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77 lines
1.7 KiB
77 lines
1.7 KiB
/*
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ESPurna
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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 ENABLE_DHT
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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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char dhtTemperature[6];
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char dhtHumidity[6];
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// -----------------------------------------------------------------------------
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// DHT
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// -----------------------------------------------------------------------------
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char * getDHTTemperature() {
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return dhtTemperature;
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}
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char * 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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}
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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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dtostrf(t, 4, 1, dhtTemperature);
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itoa((int) h, dhtHumidity, 10);
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DEBUG_MSG("[DHT] Temperature: %s\n", dhtTemperature);
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DEBUG_MSG("[DHT] Humidity: %s\n", dhtHumidity);
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// Send MQTT messages
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mqttSend(getSetting("dhtTmpTopic", DHT_TEMPERATURE_TOPIC).c_str(), dhtTemperature);
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mqttSend(getSetting("dhtHumTopic", DHT_HUMIDITY_TOPIC).c_str(), dhtHumidity);
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// Update websocket clients
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char buffer[100];
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sprintf_P(buffer, PSTR("{\"dhtVisible\": 1, \"dhtTmp\": %s, \"dhtHum\": %s}"), dhtTemperature, dhtHumidity);
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wsSend(buffer);
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}
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}
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}
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#endif
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