// LOG_D(PHY,"usrp_tx_write: tx_count %llu SoB %d, EoB %d, TS %llu\n",(unsigned long long)s->tx_count,s->tx_md.start_of_burst,s->tx_md.end_of_burst,(unsigned long long)timestamp);
LOG_D(PHY,"usrp_tx_write: tx_count %llu SoB %d, EoB %d, TS %llu\n",(unsignedlonglong)s->tx_count,s->tx_md.start_of_burst,s->tx_md.end_of_burst,(unsignedlonglong)timestamp);
s->tx_count++;
// bit 3 enables gpio (for backward compatibility)