mirror of https://github.com/PentHertz/srsLTE.git
Fix x300 issue with changing master_clock_rate on runtime
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40028f45af
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@ -241,16 +241,27 @@ int rf_uhd_open(char *args, void **h)
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uhd_string_vector_make(&devices_str);
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uhd_usrp_find("", &devices_str);
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char args2[512];
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// Allow NULL parameter
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if (args == NULL) {
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args = "";
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}
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} else {
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/* If device type or name not given in args, choose a B200 */
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if (args[0]=='\0') {
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// If B200 is available, use it
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if (find_string(devices_str, "type=b200") && !strstr(args, "recv_frame_size")) {
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// If B200 is available, use it
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args = "type=b200,recv_frame_size=9232,send_frame_size=9232";
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} else if (find_string(devices_str, "type=x300")) {
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// Else if X300 is available, set master clock rate now (can't be changed later)
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args = "type=x300,master_clock_rate=184.32e6";
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}
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} else {
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// If args is set and x300 type is specified, make sure master_clock_rate is defined
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if (strstr(args, "type=x300") && !strstr(args, "master_clock_rate")) {
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sprintf(args2, "%s,master_clock_rate=184.32e6",args);
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args = args2;
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}
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}
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}
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@ -262,12 +273,6 @@ int rf_uhd_open(char *args, void **h)
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return -1;
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}
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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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size_t channel = 0;
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uhd_stream_args_t stream_args = {
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.cpu_format = "fc32",
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@ -307,23 +312,6 @@ int rf_uhd_open(char *args, void **h)
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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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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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printf("Master clock is configurable. Using reduced symbol sizes and sampling rates.\n");
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handler->dynamic_rate = true;
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}
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return 0;
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} else {
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return SRSLTE_ERROR_INVALID_INPUTS;
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