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119 lines
3.4 KiB
119 lines
3.4 KiB
/*
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DHT MODULE
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Copyright (C) 2016-2017 by Xose Pérez <xose dot perez at gmail dot com>
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*/
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#if DHT_SUPPORT
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#include <DHT.h>
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#include <Adafruit_Sensor.h>
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DHT dht(DHT_PIN, DHT_TYPE, DHT_TIMING);
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double _dhtTemperature = 0;
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unsigned int _dhtHumidity = 0;
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// -----------------------------------------------------------------------------
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// Values
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// -----------------------------------------------------------------------------
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double getDHTTemperature() {
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return _dhtTemperature;
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}
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unsigned int getDHTHumidity() {
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return _dhtHumidity;
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}
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void dhtSetup() {
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dht.begin();
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#if WEB_SUPPORT
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apiRegister(DHT_TEMPERATURE_TOPIC, DHT_TEMPERATURE_TOPIC, [](char * buffer, size_t len) {
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dtostrf(_dhtTemperature, len-1, 1, buffer);
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});
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apiRegister(DHT_HUMIDITY_TOPIC, DHT_HUMIDITY_TOPIC, [](char * buffer, size_t len) {
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snprintf_P(buffer, len, PSTR("%d"), _dhtHumidity);
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});
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#endif
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}
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void dhtLoop() {
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// Check if we should read new data
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static unsigned long last_update = 0;
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if ((millis() - last_update > DHT_UPDATE_INTERVAL) || (last_update == 0)) {
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last_update = millis();
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unsigned char tmpUnits = getSetting("tmpUnits", TMP_UNITS).toInt();
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// Read sensor data
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double h = dht.readHumidity();
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double t = dht.readTemperature(tmpUnits == TMP_FAHRENHEIT);
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// Check if readings are valid
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if (isnan(h) || isnan(t)) {
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DEBUG_MSG_P(PSTR("[DHT] Error reading sensor\n"));
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} else {
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_dhtTemperature = t;
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_dhtHumidity = h;
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char temperature[6];
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char humidity[6];
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dtostrf(t, 4, 1, temperature);
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itoa((unsigned int) h, humidity, 10);
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DEBUG_MSG_P(PSTR("[DHT] Temperature: %s%s\n"), temperature, (tmpUnits == TMP_CELSIUS) ? "ºC" : "ºF");
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DEBUG_MSG_P(PSTR("[DHT] Humidity: %s\n"), humidity);
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// Send MQTT messages
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mqttSend(getSetting("dhtTmpTopic", DHT_TEMPERATURE_TOPIC).c_str(), temperature);
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mqttSend(getSetting("dhtHumTopic", DHT_HUMIDITY_TOPIC).c_str(), humidity);
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// Send to Domoticz
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#if DOMOTICZ_SUPPORT
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{
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domoticzSend("dczTmpIdx", 0, temperature);
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int status;
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if (h > 70) {
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status = HUMIDITY_WET;
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} else if (h > 45) {
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status = HUMIDITY_COMFORTABLE;
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} else if (h > 30) {
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status = HUMIDITY_NORMAL;
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} else {
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status = HUMIDITY_DRY;
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}
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char buffer[2];
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snprintf_P(buffer, sizeof(buffer), PSTR("%d"), status);
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domoticzSend("dczHumIdx", humidity, buffer);
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}
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#endif
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#if INFLUXDB_SUPPORT
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influxDBSend(getSetting("dhtTmpTopic", DHT_TEMPERATURE_TOPIC).c_str(), temperature);
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influxDBSend(getSetting("dhtHumTopic", DHT_HUMIDITY_TOPIC).c_str(), humidity);
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#endif
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// Update websocket clients
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#if WEB_SUPPORT
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char buffer[100];
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snprintf_P(buffer, sizeof(buffer), PSTR("{\"dhtVisible\": 1, \"dhtTmp\": %s, \"dhtHum\": %s, \"tmpUnits\": %d}"), temperature, humidity, tmpUnits);
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wsSend(buffer);
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#endif
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}
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}
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}
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#endif
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