/* 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;
}
/* 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;
}