messages from sensor doesn't seem to appear on gateway, st=ok [solved]

jantup

Hi,

I'm trying to put very basic config together for the first time and it seem that I'm missing something very obvious here.

I have made a serial GW connected to RPi2 running OpenHAB 1.7.0 on top of Ubuntu server and sensor node with 3 sensors attached: DHT temperature and humidity, BMP180 pressure and simple soil moisture. Both Adruinos are Pro Mini. I have downloaded 1.4.1 MySensors library, I use Arduino IDE 1.6.4 on OS X.

I have put together sensor node sketch from library examples. After some tinkering it seem to me that I've got communication flowing, but messages seem empty! I've looked at it for a while, tried to google it but with no result so far.

Please help me with advice! I will read detailed API and protocol descriptions meanwhile

Here is sensor node sketch:

#include <SPI.h>
#include <MySensor.h>  
#include <DHT.h>  
#include <Wire.h>
#include <Adafruit_BMP085.h>

#define CHILD_ID_HUM 0
#define CHILD_ID_DHT_TEMP 1
#define CHILD_ID_BARO 2
#define CHILD_ID_BMP_TEMP 3
#define CHILD_ID_SOIL_MOIST 4

#define HUMIDITY_SENSOR_DIGITAL_PIN 4

#define SOIL_MOISTURE_SENSOR_ANALOG_PIN 0

const float ALTITUDE = 20; // <-- adapt this value to your own location's altitude.

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

const char *weather[] = { "stable", "sunny", "cloudy", "unstable", "thunderstorm", "unknown" };
enum FORECAST
{
	STABLE = 0,			// "Stable Weather Pattern"
	SUNNY = 1,			// "Slowly rising Good Weather", "Clear/Sunny "
	CLOUDY = 2,			// "Slowly falling L-Pressure ", "Cloudy/Rain "
	UNSTABLE = 3,		// "Quickly rising H-Press",     "Not Stable"
	THUNDERSTORM = 4,	// "Quickly falling L-Press",    "Thunderstorm"
	UNKNOWN = 5			// "Unknown (More Time needed)
};

Adafruit_BMP085 bmp = Adafruit_BMP085();      // BMP180 Digital Pressure Sensor 
DHT dht;      // DHT Temperature and humidity sensor
MySensor gw;

float lastDHTTemp = -1;
float lastHum = -1;
float DHTtemperature = -1;
float humidity = -1;

boolean metric = true;

float lastPressure = -1;
float lastBMPTemp = -1;
int lastForecast = -1;

const int LAST_SAMPLES_COUNT = 5;
float lastPressureSamples[LAST_SAMPLES_COUNT];

// this CONVERSION_FACTOR is used to convert from Pa to kPa in forecast algorithm
// get kPa/h be dividing hPa by 10 
#define CONVERSION_FACTOR (1.0/10.0)

int minuteCount = 0;
bool firstRound = true;
float pressureAvg[7];

float dP_dt;

int lastSoilMoisture = -1;
int soilMoisture = -1;

MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgDHTTemp(CHILD_ID_DHT_TEMP, V_TEMP);
MyMessage msgBMPTemp(CHILD_ID_BMP_TEMP, V_TEMP);
MyMessage msgPressure(CHILD_ID_BARO, V_PRESSURE);
MyMessage msgForecast(CHILD_ID_BARO, V_FORECAST);

MyMessage msgSoilMoisture(CHILD_ID_SOIL_MOIST, V_RAIN);


void setup()  
{ 
  gw.begin();

  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

  if (!bmp.begin()) 
  {
    Serial.println("Could not find a valid BMP085 sensor, check wiring!");
    while (1) {}
  }

  // Send the Sketch Version Information to the Gateway
  gw.sendSketchInfo("Outside sensor", "0.01");

  // Register all sensors to gw (they will be created as child devices)
  gw.present(CHILD_ID_HUM, S_HUM);
  gw.present(CHILD_ID_DHT_TEMP, S_TEMP);
  gw.present(CHILD_ID_BARO, S_BARO);
  gw.present(CHILD_ID_BMP_TEMP, S_TEMP);
  gw.present(CHILD_ID_SOIL_MOIST, S_RAIN);

  metric = gw.getConfig().isMetric;
}

void loop()      
{  

  // ****** DHT ******

  delay(dht.getMinimumSamplingPeriod());

