pxa255_rtc.h

来自「老外的一个开源项目」· C头文件 代码 · 共 61 行

// Copyright (c) David Vescovi.  All rights reserved.
// Part of Project DrumStix
// Windows Embedded Developers Interest Group (WE-DIG) community project.
// http://www.we-dig.org
// Copyright (c) Microsoft Corporation.  All rights reserved.
//------------------------------------------------------------------------------
//
//  Header: pxa255_rtc.h
//
//  Defines the Real Time Clock (RTC) register layout and associated 
//  types and constants.
//
//------------------------------------------------------------------------------
#ifndef _PXA255_RTC_H_
#define _PXA255_RTC_H_

#if __cplusplus
extern "C" {
#endif

//------------------------------------------------------------------------------
//
//  Type:  RTC_REG_T
//
//  Defines the RTC control register layout.
//
//------------------------------------------------------------------------------

typedef struct
{
	VUINT32_T	RCNR;		// RTC count register
	VUINT32_T	RTAR;		// RTC alarm register
	VUINT32_T	RTSR;		// RTC status register
	VUINT32_T	RTTR;		// RTC timer trim register
} RTC_REG_T, *PRTC_REG_T;

//
// RTSR Bits
//
#define RTSR_AL			0x00000001		// RTC Alarm detect
#define RTSR_HZ			0x00000002		// HZ rising edge detect
#define RTSR_ALE		0x00000004		// RTC Alarm enable
#define RTSR_HZE		0x00000008		// HZ enable

#define RTSR_RESERVED_BITS	(0xFFFFFFF0)

// 
// RTSR has mixed bits: r/w and sticky
// Mask for use with write to clear bits
//
#define RTSR_MASK		(RTSR_AL | RTSR_HZ)


//------------------------------------------------------------------------------

#if __cplusplus
}
#endif

#endif