bool uhd_device::recv_async_msg()
{
uhd::async_metadata_t metadata;
if (!usrp_dev->get_device()->recv_async_msg(metadata))
return false;
// Assume that any error requires resynchronization
if (metadata.event_code != uhd::async_metadata_t::EVENT_CODE_BURST_ACK) {
aligned = false;
LOG(ERR) << str_code(metadata);
}
return true;
}
bool uhd_device::recv_async_msg()
{
uhd::async_metadata_t md;
if (!usrp_dev->get_device()->recv_async_msg(md))
return false;
// Assume that any error requires resynchronization
if (md.event_code != uhd::async_metadata_t::EVENT_CODE_BURST_ACK) {
aligned = false;
if ((md.event_code != uhd::async_metadata_t::EVENT_CODE_UNDERFLOW) &&
(md.event_code != uhd::async_metadata_t::EVENT_CODE_TIME_ERROR)) {
LOG(ERR) << str_code(md);
}
}
return true;
}
int uhd_device::check_rx_md_err(uhd::rx_metadata_t &md, ssize_t num_smpls)
{
uhd::time_spec_t ts;
if (!num_smpls) {
LOG(ERR) << str_code(md);
switch (md.error_code) {
case uhd::rx_metadata_t::ERROR_CODE_TIMEOUT:
LOG(ALERT) << "UHD: Receive timed out";
return ERROR_UNRECOVERABLE;
case uhd::rx_metadata_t::ERROR_CODE_OVERFLOW:
case uhd::rx_metadata_t::ERROR_CODE_LATE_COMMAND:
case uhd::rx_metadata_t::ERROR_CODE_BROKEN_CHAIN:
case uhd::rx_metadata_t::ERROR_CODE_BAD_PACKET:
default:
return ERROR_UNHANDLED;
}
}
// Missing timestamp
if (!md.has_time_spec) {
LOG(ALERT) << "UHD: Received packet missing timestamp";
return ERROR_UNRECOVERABLE;
}
ts = md.time_spec;
// Monotonicity check
if (ts < prev_ts) {
LOG(ALERT) << "UHD: Loss of monotonic time";
LOG(ALERT) << "Current time: " << ts.get_real_secs() << ", "
<< "Previous time: " << prev_ts.get_real_secs();
return ERROR_TIMING;
} else {
prev_ts = ts;
}
return 0;
}
bool UHDDevice::recv_async_msg()
{
uhd::async_metadata_t md;
thread_enable_cancel(false);
bool rc = tx_stream->recv_async_msg(md, 0.1);
thread_enable_cancel(true);
if (!rc)
return false;
/* Assume that any error requires resynchronization */
if (md.event_code != uhd::async_metadata_t::EVENT_CODE_BURST_ACK) {
aligned = false;
if ((md.event_code != uhd::async_metadata_t::EVENT_CODE_UNDERFLOW) &&
(md.event_code != uhd::async_metadata_t::EVENT_CODE_TIME_ERROR)) {
LOG(ERR) << str_code(md);
}
}
return true;
}
