TSL2568, TSL2569
LIGHT-TO-DIGITAL CONVERTER
TAOS091D  DECEMBER 2008
25
The LUMENOLOGY r Company
r
r
Copyright E 2008, TAOS Inc.
www.taosinc.com
switch (iType)
{
case 0:
// T package
if ((ratio >= 0) && (ratio <= K1T))
{b=B1T; m=M1T;}
else if (ratio <= K2T)
{b=B2T; m=M2T;}
else if (ratio <= K3T)
{b=B3T; m=M3T;}
else if (ratio <= K4T)
{b=B4T; m=M4T;}
else if (ratio <= K5T)
{b=B5T; m=M5T;}
else if (ratio > K6T)
{b=B6T; m=M6T;}
break;
case 1:
// CS package
if ((ratio >= 0) && (ratio <= K1C))
{b=B1C; m=M1C;}
else if (ratio <= K2C)
{b=B2C; m=M2C;}
else if (ratio <= K3C)
{b=B3C; m=M3C;}
else if (ratio <= K4C)
{b=B4C; m=M4C;}
else if (ratio <= K5C)
{b=B5C; m=M5C;}
else if (ratio > K6C)
{b=B6C; m=M6C;}
break;
}
unsigned long temp;
unsigned long lux;
temp = ((channel0 * b)  (channel1 * m));
// scale CS or T package
// round lsb (2^(LUX_SCALE1))
temp += (1 << (LUX_SCALE1));
// strip off fractional portion
lux = temp >> LUX_SCALE;
return(lux);
}
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