lgxx1d.c

来自「DVB软件,基于CT216软件的开发源程序.」· C语言 代码 · 共 340 行

#include <string.h>
#include "ct_sys.h"
#include "ct_iic.h"
#include "ct_nim.h"
#include "LGXX1D.h"

//#define IIC_UART
#define TUNER_ADD   	0xC0
//static u8 szBuffer[8];
#if 0
#ifdef IIC_UART
/*******************************************************************************************/
bool8 Tuner_Write(u8 *pu8Buffer , u8 u8Length)
{
    if ((pu8Buffer == NULL)||
        (u8Length > MAX_IIC_BURST_LENGTH)||
        (u8Length==0))
    {        
        return FALSE;
    }

    if ( IIC2UART_Write(TUNER_ADD, *pu8Buffer, (pu8Buffer+1), (u8Length-1)) == FALSE )
	{		    
	    return FALSE;
	}
    return TRUE;
}
/*******************************************************************************************/
bool8 Tuner_Read(u8 *pu8Buffer, u8 u8Length)
{
    if ((pu8Buffer == NULL)||(u8Length > MAX_IIC_BURST_LENGTH))
    {
        return FALSE;
    }    
    
	if ( IIC2UART_Read(TUNER_ADD, 0, pu8Buffer, u8Length, FALSE) == FALSE )
	{
	    return FALSE;
	}

    return TRUE;
}
#else
/*******************************************************************************************/
bool8 Tuner_Write(u8 *pu8Buffer , u8 u8Length)
{
    u32 u32Handle;	
    
	if (CT_NIM_GetBus() == EN_CT_NIM_BUS_0)
	{
		if( CT_IIC_Open(EN_CT_IIC_BUS_0, TUNER_ADD, &u32Handle)!= DRV_OK)
		{		
			printf("\nCT_IIC_Open 0 Error");
	        return FALSE;
	    }
	}
	else
	{
		if( CT_IIC_Open(EN_CT_IIC_BUS_1, TUNER_ADD, &u32Handle)!= DRV_OK)
		{		
			printf("\nCT_IIC_Open 1 Error");
	        return FALSE;
	    }		
	}
#ifdef NIM_SW_IIC
	if(CT_SW_IIC_WriteData(u32Handle, pu8Buffer, u8Length) != DRV_OK )
#else
	if(CT_IIC_WriteData(u32Handle, pu8Buffer, u8Length) != DRV_OK )
#endif
	{		
		printf("\nCT_IIC_WriteData Error");
		CT_IIC_Close(u32Handle);
		return(FALSE);
	}
	
	CT_IIC_Close(u32Handle);
	return (TRUE);     
}
/*******************************************************************************************/
bool8 Tuner_Read(u8 *pu8Buffer, u8 u8Length)
{    
    u32 u32Handle;
		
	if (CT_NIM_GetBus() == EN_CT_NIM_BUS_0)
	{
		if( CT_IIC_Open(EN_CT_IIC_BUS_0, TUNER_ADD, &u32Handle)!= DRV_OK)
		{
			printf("\nR CT_IIC_Open 0 Error");
        	return FALSE;
        }
	}
	else
	{
		if( CT_IIC_Open(EN_CT_IIC_BUS_1, TUNER_ADD, &u32Handle)!= DRV_OK)
		{
			printf("\nR CT_IIC_Open 1 Error");
        	return FALSE;		
        }
	}

#ifdef NIM_SW_IIC
	if(CT_SW_IIC_ReadData(u32Handle, pu8Buffer, u8Length) != DRV_OK )
#else
	if(CT_IIC_ReadData(u32Handle, pu8Buffer, u8Length) != DRV_OK )
#endif
	{
		printf("\nR CT_IIC_ReadData Error");
		CT_IIC_Close(u32Handle);		
		return FALSE;
	}
	
	CT_IIC_Close(u32Handle);
	return (TRUE) ;
}
#endif
#endif
/*******************************************************************************
 * Program LG252D tuner
 *******************************************************************************/
bool8 CT221_ProgramTuner_LGXX1D(u32 RfFreq, u8 dwBWandFreqkHz)
{
#if 1
	unsigned int N;
	u8 WriteBytes[5];
	float TunerFreq;
	u8    status;
	u8    TUNER_ID      = 0xc0;
	u8 ByteMask = 0xff;
	unsigned int NMask = 0x7fff;
	unsigned int ByteShift = 8;

	TunerFreq = RfFreq / 1000.0;

	// Calculate divider N with step size = 166.67 kHz.
	N = (unsigned int)(TunerFreq * 6 + 217 + 0.5);
	N &= NMask;

	//printf("\n\r LG252D freq %ld", (u32)(TunerFreq * 1000));		

	// Set divider byte 1 and 2.
	//   - Note: Divider byte 1 is WriteBytes[0].
	//           Divider byte 2 is WriteBytes[1].
	WriteBytes[0] = N >> ByteShift & ByteMask;
	WriteBytes[1] = N & ByteMask;

	// Set control byte and band switch byte.
	//   - Note: Control byte is WriteBytes[2].
	//           Band switch byte is WriteBytes[3].
	//WriteBytes[2] = 0x90;
	WriteBytes[2] = 0x80 | (0x04<<3); //TOP=103

