112 lines
No EOL
2.5 KiB
C++
112 lines
No EOL
2.5 KiB
C++
#include <Arduino.h>
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#include <MQ135.h>
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#include <dht.h>
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#define PIN_MQ135 A0
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#define PIN_DHT11 A1
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#define PIN_LED_GREEN DD2
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#define PIN_LED_YELLOW DD3
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#define PIN_LED_RED DD4
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#define PIN_NOISE DD5
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#define MEASURE_DELAY 1000
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#define NOISE_DELAY 100
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MQ135 co2_sensor = MQ135(PIN_MQ135);
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dht dht_sensor;
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const int maxCount = MEASURE_DELAY / NOISE_DELAY;
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int count = 0;
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float ppm = -1;
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bool noise = false;
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void setup() {
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Serial.begin(9600);
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pinMode(PIN_MQ135, INPUT);
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pinMode(PIN_DHT11, INPUT);
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pinMode(PIN_LED_GREEN, OUTPUT);
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pinMode(PIN_LED_YELLOW, OUTPUT);
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pinMode(PIN_LED_RED, OUTPUT);
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pinMode(PIN_NOISE, OUTPUT);
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}
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float measure() {
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Serial.print(RZERO);
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Serial.println("---------------------------");
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Serial.print("DHT:\t");
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int chk = dht_sensor.read11(PIN_DHT11);
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switch (chk)
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{
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case DHTLIB_OK:
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Serial.print("OK,\t");
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break;
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case DHTLIB_ERROR_CHECKSUM:
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Serial.print("Checksum error,\t");
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break;
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case DHTLIB_ERROR_TIMEOUT:
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Serial.print("Time out error,\t");
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break;
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case DHTLIB_ERROR_CONNECT:
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Serial.print("Connect error,\t");
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break;
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case DHTLIB_ERROR_ACK_L:
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Serial.print("Ack Low error,\t");
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break;
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case DHTLIB_ERROR_ACK_H:
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Serial.print("Ack High error,\t");
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break;
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default:
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Serial.print("Unknown error,\t");
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break;
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}
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Serial.println();
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Serial.print ("temperature: ");
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Serial.println (dht_sensor.temperature);
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Serial.print ("humidity: ");
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Serial.println (dht_sensor.humidity);
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float val = analogRead(A0);
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Serial.print ("raw = ");
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Serial.println (val);
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float zero = co2_sensor.getCorrectedRZero(dht_sensor.temperature, dht_sensor.humidity);
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Serial.print ("rzero: ");
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Serial.println (zero);
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float ppm = co2_sensor.getCorrectedPPM(dht_sensor.temperature, dht_sensor.humidity);
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Serial.print ("ppm: ");
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Serial.println (ppm);
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return ppm;
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}
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void loop() {
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if (count >= maxCount || ppm < 0) {
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ppm = measure();
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count = 0;
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if (ppm < 1000) {
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digitalWrite(PIN_LED_GREEN, 1);
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digitalWrite(PIN_LED_YELLOW, 0);
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digitalWrite(PIN_LED_RED, 0);
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}
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else if (ppm <= 2000) {
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digitalWrite(PIN_LED_GREEN, 0);
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digitalWrite(PIN_LED_YELLOW, 1);
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digitalWrite(PIN_LED_RED, 0);
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}
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else {
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digitalWrite(PIN_LED_GREEN, 0);
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digitalWrite(PIN_LED_YELLOW, 0);
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digitalWrite(PIN_LED_RED, 1);
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}
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}
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if (ppm > 2000) {
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noise = !noise;
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digitalWrite(PIN_NOISE, noise);
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}
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else {
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digitalWrite(PIN_NOISE, 0);
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}
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delay(NOISE_DELAY);
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count++;
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} |