int calibrate_dc(struct cli_state *s, unsigned int ops)
{
int retval = 0;
int status = BLADERF_ERR_UNEXPECTED;
struct settings rx_settings, tx_settings;
bladerf_loopback loopback;
int16_t dc_i, dc_q;
if (IS_RX_CAL(ops)) {
status = backup_and_update_settings(s->dev, BLADERF_MODULE_RX,
&rx_settings);
if (status != 0) {
s->last_lib_error = status;
return CLI_RET_LIBBLADERF;
}
}
if (IS_TX_CAL(ops)) {
status = backup_and_update_settings(s->dev, BLADERF_MODULE_TX,
&tx_settings);
if (status != 0) {
s->last_lib_error = status;
return CLI_RET_LIBBLADERF;
}
}
status = bladerf_get_loopback(s->dev, &loopback);
if (status != 0) {
s->last_lib_error = status;
return CLI_RET_LIBBLADERF;
}
if (IS_RX_CAL(ops)) {
status = set_rx_dc(s->dev, 0, 0);
if (status != 0) {
goto error;
}
status = bladerf_enable_module(s->dev, BLADERF_MODULE_RX, true);
if (status != 0) {
goto error;
}
}
if (IS_TX_CAL(ops)) {
status = bladerf_enable_module(s->dev, BLADERF_MODULE_RX, true);
if (status != 0) {
goto error;
}
status = bladerf_set_loopback(s->dev, BLADERF_LB_BB_TXVGA1_RXVGA2);
if (status != 0) {
goto error;
}
status = bladerf_enable_module(s->dev, BLADERF_MODULE_TX, true);
if (status != 0) {
goto error;
}
status = dummy_tx(s->dev);
if (status != 0) {
goto error;
}
status = bladerf_enable_module(s->dev, BLADERF_MODULE_TX, false);
if (status != 0) {
goto error;
}
}
status = bladerf_set_loopback(s->dev, BLADERF_LB_NONE);
if (status != 0) {
goto error;
}
putchar('\n');
if (IS_CAL(CAL_DC_LMS_TUNING, ops)) {
printf(" Calibrating LMS LPF tuning module...\n");
status = bladerf_calibrate_dc(s->dev, BLADERF_DC_CAL_LPF_TUNING);
if (status != 0) {
goto error;
} else {
struct bladerf_lms_dc_cals dc_cals;
status = bladerf_lms_get_dc_cals(s->dev, &dc_cals);
if (status != 0) {
goto error;
}
printf(" LPF tuning module: %d\n\n", dc_cals.lpf_tuning);
}
}
if (IS_CAL(CAL_DC_LMS_TXLPF, ops)) {
printf(" Calibrating LMS TX LPF modules...\n");
status = bladerf_calibrate_dc(s->dev, BLADERF_DC_CAL_TX_LPF);
if (status != 0) {
goto error;
} else {
struct bladerf_lms_dc_cals dc_cals;
status = bladerf_lms_get_dc_cals(s->dev, &dc_cals);
if (status != 0) {
goto error;
}
printf(" TX LPF I filter: %d\n", dc_cals.tx_lpf_i);
printf(" TX LPF Q filter: %d\n\n", dc_cals.tx_lpf_q);
}
}
if (IS_CAL(CAL_DC_LMS_RXLPF, ops)) {
printf(" Calibrating LMS RX LPF modules...\n");
status = bladerf_calibrate_dc(s->dev, BLADERF_DC_CAL_RX_LPF);
if (status != 0) {
goto error;
} else {
struct bladerf_lms_dc_cals dc_cals;
status = bladerf_lms_get_dc_cals(s->dev, &dc_cals);
if (status != 0) {
goto error;
}
printf(" RX LPF I filter: %d\n", dc_cals.rx_lpf_i);
printf(" RX LPF Q filter: %d\n\n", dc_cals.rx_lpf_q);
}
}
if (IS_CAL(CAL_DC_LMS_RXVGA2, ops)) {
printf(" Calibrating LMS RXVGA2 modules...\n");
status = bladerf_calibrate_dc(s->dev, BLADERF_DC_CAL_RXVGA2);
if (status != 0) {
goto error;
} else {
struct bladerf_lms_dc_cals dc_cals;
status = bladerf_lms_get_dc_cals(s->dev, &dc_cals);
if (status != 0) {
goto error;
}
printf(" RX VGA2 DC reference module: %d\n", dc_cals.dc_ref);
printf(" RX VGA2 stage 1, I channel: %d\n", dc_cals.rxvga2a_i);
printf(" RX VGA2 stage 1, Q channel: %d\n", dc_cals.rxvga2a_q);
printf(" RX VGA2 stage 2, I channel: %d\n", dc_cals.rxvga2b_i);
printf(" RX VGA2 stage 2, Q channel: %d\n\n", dc_cals.rxvga2b_q);
}
}
if (IS_CAL(CAL_DC_AUTO_RX, ops)) {
int16_t avg_i, avg_q;
