📄 t100.c
字号:
else
{
I2CWriteByte(TW100+4,0x03,0x03);
I2CWriteByte(TW100+4,0x00,0x05);
}
break;
}
#endif*/
}
else//PAL&&FULL
{
I2CWriteTbl(PAL_FULLData);
if((!bFULL_43))//PAL&&4:3
I2CWriteTbl(PAL_43Data);
if(cSource!=5)
{
I2CWriteByte(TW100+4,0x03,0x02);
I2CWriteByte(TW100+4,0x00,0x32);
}
else
{
I2CWriteByte(TW100+4,0x03,0x03);
I2CWriteByte(TW100+4,0x00,0x33);
}
/* I2CWriteTbl(PAL_CNData);
if(cSource!=5){
I2CWriteByte(TW100+4,0x00,0x36);
I2CWriteByte(TW100+4,0x03,0x03);
}
else{
I2CWriteByte(TW100+4,0x03,0x03);
I2CWriteByte(TW100+4,0x00,0x37);
}*/
/*for(i=0;i<=1;i++)
{
// if(c50HZ_Mode)
I2CWriteTbl(PAL_CNData);
if(cSource!=5){
I2CWriteByte(TW100+4,0x00,0x36);
I2CWriteByte(TW100+4,0x03,0x03);
}
else{
I2CWriteByte(TW100+4,0x03,0x03);
I2CWriteByte(TW100+4,0x00,0x37);
}*/
// Delay_ms(50);
//if((I2CReadByte(TW100+4,0x3c)&0x01))i=2;
// else c50HZ_Mode=!c50HZ_Mode;
//}
}
// if(cSource==5)I2CWriteByte(TW100+4,0x0f,0x33);
}
void SetUD_LR(void)
{
uCHAR cTemp;
if(bUP_DOWN&bLEFT_RIGHT)
{
cTemp=UD_LR;
}
else if(bUP_DOWN&!bLEFT_RIGHT)
{
cTemp=UD_RL;
}
else if(!bUP_DOWN&bLEFT_RIGHT)
{
cTemp=DU_LR;
}
else if(!bUP_DOWN&!bLEFT_RIGHT)
{
cTemp=DU_RL;
}
I2CWriteByte(TW100,0xe1,cTemp);
}
//*************************************************
void StartCondition(void)
{
uCHAR ix;
uCHAR cTWtrytime=0;
EA=0;
while(++cTWtrytime)
{
Set_SDA_High;
Set_SCL_High; /* make sure two line is release */
for(ix = 0; ix < TWD_LONG_TIME; ix++)
{ }; /* Delay 12us */
Set_SDA_Low;
for(ix = 0; ix < TWD_LONG_TIME; ix++)
{ }; /* Delay 12us */
if((SCL_High)&&(SDA_Low))
break;
}
for(ix = 0; ix < TWD_SHORT_TIME; ix++)
{ }; /* Delay 12us */
}
//----------------------------------------
// P_Condition for TWD protocol
//----------------------------------------
void StopCondition(void)
{
uCHAR ix;
uCHAR cTWtrytime=0;
Set_SDA_Low;
Set_SCL_High;
for(ix = 0; ix < TWD_SHORT_TIME; ix++)
{ }; /* delay 12us */
while(SCL_Low && ++cTWtrytime)
{ };
for(ix = 0; ix < TWD_SHORT_TIME; ix++)
{ }; /* delay 12us */
Set_SDA_High;
for(ix = 0; ix < TWD_SHORT_TIME; ix++)
{ }; /* delay 12us */
EA=1;
}
//--------------------------------------------------
// Send_Byte
// Send a byte to master with a acknowledge bit
//--------------------------------------------------
uCHAR Send_Byte(uCHAR cData)
{
uCHAR ix, j, cAcknowledge;
uCHAR cTWtrytime=0;
cAcknowledge = 0;
for(ix = 0; ix < 8; ix++)
{
Set_SCL_Low;
for(j = 0; j < TWD_SHORT_TIME; j++)
{ };
if(cData&0x80)Set_SDA_High;
else Set_SDA_Low;
cData<<=1;
for(j = 0; j < TWD_SHORT_TIME; j++)
{ };
Set_SCL_High;
while(SCL_Low && ++cTWtrytime)
{ };
for(j = 0; j < TWD_SHORT_TIME; j++)
{ };
