static int linux_rx(struct bladerf *dev, bladerf_format format, void *samples, int n, struct bladerf_metadata *metadata) { ssize_t i, ret = 0; size_t bytes_read = 0; const size_t bytes_total = c16_samples_to_bytes(n); struct bladerf_linux *backend = (struct bladerf_linux *)dev->backend; int8_t *samples8 = (int8_t *)samples; while (bytes_read < bytes_total) { i = read(backend->fd, samples8 + bytes_read, bytes_total - bytes_read); if (i < 0 && errno != EINTR) { int errno_val = errno; bladerf_set_error(&dev->error, ETYPE_ERRNO, errno_val); ret = BLADERF_ERR_IO; log_error("Read failed with errno=%d: %s\n", errno_val, strerror(errno_val)); break; } else if (i > 0) { bytes_read += i; } } if (ret < 0) { return ret; } else { return bytes_to_c16_samples(bytes_read); } }
int bladerf_open_with_devinfo(struct bladerf **device, struct bladerf_devinfo *devinfo) { struct bladerf *opened_device; int status; *device = NULL; status = backend_open(device, devinfo); if (!status) { /* Catch bugs from backends returning status = 0, but a NULL device */ assert(*device); opened_device = *device; /* We got a device */ bladerf_set_error(&opened_device->error, ETYPE_LIBBLADERF, 0); status = opened_device->fn->get_device_speed(opened_device, &opened_device->usb_speed); if (status < 0 || (opened_device->usb_speed != BLADERF_DEVICE_SPEED_HIGH && opened_device->usb_speed != BLADERF_DEVICE_SPEED_SUPER)) { opened_device->fn->close((*device)); *device = NULL; } else { if (opened_device->legacy) { /* Currently two modes of legacy: * - ALT_SETTING * - CONFIG_IF * * If either of these are set, we should tell the user to update */ printf("********************************************************************************\n"); printf("* ENTERING LEGACY MODE, PLEASE UPGRADE TO THE LATEST FIRMWARE BY RUNNING:\n"); printf("* wget http://nuand.com/fx3/latest.img ; bladeRF-cli -f latest.img\n"); printf("********************************************************************************\n"); } if (!(opened_device->legacy & LEGACY_ALT_SETTING)) { status = bladerf_get_and_cache_vctcxo_trim(opened_device); if (status < 0) { log_warning( "Could not extract VCTCXO trim value\n" ) ; } status = bladerf_get_and_cache_fpga_size(opened_device); if (status < 0) { log_warning( "Could not extract FPGA size\n" ) ; } /* If any of these routines failed, the dev structure should * still have had it's fields dummied, so they're safe to * print here (i.e., not uninitialized) */ log_debug("%s: fw=v%s serial=%s trim=0x%.4x fpga_size=%d\n", __FUNCTION__, opened_device->fw_version.describe, opened_device->ident.serial, opened_device->dac_trim, opened_device->fpga_size); } /* All status in here is not fatal, so whatever */ status = 0 ; if (bladerf_is_fpga_configured(opened_device)) { bladerf_init_device(opened_device); } } } return status; }