status = calibrate_dc_rx(s, &dc_i, &dc_q, &avg_i, &avg_q);
if (status != 0) {
goto error;
} else {
printf(" RX DC I Setting = %d, error ~= %d\n", dc_i, avg_i);
printf(" RX DC Q Setting = %d, error ~= %d\n\n", dc_q, avg_q);
}
}
if (IS_CAL(CAL_DC_AUTO_TX, ops)) {
float error_i, error_q;
status = calibrate_dc_tx(s, &dc_i, &dc_q, &error_i, &error_q);
if (status != 0) {
goto error;
} else {
printf(" TX DC I Setting = %d, error ~= %f\n", dc_i, error_i);
printf(" TX DC Q Setting = %d, error ~= %f\n\n", dc_q, error_q);
}
}
error:
retval = status;
if (IS_RX_CAL(ops)) {
status = restore_settings(s->dev, BLADERF_MODULE_RX, &rx_settings);
retval = first_error(retval, status);
}
if (IS_TX_CAL(ops)) {
status = restore_settings(s->dev, BLADERF_MODULE_TX, &tx_settings);
retval = first_error(retval, status);
}
status = bladerf_enable_module(s->dev, BLADERF_MODULE_RX, false);
retval = first_error(retval, status);
status = bladerf_enable_module(s->dev, BLADERF_MODULE_TX, false);
retval = first_error(retval, status);
status = bladerf_set_loopback(s->dev, loopback);
retval = first_error(retval, status);
if (retval != 0) {
s->last_lib_error = retval;
retval = CLI_RET_LIBBLADERF;
}
return retval;
}
/* See libbladeRF's dc_cal_table.c for the packed table data format */
int calibrate_dc_gen_tbl(struct cli_state *s, bladerf_module module,
const char *filename, unsigned int f_low,
unsigned f_inc, unsigned int f_high)
{
int retval, status;
size_t off;
struct bladerf_lms_dc_cals lms_dc_cals;
unsigned int f;
struct settings settings;
bladerf_loopback loopback_backup;
struct bladerf_image *image = NULL;
const uint16_t magic = HOST_TO_LE16(0x1ab1);
const uint32_t reserved = HOST_TO_LE32(0x00000000);
const uint32_t tbl_version = HOST_TO_LE32(0x00000001);
const size_t lms_data_size = 10; /* 10 uint8_t register values */
const uint32_t n_frequencies = (f_high - f_low) / f_inc + 1;
const uint32_t n_frequencies_le = HOST_TO_LE32(n_frequencies);
const size_t entry_size = sizeof(uint32_t) + /* Frequency */
2 * sizeof(int16_t); /* DC I and Q valus */
const size_t table_size = n_frequencies * entry_size;
const size_t data_size = sizeof(magic) + sizeof(reserved) +
sizeof(tbl_version) + sizeof(n_frequencies_le) +
lms_data_size + table_size;
assert(data_size <= UINT_MAX);
status = backup_and_update_settings(s->dev, module, &settings);
if (status != 0) {
return status;
}
status = bladerf_get_loopback(s->dev, &loopback_backup);
if (status != 0) {
return status;
}
status = bladerf_lms_get_dc_cals(s->dev, &lms_dc_cals);
if (status != 0) {
goto out;
}
if (module == BLADERF_MODULE_RX) {
image = bladerf_alloc_image(BLADERF_IMAGE_TYPE_RX_DC_CAL,
0xffffffff, (unsigned int) data_size);
} else {
image = bladerf_alloc_image(BLADERF_IMAGE_TYPE_TX_DC_CAL,
0xffffffff, (unsigned int) data_size);
}
if (image == NULL) {
status = BLADERF_ERR_MEM;
goto out;
}
status = bladerf_get_serial(s->dev, image->serial);
if (status != 0) {
goto out;
}
if (module == BLADERF_MODULE_RX) {
status = bladerf_set_loopback(s->dev, BLADERF_LB_NONE);
if (status != 0) {
goto out;
}
}
off = 0;
memcpy(&image->data[off], &magic, sizeof(magic));
off += sizeof(magic);
memcpy(&image->data[off], &reserved, sizeof(reserved));
off += sizeof(reserved);
memcpy(&image->data[off], &tbl_version, sizeof(tbl_version));
off += sizeof(tbl_version);
memcpy(&image->data[off], &n_frequencies_le, sizeof(n_frequencies_le));
