Two Wire Temperature Sensor Convert from older gateway NEED HELP

[Newzwaver]

Hi Everyone,

I am using this old sketch for a two wire temp probe and upgraded to the 2.1.1 gateway and can't figure out what to change to get it to work. Do anyone know of a basic guide? I can't find one.

#include <MySensor.h>
#include <SPI.h>

#define THERMISTORPIN A0
#define THERMISTORNOMINAL 10000
#define TEMPERATURENOMINAL 25
#define NUMSAMPLES 5
#define BCOEFFICIENT 3950
#define SERIESRESISTOR 10000

const unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)

MySensor gw;

// Initialize temperature message
MyMessage msg(0,V_TEMP);

int samples[NUMSAMPLES];

void setup(void) {

pinMode(THERMISTORPIN, INPUT);
analogReference(EXTERNAL);

// Startup and initialize MySensors library. Set callback for incoming messages.
gw.begin();

// Send the sketch version information to the gateway and Controller
gw.sendSketchInfo("Temperature Sensor", "1.1");

// Present all sensors to controller
gw.present(0, S_TEMP);
}

void loop(void) {
// Process incoming messages (like config from server)
gw.process();

float average;

// take N samples in a row, with a slight delay
for (uint8_t i=0; i< NUMSAMPLES; i++) {
samples[i] = analogRead(THERMISTORPIN);
delay(10);
}
// average all the samples out
average = 0;
for (uint8_t i=0; i< NUMSAMPLES; i++) {
average += samples[i];
}
average /= NUMSAMPLES;

Serial.print("Average analog reading ");
Serial.println(average);

// convert the value to resistance
average = 1023 / average - 1;
average = SERIESRESISTOR / average;
Serial.print("Thermistor resistance ");
Serial.println(average);

float temperature;
temperature = average / THERMISTORNOMINAL; // (R/Ro)
temperature = log(temperature); // ln(R/Ro)
temperature /= BCOEFFICIENT; // 1/B * ln(R/Ro)
temperature += 1.0 / (TEMPERATURENOMINAL + 273.15); // + (1/To)
temperature = 1.0 / temperature; // Invert
temperature -= 258.95; // convert to C

Serial.print("Temperature ");
Serial.print(temperature);
Serial.println(" *C");
// Send in the new temperature
gw.send(msg.setSensor(0).set(temperature,1));
// delay(1000);
gw.sleep(SLEEP_TIME);
}

[scalz]

Hello,

you need to convert your node to MySensors 2.x api. you can see how it looks in MySensors examples and there are also some guidelines here: https://forum.mysensors.org/topic/4276/converting-a-sketch-from-1-5-x-to-2-0-x

[Newzwaver]

Hi

Thank you for the prompt reply, I will have a look.

Thanks
T