the rrc now only works with the stack latest tti, instead of mac's tti

lib/include/srslte/interfaces/ue_interfaces.h

@@ -37,6 +37,7 @@
 #include "srslte/common/interfaces_common.h"
 #include "srslte/common/security.h"
 #include "srslte/common/stack_procedure.h"
+#include "srslte/common/tti_point.h"
 #include "srslte/interfaces/rrc_interface_types.h"
 #include "srslte/phy/channel/channel.h"
 #include "srslte/phy/rf/rf.h"
@@ -421,8 +422,6 @@ public:
   /* Instructs the MAC to start receiving an MCH */
   virtual void mch_start_rx(uint32_t lcid) = 0;
 
-  virtual uint32_t get_current_tti() = 0;
-
   virtual void set_config(srslte::mac_cfg_t& mac_cfg) = 0;
 
   virtual void get_rntis(ue_rnti_t* rntis)                      = 0;
@@ -611,8 +610,9 @@ public:
 class stack_interface_rrc
 {
 public:
-  virtual void start_cell_search()                                              = 0;
-  virtual void start_cell_select(const phy_interface_rrc_lte::phy_cell_t* cell) = 0;
+  virtual void              start_cell_search()                                              = 0;
+  virtual void              start_cell_select(const phy_interface_rrc_lte::phy_cell_t* cell) = 0;
+  virtual srslte::tti_point get_current_tti()                                                = 0;
 };
 
 // Combined interface for PHY to access stack (MAC and RRC)

srsue/hdr/stack/mac/proc_phr.h

@@ -37,7 +37,7 @@ public:
   phr_proc();
   void init(phy_interface_mac_lte* phy_h, srslte::log* log_h_, srslte::timer_handler* timers_db_);
   void set_config(srslte::phr_cfg_t& cfg);
-  void step(uint32_t tti);
+  void step();
   void reset();
 
   bool generate_phr_on_ul_grant(float* phr);

srsue/hdr/stack/ue_stack_lte.h

@@ -124,8 +124,9 @@ public:
   void start_prach_configuration() final;
 
   // Interface for RRC
-  void start_cell_search() final;
-  void start_cell_select(const phy_interface_rrc_lte::phy_cell_t* cell) final;
+  void      start_cell_search() final;
+  void      start_cell_select(const phy_interface_rrc_lte::phy_cell_t* cell) final;
+  tti_point get_current_tti() final { return current_tti; }
 
   // Task Handling interface
   srslte::timer_handler::unique_timer get_unique_timer() override { return timers.get_unique_timer(); }
@@ -143,6 +144,7 @@ private:
   bool                  running;
   srsue::stack_args_t   args;
   std::vector<uint32_t> proc_time;
+  srslte::tti_point     current_tti;
 
   // timers
   srslte::timer_handler timers;

srsue/src/stack/mac/mac.cc

@@ -214,7 +214,7 @@ void mac::run_tti(const uint32_t tti)
   Debug("Running MAC tti=%d\n", tti);
   mux_unit.step();
   bsr_procedure.step(tti);
-  phr_procedure.step(tti);
+  phr_procedure.step();
 
   // Check if BSR procedure need to start SR
   if (bsr_procedure.need_to_send_sr(tti)) {

srsue/src/stack/mac/proc_phr.cc

@@ -126,7 +126,7 @@ void phr_proc::timer_expired(uint32_t timer_id)
   }
 }
 
-void phr_proc::step(uint32_t tti)
+void phr_proc::step()
 {
   if (phr_cfg.enabled && initiated) {
     if (pathloss_changed() && timer_prohibit.is_expired()) {

srsue/src/stack/rrc/rrc_procedures.cc

@@ -305,7 +305,7 @@ void rrc::si_acquire_proc::start_si_acquire()
   const uint32_t nof_sib_harq_retxs = 5;
 
   // Instruct MAC to decode SIB (non-blocking)
-  tti_point tti{rrc_ptr->mac->get_current_tti()};
+  tti_point tti = rrc_ptr->stack->get_current_tti();
   auto      ret = compute_si_window(tti.to_uint(), sib_index, sched_index, period, rrc_ptr->serving_cell->sib1ptr());
   tti_point si_win_start = tti_point{ret.first};
   if (si_win_start < tti) {

srsue/src/stack/ue_stack_lte.cc

@@ -308,8 +308,9 @@ void ue_stack_lte::run_tti_impl(uint32_t tti, uint32_t tti_jump)
   if (args.have_tti_time_stats) {
     tti_tprof.start();
   }
+  current_tti = tti_point{tti};
 
-  // perform tasks in this TTI
+  // perform tasks for the received TTI range
   for (uint32_t i = 0; i < tti_jump; ++i) {
     uint32_t next_tti = TTI_SUB(tti, (tti_jump - i - 1));
     mac.run_tti(next_tti);