avsys.h

车载电子影音系统dvd播放系统原程序代码

//  **************************************************************************
//      (C)Copyright Cheertek Inc. 2002-2003,
//          D300, all right reserved.

//      Product : WinAV  Firmware

//      Date    : 2002.09.23
//      Author  : Cheertek (D300 LLY)
//      Purpose : AVSYS module
//                The moudle will control the flow of Tuner(Radio)/ AMP
//      Sources : avsys.c/ avsys.h
//  **************************************************************************
#ifndef __AVSYS_H__
#define __AVSYS_H__

#ifdef __cplusplus
   extern "C"{
#endif

///////////////////////////////////////////////////////////////////////////
// ***** Some definition for global variable usage Area *****
// [1] Band ID (__StationInfo->bBand)
// ID must start from '0', because F/W will access freqency array by this index directly
// Ex. wFreq[BAND_AM] : AM frequency
#define BAND_FM     0x0
#define BAND_AM     0x1

// [2] Special Tuner mode info. (__bTunerMode)
// [7:4] : tuner special application mode
// [3:0] : reserve for auto-scan submode, ex up-scan/ down-scan (Same as _TUNER_TuningFreq() parameter meaning)
// LLY2.78b, re-adjut the meaning of bit [7:4]
#define TUNER_MODE_NONE             0x00
#define TUNER_MODE_SCAN_ONE         0x10
#define TUNER_MODE_SCAN_MORE        0x20
#define TUNER_MODE_AUTO_SCAN        TUNER_MODE_SCAN_ONE
// Notice: must using "==" operation to check search scan mode
// becaseu, it combine auto scan and scan mode two attributes
#define TUNER_MODE_SEARCH_SCAN      (TUNER_MODE_AUTO_SCAN|TUNER_MODE_SCAN_MORE)
#define TUNER_MODE_MEMORY           0x80

// [3] Peripheral input component status (__bPeriperalIN) -- LLY.278a
#define NO_INPUT                    0x00
#define EARPHONE_ACTIVE             0x01
#define MICPHONE_ACTIVE             0x02

////////////////////////////////////////////////////////////////////////////
// ***** Some Global Definition Area *****
// [1] Max FM/ AM station number
// LLY.278, exlarge the maximum FM/AM number from 10/5 to 20/20
#define MAX_FM_STATION_NO       20
#define MAX_AM_STATION_NO       20

// [2] The Minimum/ Maximum Freqency of Each Band
#define MIN_FM_FREQ                 8750
#define MAX_FM_FREQ                 10800
#define MIN_AM_FREQ                 522
#define MAX_AM_FREQ                 1620

// [3] Default Tuner Band & Freqency info.
#define TUNER_DEFAULT_BAND          BAND_FM
#define TUNER_DEFAULT_FM_FREQ       MIN_FM_FREQ
#define TUNER_DEFAULT_AM_FREQ       MIN_AM_FREQ

// [4] The Gap of each time tuning
#define FM_GAP_PER_TUNING           5   // means : 0.05 MHz
#define AM_GAP_PER_TUNING           9   // means : 9 KHz

// [5] Debug info. for tuner mode
#define TUNER_BUFFER_OVERFLOW       3001

// [6] The BYTE number to keep each station info.  -- LLY.278-1
#define STATION_BYTE_NO             2

// [7] The time gap between two search scan action -- LLY2.78b
#define TIME_GAP_FOR_SEARCH_SCAN    ((DWORD)COUNT_3_SEC)
//////////////////////////////////////////////////////////////////////////
// ***** Some definition for APIs parameter usage Area *****
// [1] AVSYS_Initial()
// [3:0] means : Initial AV system action
// [7:4] means : Default write or current read -- DATA_DEFAULT or None
#define POWERON_INITIAL             0x01
#define TUNER_INITIAL               0x02

// [2] AVSYS_TunerDataAccess()
// [3:0] means : Read/ Write action
// [7:4] means : Default value or not
#define DATA_READ                   0x01
#define DATA_WRITE                  0x02
#define DATA_DEFAULT                0x10

// [3] _TUNER_MemoryAction()
#define MEMORY_SAVE                 0x1
#define MEMORY_GET                  0x2

// [4] _TUNER_TuningFreq()
// Notice: will be used for __bTunerMode too
#define UP_TUNING                   0x01
#define DOWN_TUNING                 0x02

// [5] _TUNER_AutoScan()
#define DISABLE_AUTO_SCAN           0
#define ENABLE_UP_SCAN              UP_TUNING
#define ENABLE_DOWN_SCAN            DOWN_TUNING

// [6] The action of program tuner IC -- HAL1_ProgramTuner()
// Notice: Only use [7:4] bit,
//         and [3:0] is used for band info.(BAND_FM, BAND_AM)
#define SET_BAND                    0x10
#define AUTO_SCAN                   0x20
#define MANUAL_SCAN                 0x40
#define SEARCH_SCAN                 0x80

// [7] Lock or unlock info. while auto-scan station -- HAL1_ProgramTuner()
#define STATION_UNLOCK              0x0
#define STATION_LOCK                0x1

// [8] The action result after query search scan mode -- _TUNER_QuerySearchScan()
#define SEARCH_SCAN_STOP            0x0
#define SEARCH_SCAN_CONTINUE        0x1
#define SEARCH_SCAN_POSTPOND        0x2
///////////////////////////////////////////////////////////////////////////
// ***** Structure Definition Area *****
// [1] Current band & frequency info.
typedef struct tagSTATION_INFO
{
    BYTE bBand; // current band
    WORD wFreq[2]; // correspond band's frequency
}   STATION_INFO, * PSTATION_INFO;
#define STATION_INFO_LENGTH     5   // 1byte+2word

// [2] Memory station info.
typedef struct tagMEMORY_STATION
{
    WORD wFM[MAX_FM_STATION_NO];
    WORD wAM[MAX_AM_STATION_NO];
}   MEMORY_STATION, * PMEMORY_STATION;

// LLY.278, define the structure length base on element number: 20FM + 20 AM (80 bytes)
#define MEMORY_STATION_LENGTH     ((MAX_FM_STATION_NO+MAX_AM_STATION_NO)*2)

//Kevin2.81-2, add
// If define it, F/W will save/read the tuner value into/from serial-EPROM -- Kevin2.81-2
// Otherwise, F/W will read the tuner value using using default, and not svae tuner values
#define TUNER_VALUE_SAVE_IN_SERIAL_EPROM

///////////////////////////////////////////////////////////////////////////
// ***** Extern Global Variables Area ****
#ifdef  SUPPORT_AV_SYSTEM
extern  BYTE    __bAUXChannel;

// Only for tuner mode usage
#ifndef NO_TUNER
extern  PSTATION_INFO   __StationInfo;  // current station info.
extern  PMEMORY_STATION __MemStation;   // memory station info.
#endif  // #ifndef NO_TUNER

#endif  // #ifdef SUPPORT_AV_SYSTEM


///////////////////////////////////////////////////////////////////////////
// ***** External Function Prototype Area *****
void AVSYS_Initial(BYTE bMode); 
void AVSYS_ExitTuner(void);
//BYTE AVSYS_ProcessKey(BYTE bKey, WORD wParam);
BYTE AVSYS_ProcessKey(BYTE bKey);
void AVSYS_Trigger(void);
void AVSYS_TunerDataAccess(BYTE bAction); //Kevin2.81-2, rename

#ifdef __cplusplus
   }
#endif

#endif  // __AVSYS_H__