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@ -204,96 +204,105 @@ float rf_uhd_get_rssi(void *h) {
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int rf_uhd_open(char *args, void **h)
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int rf_uhd_open(char *args, void **h)
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{
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{
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*h = NULL;
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if (h) {
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*h = NULL;
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rf_uhd_handler_t *handler = (rf_uhd_handler_t*) malloc(sizeof(rf_uhd_handler_t));
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rf_uhd_handler_t *handler = (rf_uhd_handler_t*) malloc(sizeof(rf_uhd_handler_t));
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if (!handler) {
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if (!handler) {
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perror("malloc");
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perror("malloc");
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return -1;
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return -1;
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}
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}
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*h = handler;
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*h = handler;
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/* Set priority to UHD threads */
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/* Set priority to UHD threads */
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uhd_set_thread_priority(uhd_default_thread_priority, true);
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uhd_set_thread_priority(uhd_default_thread_priority, true);
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/* Set correct options for the USRP device */
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/* Set correct options for the USRP device */
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uhd_string_vector_handle devices_str;
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uhd_string_vector_handle devices_str;
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uhd_string_vector_make(&devices_str);
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uhd_string_vector_make(&devices_str);
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uhd_usrp_find("", &devices_str);
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uhd_usrp_find("", &devices_str);
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/* If device type or name not given in args, choose a B200 */
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// Allow NULL parameter
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if (args[0]=='\0') {
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if (args == NULL) {
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// If B200 is available, use it
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args = "";
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if (find_string(devices_str, "type=b200") && !strstr(args, "recv_frame_size")) {
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args = "type=b200,recv_frame_size=9232,num_recv_frames=64,send_frame_size=9232,num_send_frames=64";
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}
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}
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}
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/* Create UHD handler */
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/* If device type or name not given in args, choose a B200 */
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printf("Opening USRP with args: %s\n", args);
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if (args[0]=='\0') {
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uhd_error error = uhd_usrp_make(&handler->usrp, args);
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// If B200 is available, use it
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if (error) {
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if (find_string(devices_str, "type=b200") && !strstr(args, "recv_frame_size")) {
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fprintf(stderr, "Error opening UHD: code %d\n", error);
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args = "type=b200,recv_frame_size=9232,num_recv_frames=64,send_frame_size=9232,num_send_frames=64";
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return -1;
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}
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}
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}
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size_t channel = 0;
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/* Create UHD handler */
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uhd_stream_args_t stream_args = {
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printf("Opening USRP with args: %s\n", args);
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.cpu_format = "fc32",
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uhd_error error = uhd_usrp_make(&handler->usrp, args);
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.otw_format = "sc16",
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if (error) {
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.args = "",
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fprintf(stderr, "Error opening UHD: code %d\n", error);
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.channel_list = &channel,
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return -1;
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.n_channels = 1
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}
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};
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/* Initialize rx and tx stremers */
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uhd_rx_streamer_make(&handler->rx_stream);
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error = uhd_usrp_get_rx_stream(handler->usrp, &stream_args, handler->rx_stream);
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if (error) {
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fprintf(stderr, "Error opening RX stream: %d\n", error);
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return -1;
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}
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uhd_tx_streamer_make(&handler->tx_stream);
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error = uhd_usrp_get_tx_stream(handler->usrp, &stream_args, handler->tx_stream);
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if (error) {
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fprintf(stderr, "Error opening TX stream: %d\n", error);
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return -1;
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}
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uhd_rx_streamer_max_num_samps(handler->rx_stream, &handler->rx_nof_samples);
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size_t channel = 0;
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uhd_tx_streamer_max_num_samps(handler->tx_stream, &handler->tx_nof_samples);
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uhd_stream_args_t stream_args = {
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.cpu_format = "fc32",
