diff options
Diffstat (limited to 'host/lib/usrp/usrp1/io_impl.cpp')
| -rw-r--r-- | host/lib/usrp/usrp1/io_impl.cpp | 36 |
1 files changed, 32 insertions, 4 deletions
diff --git a/host/lib/usrp/usrp1/io_impl.cpp b/host/lib/usrp/usrp1/io_impl.cpp index b5d4970c4..9fa1b4f72 100644 --- a/host/lib/usrp/usrp1/io_impl.cpp +++ b/host/lib/usrp/usrp1/io_impl.cpp @@ -91,6 +91,7 @@ struct usrp1_impl::io_impl{ void commit_send_buff(offset_send_buffer::sptr, offset_send_buffer::sptr, size_t); void flush_send_buff(void); bool get_send_buffs(vrt_packet_handler::managed_send_buffs_t &, double); + bool transmitting_enb; }; /*! @@ -183,6 +184,28 @@ void usrp1_impl::io_init(void){ _tx_otw_type.byteorder = otw_type_t::BO_LITTLE_ENDIAN; _io_impl = UHD_PIMPL_MAKE(io_impl, (_data_transport)); + + _soft_time_ctrl = soft_time_ctrl::make( + boost::bind(&usrp1_impl::rx_stream_on_off, this, _1) + ); + + rx_stream_on_off(false); + tx_stream_on_off(false); +} + +void usrp1_impl::rx_stream_on_off(bool enb){ + return _iface->write_firmware_cmd(VRQ_FPGA_SET_RX_ENABLE, enb, 0, 0, 0); + //drain any junk in the receive transport after stop streaming command + while(not enb and _data_transport->get_recv_buff().get() != NULL){ + /* NOP */ + } +} + +void usrp1_impl::tx_stream_on_off(bool enb){ + if (not enb) _io_impl->flush_send_buff(); + _codec_ctrls[DBOARD_SLOT_A]->enable_tx_digital(enb); + _codec_ctrls[DBOARD_SLOT_B]->enable_tx_digital(enb); + _io_impl->transmitting_enb = enb; } /*********************************************************************** @@ -208,7 +231,9 @@ size_t usrp1_impl::send( const tx_metadata_t &metadata, const io_type_t &io_type, send_mode_t send_mode, double timeout ){ - _soft_time_ctrl->send_pre(metadata, timeout); + if (_soft_time_ctrl->send_pre(metadata, timeout)) return num_samps; + if (not _io_impl->transmitting_enb) tx_stream_on_off(true); + size_t num_samps_sent = vrt_packet_handler::send( _io_impl->packet_handler_send_state, //last state of the send handler buffs, num_samps, //buffer to fill @@ -222,9 +247,11 @@ size_t usrp1_impl::send( _tx_subdev_spec.size() //num channels ); - //Don't honor sob because it is normal to be always bursting... - //handle eob flag (commit the buffer) - if (metadata.end_of_burst) _io_impl->flush_send_buff(); + //handle eob flag (commit the buffer, disable the DACs) + //check num samps sent to avoid flush on incomplete/timeout + if (metadata.end_of_burst and num_samps_sent == num_samps){ + this->tx_stream_on_off(false); + } //handle the polling for underflow conditions _io_impl->underflow_poll_samp_count += num_samps_sent; @@ -295,6 +322,7 @@ size_t usrp1_impl::recv( 0, //vrt header offset _rx_subdev_spec.size() //num channels ); + _soft_time_ctrl->recv_post(metadata, num_samps_recvd); //handle the polling for overflow conditions |