UINT8 TK_Init( UINT8 channel , UINT8 queryFreq, UINT8 ie )
{
UINT8 i,j;
UINT16 sum;
UINT16 OverTime;
if ( ( channel & BIT6 ) != 0 )/* not include BIT2 & BIT3 */
{
return FAIL;
}
P1_DIR_PU &= ~channel;
P1_MOD_OC &= ~channel;
if( queryFreq != 0 )
{
TKEY_CTRL |= bTKC_2MS ;
}
/* Get Key_FreeBuf. Save the data in flash or macro define. */
/* DO NOT get Key_FreeBuf in Mass Production. */
for ( i = 0; i < TOUCH_NUM; i++ )
{
sum = 0;
j = SAMPLE_TIMES;
TK_SelectChannel( i );
//TKEY_CTRL |= TK_Code[i];
while( j-- )
{
OverTime = 0;
while( ( TKEY_CTRL & bTKC_IF ) == 0 )
{
if( ++OverTime == 0 )
{
return FAIL;
}
}
sum += TKEY_DAT;/* */
}
Key_FreeBuf[i] = sum / SAMPLE_TIMES;
}
if( ie != 0 )/* Enable interrupt ? */
{
IE_TKEY = 1;
}
return SUCCESS;
}
/*******************************************************************************
* Function Name : ABS
* Description : ?ó??????????????????
* Input : a,b
* Output : None
* Return : ??????????
*******************************************************************************/
UINT16 ABS(UINT16 a,UINT16 b)
{
if(a>b)
{
return (a-b);
}
else
{
return (b-a);
}
}
/*******************************************************************************
* Function Name : TK_Measure
* Description : Measure touch input.
* Input : None
* Return : None
*******************************************************************************/
UINT8 TK_Measure( void )
{
UINT8 i,j,num;
UINT16err;
UINT16 sum;
UINT16 OverTime;
for ( i = 0; i < TOUCH_NUM; i++ )
{
sum = 0;
j = SAMPLE_TIMES;
TK_SelectChannel( i );
num = TK_Code[i] - 1;
while( j-- )
{
OverTime = 0;
while( ( TKEY_CTRL & bTKC_IF ) == 0 )
{
if( ++OverTime == 0 )
{
return FAIL;
}
}
sum += TKEY_DAT;/* */
}
Key_DataBuf[i] = sum / SAMPLE_TIMES;
err = ABS(Key_FreeBuf[i],Key_DataBuf[i]);
if( err > DOWM_THRESHOLD_VALUE )
{
if((Press_Flag & (1<
{
YA_ON();
//beep_on();
}
Press_Flag |= (1<
}
else if( err < UP_THRESHOLD_VALUE ) //???÷?§???ò????°???
{
if(Press_Flag & (1<
{
Press_Flag &= ~(1<
YA_OFF();
}
}
}
return SUCCESS;
}
