busio.c

采用台湾MRT晶捷公司的MRT4方案的液晶电视的程序

		/* Send the contest of C0 */
		SendI2CByte(0xBC);
		if(NoAck) goto buserror;

		SendI2CStop();
		/* ------------- Finish C0 -------------- */
		/* ---- I2C Start and send slave address for 78 ---- */
	 	GoI2CMaster(SLAVEADDR_REGW);
		if(NoAck | BusFault) goto buserror;

		/* Send command */
		SendI2CByte(WRITE_BYTE);
		if(NoAck) goto buserror;
	
		/* Send C0 */
		SendI2CByte(0x78);
		if(NoAck) goto buserror;

		/* Send the contest of C0 */
		SendI2CByte(c0);
		if(NoAck) goto buserror;

		SendI2CStop();
		/* ------------- Finish 78 -------------- */
		if(index > 511)
		{
			index -= 512;
			/* ---- I2C Start and send slave address for C0 ---- */
		 	GoI2CMaster(SLAVEADDR_REGW);
			if(NoAck | BusFault) goto buserror;	

			/* Send command */
			SendI2CByte(WRITE_BYTE);
			if(NoAck) goto buserror;
	
			/* Send C0 */
			SendI2CByte(0xC0);
			if(NoAck) goto buserror;

			/* Send the contest of C0 */
			SendI2CByte(0x3D);
			if(NoAck) goto buserror;

			SendI2CStop();
			/* ------------- Finish C0 -------------- */
		}
		else if (index > 255 & index<512)
		{
			index -= 256;
			/* ---- I2C Start and send slave address for C0 ---- */
		 	GoI2CMaster(SLAVEADDR_REGW);
			if(NoAck | BusFault) goto buserror;	

			/* Send command */
			SendI2CByte(WRITE_BYTE);
			if(NoAck) goto buserror;
	
			/* Send C0 */
			SendI2CByte(0xC0);
			if(NoAck) goto buserror;

			/* Send the contest of C0 */
			SendI2CByte(0x01);
			if(NoAck) goto buserror;

			SendI2CStop();
			/* ------------- Finish C0 -------------- */
		}
		else  
		{	
			/* ---- I2C Start and send slave address for C0 ---- */
		 	GoI2CMaster(SLAVEADDR_REGW);
			if(NoAck | BusFault) goto buserror;	

			/* Send command */
			SendI2CByte(WRITE_BYTE);
			if(NoAck) goto buserror;
	
			/* Send C0 */
			SendI2CByte(0xC0);
			if(NoAck) goto buserror;

			/* Send the contest of C0 */
			SendI2CByte(0x00);
			if(NoAck) goto buserror;

			SendI2CStop();
			/* ------------- Finish C0 -------------- */
		}
	}
	else	//(c0 > 0x03)
	{
		if (index > 255)
		{
			c0++;
			index -= 256;
		}	
		/* ---- I2C Start and send slave address for C0 ---- */
	 	GoI2CMaster(SLAVEADDR_REGW);
		if(NoAck | BusFault) goto buserror;

		/* Send command */
		SendI2CByte(WRITE_BYTE);
		if(NoAck) goto buserror;
	
		/* Send C0 */
		SendI2CByte(0xC0);
		if(NoAck) goto buserror;

		/* Send the contest of C0 */
		SendI2CByte(c0);
		if(NoAck) goto buserror;

		SendI2CStop();
		/* ------------- Finish C0 -------------- */
	}


	/* ---- I2C Start and send slave address for C1 ---- */
 	GoI2CMaster(SLAVEADDR_REGW);
	if(NoAck | BusFault) goto buserror;

	/* Send command */
	SendI2CByte(WRITE_BYTE);
	if(NoAck) goto buserror;

	/* Send C1 */
	SendI2CByte(0xC1);
	if(NoAck) goto buserror;

	SendI2CByte(index);
	if(NoAck) goto buserror;

	SendI2CStop();
	/* ------------- Finish C1 -------------- */

	/* ---- I2C Start and send slave address for C2 ---- */
 	GoI2CMaster(SLAVEADDR_REGW);
	if(NoAck | BusFault) goto buserror;

