Enabled compute_nr_prach_seq to be used at both gNB and UE side:

- now the function gets more input arguments but can be used from both UE and gNB
- this change was needed because the prach fapi of UE differs from the gNB one

openair1/PHY/INIT/nr_init.c

@@ -418,6 +418,7 @@ void nr_phy_config_request_sim(PHY_VARS_gNB *gNB,
 
 void nr_phy_config_request(NR_PHY_Config_t *phy_config) {
   uint8_t Mod_id = phy_config->Mod_id;
+  uint8_t short_sequence, num_sequences, rootSequenceIndex, fd_occasion;
   NR_DL_FRAME_PARMS *fp = &RC.gNB[Mod_id]->frame_parms;
   nfapi_nr_config_request_scf_t *gNB_config = &RC.gNB[Mod_id]->gNB_config;
 
@@ -481,7 +482,13 @@ void nr_phy_config_request(NR_PHY_Config_t *phy_config) {
     return;
   }
 
-  compute_nr_prach_seq(gNB_config,0,RC.gNB[Mod_id]->X_u);
+  fd_occasion = 0;
+  nfapi_nr_prach_config_t *prach_config = &gNB_config->prach_config;
+  short_sequence = prach_config->prach_sequence_length.value;
+  num_sequences = prach_config->num_prach_fd_occasions_list[fd_occasion].num_root_sequences.value;
+  rootSequenceIndex = prach_config->num_prach_fd_occasions_list[fd_occasion].prach_root_sequence_index.value;
+
+  compute_nr_prach_seq(short_sequence, num_sequences, rootSequenceIndex, RC.gNB[Mod_id]->X_u);
 
   RC.gNB[Mod_id]->configured     = 1;
   LOG_I(PHY,"gNB %d configured\n",Mod_id);

openair1/PHY/NR_TRANSPORT/nr_prach_common.c

@@ -97,28 +97,21 @@ void nr_fill_du(uint16_t N_ZC,uint16_t *prach_root_sequence_map)
 
 }
 
+void compute_nr_prach_seq(uint8_t short_sequence,
+                          uint8_t num_sequences,
+                          uint8_t rootSequenceIndex,
+                          uint32_t X_u[64][839]){
 
-void compute_nr_prach_seq(nfapi_nr_config_request_scf_t *config,
-			  uint8_t fd_occasion,
-			  uint32_t X_u[64][839])
-{
   // Compute DFT of x_u => X_u[k] = x_u(inv(u)*k)^* X_u[k] = exp(j\pi u*inv(u)*k*(inv(u)*k+1)/N_ZC)
-  nfapi_nr_prach_config_t prach_config = config->prach_config;
   unsigned int k,inv_u,i;
   int N_ZC;
 
   uint16_t *prach_root_sequence_map;
   uint16_t u;
-  uint8_t short_sequence = prach_config.prach_sequence_length.value;
-  uint8_t num_sequences = prach_config.num_prach_fd_occasions_list[fd_occasion].num_root_sequences.value;
-  uint8_t rootSequenceIndex = prach_config.num_prach_fd_occasions_list[fd_occasion].prach_root_sequence_index.value;
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_UE_COMPUTE_PRACH, VCD_FUNCTION_IN);
 
-
-  LOG_D(PHY,"compute_prach_seq: NCS_config %d, prach short sequence %x, num_Seqeuences %d, rootSequenceIndex %d\n",prach_config.num_prach_fd_occasions_list[fd_occasion].prach_zero_corr_conf.value, short_sequence, num_sequences, rootSequenceIndex);
-
-
+  LOG_D(PHY,"compute_prach_seq: prach short sequence %x, num_sequences %d, rootSequenceIndex %d\n", short_sequence, num_sequences, rootSequenceIndex);
 
   N_ZC = (short_sequence) ? 139 : 839;
   //init_prach_tables(N_ZC); //moved to phy_init_lte_ue/eNB, since it takes to long in real-time
@@ -132,11 +125,8 @@ void compute_nr_prach_seq(nfapi_nr_config_request_scf_t *config,
     prach_root_sequence_map = prach_root_sequence_map_0_3;
   }
 
-
-
   LOG_D( PHY, "compute_prach_seq: done init prach_tables\n" );
 
-
   for (i=0; i<num_sequences; i++) {
     int index = (rootSequenceIndex+i) % (N_ZC-1);
 

openair1/PHY/NR_TRANSPORT/nr_transport_proto_common.h

@@ -1671,10 +1671,10 @@ void compute_prach_seq(uint16_t rootSequenceIndex,
 		       lte_frame_type_t frame_type,
 		       uint32_t X_u[64][839]);
 
-void compute_nr_prach_seq(nfapi_nr_config_request_scf_t *config,
-			  uint8_t fd_occasion,
-			  uint32_t X_u[64][839]);
-
+void compute_nr_prach_seq(uint8_t short_sequence,
+                          uint8_t num_sequences,
+                          uint8_t rootSequenceIndex,
+                          uint32_t X_u[64][839]);
 
 void init_prach_tables(int N_ZC);
 void init_nr_prach_tables(int N_ZC);