simple_bus_master_non_blocking.cpp

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/*****************************************************************************
 
  simple_bus_master_non_blocking.cpp : The master using the non-blocking BUS
                                       interface.
 
  Original Author: Ric Hilderink, Synopsys, Inc., 2001-10-11
 
 *****************************************************************************/
 
/*****************************************************************************
 
  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
  changes you are making here.
 
      Name, Affiliation, Date:
  Description of Modification:
 
 *****************************************************************************/

#include "simple_bus_master_non_blocking.h"

[[noreturn]] void simple_bus_master_non_blocking::main_action()
{
  int mydata;
  int cnt = 0;
  unsigned int addr = m_start_address;

  wait(); // ... for the next rising clock edge
  while (true)
    {
      bus_port->read(m_unique_priority, &mydata, addr, m_lock);
      while ((bus_port->get_status(m_unique_priority) != SIMPLE_BUS_OK) &&
	     (bus_port->get_status(m_unique_priority) != SIMPLE_BUS_ERROR))
	wait();
      if (bus_port->get_status(m_unique_priority) == SIMPLE_BUS_ERROR)
	sb_fprintf(stdout, "%s %s : ERROR cannot read from %x\n",
		   sc_time_stamp().to_string().c_str(), name(), addr);

      mydata += cnt;
      cnt++;

      bus_port->write(m_unique_priority, &mydata, addr, m_lock);
      while ((bus_port->get_status(m_unique_priority) != SIMPLE_BUS_OK) &&
	     (bus_port->get_status(m_unique_priority) != SIMPLE_BUS_ERROR))
	wait();
      if (bus_port->get_status(m_unique_priority) == SIMPLE_BUS_ERROR)
	sb_fprintf(stdout, "%s %s : ERROR cannot write to %x\n",
		   sc_time_stamp().to_string().c_str(), name(), addr);
 
      wait(m_timeout, SC_NS);
      wait(); // ... for the next rising clock edge

      addr+=4; // next word (byte addressing)
      if (addr > (m_start_address+0x80)) {
        addr = m_start_address; cnt = 0;
      }
    }
}