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#include <DHT.h>
#include <list>
#include <numeric>
#include "ota.h"
#include <WiFiClient.h>
#include "CCS811.h"
int PHOTORESISTOR = 0; // pin 0 is analog
#define CHECK_FREQUENCY 2 // check sensors every 2 seconds
WiFiClient *wific = 0;
int DHTPIN = 2;
int mosfet_pin = 0;
int DHTTYPE = 11;
// Tempature + Humidity Sensor
DHT dht(DHTPIN, DHTTYPE);
CCS811 ccs;
void setupCCS811()
{
switch (ccs.begin())
{
case ERR_DATA_BUS:
Serial.println("ccs: ERR_DATA_BUS");
return;
case ERR_IC_VERSION:
Serial.println("ccs: ERR_IC_VERSION");
return;
case ERR_OK:
Serial.println("ccs: ERR_OK");
break;
default:
Serial.println("ccs: unexpected error");
return;
}
ccs.setMeasCycle(ccs.eCycle_250ms);
}
void setup(void)
{
Serial.begin(115200);
Serial.println("\rSerial.");
Serial.println("\rSetupWifi.");
setupWifi((char *) hostname);
Serial.println("SetupOTA.");
setupOTA((char *) hostname);
Serial.println("SetupCCS811.");
setupCCS811();
Serial.println("Dht.begin.");
dht.begin(); // temp+humidity sensor
Serial.println("PinMode.");
pinMode(mosfet_pin, OUTPUT);
pinMode(14, OUTPUT);
Serial.println("WifiClient.");
wific = new WiFiClient();
setupCCS811();
}
void writeBoth(const char *buf)
{
Serial.print(buf);
if (wific->connected()) {
wific->write(buf);
}
}
const int readings_per_second = 3;
const int seconds_to_average = 5;
const size_t readings_size = seconds_to_average * readings_per_second;
struct SensorState
{
virtual void sense() = 0;
std::list<float> readings;
void record(float r) {
readings.push_back(r);
if (readings.size() > readings_size)
{
readings.pop_front();
}
};
float avg()
{
int n = 0;
float total = std::accumulate(readings.begin(), // float total = 0;
readings.end(), // for (auto p = readings.begin(); p != readings.end(); ++p)
0.0, // {
[&n](float sum, int x) { // if (!isnan(*p)) {
if (isnan(x)) return sum; ++n; return sum + x; // total += *p;
}); // ++n;
// }
// }
return n ? total / n : NAN;
};
};
struct TemperatureSensor : public SensorState { virtual void sense() { record(dht.readTemperature(true)); } };
struct HumiditySensor : public SensorState { virtual void sense() { record(dht.readHumidity()); } };
struct PhotoSensor : public SensorState { virtual void sense() { record(analogRead(PHOTORESISTOR)); } };
struct CO2Sensor : public SensorState { virtual void sense() { record(ccs.getCO2PPM()); } };
struct TVOCSensor : public SensorState { virtual void sense() { record(ccs.getTVOCPPB()); } };
TemperatureSensor temperatureSensor;
HumiditySensor humiditySensor;
PhotoSensor photoSensor;
CO2Sensor cO2Sensor;
TVOCSensor tVOCSensor;
void log_reading()
{
float temp = temperatureSensor.avg();
float humidity = humiditySensor.avg();
float heat_index = dht.computeHeatIndex(temp, humidity, true);
int photons = photoSensor.avg();
uint32_t co2 = cO2Sensor.avg();
uint32_t tvoc = tVOCSensor.avg();
auto fmt = "T: %.2f H: %.2f HI: %.2f Light: %d CO2: %u TVOC: %u\r\n";
char buf[500];
snprintf(buf, sizeof(buf), fmt, temp, humidity, heat_index, photons, co2, tvoc);
writeBoth(buf);
}
void sensor_loop()
{
SensorState *sensors[] = { &temperatureSensor, &humiditySensor, &photoSensor, &cO2Sensor, &tVOCSensor };
for (size_t i=0; i<sizeof(sensors)/sizeof(sensors[0]); ++i)
{
sensors[i]->sense();
}
}
int seconds = 0;
void timer_switches()
{
switch (seconds % 10)
{
case 0:
analogWrite(mosfet_pin, 255);
break;
case 1:
analogWrite(mosfet_pin, 0);
break;
case 2:
digitalWrite(14, 1);
delay(10);
digitalWrite(14, 0);
break;
}
}
void loop()
{
ArduinoOTA.handle();
if (++seconds < 0)
seconds = 0;
timer_switches();
auto ip = IPAddress(192,168,0,1);
auto port = 3141;
if (!wific->connected()) {
//Serial.println("Attempting to connect");
wific->connect(ip, port);
}
for (int i=0; i<readings_per_second; ++i)
{
sensor_loop();
if (i == readings_per_second - 1)
log_reading();
delay(1000 / readings_per_second);
}
}
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