lh7a404_wdt_driver.h

在sharp 404开发板的串口测试代码

/***********************************************************************
 * $Workfile:   lh7a404_wdt_driver.h  $
 * $Revision:   1.0  $
 * $Author:   WellsK  $
 * $Date:   Jun 30 2003 17:16:48  $
 *
 * Project: LH7A404 WDT driver
 *
 * Description:
 *     This file contains driver support for the WDT module on the
 *     LH7A404
 *
 * Revision History:
 * $Log:   //smaicnt2/pvcs/VM/sharpmcu/archives/sharpmcu/software/csps/lh7a404/include/lh7a404_wdt_driver.h-arc  $
 * 
 *    Rev 1.0   Jun 30 2003 17:16:48   WellsK
 * Initial revision.
 * 
 *
 ***********************************************************************
 * SHARP MICROELECTRONICS OF THE AMERICAS MAKES NO REPRESENTATION
 * OR WARRANTIES WITH RESPECT TO THE PERFORMANCE OF THIS SOFTWARE,
 * AND SPECIFICALLY DISCLAIMS ANY RESPONSIBILITY FOR ANY DAMAGES, 
 * SPECIAL OR CONSEQUENTIAL, CONNECTED WITH THE USE OF THIS SOFTWARE.
 *
 * SHARP MICROELECTRONICS OF THE AMERICAS PROVIDES THIS SOFTWARE SOLELY 
 * FOR THE PURPOSE OF SOFTWARE DEVELOPMENT INCORPORATING THE USE OF A 
 * SHARP MICROCONTROLLER OR SYSTEM-ON-CHIP PRODUCT. USE OF THIS SOURCE
 * FILE IMPLIES ACCEPTANCE OF THESE CONDITIONS.
 *
 * COPYRIGHT (C) 2001 SHARP MICROELECTRONICS OF THE AMERICAS, INC.
 *     CAMAS, WA
 **********************************************************************/

#ifndef LH7A404_WDT_DRIVER_H
#define LH7A404_WDT_DRIVER_H

#ifdef __cplusplus
extern "C" {
#endif

#include "lh7a404_wdt.h"

/***********************************************************************
 * WDT device configuration commands (IOCTL commands and arguments)
 **********************************************************************/

/* WDT device commands (IOCTL commands) */
typedef enum {
    WDT_ENABLE,     /* Enable or disable watchdog timer, use arg = 0
                       to disable, arg = 1 to enable */
    WDT_FREEZE,     /* Freeze and enable watchdog timer, no args */
    WDT_RESET,      /* Perform a watchdog reset, no args */
    WDT_INT_FIRST,  /* Enable or disable Interrupt first mode, use arg
                       = 0 to disable, arg = 1 to enable */
    WDT_COUNT,      /* Set watchdog count value, arg = 0 to 15, which
                       represents 2**16 to 2**31 PCLKS per WDT tick */
    WDT_GET_STATUS  /* Get a watchdog status, use an argument type of
                       WDT_IOCTL_STS_T as the argument to return the
                       correct status */
} WDT_IOCTL_CMD_T;

/* WDT device arguments for WDT_GET_STATUS command (IOCTL arguments) */
typedef enum {
    WDT_ENABLE_ST,  /* Returns watchdog enable status (1 = enabled, 0
                       = disabled */
    WDT_FREEZE_ST,  /* Returns watchdog freeze status (1 = frozen, 0
                       = not frozen */
    WDT_RESET_ST,   /* Returns watchdog system reset status (1 = system
                       reset has not occurred, 0 = system reset has
                       occurred */
    WDT_INT_FIRST_ST, /* Returns interrupt first state (1 = interrupt
                         first mode enabled, 0 = interrupt first mode
                         disabled */
    WDT_COUNT_ST,   /* Return watchdog count value, a value between 0
                       and 15, which represents 2**16 to 2**31 PCLKS
                       per WDT tick */
    WDT_FIQ_ST      /* Returns FIQ status (1 = FIQ has occurred, 0 =
                       FIQ is pending */
} WDT_IOCTL_STS_T;

/***********************************************************************
 * WDT driver API functions
 **********************************************************************/

/* Open the watchdog timer */
INT_32 wdt_open(void *ipbase, INT_32 arg);

/* Close the watchdog timer */
STATUS wdt_close(INT_32 devid);

/* Watchdog timer configuration block */
STATUS wdt_ioctl(INT_32 devid,
                 INT_32 cmd,
                 INT_32 arg);

/* WDT read function (stub only) */
INT_32 wdt_read(INT_32 devid,
                void *buffer,
                INT_32 max_bytes);

/* WDT write function (stub only) */
INT_32 wdt_write(INT_32 devid,
                 void *buffer,
                 INT_32 n_bytes);

#ifdef __cplusplus
}
#endif

#endif /* LH7A404_WDT_DRIVER_H */