off += sizeof(n_frequencies_le);
image->data[off++] = (uint8_t)lms_dc_cals.lpf_tuning;
image->data[off++] = (uint8_t)lms_dc_cals.tx_lpf_i;
image->data[off++] = (uint8_t)lms_dc_cals.tx_lpf_q;
image->data[off++] = (uint8_t)lms_dc_cals.rx_lpf_i;
image->data[off++] = (uint8_t)lms_dc_cals.rx_lpf_q;
image->data[off++] = (uint8_t)lms_dc_cals.dc_ref;
image->data[off++] = (uint8_t)lms_dc_cals.rxvga2a_i;
image->data[off++] = (uint8_t)lms_dc_cals.rxvga2a_q;
image->data[off++] = (uint8_t)lms_dc_cals.rxvga2b_i;
image->data[off++] = (uint8_t)lms_dc_cals.rxvga2b_q;
putchar('\n');
for (f = f_low; f <= f_high; f += f_inc) {
const uint32_t frequency = HOST_TO_LE32((uint32_t)f);
int16_t dc_i, dc_q;
printf(" Calibrating @ %u Hz...", f);
status = bladerf_set_frequency(s->dev, module, f);
if (status != 0) {
goto out;
}
if (module == BLADERF_MODULE_RX) {
int16_t error_i, error_q;
status = calibrate_dc_rx(s, &dc_i, &dc_q, &error_i, &error_q);
printf(" I=%-4d (avg: %-4d), Q=%-4d (avg: %-4d)\r",
dc_i, error_i, dc_q, error_q);
} else {
float error_i, error_q;
status = calibrate_dc_tx(s, &dc_i, &dc_q, &error_i, &error_q);
printf(" I=%-4d (avg: %3.3f), Q=%-4d (avg: %3.3f)\r",
dc_i, error_i, dc_q, error_q);
}
if (status != 0) {
goto out;
}
fflush(stdout);
dc_i = HOST_TO_LE16(dc_i);
dc_q = HOST_TO_LE16(dc_q);
memcpy(&image->data[off], &frequency, sizeof(frequency));
off += sizeof(frequency);
memcpy(&image->data[off], &dc_i, sizeof(dc_i));
off += sizeof(dc_i);
memcpy(&image->data[off], &dc_q, sizeof(dc_q));
off += sizeof(dc_q);
}
status = bladerf_image_write(image, filename);
printf("\n Done.\n\n");
out:
retval = status;
if (module == BLADERF_MODULE_RX) {
status = bladerf_set_loopback(s->dev, loopback_backup);
retval = first_error(retval, status);
}
status = bladerf_enable_module(s->dev, BLADERF_MODULE_RX, false);
retval = first_error(retval, status);
status = restore_settings(s->dev, module, &settings);
retval = first_error(retval, status);
bladerf_free_image(image);
return retval;
}
int calibrate_dc_tx(struct cli_state *s,
int16_t *dc_i, int16_t *dc_q,
float *error_i, float *error_q)
{
int retval, status;
unsigned int rx_freq, tx_freq;
int16_t *rx_samples = NULL;
struct cal_tx_task tx_task;
struct point p0, p1, p2, p3;
struct point result;
status = bladerf_get_frequency(s->dev, BLADERF_MODULE_RX, &rx_freq);
if (status != 0) {
return status;
}
status = bladerf_get_frequency(s->dev, BLADERF_MODULE_TX, &tx_freq);
if (status != 0) {
return status;
}
rx_samples = (int16_t*) malloc(CAL_BUF_LEN * 2 * sizeof(rx_samples[0]));
if (rx_samples == NULL) {
return BLADERF_ERR_MEM;
}
status = init_tx_task(s, &tx_task);
if (status != 0) {
goto out;
}
status = bladerf_set_frequency(s->dev, BLADERF_MODULE_TX,
rx_freq + (CAL_SAMPLERATE / 4));
if (status != 0) {
goto out;
}
if (tx_freq < UPPER_BAND) {
status = bladerf_set_loopback(s->dev, BLADERF_LB_RF_LNA1);
} else {
status = bladerf_set_loopback(s->dev, BLADERF_LB_RF_LNA2);
}
if (status != 0) {
goto out;
}
/* Ensure old samples are flushed */
status = bladerf_enable_module(s->dev, BLADERF_MODULE_RX, false);
if (status != 0) {
goto out;
}
status = bladerf_enable_module(s->dev, BLADERF_MODULE_TX, false);
if (status != 0) {
goto out;
}
status = bladerf_sync_config(s->dev, BLADERF_MODULE_RX,
BLADERF_FORMAT_SC16_Q11,
CAL_NUM_BUFS, CAL_BUF_LEN,
CAL_NUM_XFERS, CAL_TIMEOUT);
if (status != 0) {
goto out;
}
