Datasheet

results, as shown in the following code:
void getSensor(sensor_t*)
This function returns some basic information about the sensor, and operates in a similar fashion to getEvent. You pass
in an empty sensor_t reference, which will be populated by this function, and we can then read the results and retrieve
some key details about the sensor and driver, as shown in the code below:
/**************************************************************************/
/*
Performs a read using the Adafruit Unified Sensor API.
*/
/**************************************************************************/
void unifiedSensorAPIRead(void)
{
/* Get a new sensor event */
sensors_event_t event;
tsl.getEvent(&event);
/* Display the results (light is measured in lux) */
Serial.print("[ "); Serial.print(event.timestamp); Serial.print(" ms ] ");
if ((event.light == 0) |
(event.light > 4294966000.0) |
(event.light <-4294966000.0))
{
/* If event.light = 0 lux the sensor is probably saturated */
/* and no reliable data could be generated! */
/* if event.light is +/- 4294967040 there was a float over/underflow */
Serial.println("Invalid data (adjust gain or timing)");
}
else
{
Serial.print(event.light); Serial.println(" lux");
}
}
Note that some checks need to be performed on the sensor data in case the sensor saturated. If saturation
happens, please adjust the gain and integration time up or down to change the sensor's sensitivity and
output range.
© Adafruit Industries https://learn.adafruit.com/adafruit-tsl2591 Page 16 of 24