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src/sds011read.cpp
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36
src/sds011read.cpp
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// routines for fetching data from the SDS011-sensor
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// Local logging tag
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static const char TAG[] = __FILE__;
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#include <sds011read.h>
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// UART(2) is unused in this project
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static HardwareSerial sdsSerial(2); // so we use it here
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static SDS011 sdsSensor; // fine dust sensor
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// the results of the sensor:
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float pm25;
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float pm10;
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// init
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bool sds011_init()
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{
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pm25 = pm10 = 0.0;
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sdsSerial.begin(9600, SERIAL_8N1, ESP_PIN_RX, ESP_PIN_TX);
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sdsSensor.begin (&sdsSerial);
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sdsSensor.contmode(0); // for safety: wakeup/sleep - if we want it we do it by ourselves
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sdsSensor.wakeup(); // always wake up
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return true;
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}
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// reading data:
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void sds011_loop()
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{
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pm25 = pm10 = 0.0;
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int sdsErrorCode = sdsSensor.read(&pm25, &pm10);
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if (!sdsErrorCode)
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{
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ESP_LOGD(TAG, "SDS011 error: %d", sdsErrorCode);
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}
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return;
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}
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