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67 lines
1.7 KiB
67 lines
1.7 KiB
/*
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ESPurna
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DHT MODULE
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Copyright (C) 2016 by Xose Pérez <xose dot perez at gmail dot com>
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*/
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#if ENABLE_DHT
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#include <DHT.h>
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DHT dht(DHT_PIN, DHT_TYPE, DHT_TIMING);
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// -----------------------------------------------------------------------------
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// DHT
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// -----------------------------------------------------------------------------
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void dhtSetup() {
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dht.begin();
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}
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void dhtLoop() {
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if (!mqttConnected()) return;
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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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// Read sensor data
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double h = dht.readHumidity();
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double t = dht.readTemperature();
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// Check if readings are valid
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if (isnan(h) || isnan(t)) {
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DEBUG_MSG("[DHT] Error reading sensor\n");
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} else {
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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((int) h, humidity, 10);
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DEBUG_MSG("[DHT] Temperature: %s\n", temperature);
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DEBUG_MSG("[DHT] Humidity: %s\n", humidity);
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// Send MQTT messages
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mqttSend((char *) getSetting("dhtTemperatureTopic", DHT_TEMPERATURE_TOPIC).c_str(), temperature);
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mqttSend((char *) getSetting("dhtHumidityTopic", DHT_HUMIDITY_TOPIC).c_str(), humidity);
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// Update websocket clients
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char buffer[20];
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sprintf_P(buffer, PSTR("{\"temperature\": %s, \"humidity\": %s}"), temperature, humidity);
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webSocketSend(buffer);
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}
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}
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}
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#endif
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