}
for(j = 0; j < TWD_SHORT_TIME; j++)
{ };
Set_SCL_Low;
for(j = 0; j < TWD_SHORT_TIME; j++)
{ };
Set_SDA_High; /* release data line for acknowledge */
for(j = 0; j < TWD_SHORT_TIME; j++)
{ };
Set_SCL_High; /* Send a clock for Acknowledge */
while(SCL_Low)
{ };
for(j = 0; j < TWD_SHORT_TIME; j++)
{ };
if(SDA_High) cAcknowledge = 1; /* No Acknowledge */
Set_SCL_Low; /* Finish Acknoledge */
for(j = 0; j < TWD_SHORT_TIME; j++)
{ };
return(cAcknowledge);
}
//--------------------------------------------------
// Read_Byte
// Read a byte from master with a acknowledge bit
//--------------------------------------------------
uCHAR Read_Byte(uCHAR cNum)
{
uCHAR ix, j;
uCHAR cRetval=0;
for(ix=0;ix<8;ix++){
Set_SCL_High;
while(SCL_Low){};
for(j=0;j<TWD_SHORT_TIME;j++){};
cRetval = (SDA_High)? (cRetval|(1<<(7-ix))):cRetval ; // MSB First
Set_SCL_Low;
}
if(cNum==1)
Set_SDA_High;
else
Set_SDA_Low;
//SDA = (cNum==1) 1:0;
Set_SCL_High;
while(SCL_Low){};
for(j = 0; j < TWD_SHORT_TIME; j++)
{ };
Set_SCL_Low;
Set_SDA_High;
for(j = 0; j < TWD_SHORT_TIME; j++)
{ };
return cRetval;
}
uCHAR I2CReadByte(uCHAR cAddr, uCHAR cReg)
{
uCHAR cTemp;
StartCondition();
Send_Byte(cAddr);
Send_Byte(cReg);
StartCondition();
Send_Byte(cAddr|0x01);
cTemp=Read_Byte(1);
StopCondition();
return cTemp;
}
uCHAR I2CWriteByte(uCHAR cAddr,uCHAR cReg,uCHAR cData)
{
StartCondition();
Send_Byte(cAddr);
Send_Byte(cReg);
Send_Byte(cData);
StopCondition();
return 0;
}
void I2CWriteTbl(char *pString)
{
uCHAR cAddr,cReg,cNum0,cNum1,cINC;
while(*pString != EOT)
{
cAddr=*pString++;
cNum0=*pString++;
while(cNum0)
{
cReg=*pString++;
cNum1=*pString++;
cNum0-=(cNum1+2);
if(cNum1!=1)
{
cINC=*pString++;
cNum1-=1;
}
while(cNum1--)
{
I2CWriteByte(cAddr,cReg,*pString++);
cReg+=cINC;
}
}
}
}
uCHAR twdWr_Burst_A(uCHAR cReg)
{
StartCondition();
if(!Send_Byte(TW100))
{
if(!Send_Byte(cReg))
{
return(0); //
}
}
return(1); //
}
void twdWr_Burst_D(uCHAR cData)
{
uCHAR ix;
for(ix = 0; ix < 8; ix++)
{
Set_SCL_Low;
if(cData&0x80)Set_SDA_High;
else Set_SDA_Low;
cData<<=1;
Set_SCL_High;
}
Set_SCL_Low;
Set_SDA_High; /* release data line for acknowledge */
Set_SCL_High; /* Send a clock for Acknowledge */
// if(SDA_High) cAcknowledge = 1; /* No Acknowledge */
Set_SCL_Low; /* Finish Acknoledge */
// return(cAcknowledge);
}
/*void twdWr_Burst_DQ(uCHAR cData)
{
uCHAR ix;
//uCHAR cAcknowledge;
// uCHAR cTWtrytime=0;
// cAcknowledge = 0;
for(ix = 0; ix < 8; ix++)
{
Set_SCL_Low;
if(cData&0x1)Set_SDA_High;
else Set_SDA_Low;
cData>>=1;
Set_SCL_High;
}
Set_SCL_Low;
Set_SDA_High; // release data line for acknowledge
