slot_worker: add compile time option to write baseband signal to file

srsenb/src/phy/nr/slot_worker.cc

@@ -14,6 +14,13 @@
 #include "srsran/common/buffer_pool.h"
 #include "srsran/common/common.h"
 
+#define DEBUG_WRITE_FILE
+
+#ifdef DEBUG_WRITE_FILE
+FILE*           f;
+static uint32_t num_slots = 0;
+#endif
+
 namespace srsenb {
 namespace nr {
 slot_worker::slot_worker(srsran::phy_common_interface& common_,
@@ -86,6 +93,12 @@ bool slot_worker::init(const args_t& args)
     return false;
   }
 
+#ifdef DEBUG_WRITE_FILE
+  const char* filename = "nr_baseband.dat";
+  printf("Opening %s to dump baseband\n", filename);
+  f = fopen(filename, "w");
+#endif
+
   return true;
 }
 
@@ -407,6 +420,18 @@ void slot_worker::work_imp()
   }
 
   common.worker_end(context, true, tx_rf_buffer);
+
+#ifdef DEBUG_WRITE_FILE
+  fwrite(tx_rf_buffer.get(0), tx_rf_buffer.get_nof_samples() * sizeof(cf_t), 1, f);
+#endif
+
+#ifdef DEBUG_WRITE_FILE
+  if (num_slots == 30) {
+    fclose(f);
+    exit(-1);
+  }
+  num_slots++;
+#endif
 }
 
 bool slot_worker::set_common_cfg(const srsran_carrier_nr_t&   carrier,