status = bladerf_sync_config(s->dev, BLADERF_MODULE_TX,
BLADERF_FORMAT_SC16_Q11,
CAL_NUM_BUFS, CAL_BUF_LEN,
CAL_NUM_XFERS, CAL_TIMEOUT);
if (status != 0) {
goto out;
}
status = bladerf_enable_module(s->dev, BLADERF_MODULE_RX, true);
if (status != 0) {
goto out;
}
status = bladerf_enable_module(s->dev, BLADERF_MODULE_TX, true);
if (status != 0) {
goto out;
}
status = start_tx_task(&tx_task);
if (status != 0) {
goto out;
}
/* Sample the results of 4 points, which should yield 2 intersecting lines,
* for 4 different DC offset settings of the I channel */
p0.x = -2048;
p1.x = -512;
p2.x = 512;
p3.x = 2048;
status = rx_avg_magnitude(s->dev, rx_samples, (int16_t) p0.x, 0, &p0.y);
if (status != 0) {
goto out;
}
status = rx_avg_magnitude(s->dev, rx_samples, (int16_t) p1.x, 0, &p1.y);
if (status != 0) {
goto out;
}
status = rx_avg_magnitude(s->dev, rx_samples, (int16_t) p2.x, 0, &p2.y);
if (status != 0) {
goto out;
}
status = rx_avg_magnitude(s->dev, rx_samples, (int16_t) p3.x, 0, &p3.y);
if (status != 0) {
goto out;
}
status = intersection(s, &p0, &p1, &p2, &p3, &result);
if (status != 0) {
goto out;
}
if (result.x < CAL_DC_MIN || result.x > CAL_DC_MAX) {
cli_err(s, "Error", "Obtained out-of-range TX I DC cal value (%f).\n",
result.x);
status = BLADERF_ERR_UNEXPECTED;
goto out;
}
*dc_i = (int16_t) (result.x + 0.5);
*error_i = result.y;
status = set_tx_dc(s->dev, *dc_i, 0);
if (status != 0) {
goto out;
}
/* Repeat for the Q channel */
status = rx_avg_magnitude(s->dev, rx_samples, *dc_i, (int16_t) p0.x, &p0.y);
if (status != 0) {
goto out;
}
status = rx_avg_magnitude(s->dev, rx_samples, *dc_i, (int16_t) p1.x, &p1.y);
if (status != 0) {
goto out;
}
status = rx_avg_magnitude(s->dev, rx_samples, *dc_i, (int16_t) p2.x, &p2.y);
if (status != 0) {
goto out;
}
status = rx_avg_magnitude(s->dev, rx_samples, *dc_i, (int16_t) p3.x, &p3.y);
if (status != 0) {
goto out;
}
status = intersection(s, &p0, &p1, &p2, &p3, &result);
if (status != 0) {
goto out;
}
*dc_q = (int16_t) (result.x + 0.5);
*error_q = result.y;
status = set_tx_dc(s->dev, *dc_i, *dc_q);
out:
retval = status;
status = stop_tx_task(&tx_task);
retval = first_error(retval, status);
free(rx_samples);
free(tx_task.samples);
status = bladerf_enable_module(s->dev, BLADERF_MODULE_TX, false);
retval = first_error(retval, status);
/* Restore RX frequency */
status = bladerf_set_frequency(s->dev, BLADERF_MODULE_TX, tx_freq);
retval = first_error(retval, status);
return retval;
}
static int run(struct bladerf *dev, struct app_params *p,
int16_t *samples, const struct test_case *t)
{
int status, status_out;
struct bladerf_metadata meta;
uint64_t timestamp;
unsigned int gap;
uint32_t counter;
uint64_t tscount_diff;
unsigned int i;
bool suppress_overrun_msg = false;
unsigned int overruns = 0;
bool prev_iter_overrun = false;
/* Clear out metadata and request that we just received any available
* samples, with the timestamp filled in for us */
memset(&meta, 0, sizeof(meta));
meta.flags = BLADERF_META_FLAG_RX_NOW;
status = enable_counter_mode(dev, true);
if (status != 0) {
goto out;
}
status = perform_sync_init(dev, BLADERF_MODULE_RX, 0, p);
if (status != 0) {
goto out;
}
/* Initial read to get a starting timestamp, and counter value */
gap = get_gap(p, t);
status = bladerf_sync_rx(dev, samples, gap, &meta, p->timeout_ms);
if (status != 0) {
fprintf(stderr, "Intial RX failed: %s\n", bladerf_strerror(status));
goto out;
