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81 lines
2.0 KiB
81 lines
2.0 KiB
/*
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DS18B20 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_DS18B20
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#include <OneWire.h>
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#include <DallasTemperature.h>
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OneWire oneWire(DS_PIN);
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DallasTemperature ds18b20(&oneWire);
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double _dsTemperature = 0;
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// -----------------------------------------------------------------------------
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// DS18B20
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// -----------------------------------------------------------------------------
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double getDSTemperature() {
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return _dsTemperature;
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}
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void dsSetup() {
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ds18b20.begin();
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apiRegister("/api/temperature", "temperature", [](char * buffer, size_t len) {
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dtostrf(_dsTemperature, len-1, 1, buffer);
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});
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}
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void dsLoop() {
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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 > DS_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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ds18b20.requestTemperatures();
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double t = (tmpUnits == TMP_CELSIUS) ? ds18b20.getTempCByIndex(0) : ds18b20.getTempFByIndex(0);
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// Check if readings are valid
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if (isnan(t)) {
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DEBUG_MSG("[DS18B20] Error reading sensor\n");
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} else {
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_dsTemperature = t;
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char temperature[6];
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dtostrf(t, 5, 1, temperature);
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DEBUG_MSG("[DS18B20] Temperature: %s%s\n", temperature, (tmpUnits == TMP_CELSIUS) ? "ºC" : "ºF");
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// Send MQTT messages
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mqttSend(getSetting("dsTmpTopic", DS_TEMPERATURE_TOPIC).c_str(), temperature);
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// Send to Domoticz
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#if ENABLE_DOMOTICZ
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domoticzSend("dczTmpIdx", 0, temperature);
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#endif
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// Update websocket clients
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char buffer[100];
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sprintf_P(buffer, PSTR("{\"dsVisible\": 1, \"dsTmp\": %s, \"tmpUnits\": %d}"), temperature, tmpUnits);
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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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