  DHTtemperature = dht.getTemperature();
  if (isnan(DHTtemperature)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (DHTtemperature != lastDHTTemp) {
    lastDHTTemp = DHTtemperature;
    if (!metric) {
      DHTtemperature = dht.toFahrenheit(DHTtemperature);
    }
    gw.send(msgDHTTemp.set(DHTtemperature, 1));
    Serial.print("DHT Temperature: ");
    Serial.println(DHTtemperature);
  }
  
  humidity = dht.getHumidity();
  if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum) {
      lastHum = humidity;
      gw.send(msgHum.set(humidity, 1));
      Serial.print("Humidity: ");
      Serial.println(humidity);
  }

  // ****** BMP ******
  
  float pressure = bmp.readSealevelPressure(ALTITUDE) / 100.0;
  float BMPtemperature = bmp.readTemperature();
  
  if (!metric) 
  {
    // Convert to fahrenheit
    BMPtemperature = BMPtemperature * 9.0 / 5.0 + 32.0;
  }
  
  int forecast = sample(pressure);
  
  Serial.print("BMP Temperature = ");
  Serial.print(BMPtemperature);
  Serial.println(metric ? " *C" : " *F");
  Serial.print("Pressure = ");
  Serial.print(pressure);
  Serial.println(" hPa");
  Serial.print("Forecast = ");
  Serial.println(weather[forecast]);
  
  if (BMPtemperature != lastBMPTemp) 
  {
    gw.send(msgBMPTemp.set(BMPtemperature, 1));
    lastBMPTemp = BMPtemperature;
  }
  
  if (pressure != lastPressure) 
  {
    gw.send(msgPressure.set(pressure, 0));
    lastPressure = pressure;
  }
  
  if (forecast != lastForecast)
  {
    gw.send(msgForecast.set(weather[forecast]));
    lastForecast = forecast;
  }

  // ****** Soil moisture ******
  
  soilMoisture = analogRead(SOIL_MOISTURE_SENSOR_ANALOG_PIN);
  
  Serial.print("Soil moisture (0-1023) = ");
  Serial.println(soilMoisture);
  
  if (soilMoisture != lastSoilMoisture) 
  {
    gw.send(msgSoilMoisture.set(soilMoisture, 1));
    lastSoilMoisture = soilMoisture;
  }
  
  gw.sleep(SLEEP_TIME); //sleep a bit
}

float getLastPressureSamplesAverage()
{
	float lastPressureSamplesAverage = 0;
	for (int i = 0; i < LAST_SAMPLES_COUNT; i++)
	{
		lastPressureSamplesAverage += lastPressureSamples[i];
	}
	lastPressureSamplesAverage /= LAST_SAMPLES_COUNT;

	return lastPressureSamplesAverage;
}

// Algorithm found here
// http://www.freescale.com/files/sensors/doc/app_note/AN3914.pdf
// Pressure in hPa -->  forecast done by calculating kPa/h
int sample(float pressure)
{
	// Calculate the average of the last n minutes.
	int index = minuteCount % LAST_SAMPLES_COUNT;
	lastPressureSamples[index] = pressure;