	/* Send command */
	SendI2CByte(WRITE_AUTOINC);
	if(NoAck) goto buserror;

	/* Send C2 */
	SendI2CByte(0xC2);
	if(NoAck) goto buserror;

	/* data transmit */
	for(byteCnt = cnt; byteCnt > 0; byteCnt--) {
		SendI2CByte(*s++);
		if(NoAck) goto buserror;
	}
    goto endi2c;

	/* ------------- Finish C2 -------------- */
buserror:
#if DEBUGMSG
   printf("BUS error (PortDataOut) !!!!\n");
#endif   

endi2c:
	SendI2CStop();




#if DISABLEINT0
	/* restove interrupt 0 flag */
	EX0 =	IntFlag;
#endif
}




/*********************************************
* Send bytes of data to standard device      *
**********************************************/
void eepByteOut(unsigned int index, unsigned char val)
{
   unsigned char slv;

#if DISABLEINT0
	bit IntFlag;

	/* disable interrupt 0 */
	IntFlag = EX0;
	EX0 = 0;
#endif

	WPPin = 0;

   if(index < 256)
      slv = SLAVEADDR_EEPW0;
   else
   if(index < 512) {
      slv = SLAVEADDR_EEPW1;
      index -= 256;
   } else
   if(index < 768) {
      slv = SLAVEADDR_EEPW2;
      index -= 512;
   } else {
      slv = SLAVEADDR_EEPW3;
      index -= 768;
   }
	/* I2C Start and send WRITE slave address */
 	GoI2CMaster(slv);
	if(NoAck | BusFault) goto buserror;

	/* Send index */
	SendI2CByte((unsigned char)index);
	if(NoAck) goto buserror;

	/* data transmit */
	SendI2CByte(val);
    //miscDelay(20);

    goto endi2c;

buserror:	
#if DEBUGMSG
   printf("BUS error (eepByteOut) !!!!\n");
#endif   

endi2c:
	SendI2CStop();
    miscDelay(15);
    
 //   WPPin = 1;
    
#if DISABLEINT0
	/* restove interrupt 0 flag */
	EX0 =	IntFlag;
#endif    
}

unsigned char eepByteIn(unsigned int index)
{
   unsigned char bval;
   unsigned char slv;

   if(index < 256)
      slv = SLAVEADDR_EEPW0;
   else
   if(index < 512) {
      slv = SLAVEADDR_EEPW1;
      index -= 256;
   } else
   if(index < 768) {
      slv = SLAVEADDR_EEPW2;
      index -= 512;
   } else {
      slv = SLAVEADDR_EEPW3;
      index -= 768;
   }

	/* I2C Start and send WRITE slave address */
 	GoI2CMaster(slv);
	if(NoAck | BusFault) goto buserror;

	/* Send index */
	SendI2CByte((unsigned char) index);
	if(NoAck) goto buserror;

	/* I2C Start and send READ slave address */
 	GoI2CMaster(slv | 0x01);
	if(NoAck) goto buserror;

	/* data transmit */
	bval = RcvI2CByte(1);

    goto endi2c;

buserror:	
#if DEBUGMSG
   printf("BUS error (eepByteIn) !!!!\n");
#endif   

endi2c:
	/* Finish trasmition */
	SendI2CStop();

	return(bval);
}

/**********************************************
* Receive bytes of data from Standard device  *
***********************************************/
void eepDataIn(unsigned int index, unsigned char *s, int cnt)
{
	int data byteCnt;
   unsigned char slv;

   if(index < 256)
      slv = SLAVEADDR_EEPW0;
   else
   if(index < 512) {
      slv = SLAVEADDR_EEPW1;
      index -= 256;
   } else
   if(index < 768) {
      slv = SLAVEADDR_EEPW2;
      index -= 512;
   } else {
      slv = SLAVEADDR_EEPW3;
      index -= 768;
   }

