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📄 radio.c

📁 7541数字高频头源程序
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1234 
		//Weather band disable
		Radio.TunerBuff[11]=(Radio.TunerBuff[11]&0x0fd)|TDA7541_WB_DISABLE;

		//IF gain and Q
		//Radio.TunerBuff[14]=(Radio.TunerBuff[14]&0x0F)|TDA7541_IF2Q_NOR_AMQ28_FMQ28|TDA7541_IF2_GAIN_9;

		//STD vco
		//Radio.TunerBuff[23]=(Radio.TunerBuff[23]&0xdf)|TDA7541_STD_VCO_OFF;
		
		//SSTOP threshold---!!!Cutomer can adjust this threshold to adapt their own seek sensitivity requirment
		/*if(Radio.F_LocDx)
			Radio.TunerBuff[10]= (Radio.TunerBuff[10]&0x0F)|TDA7541_SSTOP_IFC_FM1_3_AM2_3; 
		else
			Radio.TunerBuff[10]= (Radio.TunerBuff[10]&0x0F)|TDA7541_SSTOP_IFC_FM0_7_AM1_4;
		*/
		if(start>4)start=4;
		if(end<25)end=25;
	}
	
	RadioTunerSend(start,end);
	Radio.F_ForceSetBuff=0;
#endif
	
	if((FreqInNormalFM(setfreq)&&(!FreqInNormalFM(Radio.Freq)))||(FreqInJapanFM(setfreq)&&(!FreqInJapanFM(Radio.Freq))))
	{
		Radio.MaxFreq=Area[Radio.Area].FMMaxFreq;
		Radio.MinFreq=Area[Radio.Area].FMMinFreq;
		Radio.Step=Area[Radio.Area].FMStep;
		Radio.SeekStep=Area[Radio.Area].FMSeekStep;
	}
	else if(FreqInOirtFM(setfreq)&&(!FreqInOirtFM(Radio.Freq)))
	{
		Radio.MaxFreq=Area[AREA_OIRT].FMMaxFreqOirt;
		Radio.MinFreq=Area[AREA_OIRT].FMMinFreqOirt;
		Radio.Step=Area[AREA_OIRT].FMStepOirt;
		Radio.SeekStep=Radio.Step;
	}
	else if(FreqInMWAM(setfreq)&&(!FreqInMWAM(Radio.Freq)))
	{
		Radio.MaxFreq=Area[Radio.Area].AMMaxFreqMW;
		Radio.MinFreq=Area[Radio.Area].AMMinFreqMW;
		Radio.Step=Area[Radio.Area].AMStepMW;
		Radio.SeekStep=Radio.Step;
	}
	else if(FreqInLWAM(setfreq)&&(!FreqInLWAM(Radio.Freq)))
	{
		Radio.MaxFreq=Area[Radio.Area].AMMaxFreqLW;
		Radio.MinFreq=Area[Radio.Area].AMMinFreqLW;
		Radio.Step=Area[Radio.Area].AMStepLW;
		Radio.SeekStep=Radio.Step;
	}
	else if(FreqInWBFM(setfreq)&&(!FreqInWBFM(Radio.Freq)))
	{
		Radio.MaxFreq=Area[Radio.Area].FMMaxFreqWB;
		Radio.MinFreq=Area[Radio.Area].FMMinFreqWB;
		Radio.Step=Area[Radio.Area].FMStepWB;
		Radio.SeekStep=Radio.Step;
	}

	Radio.Freq=setfreq;
	Radio.Band[Radio.CurrentBand].BandFreq=Radio.Freq;
	
	if(!RADIO_IN_PS)
	{
		for(i=0;i<6;i++)
		{
			if(Radio.Freq==Radio.Band[Radio.CurrentBand].MemFreq[i])
			{
				Radio.Band[Radio.CurrentBand].CurrentMem=i+1;
				break;
			}
			if(i==5)Radio.Band[Radio.CurrentBand].CurrentMem=0;
		}
	}

	RDSDataInit();

