34 lines
673 B
C++
34 lines
673 B
C++
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#include "config_user.h"
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#include "config.h"
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unsigned int anemometerRotations = 0;
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ICACHE_RAM_ATTR void _anemometerInterrupt()
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{
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anemometerRotations++;
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#ifdef DEBUG
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Serial.print("*");
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#endif
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}
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float wind_speed()
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{
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anemometerRotations = 0;
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int interruptNumber = digitalPinToInterrupt(ANEMOMETER_PIN);
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attachInterrupt(interruptNumber, _anemometerInterrupt, RISING);
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delay(1000 * WIND_SENSOR_MEAS_TIME_S); // time to measure
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detachInterrupt(interruptNumber);
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// calculate the speed as km/h
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float tmp_speed = (float)anemometerRotations * WINDSPEED_FACTOR;
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#ifdef DEBUG
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Serial.print("Windspeed: " + String(tmp_speed));
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#endif
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return tmp_speed;
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}
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