Set_SCL_High; // Send a clock for Acknowledge
// if(SDA_High) cAcknowledge = 1; // No Acknowledge
Set_SCL_Low; // Finish Acknoledge
// return(cAcknowledge);
}*/
void twdWr_Burst_P(void)
{
StopCondition();
}
/*void twdDelay(uWORD wLoops)
{
uWORD wTemp;
while (wLoops--) {
wTemp = 1000/6; // one loop below takes about 11 us
while (wTemp--);
}
}
*/
// OSD config register Write
void OSDCfgWr(uCHAR index,uCHAR dat)
{
I2CWriteByte(TW100,OSD_CFG_INDEX,index);
I2CWriteByte(TW100,OSD_CFG_DATA,dat);
}
//*****************************************************
bit Filter13(bit le)
{
bit r;
r=INT1;
if(le==1)
{
_nop_();
_nop_();
_nop_();
r&=INT1;
_nop_();
_nop_();
_nop_();
r&=INT1;
}
else
{
_nop_();
_nop_();
_nop_();
r|=INT1;
_nop_();
_nop_();
_nop_();
r|=INT1;
}
if(r==le)
return 1;
else
return 0;
}
/*遥控接收在此中断程序内完成
数据放在ir_data内*/
/************************************/
/* Interrupt for IR subroutine */
/* external interrupt source INT0 */
/************************************/
void int1Remote(void) interrupt 2
{
unsigned int mask=1; //sary !LSB first
register BYTE i;
unsigned int count; /*计时变量*/
unsigned int temp0,temp1,ir_code=0;
ir_enable=TRUE;
TMOD=0x11; /*timer 0 operate in 16 bit mode*/
EX1=0;
TL0=0;
TH0=0;
TR0=1;
/************************************/
/* Detect IR Head */
/************************************/
do /*Detect IR head 9mS*/
{
count=(TL0+TH0*256); /*count :us unit */
if(Filter13(1)==1) break;
}while(count<=(IR_HEAD+DELTA));
TR0=0; /*停止计时*/
if(Filter13(0)==1||count<(IR_HEAD-DELTA*25)) /*for some noise disturb IR*/
{
ir_enable=FALSE; /* no IR head or not suitable for Ir head*/
EX1=1;
TR0=1;
return;
}
/************************************/
/* Detect OFF CODE 4.5mS */
/************************************/
while(Filter13(0)==1);
TR0=0;
TL0=0;
TH0=0;
TR0=1;
do /*Detect IR OFF CODE*/
{
count=(TL0+TH0*256); /*count :us unit */
if(Filter13(0)==1) break;
}while(count<(OFF_CODE+DELTA));
TR0=0;
count=(TL0+TH0*256); /*count :us unit */
if(count<=(OFF_CODE-DELTA*4))
{
/*重复码OFF=2.25*/
if((count>(OFF_REP-DELTA)&&count<(OFF_REP+DELTA)))
{ TR0=0;
TL0=0;
TH0=0;
TR0=1;
do
{
count=(TL0+TH0*256); /*count :us unit */
if(Filter13(1)==1) break;
}while(count<=(REP_CODE+DELTA));
TR0=0;
count=(TL0+TH0*256); /*count :us unit */
if(INT1==1)
{
TR0=0;
if(ir_data==LEFT||ir_data==RIGHT)
{
ir_enable=TRUE; /*注意：ir_data不变*/
EX1=0;
}
else
{
ir_data=0;
ir_enable=FALSE;
EX1=1;
TR0=1;
}
return;
}
}
else if(count>(OFF_REP+DELTA))
{
ir_enable=TRUE; /*注意：ir_data不变*/
EX1=0;
}
else
{
ir_enable=FALSE; /*not suitable for off code*/
EX1=1;
TR0=1;
return;
}
}
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