	if(RDSDispMode!=RDSDISP_PTYSELECT)
		RDSDispMode=RDSDISP_IDLE;
}

unsigned int  RadioFreqCal(unsigned char step)
{
	unsigned int inputfreq;
	if(Radio.Area==AREA_OIRT && FreqInFM(Radio.Freq))
	{
		if(Radio.Direction>0)
		{
			inputfreq=Radio.Freq+step;
			if(inputfreq>Area[AREA_OIRT].FMMaxFreqOirt && inputfreq<Area[AREA_OIRT].FMMinFreq)
				inputfreq=Area[AREA_OIRT].FMMinFreq;
			else if(inputfreq>Area[AREA_OIRT].FMMaxFreq)
				inputfreq=Area[AREA_OIRT].FMMinFreqOirt;
		}
		else
		{
			inputfreq=Radio.Freq-step;
			if(inputfreq>Area[AREA_OIRT].FMMaxFreqOirt && inputfreq<Area[AREA_OIRT].FMMinFreq)
				inputfreq=Area[AREA_OIRT].FMMaxFreqOirt;
			else if(inputfreq<Area[AREA_OIRT].FMMinFreqOirt)
				inputfreq=Area[AREA_OIRT].FMMaxFreq;
		}
	}
	else
	{
		if(Radio.Direction>0)
		{
			if(Radio.Freq%10==5 && FreqInFM(Radio.Freq)&&!FreqInWBFM(Radio.Freq))
				inputfreq=Radio.Freq+5;//avoid the frequency(87.55,89.55...) at first time 
			else
				inputfreq=Radio.Freq+step;
			if(inputfreq>Radio.MaxFreq)
				inputfreq=Radio.MinFreq;
		}
		else
		{
			if(Radio.Freq%10==5 && FreqInFM(Radio.Freq)&&!FreqInWBFM(Radio.Freq))
				inputfreq=Radio.Freq-5;
			else
				inputfreq=Radio.Freq-step;
			if(inputfreq<Radio.MinFreq)
				inputfreq=Radio.MaxFreq;
		}
	}
	return(inputfreq);
}

void RadioSave(unsigned char pos)
{
	unsigned char i;
	if((Radio.WorkMode&0xF0)==RADIO_WORK_ASPSMODE)
		Radio.WorkMode=RADIO_WORK_ASPSBREAK;
	Radio.Band[Radio.CurrentBand].CurrentMem=pos+1;
	Radio.Band[Radio.CurrentBand].MemFreq[pos]=Radio.Freq;

	if(RDS.AFNum>1)
	{
		Radio.Band[Radio.CurrentBand].PI[pos]=RDS.PI;
		Radio.Band[Radio.CurrentBand].MemAFNum[pos]=RDS.AFNum;
		for(i=0;i<8;i++)
			Radio.Band[Radio.CurrentBand].MemAFList[pos][i]=RDS.AF[i];
		
	}
	Radio.F_TunerDispReq=1;
	RDSDispTimer=1;//fixed for RDS PS display by yete at Sep 20,2006
}

void RadioLoad(unsigned char pos)
{
	unsigned char i;
	if((Radio.WorkMode&0xF0)==RADIO_WORK_ASPSMODE)
		Radio.WorkMode=RADIO_WORK_ASPSBREAK;
	RadioMute(SOFTON);
	RadioSetFreq(Radio.Band[Radio.CurrentBand].MemFreq[pos]);
	RadioMute(SOFTOFF);
	Radio.Band[Radio.CurrentBand].CurrentMem=pos+1;
	
	if(RDS.F_AFEnable||RDS.F_TAEnable)
	{
		RDS.PI=Radio.Band[Radio.CurrentBand].PI[pos];
		RDS.AFNum=Radio.Band[Radio.CurrentBand].MemAFNum[pos];
		for(i=0;i<8;i++)
			RDS.AF[i]=Radio.Band[Radio.CurrentBand].MemAFList[pos][i];
		if(RDS.AFNum>1)
		{
			SetAFSearch();
		}
	}
	Radio.F_TunerDispReq=1;
}

void SeekOn(void)
{
#if TDA7540Tuner
	//seek on (ISS time constant)
	Radio.TunerBuff[0] |= 0x80;	
	RadioTunerSend(0,0);
	
	// AM
	Radio.TunerBuff[7] |= 0x01;
	RadioTunerSend(7,7);
	// enable IFC
  	Radio.TunerBuff[5] |= 0x08;
   	RadioTunerSend(5,5);

	/*if(FreqInFM(Radio.Freq))
	{
		Radio.TunerBuff[18] &= y11000000;
		Radio.TunerBuff[18] += y00100000;
		RadioTunerSend(18,18);
	}
	else
	{
		Radio.TunerBuff[18] &= y11000000;
		Radio.TunerBuff[18] += y00001111;
		RadioTunerSend(18,18);
	}*/////not fixed Slider in software---modified on April 24,2006
	BreakAFCheck();
#endif

