radio.c

车载DVD+tuner,意法半导体的方案. 纯C编写.

			Radio.F_TunerDispReq=1;
			break;
			
	}

}

/*********************************************
	Function:		RadioDisplay
	Description:	
	Write/Modify:	Perry.Liang
	Time:		2006-1-24- 15:38:29
*********************************************/
void RadioDisplay(void)
{
	unsigned int i;
	unsigned char j;

	if(System.DispMode.Next==DISPMODE_RADIO)
	{
		Radio.F_TunerDispReq=1;
	}
	if(System.DispMode.Last==DISPMODE_RADIO)
	{
		DisplayClear(CLEARNUM9);
		F_DISP_P=0;
		F_DISP_ST=0;
	}
	// display others
	if(System.DispMode.Current!=DISPMODE_RADIO)return;
	
	if(F_HalfSecondOut)
	{
		ShowVolBar();
		if(F_SpecOK)
		{
			F_SpecOK=0;
			ShowSpectrum();
		}
		RadioTunerRead();
		if (F_TunerStereo)
			F_DISP_ST=1;
		else
			F_DISP_ST=0;
	}
	
	if(!Radio.F_TunerDispReq)return;
	Radio.F_TunerDispReq=0;
		
	if(RADIO_IN_SEARCH)
	{
		if(RADIO_IN_AS)
		{
			//PrintLine2("   Auto Store");
			DispNum[0]=' ';
			DispNum[1]='S';
			DispNum[2]='T';
			DispNum[3]='O';
			DispNum[4]='R';
			DispNum[5]='E';
			DispNum[6]=' ';
			DispNum[7]=' ';
			DisplayRefresh();
		}
		else
		{
			/*if(RDS.F_PISeek)
				PrintLine2("     PI Seek");
			else if(RDS.F_TAEnable)
				PrintLine2("     TA Seek");
			else
				PrintLine2("   Auto Seek");*/
			DispNum[0]=' ';
			DispNum[1]=' ';
			DispNum[2]='S';
			DispNum[3]='E';
			DispNum[4]='E';
			DispNum[5]='K';
			DispNum[6]=' ';
			DispNum[7]=' ';
			DisplayRefresh();
		}
		DispNum[8]=' ';
		F_DISP_P=0;
		return;
	}
	
	if(Radio.Band[Radio.CurrentBand].CurrentMem==0)
	{
		DispNum[8]=' ';
	}
	else
	{
		DispNum[8]=Radio.Band[Radio.CurrentBand].CurrentMem;
	}
	
	if(FreqInFM(Radio.Freq))
	{
		DispNum[0]='F';
		DispNum[1]='M';
		DispNum[2]=Radio.CurrentBand+1;
		
		i=Radio.Freq;
		j=i%10;
		if(Radio.Area==AREA_USA ||Radio.Area==AREA_LATIN)
			DispNum[7]=' ';
		else
			DispNum[7]=j;
		i=i/10;
		j=i%10;
		DispNum[6]=j;
		i=i/10;
		j=i%10;
		DispNum[5]=j;
		i=i/10;
		j=i%10;
		DispNum[4]=j;
		i=i/10;
		j=i%10;
		if(j==0)
			DispNum[3]=' ';
		else
			DispNum[3]=j;

		DisplayRefresh();
		F_DISP_P=1;
	}
	else
	{
		if(FreqInLWAM(Radio.Freq))
		{
			DispNum[0]='L';
			DispNum[1]='W';
			DispNum[2]=' ';
			DispNum[3]=' ';
		}
		else
		{
			DispNum[0]='M';
			DispNum[1]='W';
			DispNum[2]=' ';
			DispNum[3]=' ';
		}
		i=Radio.Freq;
		j=i%10;
		DispNum[7]=j;
		i=i/10;
		j=i%10;
		DispNum[6]=j;
		i=i/10;
		j=i%10;
		DispNum[5]=j;
		i=i/10;
		j=i%10;
		if(j==0)
			DispNum[4] = ' ';
		else
			DispNum[4]=j+48;
			
		DisplayRefresh();
		F_DISP_P=0;
	}
	
}


/*********************************************
	Function:		RadioSeek
	Description:	
	Write/Modify:	Perry.Liang
	Time:		2006-1-24- 15:38:27
*********************************************/
void RadioSeek(void)
{
	switch(Radio.SeekMode)
	{
		case RADIO_SEEK_IDLE:
			
			break;
		case RADIO_SEEK_INIT:
			Radio.SeekMode=RADIO_SEEK_CHANGE_FRE;
			
		case RADIO_SEEK_CHANGE_FRE:
			RadioSetFreq(Radio.ReqFreq);
			if(FreqInFM(Radio.Freq))
			{
				Wait10us(60);//wait for SMeter stable
				if(GetSMeter()>50)//(CheckSD(5,1000))
				{
					RadioWaitTimer=3;//wait for SSTOP in FM
					Radio.SeekMode=RADIO_SEEK_WAIT;
				}
				else
				{
					Radio.SeekMode=RADIO_SEEK_IDLE;
				}
				
