You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
1.5 KiB
70 lines
1.5 KiB
/*
|
|
|
|
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
|