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Correct divide-by-zero error when no light detected.

This commit is contained in:
man-deli 2021-01-20 13:11:38 -06:00
parent efaed8046d
commit 9863e238c0
1 changed files with 9 additions and 1 deletions
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8
lib/lib_i2c/Adafruit_TSL2591_Library/Adafruit_TSL2591.cpp
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@ -338,7 +338,15 @@ float Adafruit_TSL2591::calculateLux(uint16_t ch0, uint16_t ch1)
// Alternate lux calculation 1 // Alternate lux calculation 1
// See: https://github.com/adafruit/Adafruit_TSL2591_Library/issues/14 // See: https://github.com/adafruit/Adafruit_TSL2591_Library/issues/14
if(ch0 > 0)
{
lux = ( ((float)ch0 - (float)ch1 )) * (1.0F - ((float)ch1/(float)ch0) ) / cpl; lux = ( ((float)ch0 - (float)ch1 )) * (1.0F - ((float)ch1/(float)ch0) ) / cpl;
}
else
{
lux = 0.0F;
}
// Alternate lux calculation 2 // Alternate lux calculation 2
//lux = ( (float)ch0 - ( 1.7F * (float)ch1 ) ) / cpl; //lux = ( (float)ch0 - ( 1.7F * (float)ch1 ) ) / cpl;