			}
			else
			{
    				RadioWaitTimer=6;
    				Radio.SeekMode=RADIO_SEEK_AMFSU_WAIT;
			}
			break;
			
		case RADIO_SEEK_AMFSU_WAIT:
			if(RadioWaitTimer>0)break;
			if(GetSMeter()>30)
			{
				RadioWaitTimer=12;//wait for SSTOP in AM
				Radio.SeekMode=RADIO_SEEK_WAIT;
			}
			else
			{
				Radio.SeekMode=RADIO_SEEK_IDLE;
			}
			break;

		case RADIO_SEEK_WAIT:
			if(RadioWaitTimer>0)break;
			/*if(FreqInFM(Radio.Freq))
			{
				if (CheckIFC(50,1000))
					Radio.F_GoodStation=1;
			}
			else*/
			{
				if (CheckIFC(50,1000))
					Radio.F_GoodStation=1;
			}
   			Radio.SeekMode=RADIO_SEEK_IDLE;
			break;
			
		case RADIO_SEEK_CHECK:
			
			break;
		case RADIO_SEEK_GOOD_STATION:

			break;
		case RADIO_SEEK_BAD_STATION:
			
			break;
		
	}
	
}

/*********************************************
	Function:		RadioWork
	Description:	
	Write/Modify:	Perry.Liang
	Time:		2006-1-24- 15:38:25
*********************************************/
void RadioWork(void)
{
	unsigned char i,j;
	
	switch(Radio.WorkMode)
	{
		case RADIO_WORK_IDLE:
			if(System.DispMode.Current!=DISPMODE_RADIO)
				break;
				
			if(F_HalfSecondOut)
			{
				Radio.Smeter=GetSMeter();
				/*AniBuff[23]=Radio.Smeter/100+'0';
				i=Radio.Smeter%100;
				AniBuff[24]=i/10+'0';
				AniBuff[25]=i%10+'0';

				Radio.F_TunerDispReq=1;*/
			}
			break;
		case RADIO_WORK_SEEKREQ:
			//Radio.Band[Radio.CurrentBand].CurrentMem=0;
			Radio.F_TunerDispReq=1;
			Radio.WorkMode=RADIO_WORK_SEEKWAIT;
			Radio.BackupFreq=Radio.Freq;
			SeekOn();
			RadioMute(SOFTON);
			Radio.SeekMode=RADIO_SEEK_IDLE;
			//break;//!!!!!!!!
		case RADIO_WORK_SEEKWAIT:
			if(Radio.SeekMode!=RADIO_SEEK_IDLE)break;
			if(Radio.F_GoodStation)
			{
				Radio.F_GoodStation=0;
				if(FreqInFM(Radio.Freq)&&(RDS.F_AFEnable||RDS.F_TAEnable||RDS.F_PTYEnable||RDS.F_PISeek))
				{
					if(FreqInNormalFM(Radio.Freq))
					{
						if(Radio.Freq%10==0)
						{
							Radio.WorkMode=RADIO_WORK_SEEKWAITRDS;
							RadioWorkTimer10ms=25;
						}
						else
							Radio.WorkMode=RADIO_WORK_SEEKNEXT;
					}
					else
						Radio.WorkMode=RADIO_WORK_SEEKNEXT;
				}
				else
					Radio.WorkMode=RADIO_WORK_SEEKOK;
				break;
			}
		case RADIO_WORK_SEEKNEXT:
			Radio.ReqFreq=RadioFreqCal(Radio.SeekStep);
			Radio.SeekMode=RADIO_SEEK_INIT;
			Radio.WorkMode=RADIO_WORK_SEEKWAIT;
			if((Radio.BackupFreq==Radio.ReqFreq)
				||(Radio.BackupFreq==Radio.ReqFreq+5 && Radio.Direction==1)
				||(Radio.BackupFreq==Radio.ReqFreq-5 && Radio.Direction==-1))
			{
				Radio.SeekMode=RADIO_SEEK_IDLE;
				Radio.WorkMode=RADIO_WORK_SEEKOK;
				RadioSetFreq(Radio.BackupFreq);
				if(RDS.F_PTYEnable)
				{
				F_NoPTY=1;
				PTYSelectTimer=50;
				System.DispMode.Requst=DISPMODE_RDS;
				RDSDispMode=RDSDISP_PTYSELECT;
				}
			}