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uhd_meta_range_make(&handler->rx_gain_range);
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.otw_format = "sc16",
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uhd_usrp_get_rx_gain_range(handler->usrp, "", 0, handler->rx_gain_range);
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.args = "",
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.channel_list = &channel,
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// Make metadata objects for RX/TX
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.n_channels = 1
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uhd_rx_metadata_make(&handler->rx_md);
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};
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uhd_rx_metadata_make(&handler->rx_md_first);
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uhd_tx_metadata_make(&handler->tx_md, false, 0, 0, false, false);
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/* Initialize rx and tx stremers */
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uhd_rx_streamer_make(&handler->rx_stream);
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/* Find out if the master clock rate is configurable */
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error = uhd_usrp_get_rx_stream(handler->usrp, &stream_args, handler->rx_stream);
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double cur_clock, new_clock;
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if (error) {
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uhd_usrp_get_master_clock_rate(handler->usrp, 0, &cur_clock);
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fprintf(stderr, "Error opening RX stream: %d\n", error);
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printf("Trying to dynamically change Master clock...\n");
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uhd_usrp_set_master_clock_rate(handler->usrp, cur_clock/2, 0);
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uhd_usrp_get_master_clock_rate(handler->usrp, 0, &new_clock);
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if (new_clock == cur_clock) {
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handler->dynamic_rate = false;
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/* Master clock rate is not configurable. Check if it is compatible with LTE */
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int cur_clock_i = (int) cur_clock;
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if (cur_clock_i % 1920000) {
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fprintf(stderr, "Error: LTE sampling rates are not supported. Master clock rate is %.1f MHz\n", cur_clock/1e6);
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return -1;
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return -1;
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}
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uhd_tx_streamer_make(&handler->tx_stream);
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error = uhd_usrp_get_tx_stream(handler->usrp, &stream_args, handler->tx_stream);
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if (error) {
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fprintf(stderr, "Error opening TX stream: %d\n", error);
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return -1;
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}
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uhd_rx_streamer_max_num_samps(handler->rx_stream, &handler->rx_nof_samples);
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uhd_tx_streamer_max_num_samps(handler->tx_stream, &handler->tx_nof_samples);
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uhd_meta_range_make(&handler->rx_gain_range);
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uhd_usrp_get_rx_gain_range(handler->usrp, "", 0, handler->rx_gain_range);
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// Make metadata objects for RX/TX
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uhd_rx_metadata_make(&handler->rx_md);
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uhd_rx_metadata_make(&handler->rx_md_first);
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uhd_tx_metadata_make(&handler->tx_md, false, 0, 0, false, false);
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/* Find out if the master clock rate is configurable */
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double cur_clock, new_clock;
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uhd_usrp_get_master_clock_rate(handler->usrp, 0, &cur_clock);
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printf("Trying to dynamically change Master clock...\n");
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uhd_usrp_set_master_clock_rate(handler->usrp, cur_clock/2, 0);
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uhd_usrp_get_master_clock_rate(handler->usrp, 0, &new_clock);
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if (new_clock == cur_clock) {
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handler->dynamic_rate = false;
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/* Master clock rate is not configurable. Check if it is compatible with LTE */
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int cur_clock_i = (int) cur_clock;
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if (cur_clock_i % 1920000) {
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fprintf(stderr, "Error: LTE sampling rates are not supported. Master clock rate is %.1f MHz\n", cur_clock/1e6);
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return -1;
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} else {
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printf("Master clock is not configurable. Using standard symbol sizes and sampling rates.\n");
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srslte_use_standard_symbol_size(true);
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}
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} else {
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} else {
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printf("Master clock is not configurable. Using standard symbol sizes and sampling rates.\n");
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printf("Master clock is configurable. Using reduced symbol sizes and sampling rates.\n");
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srslte_use_standard_symbol_size(true);
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handler->dynamic_rate = true;
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}
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}
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return 0;
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} else {
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} else {
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printf("Master clock is configurable. Using reduced symbol sizes and sampling rates.\n");
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return SRSLTE_ERROR_INVALID_INPUTS;
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handler->dynamic_rate = true;
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}
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}
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return 0;
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}
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}
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