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Changed return value of getEvent

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value of 0 could be a valid value in darkness, better to return a value > 65535 to report saturation and return false from getEvent in that case!
This commit is contained in:
Bernd Giesecke
2016-01-09 23:43:37 +08:00
parent d087310e6a
commit bcb5729944
1 changed files with 7 additions and 2 deletions
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9
Adafruit_TSL2561_U.cpp
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@ -385,10 +385,10 @@ uint32_t Adafruit_TSL2561_Unified::calculateLux(uint16_t broadband, uint16_t ir)
break; break;
} }
/* Return 0 lux if the sensor is saturated */ /* Return 65536 lux if the sensor is saturated */
if ((broadband > clipThreshold) || (ir > clipThreshold)) if ((broadband > clipThreshold) || (ir > clipThreshold))
{ {
return 0; return 65536;
} }
/* Get the correct scale depending on the intergration time */ /* Get the correct scale depending on the intergration time */
@ -476,6 +476,8 @@ uint32_t Adafruit_TSL2561_Unified::calculateLux(uint16_t broadband, uint16_t ir)
/**************************************************************************/ /**************************************************************************/
/*! /*!
@brief Gets the most recent sensor event @brief Gets the most recent sensor event
returns true if sensor reading is between 0 and 65535 lux
returns false if sensor is saturated
*/ */
/**************************************************************************/ /**************************************************************************/
bool Adafruit_TSL2561_Unified::getEvent(sensors_event_t *event) bool Adafruit_TSL2561_Unified::getEvent(sensors_event_t *event)
@ -494,6 +496,9 @@ bool Adafruit_TSL2561_Unified::getEvent(sensors_event_t *event)
getLuminosity(&broadband, &ir); getLuminosity(&broadband, &ir);
event->light = calculateLux(broadband, ir); event->light = calculateLux(broadband, ir);
if (event->light == 65536) {
return false;
}
return true; return true;
} }