			//Radio.F_TunerDispReq=1;
			break;
		case RADIO_WORK_SEEKWAITRDS:
			if(RDS.F_RDSStation)
			{
				Radio.WorkMode=RADIO_WORK_SEEKWAITPI;
				RadioWorkTimer10ms=100;
				//Radio.WorkMode=RADIO_WORK_SEEKOK;
				break;
			}
			if(RadioWorkTimer10ms==0)
				Radio.WorkMode=RADIO_WORK_SEEKNEXT;
			break;
		case RADIO_WORK_SEEKWAITPI:
			if(RDS.F_GetNewPI)
			{
				if(RDS.F_TAEnable)
				{
					Radio.WorkMode=RADIO_WORK_SEEKWAITTP;
					RadioWorkTimer10ms=9;
				}
				else if(RDS.F_PTYEnable)
				{
					Radio.WorkMode=RADIO_WORK_SEEKWAITPTY;
					PTYSelectTimer=100;
					RadioWorkTimer10ms=9;
				}
				else if(RDS.F_PISeek)
				{
					if(((RDS.PI==RDS.PIBackup&&RDS.F_REGEnable)
						||((RDS.PI&0x00FF)==(RDS.PIBackup&0x00FF)&&!RDS.F_REGEnable))
						&& RDS.PI!=0)
					{
						Radio.WorkMode=RADIO_WORK_SEEKOK;
						RDS.F_PISeek=0;
					}
					else
					{
						Radio.WorkMode=RADIO_WORK_SEEKNEXT;
					}
				}
				else
					Radio.WorkMode=RADIO_WORK_SEEKOK;
				break;
			}
			if(RadioWorkTimer10ms==0)
				Radio.WorkMode=RADIO_WORK_SEEKNEXT;
			break;
		case RADIO_WORK_SEEKWAITTP:
			if(RDS.F_GetNewTP&&RDS.TP)
			{
				Radio.WorkMode=RADIO_WORK_SEEKOK;
				break;
			}
			if(RadioWorkTimer10ms==0)
				Radio.WorkMode=RADIO_WORK_SEEKNEXT;
			break;
		case RADIO_WORK_SEEKWAITPTY:
			if(RDS.F_GetNewPTY&&(RDS.PTY==PTYSelectType))
			{
				Radio.WorkMode=RADIO_WORK_SEEKOK;
				PTYSelectTimer=1;
				break;
			}
			if(RadioWorkTimer10ms==0)
				Radio.WorkMode=RADIO_WORK_SEEKNEXT;
			break;
		case RADIO_WORK_SEEKOK:
			RDS.F_PISeek=0;
			Radio.WorkMode=RADIO_WORK_IDLE;
			SeekOff();
			RadioMute(SOFTOFF);
			Radio.F_TunerDispReq=1;
			break;
		case RADIO_WORK_SEEKBREAK:
			RDS.F_PISeek=0;
			Radio.F_GoodStation=0;
			Radio.SeekMode=RADIO_SEEK_IDLE;
			Radio.WorkMode=RADIO_WORK_IDLE;
			SeekOff();
			RadioMute(SOFTOFF);
			Radio.F_TunerDispReq=1;
			break;

		case RADIO_WORK_PSREQ://display the each preset memory frequency during 5 seconds
			Radio.WorkMode=RADIO_WORK_PSWAIT;
			Radio.Band[Radio.CurrentBand].CurrentMem=0;
			RadioWorkTimer=0;
			break;
		case RADIO_WORK_PSWAIT:
			if(RadioWorkTimer>0)break;
			RadioWorkTimer=50;
			if(Radio.Band[Radio.CurrentBand].CurrentMem==6)
			{
				Radio.Band[Radio.CurrentBand].CurrentMem=1;
				Radio.WorkMode=RADIO_WORK_PSEND;
			}
			else
				Radio.Band[Radio.CurrentBand].CurrentMem++;
			BreakAFCheck();
			RadioMute(SOFTON);
			RadioSetFreq(Radio.Band[Radio.CurrentBand].MemFreq[Radio.Band[Radio.CurrentBand].CurrentMem-1]);
			RadioMute(SOFTOFF);
			System.DispMode.Requst=DISPMODE_RADIO;
			RDSDispMode=RDSDISP_IDLE;
			break;
		case RADIO_WORK_PSEND:
			RadioWorkTimer=0;
			Radio.WorkMode=RADIO_WORK_IDLE;
			break;
		case RADIO_WORK_ASPSBREAK:
			Radio.SeekMode=RADIO_SEEK_IDLE;
			Radio.WorkMode=RADIO_WORK_IDLE;
			SeekOff();
			RadioMute(SOFTOFF);
			RadioWorkTimer=0;
			Radio.F_TunerDispReq=1;
			break;