#if TDA7541Tuner
	//seek on (ISS time constant)
	Radio.TunerBuff[0] =(Radio.TunerBuff[0]&0x7f)|TDA7541_SEEK_ON;
	RadioTunerSend(0,0);
	//No enable/disable IFC in TDA7541
	//Set FSW offset to off, based on this to adjust seek sensitivity according customer spec.
	//SaveFSWOffset=Radio.TunerBuff[16];
	//Radio.TunerBuff[16]=(Radio.TunerBuff[16]&0x3f);//FSW offset off
	//RadioTunerSend(16,16);
	BreakAFCheck();
#endif
}

void SeekOff(void)
{
#if TDA7540Tuner
	// seek off
	// FM
	Radio.TunerBuff[0] &= 0x7F;
	RadioTunerSend(0,0);
	//Disable IFC
	//Radio.TunerBuff[5] &= 0xf7;
   	//RadioTunerSend(5,5);
	//Normal AGC time constant
	Radio.TunerBuff[7] &= 0xFE;
	RadioTunerSend(7,7);
	//Return back to original slider
	//Radio.TunerBuff[18]=SaveSmeterSlider; 
	//RadioTunerSend(18,18);
#endif
#if TDA7541Tuner
	//seek on (ISS time constant)
	Radio.TunerBuff[0] =(Radio.TunerBuff[0]&0x7f)|TDA7541_SEEK_OFF;
	RadioTunerSend(0,0);
	//No need to enable/disable IFC
	//HAVE TO return back to FSW offset because this related to radio performance.
	//Radio.TunerBuff[16]=SaveFSWOffset; 
	//RadioTunerSend(16,16);

	BreakAFCheck();
#endif
}

void RadioMute(unsigned char type)
{
	AudioMute(type);
}

void PresetOrder(void)
{
	unsigned char i,j;
	if(TempPresetNum<6)
	{
		Radio.Band[Radio.CurrentBand].MemFreq[TempPresetNum]=Radio.Freq;
		Radio.Band[Radio.CurrentBand].MemSmeter[TempPresetNum]=GetSMeter();
		if(RDS.F_AFEnable)
		{
			Radio.Band[Radio.CurrentBand].PI[TempPresetNum]=RDS.PI;
			Radio.Band[Radio.CurrentBand].MemAFNum[TempPresetNum]=RDS.AFNum;
			for(j=0;j<8;j++)
				Radio.Band[Radio.CurrentBand].MemAFList[TempPresetNum][j]=RDS.AF[j];
		}
		TempPresetNum++;
	}
	else
	{
		TempPresetSMMin=0xFF;
		for(i=0;i<6;i++)
		{
			if(TempPresetSMMin>Radio.Band[Radio.CurrentBand].MemSmeter[i])
			{
				TempPresetSMMin=Radio.Band[Radio.CurrentBand].MemSmeter[i];
				TempPresetSMMinNum=i;
			}
		}
		if(GetSMeter()>TempPresetSMMin)
		{
			for(i=TempPresetSMMinNum;i<5;i++)
			{
				Radio.Band[Radio.CurrentBand].MemFreq[i]=Radio.Band[Radio.CurrentBand].MemFreq[i+1];
				Radio.Band[Radio.CurrentBand].MemSmeter[i]=Radio.Band[Radio.CurrentBand].MemSmeter[i+1];
				if(RDS.F_AFEnable)
				{
					Radio.Band[Radio.CurrentBand].PI[i]=Radio.Band[Radio.CurrentBand].PI[i+1];
					Radio.Band[Radio.CurrentBand].MemAFNum[i]=Radio.Band[Radio.CurrentBand].MemAFNum[i+1];
					for(j=0;j<8;j++)
						Radio.Band[Radio.CurrentBand].MemAFList[i][j]=Radio.Band[Radio.CurrentBand].MemAFList[i+1][j];
				}
			}
			Radio.Band[Radio.CurrentBand].MemFreq[5]=Radio.Freq;
			Radio.Band[Radio.CurrentBand].MemSmeter[5]=GetSMeter();
			if(RDS.F_AFEnable)
			{
				Radio.Band[Radio.CurrentBand].PI[5]=RDS.PI;
				Radio.Band[Radio.CurrentBand].MemAFNum[5]=RDS.AFNum;
				for(j=0;j<8;j++)
					Radio.Band[Radio.CurrentBand].MemAFList[5][j]=RDS.AF[j];
			}
		}

	}
}

void RadioTunerSend(unsigned char start, unsigned char end)
{
	unsigned char i;
  	I2CStart ();
  	I2COut8Bit(0xC4);
  	if(start==end)
		I2COut8Bit(start);
	else
		#if TDA7540Tuner
		I2COut8Bit(start+0x40);
		#endif
		#if TDA7541Tuner//Page mode bit change: Yete June-22-2007
		I2COut8Bit(start+0x20);
		#endif	
		for (i=start;i<=end; i++)
		I2COut8Bit(Radio.TunerBuff[i]);
	I2CStop();
}

void RadioTunerRead(void)
{
	unsigned char i;
  	I2CStart ();
  	I2COut8Bit(0xC5);
  	Radio.ReadBuff.byte=I2CIn8Bit();
	I2CNAck();
	I2CStop();
}

