tuner.c

车载DVD osdIC TW8816原厂代码

//============ TV Tuner =========================================================
//
//	ljy.EDITTVCHN	10/30/03~	
//				.Enhance the way to get channel number via remocon
//					NTSC AIR -	Wait to get channel number until EDITTVCHN_TIMEOUT
//								is reached or two number are endtered.
//					NTSC CABLE-	Wait to get channel number until EDITTVCHN_TIMEOUT
//								is reached or three number are endtered.
//					PAL  -		Wait to get channel number until EDITTVCHN_TIMEOUT
//								is reached.
//				.Change DisplayTVChannel()->DisplayTVChannel( chn )
//
//	ljy.TV_OPTI		10/31/03~
//				.Use constant MIN_TVCHN[] and MAX_TVCHN[] for TVInputSel
//
//	ljy01xx04		
//				.Insert 'sacnning TV...'message when start to scan TV.
//
//===============================================================================
#include "Config.h"
#include	"reg.h"
#include	"typedefs.h"

#if defined (SUPPORT_TV) && defined( NTSC_TV )

#include	"i2c.h"
#include	"main.h"
#include	"osdbasic.h"
#include    "dispinfo.h"
#include	"osdmenu.h"
#include	"tuner.h"
#include	"audio.h"
//#include	"eds.h"
//#include    "cc.h"
#include    "printf.h"
#include	"tw88.h"
#include	"etc_eep.h"
#include	"RegMap.h"

//#define  Fpc_NTSC	45750;			// 45.75Mhz

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

		PDATA BYTE	TVInputSel;
static  IDATA BYTE	MTSType;

		PDATA BYTE	TVChannel, DummyChannel;

extern  bit   TVTunerAudioActive;
	    bit   TVChManual = 0;

extern CODE struct RegisterInfo UserRange;


static  IDATA WORD TVFreq=0;

//static  IDATA BYTE  NewTVChannel=0;			//ljy.EDITTVCHN
//static  IDATA WORD  EditTVChnStartTime;		//ljy.EDITTVCHN

//#define EDITTVCHN_TIMEOUT		100		//ljy.EDITTVCHN timeout for each number(in msec)

#define MIN_FREQUENCY	0x572//0x51b//0x54a //580
#define SECAM_L_MIN		0x51b//0x54a //580
#define MAX_FREQUENCY  0x3882		// PAL FREQ INFO
#define  FREQ_INC	     16  // 1000			// 1Mhz		

// TVPRSYSTEM: X XXXXXXX :  STORE[1] :  COLORSYSTEM[bit6~0]

//---------- Control Code -----------------------------------------------------
#if TVTunerDevice==PHILIPS

CODE	WORD	kLowBand  = 0xCEA0;
CODE	WORD	kMidBand  = 0xCE90;
CODE	WORD	kHighBand = 0xCE30;

#elif TVTunerDevice==ALPS

CODE	WORD	kLowBand  = 0xCE01;
CODE	WORD	kMidBand  = 0xCE02;
CODE	WORD	kHighBand = 0xCE08;

#elif TVTunerDevice==TEMIC

CODE	WORD	kLowBand  = 0x8EA2;
CODE	WORD	kMidBand  = 0x8E94;
CODE	WORD	kHighBand = 0x8E31;

#elif TVTunerDevice==TVAVA

CODE	WORD	kLowBand  = 0x8001;
CODE	WORD	kMidBand  = 0x8002;
CODE	WORD	kHighBand = 0x8008;

#elif TVTunerDevice==LGTUNER	// TAPC-H701F (NTSC Only)

CODE	WORD	kLowBand  = 0x8E01;
CODE	WORD	kMidBand  = 0x8E02;
CODE	WORD	kHighBand = 0x8E08;

#elif TVTunerDevice==SAMSUNGMUTITUNER	// PAL/SECAM
CODE	WORD	kLowBand  = 0x8EA1;
CODE	WORD	kMidBand  = 0x8E91;
CODE	WORD	kHighBand = 0x8E31;

//070406-start
#elif TVTunerDevice==LGTUNER_MK5
CODE	WORD	kLowBand  = 0x8E01;
CODE	WORD	kMidBand  =  0x8E02;
CODE	WORD	kHighBand = 0x8E04;
//070406-end

#endif
//---------- PLL divider ------------------------------------------------------
#if TVTunerDevice==TVAVA

#define FreqIF		3800 // 38.00 Mhz
#define FreqSetp	20	 // 

#else
//TVTunerDevice==PHILIPS || TVTunerDevice==ALPS || TVTunerDevice==TEMIC || TVTunerDevice==LGTUNER || TVTunerDevice==SAMSUNGMUTITUNER
#define FreqIF		4575 // Picture Intermediate Freq. in NTSC tuner : 45.75 MHz
#define FreqSetp	16	 // 1Mhz/62.5Khz (RSA=RAB=1) // 1000/62.5 = 16

