53 lines
1.1 KiB
C++
53 lines
1.1 KiB
C++
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#include "config_user.h"
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#include "config.h"
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volatile unsigned int anemometerRotations = 0;
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uint32_t start_meas_wind_time = 0;
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int interruptNumber;
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void ICACHE_RAM_ATTR _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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debug("*");
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#endif
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}
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float wind_speed()
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{
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start_measure_wind();
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do {
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delay(1000); // minimum delay of measurement time is 1 second
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} while (check_measure_wind_done() == false);
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return measure_wind_result();
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}
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void start_measure_wind()
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{
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start_meas_wind_time = millis();
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anemometerRotations = 0;
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interruptNumber = digitalPinToInterrupt(ANEMOMETER_PIN);
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attachInterrupt(interruptNumber, _anemometerInterrupt, FALLING);
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}
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boolean check_measure_wind_done()
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{
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if ((start_meas_wind_time + (WIND_SENSOR_MEAS_TIME_S * 1000)) <= millis())
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{
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detachInterrupt(interruptNumber);
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return true;
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}
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return false;
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}
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float measure_wind_result()
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{
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start_meas_wind_time = 0;
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#ifdef DEBUG
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debug("rotations = " + String((float)anemometerRotations));
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#endif
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return (float)anemometerRotations * WINDSPEED_FACTOR;
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}
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