dtt8d1c.c

来自「DVB软件,基于CT216软件的开发源程序.」· C语言 代码 · 共 205 行

#include <stdio.h>
#include "ct_os.h"
#include "ct_sys.h"
#include "ct_iic.h"
#include "ct_nim.h"
#include "DTT8D1C.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("\n%s <==== IIC\n", __FUNCTION__);
		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 DTT8D1C(heifei radio) tuner
 *******************************************************************************/
bool8 CT221_ProgramTuner_DTT8D1C(u32 RfFreq, u8 dwBWandFreqkHz)
{
	unsigned int N;
	u8           WriteBytes[6];
	float        TunerFreq;
	u8           status;
//	u8           TUNER_ID  = 0xc0;
	u8           ByteMask  = 0xff;
	unsigned int NMask     = 0x7fff;
	unsigned int ByteShift = 8;
    u32          u32Fosc   = 0;
	TunerFreq = (RfFreq) / 1000.0;

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

#if 0
    printf("TF=%f, RF=%ld\n", TunerFreq, RfFreq);
    printf("Fosc=%ld\n", RfFreq + 36125);
    printf("N=%ld\n", ((RfFreq + 36125)*100) / 16667);
    printf("DT04 N=%ld\n", N);
#endif

	// 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].
	if (TunerFreq >= 830)
	{
		WriteBytes[2] = 0xfc; // cp=650
	}
	else if((TunerFreq >= 646 && TunerFreq < 830) ||
            (TunerFreq >= 366 && TunerFreq < 484) ||
            (TunerFreq >= 180 && TunerFreq < 197)) 
	{
		WriteBytes[2] = 0xf4; // cp=250

             
	}    
	else if((TunerFreq >= 484 && TunerFreq < 646) ||         
            (TunerFreq >= 197 && TunerFreq < 366) ||
            (TunerFreq >= 84 && TunerFreq < 180)) 
	{
		WriteBytes[2] = 0xbc; // cp=125
	}	
    
    
	if(TunerFreq >= 447) 
	{
		WriteBytes[3] = 0x04;
	//	WriteBytes[3] = 0x0c;
	}	
	else if(TunerFreq >= 161) 
	{
		WriteBytes[3] = 0x02;
	//	WriteBytes[3] = 0x0a;
	}	
	else
        WriteBytes[3] = 0x01;
    //    WriteBytes[3] = 0x09;
    
 //
 //   if (dwBWandFreqkHz == 0x08)
//	    WriteBytes[3] |= 0x08;

 

	// Set auxiliary byte.
	//   - Note: Auxiliary byte is WriteBytes[4].
       WriteBytes[4] = ((WriteBytes[2] & (~0x38)) | 0x18);	
  
       WriteBytes[5] = 0x10; //TOP
  
	status = Tuner_Write(&WriteBytes[0], 6);

	CT_OS_MS_Delay(10);
	return TRUE; 	       
}