GPS synchronization

targets/RT/USER/lte-ru.c

@@ -121,7 +121,7 @@ extern int emulate_rf;
 extern int numerology;
 extern int fepw;
 extern int single_thread_flag;
-
+extern clock_source_t clock_source;
 
 extern void  phy_init_RU(RU_t*);
 extern void  phy_free_RU(RU_t*);
@@ -1411,7 +1411,8 @@ void fill_rf_config(RU_t *ru, char *rf_config_file) {
   cfg->num_rb_dl=fp->N_RB_DL;
   cfg->tx_num_channels=ru->nb_tx;
   cfg->rx_num_channels=ru->nb_rx;
-  
+  cfg->clock_source=clock_source;
+
   for (i=0; i<ru->nb_tx; i++) {
     
     cfg->tx_freq[i] = (double)fp->dl_CarrierFreq;

targets/RT/USER/lte-softmodem.c

@@ -130,7 +130,7 @@ volatile int             start_UE = 0;
 #endif
 volatile int             oai_exit = 0;
 
-static clock_source_t clock_source = internal;
+clock_source_t clock_source = internal;
 static int wait_for_sync = 0;
 
 unsigned int                    mmapped_dma=0;
@@ -942,7 +942,7 @@ int main( int argc, char **argv )
 
   printf("Reading in command-line options\n");
 
-  get_options (); 
+  get_options ();
   if (CONFIG_ISFLAGSET(CONFIG_ABORT) ) {
       fprintf(stderr,"Getting configuration failed\n");
       exit(-1);

targets/RT/USER/lte-softmodem.h

@@ -65,7 +65,7 @@
 #define CONFIG_HLP_UELOOP        "get softmodem (UE) to loop through memory instead of acquiring from HW\n"
 #define CONFIG_HLP_PHYTST        "test UE phy layer, mac disabled\n"
 #define CONFIG_HLP_DMAMAP        "sets flag for improved EXMIMO UE performance\n"  
-#define CONFIG_HLP_EXCCLK        "tells hardware to use an external clock reference\n"
+#define CONFIG_HLP_CLK           "tells hardware to use a clock reference (0:internal, 1:external, 2:gpsdo)\n"
 #define CONFIG_HLP_USIM          "use XOR autentication algo in case of test usim mode\n" 
 #define CONFIG_HLP_NOSNGLT       "Disables single-thread mode in lte-softmodem\n" 
 #define CONFIG_HLP_TADV          "Set timing_advance\n"
@@ -161,7 +161,7 @@
 {"phy-test",                CONFIG_HLP_PHYTST,      PARAMFLAG_BOOL,         iptr:&phy_test,                     defintval:0,                    TYPE_INT,       0},                     \
 {"usim-test",               CONFIG_HLP_USIM,        PARAMFLAG_BOOL,         u8ptr:&usim_test,                   defintval:0,                    TYPE_UINT8,     0},                     \
 {"mmapped-dma",             CONFIG_HLP_DMAMAP,      PARAMFLAG_BOOL,         uptr:&mmapped_dma,                  defintval:0,                    TYPE_INT,       0},                     \
-{"external-clock",          CONFIG_HLP_EXCCLK,      PARAMFLAG_BOOL,         uptr:&clock_source,                 defintval:0,                    TYPE_INT,       0},                     \
+{"clock",                   CONFIG_HLP_CLK,         0,                      uptr:&clock_source,                 defintval:0,                    TYPE_UINT,      0},                     \
 {"wait-for-sync",           NULL,                   PARAMFLAG_BOOL,         iptr:&wait_for_sync,                defintval:0,                    TYPE_INT,       0},                     \
 {"single-thread-enable",    CONFIG_HLP_NOSNGLT,     PARAMFLAG_BOOL,         iptr:&single_thread_flag,           defintval:0,                    TYPE_INT,       0},                     \
 {"threadIQ",                NULL,                   0,                      iptr:&(threads.iq),                 defintval:1,                    TYPE_INT,       0},                     \