		case RADIO_WORK_ASREQ:
			if(FreqInFM(Radio.Freq)&&Radio.Area==AREA_OIRT)
				Radio.BackupFreq=Area[AREA_OIRT].FMMinFreqOirt;
			else
				Radio.BackupFreq=Radio.MinFreq;
			Radio.ReqFreq=Radio.BackupFreq;
			RadioSetFreq(Radio.ReqFreq);
			Radio.Direction=1;
			for(i=0;i<6;i++)
			{
				Radio.Band[Radio.CurrentBand].MemFreq[i]=Radio.BackupFreq;
				Radio.Band[Radio.CurrentBand].MemSmeter[i]=0;
				Radio.Band[Radio.CurrentBand].MemAFNum[i]=0;
				for(j=0;j<8;j++)
					Radio.Band[Radio.CurrentBand].MemAFList[i][j]=0xFF;
			}
			SeekOn();
			RadioMute(SOFTON);
			Radio.WorkMode=RADIO_WORK_ASWAIT;
			TempPresetNum=0;
			Radio.F_TunerDispReq=1;
			break;
		case RADIO_WORK_ASWAIT:
			if(Radio.SeekMode!=RADIO_SEEK_IDLE)break;
			if(Radio.F_GoodStation)
			{
				Radio.F_GoodStation=0;
				if((FreqInFM(Radio.Freq))&&(RDS.F_AFEnable||RDS.F_TAEnable))
				{
					Radio.WorkMode=RADIO_WORK_ASWAITRDS;
					RadioWorkTimer10ms=25;
					break;
				}
				else
					PresetOrder();
			}
		case RADIO_WORK_ASNEXT:
			Radio.ReqFreq=RadioFreqCal(Radio.SeekStep);
			Radio.SeekMode=RADIO_SEEK_INIT;
			Radio.WorkMode=RADIO_WORK_ASWAIT;
			if(Radio.ReqFreq==Radio.BackupFreq)
			{
				Radio.SeekMode=RADIO_SEEK_IDLE;
				Radio.WorkMode=RADIO_WORK_ASEND;
			}
			break;

		case RADIO_WORK_ASWAITRDS:
			if(RDS.F_RDSStation)
			{
				Radio.WorkMode=RADIO_WORK_ASWAITPI;
				RadioWorkTimer10ms=100;
				break;
			}
			if(RadioWorkTimer10ms==0)
				Radio.WorkMode=RADIO_WORK_ASNEXT;
			break;

		case RADIO_WORK_ASWAITPI:
			if(RDS.F_GetNewPI)
			{
				for(i=0,j=0;i<TempPresetNum;i++)
				{
					if(RDS.PI==Radio.Band[Radio.CurrentBand].PI[i])
					{
						j=1;
						break;
					}
				}
				if(j)
				{
					Radio.WorkMode=RADIO_WORK_ASNEXT;
				}
				else
				{
					Radio.WorkMode=RADIO_WORK_ASWAITAFLIST;
					RadioWorkTimer10ms=250;
				}
				break;
			}
			if(RadioWorkTimer10ms==0)
				Radio.WorkMode=RADIO_WORK_ASNEXT;
			break;
			
		case RADIO_WORK_ASWAITAFLIST:
			if(RDS.F_GetAFList)
			{
				PresetOrder();
				Radio.WorkMode=RADIO_WORK_ASNEXT;
				break;
			}
			if(RadioWorkTimer10ms==0)
				Radio.WorkMode=RADIO_WORK_ASNEXT;
			break;
			
		case RADIO_WORK_ASEND:
			//for(i=0;i<TempPresetNum;i++)
			//	Radio.Band[Radio.CurrentBand].MemFreq[i]=TempPreset[i].Freq;
			SeekOff();
			RadioMute(SOFTOFF);
			Radio.WorkMode=RADIO_WORK_PSREQ;
			break;
			
	}
	
}

/*********************************************
	Function:		RadioSetFreq
	Description:	
	Write/Modify:	Perry.Liang
	Time:		2006-1-24- 15:38:24
*********************************************/
void RadioSetFreq(unsigned int setfreq)
{
	unsigned int pc;
	unsigned char i,start,end;