From a7c230cb1f97b452da027d5baa71891f2066d430 Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Wed, 28 Apr 2010 16:35:22 -0700 Subject: Added reload flag to the stream cmd. This reloads the last command to handle continuous streaming in hardware. Moved rx control register setup and stream command issuing to the host. --- host/lib/usrp/usrp2/io_impl.cpp | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) (limited to 'host/lib/usrp/usrp2/io_impl.cpp') diff --git a/host/lib/usrp/usrp2/io_impl.cpp b/host/lib/usrp/usrp2/io_impl.cpp index 367a1d9fb..a2e99c824 100644 --- a/host/lib/usrp/usrp2/io_impl.cpp +++ b/host/lib/usrp/usrp2/io_impl.cpp @@ -16,6 +16,7 @@ // #include "usrp2_impl.hpp" +#include "usrp2_regs.hpp" #include #include #include //htonl and ntohl @@ -39,14 +40,23 @@ void usrp2_impl::io_init(void){ _rx_copy_buff = asio::buffer("", 0); //send a small data packet so the usrp2 knows the udp source port - //and the maximum number of lines (32 bit words) per packet managed_send_buffer::sptr send_buff = _data_transport->get_send_buff(); - boost::uint32_t data[2] = { - htonl(USRP2_INVALID_VRT_HEADER), - htonl(_max_rx_samples_per_packet) - }; - memcpy(send_buff->cast(), data, sizeof(data)); + boost::uint32_t data = htonl(USRP2_INVALID_VRT_HEADER); + memcpy(send_buff->cast(), &data, sizeof(data)); send_buff->done(sizeof(data)); + + //setup RX DSP regs + _iface->poke32(FR_RX_CTRL_NSAMPS_PER_PKT, _max_rx_samples_per_packet); + _iface->poke32(FR_RX_CTRL_NCHANNELS, 1); + _iface->poke32(FR_RX_CTRL_CLEAR_OVERRUN, 1); //reset + _iface->poke32(FR_RX_CTRL_VRT_HEADER, 0 + | (0x1 << 28) //if data with stream id + | (0x1 << 26) //has trailer + | (0x3 << 22) //integer time other + | (0x1 << 20) //fractional time sample count + ); + _iface->poke32(FR_RX_CTRL_VRT_STREAM_ID, 0); + _iface->poke32(FR_RX_CTRL_VRT_TRAILER, 0); } /*********************************************************************** -- cgit v1.2.3