sysserial.c

au1500开发的应用程序

/* sysSerial.c - V100R001CPE BSP serial device initialization */

/* Copyright 2002-2004 Founder Communications,Inc. */

/*
modification history
--------------------
01a,14mar05,fhchen  adapted from pb1500/sysSerial.c (ver 01a).
*/

/*
DESCRIPTION

This library contains routines for BSP serial device initialization

*/

#include "vxWorks.h"
#include "iv.h"
#include "intLib.h"
#include "config.h"
#include "sysLib.h"
#include "au1500Sio.h"

/* defines */

#define N_UARTS		        2            /* Number of serial I/O channels */
#define UART_BAUD_RATE          115200
#define UART_BAUD_CLK_FREQ	(CPU_CLOCK_RATE/(SD_DIVISOR * 2))

/* locals */

LOCAL AUSIO_CHAN auSioChan [N_UARTS];

/***************************************************************************
*
* sysSerialHwInit - initialize the BSP serial devices to a quiescent state
*
* This routine initializes the BSP serial device descriptors and puts the
* devices in a quiescent state.  It is called from sysHwInit() with
* interrupts locked.
*
* RETURNS: N/A
*
* SEE ALSO: sysHwInit()
*/ 

void sysSerialHwInit (void)
    {

    /* UART0 */

    auSioChan[0].xtal	  = UART_BAUD_CLK_FREQ;
    auSioChan[0].baudRate = UART_BAUD_RATE;
    auSioChan[0].options  = CLOCAL;
    auSioChan[0].regs     = (AU1000_UART *)PHYS_TO_K1(UART0_PHYS_ADDR);
    auSioDevInit(&auSioChan[0]);

    /* UART3 */

    auSioChan[1].xtal	  = UART_BAUD_CLK_FREQ;
    auSioChan[1].baudRate = UART_BAUD_RATE;
    auSioChan[1].options  = CLOCAL;
    auSioChan[1].regs     = (AU1000_UART *)PHYS_TO_K1(UART3_PHYS_ADDR);
    auSioDevInit(&auSioChan[1]);
    }

/***************************************************************************
*
* sysSerialHwInit2 - connect BSP serial device interrupts
*
* This routine connects the BSP serial device interrupts.  It is called from
* sysHwInit2().  
* 
* Serial device interrupts cannot be connected in sysSerialHwInit() because
* the kernel memory allocator was not initialized at that point, and
* intConnect() calls malloc().
*
* RETURNS: N/A
*
* SEE ALSO: sysHwInit2()
*/ 

void sysSerialHwInit2 (void)
    {
    /* Connect and enable serial interrupts. */

    au1000IntConnect(IV_UART0_VEC, auSioInt, (int)&auSioChan[0], TRUE);
    au1000IntConnect(IV_UART3_VEC, auSioInt, (int)&auSioChan[1], TRUE);
    }

/***************************************************************************
*
* sysSerialChanGet - get the SIO_CHAN device associated with a serial channel
*
* This routine gets the SIO_CHAN device associated with a specified serial
* channel.
*
* RETURNS: A pointer to the SIO_CHAN structure for the channel, or ERROR
* if the channel is invalid.
*/ 

SIO_CHAN * sysSerialChanGet
    (
    int		channel
    )
    {
    if (channel == 0) return ((SIO_CHAN *)&auSioChan[0]);
    if (channel == 1) return ((SIO_CHAN *)&auSioChan[1]);

    return (NULL);
    }