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76 lines
1.4 KiB
C++
76 lines
1.4 KiB
C++
//
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// FILE: max44009_setContinuousMode.ino
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.0
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// PURPOSE: demo of max44009 library
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// DATE: 2020-01-30
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//
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// Released to the public domain
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//
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// note that lux values are repeated a number of times
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// if read faster than the integration time.
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// So it makes no sense to call getLux() more than once
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// per integration time.
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// NB the getLux() call takes a bit more than 1 millisecond
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#include "Wire.h"
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#include "Max44009.h"
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Max44009 myLux(0x4A);
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uint32_t lastDisplay = 0;
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uint32_t start = 0;
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uint32_t stop = 0;
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int count = 0;
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void setup()
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{
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Serial.begin(115200);
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Serial.print("\nStart max44009_setContinuousMode : ");
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Serial.println(MAX44009_LIB_VERSION);
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Wire.begin();
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myLux.setContinuousMode();
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}
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void loop()
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{
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uint32_t interval = 100;
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if (millis() - lastDisplay >= interval)
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{
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lastDisplay += interval;
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count++;
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start = micros();
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float lux = myLux.getLux();
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stop = micros();
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int err = myLux.getError();
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if (err != 0)
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{
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Serial.print("Error:\t");
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Serial.println(err);
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}
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else
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{
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Serial.print("lux:\t");
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Serial.print(lux);
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Serial.print("\ttime:\t");
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Serial.print(stop - start);
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Serial.println();
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}
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}
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if (count == 5) myLux.clrContinuousMode();
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if (count == 10)
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{
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count = 0;
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myLux.setContinuousMode();
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}
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}
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// -- END OF FILE --
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