	/* ------------- UHF -----------------*/
	if (TunerFreq > 700 && TunerFreq <= 862)
		WriteBytes[3] = 0xc8;
	else if(TunerFreq > 430 && TunerFreq <= 700)
		WriteBytes[3] = 0x88;   //  10 | 0|1 |1000
	/* ------------- VHF High -----------------*/
	else if(TunerFreq > 300 && TunerFreq <= 430)
		WriteBytes[3] = 0xc2;
	else if(TunerFreq > 145 && TunerFreq <= 300)
		WriteBytes[3] = 0x82;
	/* ------------- VHF Low -----------------*/
	else if(TunerFreq > 100 && TunerFreq <= 145)
		WriteBytes[3] = 0xc1;
	else if(TunerFreq <= 100)
		WriteBytes[3] = 0x81;
	else
		WriteBytes[3] = 0x81;

	if (dwBWandFreqkHz != 8)
		WriteBytes[3] &= ~0x10;
	else
		WriteBytes[3] |= 0x10;

	// Set auxiliary byte.
	//   - Note: Auxiliary byte is WriteBytes[4].
	WriteBytes[4] = 0xc3;  // 11 00 0010

	status = Tuner_Write(&WriteBytes[0],5);
	//status = RegWrite(TUNER_ID, WriteBytes[0], &WriteBytes[1], 4);
	return TRUE; 	       
#else	
   	u8 status;
   	u8 data[6];
   	u8 ab;
   	long  maincounter;   	   	
   	float TunerFreq;
   	float if_freq = 36.167;
   	float stepsize = 166.67;
   	u8    if_out_level = 106;//112, 109, 106, 103, 100, 97, 94
   	
   
   	TunerFreq = RfFreq / 1000.0;
   
   	//Tuner Address	
   	data[0] = TUNER_ADD;	
	
	maincounter = (long)((TunerFreq+if_freq)/(stepsize*0.001) + 0.5);

	// Divider Byte 1 & 2
	data[1] = (u8)((maincounter>>8)&0x007f);
	data[2] = (u8)(maincounter&0x00ff);
 
	// Control Byte 1
	data[3] = 0x80;
	
	//Rf AGC current set bit(ATC)
	//data[5] = 0xc0;//Enable XTALOUT 4MHz output
	data[5] = 0xc1;//Disable XTALOUT 4MHz output
	
	//Time Constant
	data[5] |= 0x00;//300nA
	//data[5] |= 0x20;//15uA
	
	ab = data[3];
	
	if(if_out_level == 112) 
	{
		data[5] |= 0x02; 
		ab      |= 0x00;
	}
	else if(if_out_level == 109) 
	{
		data[5] |= 0x02; 
		ab      |= 0x08;
	} 
	else if(if_out_level == 106) 
	{
		data[5] |= 0x02; 
		ab      |= 0x10;
	}
	else if(if_out_level == 103) 
	{
		data[5] |= 0x02; 
		ab      |= 0x18;
	}  
	else if(if_out_level == 100) 
	{
		data[5] |= 0x02; 
		ab      |= 0x20;
	} 
	else if(if_out_level == 97) 
	{
		data[5] |= 0x02; 
		ab      |= 0x28;
	}
	else if(if_out_level == 94) 
	{
		data[5] |= 0x02; 
		ab      |=0x30;
	}
	else                  
	{
		data[5] |= 0x02; 
		ab      |= 0x38;
	}
	
	data[3] = ab;
		
	//Reference Divider Ratio bit set[**** * RS2 RS1 RS0]	
	if(stepsize == 166.67)
		data[3] |= 0x00;//166.67KHz
	else if(stepsize == 142.85)	
		data[3] |= 0x01;//142.85KHz
	else if (stepsize == 80) 
		data[3] |= 0x02;//80KHz
	else if(stepsize == 62.5) 
		data[3] |= 0x03;//62.5KHz
	else if(stepsize == 31.25) 			
		data[3] |= 0x04;//31.25KHz
	else 
		data[3] |= 0x05;//50KHz 
		
	// Band-switch Byte 
	data[4] = 0x00;
	
	// Charge Pump current set bit[CP1 CP0 ** ****]
	if(TunerFreq <= 100.0)      
	{
		data[4] |= 0x80;	
	} 
	else if(TunerFreq <= 145.0) 
	{
		data[4] |= 0xC0;	
	}
	else if(TunerFreq <= 300.0) 
	{
		data[4] |= 0x80;
	}
	else if(TunerFreq <= 430.0) 
	{
		data[4] |= 0xC0;
	}
	else if(TunerFreq <= 700.0) 
	{
		data[4] |= 0x80;
	}
	else                    
	{
		data[4] |= 0xc0;
	} 
	
	// Band selection set[Port control set : *** P5  BS4 BS3 BS2 BS1]	
	if(TunerFreq < 149.5) 
		data[4] |= 0x01;//VHF LOW[BS1]
	else if(TunerFreq < 434.0) 
		data[4] |= 0x02;//VHF HIGH[BS2]
	else 
		data[4] |= 0x18;//UHF[P5 BS4]
	
	//RF AGC detector input selection bit
	data[4] |= 0x20;//IF amplifier
	//data[4] &= ~(0x20);//Mixer output

	// Control Byte 2
	//ATC settings
	//data[5] |= 0x10;	//search mode
	data[5] &= ~(0x10);	//normal mode

	//Power Standby mode-control bit	

	//data[5] |= 0x01;		//Standby mode	
	data[5] &= (~(0x01));	//Normal mode

		
	/* I2C Data Write Sequences[07.02.24. By csd]
	1. Start-ADB-DB1-DB1-CB1-BB-CB2-Stop ==> COM.I2cReadWrite(WRITE,*data, &data[1],5);
	2. Start-ADB-DB1-CB1-Stop. Start-ADB-DB1-BB--CB2-Stop
	   ==> COM.I2cReadWrite(WRITE,*data, &data[1],2);
	       Sleep(50);
	       COM.I2cReadWrite(WRITE,*data, &data[3],3);
	       Sleep(10);
	3. Both write sequences is ok!!  */
	
	Tuner_Write(&data[1],5);

	return TRUE; 	
#endif	
}