Homie DS18B20 ESP8266-01 Issues
Posted: Wed Aug 24, 2016 5:59 pmHaving issues Homie not picking up the temperature from DS18B20. If i do it without Homie and print to serial, it works perfectly.
With Homie, does not even print on serial.
Here is my sketch.
Thanks
With Homie, does not even print on serial.
Here is my sketch.
Thanks
Code: Select all
#include <Homie.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#define FW_NAME "temperature"
#define FW_VERSION "1.0.0"
const int TEMPERATURE_INTERVAL = 300;
unsigned long lastTemperatureSent = 0;
#define ONE_WIRE_BUS 2 // DS18B20 pin
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature DS18B20(&oneWire);
HomieNode temperatureNode("temperature", "temperature");
void setupHandler() {
Homie.setNodeProperty(temperatureNode, "unit", "f", true);
}
void loopHandler() {
if (millis() - lastTemperatureSent >= TEMPERATURE_INTERVAL * 1000UL || lastTemperatureSent == 0) {
float temperature = 22; // Fake temperature here, for the example
DS18B20.requestTemperatures();
temperature = DS18B20.getTempFByIndex(0);
Serial.print("Temperature: ");
Serial.print(temperature);
Serial.println(" °F");
if (Homie.setNodeProperty(temperatureNode, "degrees", String(temperature), true)) {
lastTemperatureSent = millis();
} else {
Serial.println("Temperature sending failed");
}
}
}
void setup() {
Serial.begin(9600);
Serial.println(FW_NAME FW_VERSION);
DS18B20.begin();
Homie.setFirmware(FW_NAME, FW_VERSION);
Homie.registerNode(temperatureNode);
Homie.setSetupFunction(setupHandler);
Homie.setLoopFunction(loopHandler);
Homie.setup();
}
void loop() {
Homie.loop();
}