diff options
Diffstat (limited to 'host/lib/usrp/usrp2')
| -rw-r--r-- | host/lib/usrp/usrp2/io_impl.cpp | 40 | ||||
| -rw-r--r-- | host/lib/usrp/usrp2/usrp2_impl.hpp | 1 |
2 files changed, 36 insertions, 5 deletions
diff --git a/host/lib/usrp/usrp2/io_impl.cpp b/host/lib/usrp/usrp2/io_impl.cpp index 1947fdf00..455a30b47 100644 --- a/host/lib/usrp/usrp2/io_impl.cpp +++ b/host/lib/usrp/usrp2/io_impl.cpp @@ -44,7 +44,8 @@ struct usrp2_impl::io_impl{ io_impl(size_t num_frames, size_t width): packet_handler_recv_state(width), - recv_pirate_booty(alignment_buffer_type::make(num_frames, width)) + recv_pirate_booty(alignment_buffer_type::make(num_frames, width)), + async_msg_fifo(bounded_buffer<async_metadata_t>::make(100/*messages deep*/)) { /* NOP */ } @@ -69,6 +70,7 @@ struct usrp2_impl::io_impl{ boost::thread_group recv_pirate_crew; bool recv_pirate_crew_raiding; alignment_buffer_type::sptr recv_pirate_booty; + bounded_buffer<async_metadata_t>::sptr async_msg_fifo; size_t recv_timeout_ms; }; @@ -94,18 +96,34 @@ void usrp2_impl::io_impl::recv_pirate_loop( //extract the vrt header packet info vrt::if_packet_info_t if_packet_info; if_packet_info.num_packet_words32 = buff->size()/sizeof(boost::uint32_t); - vrt::if_hdr_unpack_be(buff->cast<const boost::uint32_t *>(), if_packet_info); + const boost::uint32_t *vrt_hdr = buff->cast<const boost::uint32_t *>(); + vrt::if_hdr_unpack_be(vrt_hdr, if_packet_info); - //handle a tx async report message (TODO forward info) + //handle a tx async report message if (if_packet_info.sid == 1 and if_packet_info.packet_type != vrt::if_packet_info_t::PACKET_TYPE_DATA){ - std::cerr << "U"; + const boost::uint32_t *vrt_data = vrt_hdr + if_packet_info.num_header_words32; + //extract the context word (we dont know the endianness so mirror the bytes) + boost::uint32_t word0 = vrt_data[0] | uhd::byteswap(vrt_data[0]); + + //fill in the async metadata + async_metadata_t metadata; + metadata.channel = index; + metadata.has_time_spec = if_packet_info.has_tsi and if_packet_info.has_tsf; + metadata.time_spec = time_spec_t( + time_t(if_packet_info.tsi), size_t(if_packet_info.tsf), mboard->get_master_clock_freq() + ); + metadata.event_code = uhd::async_metadata_t::event_code_t(word0 & 0xf); + + //print the famous U, and push the metadata into the message queue + if (metadata.event_code == async_metadata_t::EVENT_CODE_UNDERFLOW) std::cerr << "U"; + async_msg_fifo->push_with_pop_on_full(metadata); continue; } //handle the packet count / sequence number if (if_packet_info.packet_count != next_packet_seq){ //std::cerr << "S" << (if_packet_info.packet_count - next_packet_seq)%16; - std::cerr << "O"; //report overrun (drops in the kernel) + std::cerr << "O"; //report overflow (drops in the kernel) } next_packet_seq = (if_packet_info.packet_count+1)%16; @@ -157,6 +175,18 @@ void usrp2_impl::io_init(void){ } /*********************************************************************** + * Async Data + **********************************************************************/ +bool usrp2_impl::recv_async_msg( + async_metadata_t &async_metadata, size_t timeout_ms +){ + boost::this_thread::disable_interruption di; //disable because the wait can throw + return _io_impl->async_msg_fifo->pop_with_timed_wait( + async_metadata, boost::posix_time::milliseconds(timeout_ms) + ); +} + +/*********************************************************************** * Send Data **********************************************************************/ bool get_send_buffs( diff --git a/host/lib/usrp/usrp2/usrp2_impl.hpp b/host/lib/usrp/usrp2/usrp2_impl.hpp index cae1b21d6..2eaf12350 100644 --- a/host/lib/usrp/usrp2/usrp2_impl.hpp +++ b/host/lib/usrp/usrp2/usrp2_impl.hpp @@ -235,6 +235,7 @@ public: uhd::rx_metadata_t &, const uhd::io_type_t &, uhd::device::recv_mode_t, size_t ); + bool recv_async_msg(uhd::async_metadata_t &, size_t); private: //device properties interface |