Hi, I am trying to capture USB 2.0 packets sent over by the USRP in a C++ program. I was able to found a code that does the similar job in Linux:
#include "usrp_standard.h" // Dumy Function to process USRP data void process_data(int *buffer) { } #define SAMPELS_PER_READ (512) // Must be a multiple of 128 int main (int argc, char **argv) { bool loopback_p = false; bool counting_p = false; bool width_8_p = false; int which_board = 0; int decim = 8; // 32 MB/sec double center_freq = 0; int fusb_block_size = 0; int fusb_nblocks = 0; int nchannels = 1; int gain = 0; int mode = 0; int noverruns = 0; bool overrun; int total_reads = 10000; int i; int buf[SAMPELS_PER_READ]; int bufsize = SAMPELS_PER_READ*4; if (loopback_p) mode |= usrp_standard_rx::FPGA_MODE_LOOPBACK; if (counting_p) mode |= usrp_standard_rx::FPGA_MODE_COUNTING; usrp_standard_rx *urx = usrp_standard_rx::make (which_board, decim, 1, -1, mode, fusb_block_size, fusb_nblocks); if (urx == 0) { fprintf (stderr, "Error: usrp_standard_rx::make\n"); exit (1); } if (width_8_p) { int width = 8; int shift = 8; bool want_q = true; if (!urx->set_format(usrp_standard_rx::make_format(width, shift, want_q))) { fprintf (stderr, "Error: urx->set_format\n"); exit (1); } } // Set DDC center frequency urx->set_rx_freq (0, center_freq); // Set Number of channels urx->set_nchannels(1); // Set ADC PGA gain urx->set_pga(0,gain); // Set FPGA Mux urx->set_mux(0x32103210); // Board A only // Set DDC decimation rate urx->set_decim_rate(decim); // Set DDC phase urx->set_ddc_phase(0,0); urx->start(); // Start data transfer printf("USRP Transfer Started\n"); // Do USRP Samples Reading for (i = 0; i < total_reads; i++) { urx->read(&buf, bufsize, &overrun); if (overrun) { printf ("USRP Rx Overrun\n"); noverruns++; } // Do whatever you want with the data process_data(&buf[0]); } urx->stop(); // Stop data transfer printf("USRP Transfer Stoped\n"); delete urx; return 0; } I was able to successfully achieve my goal through this code in Linux. However, I need to implement the same task in Windows. I was initially suggested to look for usrp_standard.h but I have no idea how to write a code (like the one above) which will incorporate this header file and be able to do the actual communication. Please provide me with some guidelines in this regard. Thanks. Ujala
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