	/* I2C Start and send WRITE slave address */
 	GoI2CMaster(slv);
	if(NoAck | BusFault) goto buserror;

	/* Send index */
	SendI2CByte((unsigned char) index);
	if(NoAck) goto buserror;

	/* I2C Start and send READ slave address */
 	GoI2CMaster(slv | 0x01);
	if(NoAck) goto buserror;

	/* data transmit */
	for(byteCnt = cnt; byteCnt > 0; byteCnt--) {
		*s++ = RcvI2CByte(byteCnt);
	}
    goto endi2c;

buserror:	
#if DEBUGMSG
   printf("BUS error (eepDataIn) !!!!\n");
#endif   

endi2c:
	/* Finish trasmition */
	SendI2CStop();
}

/*********************************************
* Send bytes of data to standard device      *
**********************************************/
void eepDataOut(unsigned int index, unsigned char *s, int cnt)
{
	

    int data byteCnt = cnt;
    unsigned char data slv,i;

#if DISABLEINT0
	bit IntFlag;

	/* disable interrupt 0 */
	IntFlag = EX0;
	EX0 = 0;
#endif

	WPPin = 0;


   if(index < 256)
   {
      slv = SLAVEADDR_EEPW0;
   }   
   else if(index < 512)
   {
      slv = SLAVEADDR_EEPW1;
     index -= 256;
   }
   else if(index < 768)
   {
      slv = SLAVEADDR_EEPW2;
      index -= 512;
   }
   else
   {
      slv = SLAVEADDR_EEPW3;
      index -= 768;
   }

   while(1)
   {
        // Slave addr
        GoI2CMaster(slv);
        if(NoAck | BusFault)   goto buserror;

        // Start addr
        SendI2CByte(index);
        if(NoAck)   goto buserror;

        // Send Data
        for (i = 0; i < 8; i++)
        {
              SendI2CByte(*s++);
         
              if(NoAck)           goto buserror;

              if(--byteCnt == 0)  goto endi2c;
              
              index++;
              if((index % 16 )== 0)
              {
              	if(index == 256)
              	{
              		index = 0;
                  	slv += 2;
              	}
              	break;
              }
        }
        SendI2CStop();
        miscDelay(15);
  }

  goto endi2c;

buserror:
#if DEBUGMSG
   printf("BUS error (eepDataOut) !!!!\n");
#endif   

endi2c:
   SendI2CStop();
   miscDelay(15);

//	WPPin = 1;

#if DISABLEINT0
	/* restove interrupt 0 flag */
	EX0 =	IntFlag;
#endif

}



/*********************************************
* Send data table to Philips TDA8752         *
**********************************************/
void TDADataTableOut(unsigned char *tbl)
{
	RegDataOut(0x18, tbl, 4);
}

/*********************************************
*	 Set Att. Data                       *
**********************************************/
void SetOSDData(unsigned int index, unsigned char OSDfunction, unsigned char Data, unsigned int cnt)
{
	int data byteCnt;

	RegByteOut(0xC0, 0xBC);	// Select OSD Registers
	RegByteOut(0x78, OSDfunction);	// OR78 - Select Update Att

	if (index > 255)
	{
		RegByteOut(0xC0, 0x01);	
		index -= 256;
	}
	else
	{	
		RegByteOut(0xC0, 0x00);	
	}
	RegByteOut(0xC1, index);
	
	// ---- I2C Start and send slave address for C2 ---- */
	GoI2CMaster(SLAVEADDR_REGW);
	if(NoAck | BusFault) goto buserror;

	/* Send command */
	SendI2CByte(WRITE_AUTOINC);
	if(NoAck) goto buserror;

	/* Send C2 */
	SendI2CByte(0xC2);
	if(NoAck) goto buserror;
	
	
	/* data transmit */
	for(byteCnt = cnt; byteCnt > 0; byteCnt--) 
	{
		SendI2CByte(Data);
		if(NoAck) goto buserror;
	}
	/* ------------- Finish C2 -------------- */
buserror:

	SendI2CStop();

	RegByteOut(0xC0, 0x3C);	// Select Normal Registers
}