}
counter = extract_counter_val((uint8_t*) samples);
timestamp = meta.timestamp;
assert(timestamp >= (uint64_t) counter);
tscount_diff = timestamp - (uint64_t) counter;
if (t->gap != 0) {
printf("\nTest Case: Read size=%"PRIu64" samples, %u iterations\n",
t->gap, t->iterations);
} else {
printf("\nTest Case: Random read size, %u iterations\n", t->iterations);
}
printf("--------------------------------------------------------\n");
assert((timestamp - tscount_diff) <= UINT32_MAX);
status = check_data(samples, &meta, UINT64_MAX,
(uint32_t) (timestamp - tscount_diff),
meta.actual_count, &suppress_overrun_msg);
if (status == DETECTED_OVERRUN) {
overruns++;
status = 0;
}
printf("Timestamp-counter diff: %"PRIu64"\n", tscount_diff);
printf("Initial timestamp: 0x%016"PRIx64"\n", meta.timestamp);
printf("Intital counter value: 0x%08"PRIx32"\n", counter);
printf("Initial status: 0x%08"PRIu32"\n", meta.status);
for (i = 0; i < t->iterations && status == 0; i++) {
timestamp = meta.timestamp + gap;
gap = get_gap(p, t);
status = bladerf_sync_rx(dev, samples, gap, &meta, p->timeout_ms);
if (status != 0) {
fprintf(stderr, "RX %u failed: %s\n", i, bladerf_strerror(status));
goto out;
}
/* If an overrun occured on the previous iteration, we don't know what
* the timestamp will actually be on this iteration. */
if (prev_iter_overrun) {
timestamp = meta.timestamp;
}
status = check_data(samples, &meta, timestamp,
(uint32_t) (timestamp - tscount_diff),
gap, &suppress_overrun_msg);
if (status == DETECTED_OVERRUN) {
overruns++;
status = 0;
prev_iter_overrun = true;
}
}
if (status != 0) {
printf("Test failed due to errors.\n");
} else if (overruns != 0) {
printf("Test failed due to %u overruns.\n", overruns);
status = -1;
} else {
printf("Test passed.\n");
}
out:
status_out = bladerf_enable_module(dev, BLADERF_MODULE_RX, false);
if (status_out != 0) {
fprintf(stderr, "Failed to disable RX module: %s\n",
bladerf_strerror(status));
}
status = first_error(status, status_out);
status_out = enable_counter_mode(dev, false);
status = first_error(status, status_out);
return status;
}
/* See libbladeRF's dc_cal_table.c for the packed table data format */
int calibrate_dc_gen_tbl(struct cli_state *s, bladerf_module module,
const char *filename, unsigned int f_low,
unsigned f_inc, unsigned int f_high)
{
int retval, status;
size_t off;
struct bladerf_lms_dc_cals lms_dc_cals;
unsigned int f;
struct settings settings;
bladerf_loopback loopback_backup;
struct bladerf_image *image = NULL;
FILE *write_check;
const uint16_t magic = HOST_TO_LE16(0x1ab1);
const uint32_t reserved = HOST_TO_LE32(0x00000000);
const uint32_t tbl_version = HOST_TO_LE32(0x00000001);
const size_t lms_data_size = 10; /* 10 uint8_t register values */
const uint32_t n_frequencies = (f_high - f_low) / f_inc + 1;
const uint32_t n_frequencies_le = HOST_TO_LE32(n_frequencies);
const size_t entry_size = sizeof(uint32_t) + /* Frequency */
2 * sizeof(int16_t); /* DC I and Q valus */
const size_t table_size = n_frequencies * entry_size;
const size_t data_size = sizeof(magic) + sizeof(reserved) +
sizeof(tbl_version) + sizeof(n_frequencies_le) +
lms_data_size + table_size;
assert(data_size <= UINT_MAX);
/* This operation may take a bit of time, so let's make sure we
* actually have write access before kicking things off. Note that
* access is checked later when the file is actually written.
