diff options
| -rw-r--r-- | host/lib/usrp/cores/rx_vita_core_3000.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/host/lib/usrp/cores/rx_vita_core_3000.cpp b/host/lib/usrp/cores/rx_vita_core_3000.cpp index f61da7cc3..52121837e 100644 --- a/host/lib/usrp/cores/rx_vita_core_3000.cpp +++ b/host/lib/usrp/cores/rx_vita_core_3000.cpp @@ -20,6 +20,8 @@ #include <uhd/utils/safe_call.hpp> #include <boost/assign/list_of.hpp> #include <boost/tuple/tuple.hpp> +#include <boost/date_time.hpp> +#include <boost/thread.hpp> #define REG_FRAMER_MAXLEN _base + 4*4 + 0 #define REG_FRAMER_SID _base + 4*4 + 4 @@ -63,6 +65,17 @@ struct rx_vita_core_3000_impl : rx_vita_core_3000 void configure_flow_control(const size_t window_size) { + // The window needs to be disabled in the case where this object is + // uncleanly destroyed and the FC window is left enabled + _iface->poke32(REG_FC_ENABLE, 0); + + // Sleep for a large amount of time to allow the source flow control + // module in the FPGA to flush all the packets buffered upstream. + // At 1 ms * 200 MHz = 200k cycles, 8 bytes * 200k cycles = 1.6 MB + // of flushed data, when the typical amount of data buffered + // is on the order of kilobytes + boost::this_thread::sleep(boost::posix_time::milliseconds(1.0)); + _iface->poke32(REG_FC_WINDOW, window_size-1); _iface->poke32(REG_FC_ENABLE, window_size?1:0); } |