m52795.h

AV开关控制芯片M52795驱动源程序。用于车载LCD TV。实际系统中使用

/*******************************************************************************
**                            (c) Copyright 2004-2005, xujiajun
**                                    All Rights Reserved
**                                        V040723
**--------------文件信息--------------------------------------------------------
**创   建   人: 徐家俊
**创建日期: 2006年1月20日
**描        述:M52795驱动
**--------------版本修订历史----------------------------------------------------
** 修改人:徐家俊
** 版  本: V
** 日　期: 年月日
** 描　述:
**--------------当前版本修订----------------------------------------------------
** 修改人:徐家俊
** 版  本:
** 日　期:年月日
** 描　述:
**------------------------------------------------------------------------------
*******************************************************************************/

/*-----------------------------------------------------------------------------*/
//define the switch order
#define VIDEO_1   0x00
#define VIDEO_2   0x01
#define VIDEO_3   0x02
#define VIDEO_4   0x03

#define AUDIO_MUTE 0x00
#define AUDIO_RR   0x40
#define AUDIO_LL   0x80
#define AUDIO_RL   0xc0

#define V_AMP_0DB  0x00
#define V_AMP_6DB  0x08
//define the channel
#define AV1_CH       VIDEO_1
#define AV2_CH       VIDEO_2
#define FM_CH        VIDEO_2
#define DVD_CH       VIDEO_3// ==> Now the DVD video switch is VIDEO_1,
                            //must correct hardware and change to VIDEO_3
#define DVDBOX_CH    VIDEO_4
/*-----------------------------------------------------------------------------*/
#ifndef IN_M52795
/********************************************************************************************************
 Descriptions:          SelectSW1OfM52795
 input parameters:      use defined switch orders
 Returned value:        None
 Used global variables: None
 Calling modules:       None
 Created by:            xjj 2006/01/20
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/
void SelectSW1OfM52795(uchar VideoSelect, uchar AudioSelect, uchar VAmp);
/********************************************************************************************************
 Descriptions:          SelectSW2OfM52795
 input parameters:      use defined switch orders
 Returned value:        None
 Used global variables: None
 Calling modules:       None
 Created by:            xjj 2006/01/20
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/
void SelectSW2OfM52795(uchar VideoSelect, uchar AudioSelect, uchar VAmp);

/********************************************************************************************************
 Descriptions:          Select all switch of M52795
 input parameters:      use defined switch orders
 Returned value:        None
 Used global variables: None
 Calling modules:       None
 Created by:            simon 2006.05.05
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/
void SelectAllSwOfM52795(uchar VideoSelect, uchar AudioSelect, uchar VAmp);

/********************************************************************************************************
 Descriptions:          Set M52795 two switchs mute
 input parameters:      use defined switch orders
 Returned value:        None
 Used global variables: None
 Calling modules:       None
 Created by:            xjj 2006/01/20
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/
void M52795Mute(void);
/********************************************************************************************************
 Descriptions:          Set the I/O of M52795
 input parameters:      Data: D3=D5;D2=D4;D1=DD;D0=DC; high 4 bits are ignored.
 Returned value:        None
 Used global variables: None
 Calling modules:       None
 Created by:            xjj 2006/01/20
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/
void SetIOM52795(uchar Data);
/********************************************************************************************************
 Descriptions:          Get the I/O of M52795
 input parameters:      None
 Returned value:        D3=D5;D2=D4;D1=DD;D0=DC; high 4 bits are ignored.
 Used global variables: None
 Calling modules:       None
 Created by:            xjj 2006/01/20
-------------------------------------------------------------------------------------------------------
 Modified by:
********************************************************************************************************/
//uchar GetIOM52795(void);

#endif//#ifndef IN_M52795