/*********************************************
	Function:		Radio_PLL_FMISet
	Description:	
	Write/Modify:	Yete
	Time:		2006-06-02
*********************************************/
unsigned char Radio_PLL_FMISet(unsigned int FMfreq)
{
#if TDA7540Tuner


	if(FreqInOirtFM(FMfreq))//ORIT
	{
		if (FMfreq < FM67_0MHZ)
		{
			return (PLL_HICURRENT_2_5mA);
		}
		if (FMfreq < FM71_0MHZ)
		{
			return (PLL_HICURRENT_3MA);
		}
		return (PLL_HICURRENT_3_5mA);
	}
	else if(FreqInJapanFM(FMfreq))//Japan
	{
		if (FMfreq < FM80_0MHZ)
		{
			return (PLL_HICURRENT_1_5mA);
		}
		if (FMfreq < FM85_0MHZ)
		{
			return (PLL_HICURRENT_2MA);
		}
		return (PLL_HICURRENT_3MA);
	}
	if(FreqInWBFM(FMfreq))//Weather band
	{
		return (PLL_HICURRENT_0_5mA);
	}	
	else//Normal FM
	{
		if (FMfreq < FM94_5MHZ)
		{
			return (PLL_HICURRENT_1_5mA);
		}
		if (FMfreq < FM98_6MHZ)
		{
			return (PLL_HICURRENT_2_5mA);
		}
		if (FMfreq < FM106_9MHZ)
		{
			 return (PLL_HICURRENT_3MA);
		}
		return (PLL_HICURRENT_3_5mA);
	}	

#endif

#if TDA7541Tuner

	if(FreqInOirtFM(FMfreq))//ORIT
	{
		if (FMfreq < FM67_0MHZ)
		{
			return (TDA7541_PLL_HICURRENT_2_5mA);
		}
		if (FMfreq < FM71_0MHZ)
		{
			return (TDA7541_PLL_HICURRENT_3MA);
		}
		return (TDA7541_PLL_HICURRENT_3_5mA);
	}
	else if(FreqInJapanFM(FMfreq))//Japan
	{
		if (FMfreq < FM80_0MHZ)
		{
			return (TDA7541_PLL_HICURRENT_1_5mA);
		}
		if (FMfreq < FM85_0MHZ)
		{
			return (TDA7541_PLL_HICURRENT_2MA);
		}
		return (TDA7541_PLL_HICURRENT_3MA);
	}
	if(FreqInWBFM(FMfreq))//Weather band
	{
		return (TDA7541_PLL_HICURRENT_0_5mA);
	}	
	else//Normal FM
	{
		if (FMfreq < FM94_5MHZ)
		{
			return (TDA7541_PLL_HICURRENT_1_5mA);
		}
		if (FMfreq < FM98_6MHZ)
		{
			return (TDA7541_PLL_HICURRENT_2_5mA);
		}
		if (FMfreq < FM106_9MHZ)
		{
			 return (TDA7541_PLL_HICURRENT_3MA);
		}
		return (TDA7541_PLL_HICURRENT_3_5mA);
	}	

#endif

}

/*********************************************
	Function:		Radio_PLL_AMISet
	Description:	
	Write/Modify:	Yete
	Time:		2006-06-02
*********************************************/
unsigned char Radio_PLL_AMISet(unsigned int AMfreq)
{
#if TDA7540Tuner



	if (AMfreq < AM530KHZ)//LW
	{
		return (PLL_HICURRENT_2MA);
	}
	if (AMfreq < AM999KHZ)//MW
	{
		return (PLL_HICURRENT_2_5mA);
	}
	if (AMfreq < AM1404KHZ)
	{
		return (PLL_HICURRENT_3MA);
	}
	return (PLL_HICURRENT_3_5mA);

#endif

#if TDA7541Tuner


	if (AMfreq < AM530KHZ)//LW
	{
		return (TDA7541_PLL_HICURRENT_2MA);
	}
	if (AMfreq < AM999KHZ)//MW
	{
		return (TDA7541_PLL_HICURRENT_2_5mA);
	}
	if (AMfreq < AM1404KHZ)
	{
		return (TDA7541_PLL_HICURRENT_3MA);
	}
	return (TDA7541_PLL_HICURRENT_3_5mA);

#endif

}

/*********************************************
	Function:		Radio10msTimer
	Description:	
	Write/Modify:	Perry.Liang
	Time:		2006-1-24- 15:38:09
*********************************************/
void Radio10msTimer(void)
{
	if(RadioWaitTimer>0)RadioWaitTimer--;
	if(RadioWorkTimer10ms>0)RadioWorkTimer10ms--;
	
}

void Radio100msTimer(void)
{
	if(RadioWorkTimer>0)RadioWorkTimer--;
	if(AFTAShowTimer>1)AFTAShowTimer--;
	if(SeekKeyTimer>0)SeekKeyTimer--;
	if(RadioTunerEepromTimer>0)RadioTunerEepromTimer--;
}
1234

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