*/
write_check = fopen(filename, "wb");
if (write_check == NULL) {
if (errno == EACCES) {
return BLADERF_ERR_PERMISSION;
} else {
return BLADERF_ERR_IO;
}
} else {
fclose(write_check);
/* Not much we care to do if this fails. Throw away the return value
* to make this explicit to our static analysis tools */
(void) remove(filename);
}
status = backup_and_update_settings(s->dev, module, &settings);
if (status != 0) {
return status;
}
status = bladerf_get_loopback(s->dev, &loopback_backup);
if (status != 0) {
return status;
}
status = bladerf_lms_get_dc_cals(s->dev, &lms_dc_cals);
if (status != 0) {
goto out;
}
if (module == BLADERF_MODULE_RX) {
image = bladerf_alloc_image(BLADERF_IMAGE_TYPE_RX_DC_CAL,
0xffffffff, (unsigned int) data_size);
} else {
image = bladerf_alloc_image(BLADERF_IMAGE_TYPE_TX_DC_CAL,
0xffffffff, (unsigned int) data_size);
}
if (image == NULL) {
status = BLADERF_ERR_MEM;
goto out;
}
status = bladerf_get_serial(s->dev, image->serial);
if (status != 0) {
goto out;
}
if (module == BLADERF_MODULE_RX) {
status = bladerf_set_loopback(s->dev, BLADERF_LB_NONE);
if (status != 0) {
goto out;
}
}
off = 0;
memcpy(&image->data[off], &magic, sizeof(magic));
off += sizeof(magic);
memcpy(&image->data[off], &reserved, sizeof(reserved));
off += sizeof(reserved);
memcpy(&image->data[off], &tbl_version, sizeof(tbl_version));
off += sizeof(tbl_version);
memcpy(&image->data[off], &n_frequencies_le, sizeof(n_frequencies_le));
off += sizeof(n_frequencies_le);
image->data[off++] = (uint8_t)lms_dc_cals.lpf_tuning;
image->data[off++] = (uint8_t)lms_dc_cals.tx_lpf_i;
image->data[off++] = (uint8_t)lms_dc_cals.tx_lpf_q;
image->data[off++] = (uint8_t)lms_dc_cals.rx_lpf_i;
image->data[off++] = (uint8_t)lms_dc_cals.rx_lpf_q;
image->data[off++] = (uint8_t)lms_dc_cals.dc_ref;
image->data[off++] = (uint8_t)lms_dc_cals.rxvga2a_i;
image->data[off++] = (uint8_t)lms_dc_cals.rxvga2a_q;
image->data[off++] = (uint8_t)lms_dc_cals.rxvga2b_i;
image->data[off++] = (uint8_t)lms_dc_cals.rxvga2b_q;
putchar('\n');
for (f = f_low; f <= f_high; f += f_inc) {
const uint32_t frequency = HOST_TO_LE32((uint32_t)f);
int16_t dc_i, dc_q;
printf(" Calibrating @ %u Hz...", f);
status = bladerf_set_frequency(s->dev, module, f);
if (status != 0) {
goto out;
}
if (module == BLADERF_MODULE_RX) {
int16_t error_i, error_q;
status = calibrate_dc_rx(s, &dc_i, &dc_q, &error_i, &error_q);
printf(" I=%-4d (avg: %-4d), Q=%-4d (avg: %-4d)\r",
dc_i, error_i, dc_q, error_q);
} else {
float error_i, error_q;
status = calibrate_dc_tx(s, &dc_i, &dc_q, &error_i, &error_q);
printf(" I=%-4d (avg: %3.3f), Q=%-4d (avg: %3.3f)\r",
dc_i, error_i, dc_q, error_q);
}
if (status != 0) {
goto out;
}
fflush(stdout);
dc_i = HOST_TO_LE16(dc_i);
dc_q = HOST_TO_LE16(dc_q);
memcpy(&image->data[off], &frequency, sizeof(frequency));
off += sizeof(frequency);
memcpy(&image->data[off], &dc_i, sizeof(dc_i));
off += sizeof(dc_i);
