C++ (Cpp) PCI_bus_read示例

示例#1

rtems_unsigned32 Read_pci_device_register(
  rtems_unsigned32 address
)
{
  rtems_unsigned32 data;

  /*
   * Write the PCI configuration address
   */
   PCI_bus_write( (volatile rtems_unsigned32 *)SCORE603E_PCI_IO_CFG_ADDR, address );
  
  /*
   *  Delay needed when running out of DRAM
   */
   PCI_bus_delay ();

  /*
   * read data
   */
  data = PCI_bus_read( (volatile rtems_unsigned32 *)SCORE603E_PCI_IO_CFG_DATA );
  
  return data;
}

示例#2

文件： PCI.c 项目： rtemss/rtems

uint32_t         Read_pci_device_register(
  uint32_t         address
)
{
  uint32_t         data;

  /*
   * Write the PCI configuration address
   */
   PCI_bus_write( (volatile uint32_t*)SCORE603E_PCI_IO_CFG_ADDR, address );

  /*
   *  Delay needed when running out of DRAM
   */
   PCI_bus_delay ();

  /*
   * read data
   */
  data = PCI_bus_read( (volatile uint32_t*)SCORE603E_PCI_IO_CFG_DATA );

  return data;
}