#endif

// Calculate 
#define TVFreqDiv1   0x770  //(7325L+FreqIF)*FreqSetp/100;
#define	TVFreqDiv2   0x650  //(5525+FreqIF)*FreqSetp/100;
#define TVFreqDiv5   0x7b0  //(7725+FreqIF)*FreqSetp/100;
#define TVFreqDiv7   0xdd0 //(17575L+FreqIF)*FreqSetp/100;
#define TVFreqDiv14_AIR  0x2050 // (47125L+FreqIF)*FreqSetp/100;
#define TVFreqDiv14  0xa70 // (12125L+FreqIF)*FreqSetp/100;
#define	TVFreqDiv23  0x1070 // (21725L+FreqIF)*FreqSetp/100;
#define	TVFreqDiv95  0x890 // (9125L+FreqIF)*FreqSetp/100;
#define	TVFreqDiv100 0x2b70 // (64925L+FreqIF)*FreqSetp/100;

#define	TVFreqDivINC  0x60  //6*FreqSetp;	// 6Mz step in NTSC

CODE	WORD	MIN_TVCHN[]=	{	2,	1 };		//{ AIR, CABLE }
CODE	WORD	MAX_TVCHN[]=	{	69,	125 };		


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

#ifdef NTSC_TV 
WORD Get_Channel2Divid (void)
{
	WORD FreqDiv=NIL;

	if( TVInputSel==CABLETV )  {
		if( TVChannel < 1 )TVChannel = 1;
		if( TVChannel ==1 )	FreqDiv = TVFreqDiv1;		
		else if( TVChannel >=2 && TVChannel <=4 )   FreqDiv = (TVChannel-2)*TVFreqDivINC + TVFreqDiv2;						
		else if( TVChannel >=5 && TVChannel <=6 ) 	FreqDiv = (TVChannel-5)*TVFreqDivINC + TVFreqDiv5;	//(77.55+45.75)*16
		else if( TVChannel >=95 && TVChannel <=99 )	FreqDiv = (TVChannel-95)*TVFreqDivINC + TVFreqDiv95;	//(91.25+45.75)*16
		else if( TVChannel >=14 && TVChannel <=22 ) FreqDiv = (TVChannel-14)*TVFreqDivINC + TVFreqDiv14;	//(121.25+45.75)*16
		else if( TVChannel >=7 && TVChannel <=13 )  FreqDiv = (TVChannel-7)*TVFreqDivINC + TVFreqDiv7;	//(175.25+45.75)*16
		else if( TVChannel >=23 && TVChannel <=94 ) FreqDiv = (TVChannel-23)*TVFreqDivINC + TVFreqDiv23;	//(217.25+45.75)*16
		else if( TVChannel >=100 && TVChannel <=125 ) 	FreqDiv = (TVChannel-100)*TVFreqDivINC + TVFreqDiv100;//(649.25+45.75)*16
	}
	else 
	{  // AIRTV 
		if( TVChannel < 2 )TVChannel = 2;
		if( TVChannel >=2 && TVChannel <=4 ) FreqDiv = (TVChannel-2)*TVFreqDivINC + TVFreqDiv2;			//(91.25+45.75)*16
		else if( TVChannel >=5 && TVChannel <=6 ) 	FreqDiv = (TVChannel-5)*TVFreqDivINC + TVFreqDiv5;	//(77.55+45.75)*16
		else if( TVChannel >=7 && TVChannel <=13 )	FreqDiv = (TVChannel-7)*TVFreqDivINC + TVFreqDiv7;	//(175.25+45.75)*16
		else if( TVChannel >=14 && TVChannel <=69)	FreqDiv = (TVChannel-14)*TVFreqDivINC + TVFreqDiv14_AIR;  //(471.25+45.75)*16
	}

	return FreqDiv;
}

#endif	// NTSC_TV
//-----------------------------------------------------------------------------
void SetTVFreq(WORD FreqDiv)
{
	WORD TVCtrlCode=0;

	TVFreq = FreqDiv;	

	#ifdef DEBUG_TV
	dPuts("\r\n++(SetTVFreq)");
	Printf("\r\CH:%d  ", (WORD)TVChannel);
	#endif