memcpy(&image->data[off], &dc_q, sizeof(dc_q));
off += sizeof(dc_q);
}
status = bladerf_image_write(image, filename);
printf("\n Done.\n\n");
out:
retval = status;
if (module == BLADERF_MODULE_RX) {
status = bladerf_set_loopback(s->dev, loopback_backup);
retval = first_error(retval, status);
}
status = bladerf_enable_module(s->dev, BLADERF_MODULE_RX, false);
retval = first_error(retval, status);
status = restore_settings(s->dev, module, &settings);
retval = first_error(retval, status);
bladerf_free_image(image);
return retval;
}
static int run(struct bladerf *dev, struct app_params *p,
const struct test_case *t)
{
int status, status_out, status_wait;
unsigned int samples_left;
size_t i;
struct bladerf_metadata meta;
int16_t *samples, *buf;
samples = calloc(2 * sizeof(int16_t), t->burst_len + 2);
if (samples == NULL) {
perror("malloc");
return BLADERF_ERR_MEM;
}
/* Leave the last two samples zero */
for (i = 0; i < (2 * t->burst_len); i += 2) {
samples[i] = samples[i + 1] = MAGNITUDE;
}
memset(&meta, 0, sizeof(meta));
status = perform_sync_init(dev, BLADERF_MODULE_TX, t->buf_len, p);
if (status != 0) {
goto out;
}
status = bladerf_get_timestamp(dev, BLADERF_MODULE_TX, &meta.timestamp);
if (status != 0) {
fprintf(stderr, "Failed to get timestamp: %s\n",
bladerf_strerror(status));
goto out;
} else {
printf("Initial timestamp: 0x%016"PRIx64"\n", meta.timestamp);
}
meta.timestamp += 200000;
for (i = 0; i < t->iterations && status == 0; i++) {
meta.flags = BLADERF_META_FLAG_TX_BURST_START;
samples_left = t->burst_len + 2;
buf = samples;
printf("Sending burst @ %llu\n", (unsigned long long) meta.timestamp);
while (samples_left && status == 0) {
unsigned int to_send = uint_min(p->buf_size, samples_left);
if (to_send == samples_left) {
meta.flags |= BLADERF_META_FLAG_TX_BURST_END;
} else {
meta.flags &= ~BLADERF_META_FLAG_TX_BURST_END;
}
status = bladerf_sync_tx(dev, buf, to_send, &meta, 10000); //p->timeout_ms);
if (status != 0) {
fprintf(stderr, "TX failed @ iteration (%u) %s\n",
(unsigned int )i, bladerf_strerror(status));
}
meta.flags &= ~BLADERF_META_FLAG_TX_BURST_START;
samples_left -= to_send;
buf += 2 * to_send;
}
meta.timestamp += (t->burst_len + t->gap_len - 2);
}
printf("Waiting for samples to finish...\n");
fflush(stdout);
/* Wait for samples to be transmitted before shutting down the TX module */
status_wait = wait_for_timestamp(dev, BLADERF_MODULE_TX,
meta.timestamp - t->gap_len + 2,
3000);
if (status_wait != 0) {
status = first_error(status, status_wait);
fprintf(stderr, "Failed to wait for TX to finish: %s\n",
bladerf_strerror(status_wait));
}
out:
status_out = bladerf_enable_module(dev, BLADERF_MODULE_TX, false);
if (status_out != 0) {
fprintf(stderr, "Failed to disable TX module: %s\n",
bladerf_strerror(status));
} else {
printf("Done waiting.\n");
fflush(stdout);
}
status = first_error(status, status_out);
free(samples);
return status;
}