	minuteCount++;
	if (minuteCount > 185)
	{
		minuteCount = 6;
	}

	if (minuteCount == 5)
	{
		pressureAvg[0] = getLastPressureSamplesAverage();
	}
	else if (minuteCount == 35)
	{
		pressureAvg[1] = getLastPressureSamplesAverage();
		float change = (pressureAvg[1] - pressureAvg[0]) * CONVERSION_FACTOR;
		if (firstRound) // first time initial 3 hour
		{
			dP_dt = change * 2; // note this is for t = 0.5hour
		}
		else
		{
			dP_dt = change / 1.5; // divide by 1.5 as this is the difference in time from 0 value.
		}
	}
	else if (minuteCount == 65)
	{
		pressureAvg[2] = getLastPressureSamplesAverage();
		float change = (pressureAvg[2] - pressureAvg[0]) * CONVERSION_FACTOR;
		if (firstRound) //first time initial 3 hour
		{
			dP_dt = change; //note this is for t = 1 hour
		}
		else
		{
			dP_dt = change / 2; //divide by 2 as this is the difference in time from 0 value
		}
	}
	else if (minuteCount == 95)
	{
		pressureAvg[3] = getLastPressureSamplesAverage();
		float change = (pressureAvg[3] - pressureAvg[0]) * CONVERSION_FACTOR;
		if (firstRound) // first time initial 3 hour
		{
			dP_dt = change / 1.5; // note this is for t = 1.5 hour
		}
		else
		{
			dP_dt = change / 2.5; // divide by 2.5 as this is the difference in time from 0 value
		}
	}
	else if (minuteCount == 125)
	{
		pressureAvg[4] = getLastPressureSamplesAverage();
		float change = (pressureAvg[4] - pressureAvg[0]) * CONVERSION_FACTOR;
		if (firstRound) // first time initial 3 hour
		{
			dP_dt = change / 2; // note this is for t = 2 hour
		}
		else
		{
			dP_dt = change / 3; // divide by 3 as this is the difference in time from 0 value
		}
	}
	else if (minuteCount == 155)
	{
		pressureAvg[5] = getLastPressureSamplesAverage();
		float change = (pressureAvg[5] - pressureAvg[0]) * CONVERSION_FACTOR;
		if (firstRound) // first time initial 3 hour
		{
			dP_dt = change / 2.5; // note this is for t = 2.5 hour
		}
		else
		{
			dP_dt = change / 3.5; // divide by 3.5 as this is the difference in time from 0 value
		}
	}
	else if (minuteCount == 185)
	{
		pressureAvg[6] = getLastPressureSamplesAverage();
		float change = (pressureAvg[6] - pressureAvg[0]) * CONVERSION_FACTOR;
		if (firstRound) // first time initial 3 hour
		{
			dP_dt = change / 3; // note this is for t = 3 hour
		}
		else
		{
			dP_dt = change / 4; // divide by 4 as this is the difference in time from 0 value
		}
		pressureAvg[0] = pressureAvg[5]; // Equating the pressure at 0 to the pressure at 2 hour after 3 hours have past.
		firstRound = false; // flag to let you know that this is on the past 3 hour mark. Initialized to 0 outside main loop.
	}

	int forecast = UNKNOWN;
	if (minuteCount < 35 && firstRound) //if time is less than 35 min on the first 3 hour interval.
	{
		forecast = UNKNOWN;
	}
	else if (dP_dt < (-0.25))
	{
		forecast = THUNDERSTORM;
	}
	else if (dP_dt > 0.25)
	{
		forecast = UNSTABLE;
	}
	else if ((dP_dt > (-0.25)) && (dP_dt < (-0.05)))
	{
		forecast = CLOUDY;
	}
	else if ((dP_dt > 0.05) && (dP_dt < 0.25))
	{
		forecast = SUNNY;
	}
	else if ((dP_dt >(-0.05)) && (dP_dt < 0.05))
	{
		forecast = STABLE;
	}
	else
	{
		forecast = UNKNOWN;
	}

	return forecast;
}

Sensor node log:

req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
sensor started, id 255
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
DHT Temperature: 23.00

req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
Humidity: 48.70

BMP Temperature = 23.20 *C

Pressure = 1016.88 hPa

Forecast = unknown

req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
Soil moisture (0-1023) = 1023

req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
Humidity: 48.90

BMP Temperature = 23.20 *C

Pressure = 1016.83 hPa

Forecast = unknown

req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
Soil moisture (0-1023) = 1023

req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
DHT Temperature: 23.10

BMP Temperature = 23.30 *C

Pressure = 1016.83 hPa

Forecast = unknown

req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
Soil moisture (0-1023) = 1023

req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
Humidity: 49.20

BMP Temperature = 23.30 *C

Pressure = 1016.85 hPa

Forecast = unknown

req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
Soil moisture (0-1023) = 1023

Extract from OpenHAB log, specifically what it gets on serial:

2015-08-01 15:07:31.604 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;14;Gateway startup complete.

2015-08-01 15:09:08.070 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:09:10.073 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:09:12.082 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:09:14.088 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:09:16.099 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:09:18.106 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:09:20.114 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:09:24.126 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:09:26.139 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:09:28.193 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:09:30.200 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:09:32.207 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:09:34.217 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:10:07.495 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:10:09.551 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:10:42.826 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:10:44.885 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:11:18.159 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

2015-08-01 15:11:20.215 [INFO ] [runtime.busevents             ] - Arduino_serial state updated to 0;0;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0:
255;255;3;0;3;

jantup

ok, I got where my fundamental mistake was: I was thinking that GW is managing node ID's...

this helped me

ok, headed to OpenHAB now

messages from sensor doesn't seem to appear on gateway, st=ok [solved]

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messages from sensor doesn't seem to appear on gateway, st=ok [solved]

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