	#ifdef DEBUG_TV
	Printf("\rTVFreqDiv:0x%04x",(WORD)FreqDiv);
	#endif

	// Get Control Code
	if( FreqDiv <= kUpperLowBand)
			TVCtrlCode = kLowBand;
	else
	{
		if( FreqDiv <= kUpperMidBand)
				TVCtrlCode = kMidBand;
		else
				TVCtrlCode = kHighBand;
	}
	
	#ifdef DEBUG_TV
	Printf("  TVCtrlCode:0x%04x", (WORD)TVCtrlCode);
	#endif

	I2CStart();
	I2CWriteData(TVTunerI2CAddress & 0xFE);
	I2CWriteData(FreqDiv>>8);
	I2CWriteData(FreqDiv);
	I2CWriteData(TVCtrlCode>>8);
	I2CWriteData(TVCtrlCode);
	I2CStop();
	

	if( !TVTunerAudioActive )
		AudioAutoStdDetection();

	#ifdef DEBUG_TV
	dPuts("\r\n__(SetTVFreq)");
	#endif
}

//BYTE GetTVChannel(void)
//{
//	return TVChannel;
//}
//---------------------------------------------------------------------------
//Auto Fine Tune
//	if (FINE == 0) {	
	 // +/-1.5Mhz : Data +/-24, : AutoScan 
	 // +/-2.0Mhz : Data +/-32  : ManualScan
	 // Data 1: 62.25Khz
//	}  
/*#ifdef PAL_TV
// Read Tuner ADC Data
BYTE ReadTuner(void)
{
	BYTE Val;

 	I2CStart();
	I2CWriteData(TVTunerI2CAddress & 0xFE);
	I2CStart();
	I2CWriteData(TVTunerI2CAddress | 0x01);
	Val = I2CReadData();
	I2CStop();

	Printf("\rTuner ADC:0x%02x",(WORD)Val);

	return Val;
}

BYTE AFT( WORD TVFreqDiv )
{
	BYTE amount = 8, Check_Cnt=8, val;
	
	//FreqDiv = FreqDiv & ( ~SKIPCHN_MASK );
	if( IsNoInput() ) return FALSE;  // ???

	SetTVFreq(TVFreqDiv);
	delay(30);	
	val = ReadTuner();
	if(((val & 0x07) < 0x03 ) && ((val & 0x07) > 0x01 ))	
			goto true_aft;

	if( (val & 0x07) == 4 ) 	{
		TVFreqDiv -= 12;
		SetTVFreq(TVFreqDiv);
		delay(30);	
		val = ReadTuner();
		if ( (val & 0x07) == 4 ) {
			TVFreqDiv += 24;
			SetTVFreq(TVFreqDiv);
			delay(30);	
			val = ReadTuner();
			if ( (val & 0x07) == 4 ) {
				TVFreqDiv -= 36;
				SetTVFreq(TVFreqDiv);
				delay(30);	
				val = ReadTuner();
				if ( (val & 0x07) == 4 ) {
					TVFreqDiv += 48;
					SetTVFreq(TVFreqDiv);
					delay(30);	
					val = ReadTuner();
				if ( (val & 0x07) == 4 )  goto fail_aft;
			    }
			}
		}
	}

	do{
		SetTVFreq(TVFreqDiv);
		delay(30);	
		val = ReadTuner();
		if ( (val & 0x07) > 2 )  
			TVFreqDiv += amount;
		else if( (val & 0x07) < 2 )  
			TVFreqDiv -= amount;
		else goto true_aft; // == 2 ?

		amount = (amount==1 ? 1 : amount >> 1 );

	  }while( Check_Cnt-- > 0 );
	  goto fail_aft;

	if(((val & 0x07) < 0x03 ) && ((val & 0x07) > 0x01 )) goto true_aft;

fail_aft:
		return FALSE;

true_aft:
		if( IsNoInput() ) return FALSE;
		if(IsVideoInput()) 	return TRUE;
		else return FALSE;
}
#endif
*/
void SetTVChannel(void)
{
	WORD TVFreq;
	char Fine;

	//BYTE val;
	//val = ReadDecoder(MISC3);
	//WriteDecoder(MISC3, val|0x08);  // Force to output blue or black Screen
	//ljy061303..Already in DisplayTVChannel()..CheckAndClearBlockedInput();
	//ljy061303..Already in CheckAndClearMuteOn..ClearMuteOn();
	PanelBlack(1);
	CheckAndClearMuteOn();
	AudioOff();	// to remove Pop Noise.
	delay(5);

	TVFreq = Get_Channel2Divid();

	Fine = GetFineTuneEE(TVChannel);// - 31;
	#ifdef DEBUG_TV
	Printf("\rTVFreqDiv:0x%04x",(WORD)Fine);
	#endif
	if( Fine ) SetTVFreq( TVFreq + Fine); //