diff options
| -rw-r--r-- | host/lib/transport/libusb1_zero_copy.cpp | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/host/lib/transport/libusb1_zero_copy.cpp b/host/lib/transport/libusb1_zero_copy.cpp index c13384eec..28bff9709 100644 --- a/host/lib/transport/libusb1_zero_copy.cpp +++ b/host/lib/transport/libusb1_zero_copy.cpp @@ -1,5 +1,5 @@ // -// Copyright 2010-2011 Ettus Research LLC +// Copyright 2010-2012 Ettus Research LLC // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by @@ -177,6 +177,23 @@ public: _handle->claim_interface(recv_interface); _handle->claim_interface(send_interface); + //flush the buffers out of the recv endpoint + //limit the flushing to at most one second + for (size_t i = 0; i < 100; i++) + { + unsigned char buff[512]; + int transfered = 0; + const int status = libusb_bulk_transfer( + _handle->get(), // dev_handle + (recv_endpoint & 0x7f) | 0x80, // endpoint + static_cast<unsigned char *>(buff), + sizeof(buff), + &transfered, //bytes xfered + 10 //timeout ms + ); + if (status == LIBUSB_ERROR_TIMEOUT) break; + } + //allocate libusb transfer structs and managed receive buffers for (size_t i = 0; i < get_num_recv_frames(); i++){ |