source: rtems/c/src/lib/libcpu/mips/mongoosev/duart/README.mguart @ acdb6558

#
#  $Id$
#

Configuration Table Use
=======================

sDeviceName

   The name of this device.

deviceType

   This field must be SERIAL_MG5UART.

pDeviceFns

   The device interface control table.  This may be:
      + mg5uart_fns for interrupt driven IO
      + mg5uart_fns_polled for polled IO

deviceProbe

   This is the address of the routine which probes to see if the device
   is present.

pDeviceFlow

   This field is ignored as hardware flow control is not currently supported.

ulMargin

    This is currently unused.

ulHysteresis

    This is currently unused.

pDeviceParams

    This is set to the default settings.

ulCtrlPort1

   This field is the address of the command register shared by both ports.

ulCtrlPort2

   This field is the address of the port being used.

ulDataPort

   This field is set to MG5UART_PORTA or MG5UART_PORTB.

getRegister
setRegister

   These do NOT follow standard conventions and are ignored.
   The register address routines are hard-coded as this is 
   an on-CPU part and assumed to provide a 32-bit wide interface.

getData

   This is address of the RX buffer register.

setData

   This is address of the TX buffer register.

ulClock

   baudRate Clock

ulIntVector

   This is the interrupt vector number associated with this chip.

Example:

#if (CONSOLE_USE_INTERRUPTS)
#define MG5UART_FUNCTIONS &mg5uart_fns
#else
#define MG5UART_FUNCTIONS &mg5uart_fns_polled
#endif

{
  "/dev/com0",                            /* sDeviceName */
  SERIAL_MG5UART,                         /* deviceType */
  MG5UART_FUNCTIONS,                      /* pDeviceFns */
  NULL,                                   /* deviceProbe, assume it is there */
  NULL,                                   /* pDeviceFlow */
  16,                                     /* ulMargin */
  8,                                      /* ulHysteresis */
  (void *) NULL,               /* NULL */ /* pDeviceParams */
  MONGOOSEV_PERIPHERAL_COMMAND_REGISTER,  /* ulCtrlPort1 */
  MONGOOSEV_UART0_BASE,                   /* ulCtrlPort2 */
  MG5UART_UART0,                          /* ulDataPort */
  mg5uart_get_register,                   /* getRegister */
  mg5uart_set_register,                   /* setRegister */
  NULL, /* unused */                      /* getData */
  NULL, /* unused */                      /* setData */
  12000000,                               /* ulClock */
  MONGOOSEV_IRQ_UART0_RX_FRAME_ERROR      /* ulIntVector -- base for port */
}