Fork of the espurna firmware for `mhsw` switches
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/*
ESPurna
SD18B20 MODULE
Copyright (C) 2016 by Xose Pérez <xose dot perez at gmail dot com>
*/
#if ENABLE_DS18B20
#include <OneWire.h>
#include <DallasTemperature.h>
OneWire oneWire(DS_PIN);
DallasTemperature ds18b20(&oneWire);
char dsTemperature[6];
// -----------------------------------------------------------------------------
// DS18B20
// -----------------------------------------------------------------------------
char * getDSTemperature() {
return dsTemperature;
}
void dsSetup() {
ds18b20.begin();
}
void dsLoop() {
if (!mqttConnected()) return;
// Check if we should read new data
static unsigned long last_update = 0;
if ((millis() - last_update > DS_UPDATE_INTERVAL) || (last_update == 0)) {
last_update = millis();
// Read sensor data
ds18b20.requestTemperatures();
double t = ds18b20.getTempCByIndex(0);
// Check if readings are valid
if (isnan(t)) {
DEBUG_MSG("[DS18B20] Error reading sensor\n");
} else {
dtostrf(t, 4, 1, dsTemperature);
DEBUG_MSG("[DS18B20] Temperature: %s\n", dsTemperature);
// Send MQTT messages
mqttSend(getSetting("dsTmpTopic", DS_TEMPERATURE_TOPIC).c_str(), dsTemperature);
// Update websocket clients
char buffer[100];
sprintf_P(buffer, PSTR("{\"dsVisible\": 1, \"dsTmp\": %s}"), dsTemperature);
wsSend(buffer);
}
}
}
#endif