gpt.h

来自「freescale i.mx31 BSP CE5.0全部源码」· C头文件 代码 · 共 79 行

//------------------------------------------------------------------------------
//
//  Copyright (C) 2004, Motorola Inc. All Rights Reserved
//
//------------------------------------------------------------------------------
//
//  Copyright (C) 2004, Freescale Semiconductor, Inc. All Rights Reserved
//  THIS SOURCE CODE IS CONFIDENTIAL AND PROPRIETARY AND MAY NOT
//  BE USED OR DISTRIBUTED WITHOUT THE WRITTEN PERMISSION OF
//  Freescale Semiconductor, Inc.
//
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
//
//  File:  gpt.h
//
//  Public definitions for General Purpose Timer Driver
//
//------------------------------------------------------------------------------
#ifndef __GPT_H__
#define __GPT_H__

#ifdef __cplusplus
extern "C" {
#endif

//------------------------------------------------------------------------------
// Defines

// IOCTL to create GPT timer event handle
#define GPT_IOCTL_TIMER_CREATE_EVENT     1
// IOCTL to close GPT timer event handle
#define GPT_IOCTL_TIMER_RELEASE_EVENT     2
// IOCTL to enable GPT interrupts
#define GPT_IOCTL_INT_ENABLE         3
// IOCTL to disable GPT interrupts
#define GPT_IOCTL_INT_DISABLE        4
// IOCTL to start the GPT timer
#define GPT_IOCTL_TIMER_START        5
// IOCTL to stop the GPT timer
#define GPT_IOCTL_TIMER_STOP         6
// IOCTL to set the delay between
// interrupts for the GPT timer
#define GPT_IOCTL_TIMER_SET_DELAY    7


//------------------------------------------------------------------------------
// Types

// GPT timer mode
typedef enum timerMode{
    timerModePeriodic,
    timerModeFreeRunning
} timerMode_c;

// GPT set timer delay packet
typedef struct
{
    timerMode_c timerMode;
    UINT32 period;
} GPT_TIMER_SET_PKT, *PGPT_TIMER_SET_PKT;

//------------------------------------------------------------------------------
// Functions

HANDLE GptOpenHandle(void);
BOOL GptCloseHandle(HANDLE);
HANDLE GptCreateTimerEvent(HANDLE, LPTSTR);
BOOL  GptReleaseTimerEvent(HANDLE, LPTSTR);
BOOL  GptSetTimer(HANDLE, PGPT_TIMER_SET_PKT);
BOOL  GptStart(HANDLE);
BOOL  GptStop(HANDLE);

#ifdef __cplusplus
}
#endif

#endif   // __GPT_H__