz rf bandwidth
txcfg.fs_hz = MHZ(2.5); // 2.5 MS/s tx sample rate
txcfg.lo_hz = GHZ(2.5); // 2.5 GHz rf frequency
txcfg.rfport = "A"; // port A (select for rf freq.)
printf("* Acquiring IIO context\n");
assert((ctx = iio_create_default_context()) && "No context");
assert(iio_context_get_devices_count(ctx) > 0 && "No devices");
printf("* Acquiring AD9361 streaming devices\n");
assert(get_ad9361_stream_dev(ctx, TX, &tx) && "No tx dev found");
assert(get_ad9361_stream_dev(ctx, RX, &rx) && "No rx dev found");
printf("* Configuring AD9361 for streaming\n");
assert(cfg_ad9361_streaming_ch(ctx, &rxcfg, RX, 0) && "RX port 0 not found");
assert(cfg_ad9361_streaming_ch(ctx, &txcfg, TX, 0) && "TX port 0 not found");
printf("* Initializing AD9361 IIO streaming channels\n");
assert(get_ad9361_stream_ch(ctx, RX, rx, 0, &rx0_i) && "RX chan i not found");
assert(get_ad9361_stream_ch(ctx, RX, rx, 1, &rx0_q) && "RX chan q not found");
assert(get_ad9361_stream_ch(ctx, TX, tx, 0, &tx0_i) && "TX chan i not found");
assert(get_ad9361_stream_ch(ctx, TX, tx, 1, &tx0_q) && "TX chan q not found");
printf("* Enabling IIO streaming channels\n");
iio_channel_enable(rx0_i);
iio_channel_enable(rx0_q);
iio_channel_enable(tx0_i);
iio_channel_enable(tx0_q);
printf("* Creating non-cyclic IIO buffers with 1 MiS\n");
rxbuf = iio_device_create_buffer(rx, 1024*1024, false);
if (!rxbuf) {
perror("Could not create RX buffer");
shutdown();
}
txbuf = iio_device_create_buffer(tx, 1024*1024, false);
if (!txbuf) {
perror("Could not create TX buffer");
shutdown();
}
printf("* Starting IO streaming (press CTRL+C to cancel)\n");
while (!stop)
{
ssize_t nbytes_rx, nbytes_tx;
void *p_dat, *p_end;
ptrdiff_t p_inc;
// Schedule TX buffer
nbytes_tx = iio_buffer_push(txbuf);
if (nbytes_tx < 0) { printf("Error pushing buf %d\n", (int) nbytes_tx); shutdown(); }
// Refill RX buffer
nbytes_rx = iio_buffer_refill(rxbuf);
if (nbytes_rx < 0) { printf("Error refilling buf %d\n",(int) nbytes_rx); shutdown(); }
// READ: Get pointers to RX buf and read IQ from RX buf port 0
p_inc = iio_buffer_step(rxbuf);
p_end = iio_buffer_end(rxbuf);
for (p_dat = iio_buffer_first(rxbuf, rx0_i); p_dat < p_end; p_dat += p_inc) {
// Example: swap I and Q
const int16_t i = ((int16_t*)p_dat)[0]; // Real (I)
const int16_t q = ((int16_t*)p_dat)[1]; // Imag (Q)
((int16_t*)p_dat)[0] = q;
((int16_t*)p_dat)[1] = i;
}
// WRITE: Get pointers to TX buf and write IQ to TX buf port 0
p_inc = iio_buffer_step(txbuf);
p_end = iio_buffer_end(txbuf);
for (p_dat = iio_buffer_first(txbuf, tx0_i); p_dat < p_end; p_dat += p_inc) {
// Example: fill with zeros
((int16_t*)p_dat)[0] = 0; // Real (I)
((int16_t*)p_dat)[1] = 0; // Imag (Q)
}
// Sample counter increment and status output
nrx += nbytes_rx / iio_device_get_sample_size(rx);
ntx += nbytes_tx / iio_device_get_sample_size(tx);
printf("\tRX %8.2f MSmp, TX %8.2f MSmp\n", nrx/1e6, ntx/1e6);
}
shutdown();
return 0;
}
