Posts made by lekeb

lekeb

correct, it makes sense. I will correct this error.
However Domoticz reads correctly the temperature and links correctly the CHILD ID's, so...

lekeb

Sur,

my node controls two relays, one water pressure sensor and three DS18b20

/**
 code pour controle cave a vin, temp et pression
 */

// Enable debug prints to serial monitor
//#define MY_DEBUG

// Enable and select radio type attached
#define MY_RADIO_NRF24

// Enable repeater functionality for this node
#define MY_REPEATER_FEATURE

#define MY_NODE_ID 15
#include <SPI.h>
#include <MySensors.h>
#include <DallasTemperature.h>
#include <OneWire.h>

#define BARO_CHILD 0 //Child ID for pressure sensor
#define BAR_SENSOR_ANALOG_PIN 0 // pin for pressure sensor

#define COMPARE_TEMP 1 // Send temperature only if changed? 1 = Yes 0 = No

#define ONE_WIRE_BUS 5 // Pin where dallase sensor is connected 
#define MAX_ATTACHED_DS18B20 16
#define RELAY_PIN 3 //pin for first relay
#define NUMBER_OF_RELAYS 2
#define RELAY_ON 1  // GPIO value to write to turn on attached relay
#define RELAY_OFF 0 // GPIO value to write to turn off attached relay

OneWire oneWire(ONE_WIRE_BUS); // Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
DallasTemperature sensors(&oneWire); // Pass the oneWire reference to Dallas Temperature. 
float lastTemperature[MAX_ATTACHED_DS18B20];
int numSensors=0;
bool receivedConfig = false;
bool metric = true;
float lastpression;
uint8_t DS_First_Child_ID = 4; //First Child-ID to be used by Dallas Bus
MyMessage pressureMsg(BARO_CHILD, V_PRESSURE);
MyMessage msg(0,V_TEMP);


void before()
{
    for (int sensor=1, pin=RELAY_PIN; sensor<=NUMBER_OF_RELAYS; sensor++, pin++) {
        // Then set relay pins in output mode
        pinMode(pin, OUTPUT);
        // Set relay to last known state (using eeprom storage)
        digitalWrite(pin, loadState(sensor)?RELAY_ON:RELAY_OFF);
    }
    
    // Startup up the OneWire library
  sensors.begin();
}

void setup()
{
   
// requestTemperatures() will not block current thread
  sensors.setWaitForConversion(false);
}

void presentation()
{
    // Send the sketch version information to the gateway and Controller
    sendSketchInfo("Buanderie node", "1.0");

    //present pressure sensor
    present(BARO_CHILD, S_BARO);

    for (int sensor=1, pin=RELAY_PIN; sensor<=NUMBER_OF_RELAYS; sensor++, pin++) {
        // Register all sensors to gw (they will be created as child devices)
        present(sensor, S_BINARY);
    }

    
// Fetch the number of attached temperature sensors  
  numSensors = sensors.getDeviceCount();

  // Present all sensors to controller
  for (int i=0; i<numSensors && i<MAX_ATTACHED_DS18B20; i++) {   
     present(i + DS_First_Child_ID, S_TEMP);
  }
}



void loop()
{
  //read water pressure
int lecture_adc = analogRead(BAR_SENSOR_ANALOG_PIN);
  float pression = ((lecture_adc*5/1024.0)-0.50)/1.7;
  if(pression != lastpression) { 
      send(pressureMsg.set(pression, 2));
  lastpression = pression;
  }
  
  
  // Fetch temperatures from Dallas sensors
  sensors.requestTemperatures();

  // query conversion time and sleep until conversion completed
  int16_t conversionTime = sensors.millisToWaitForConversion(sensors.getResolution());
  // sleep() call can be replaced by wait() call if node need to process incoming messages (or if node is repeater)
  sleep(conversionTime);

  // Read temperatures and send them to controller 
  for (int i=0; i<numSensors && i<MAX_ATTACHED_DS18B20; i++) {

    // Fetch and round temperature to one decimal
    float temperature = static_cast<float>(static_cast<int>((getControllerConfig().isMetric?sensors.getTempCByIndex(i):sensors.getTempFByIndex(i)) * 10.)) / 10.;

    // Only send data if temperature has changed and no error
    #if COMPARE_TEMP == 1
    if (lastTemperature[i] != temperature && temperature != -127.00 && temperature != 85.00) {
    #else
    if (temperature != -127.00 && temperature != 85.00) {
    #endif

      // Send in the new temperature
      send(msg.setSensor(i + DS_First_Child_ID).set(temperature,1));
      // Save new temperatures for next compare
      lastTemperature[i]=temperature;
    }
  }
}

void receive(const MyMessage &message)
{
    // We only expect one type of message from controller. But we better check anyway.
    if (message.type==V_STATUS) {
        // Change relay state
        digitalWrite(message.sensor-1+RELAY_PIN, message.getBool()?RELAY_ON:RELAY_OFF);
        // Store state in eeprom
        saveState(message.sensor, message.getBool());
        // Write some debug info
        Serial.print("Incoming change for sensor:");
        Serial.print(message.sensor);
        Serial.print(", New status: ");
        Serial.println(message.getBool());
    }
}

lekeb

perfect it works great. I started my temperature sensor at CHILD ID 4 and let relays from 1 to 2. I had to add also "DS_First_Child_ID" in the sent message to gateway.
thanks

lekeb

ok thanks a lot I will try this night

lekeb

hello.
I am building a node with several kind of sensors and two relays.
My sensors use CHILD ID from 0 to 3. I would like to start child ID of relay from 4.
How I can't do that with this sketch?
I guess I have to change this part of sketch :
"for (int sensor=1, pin=RELAY_PIN; sensor<=NUMBER_OF_RELAYS; sensor++, pin++) {
// Register all sensors to gw (they will be created as child devices)
present(sensor, S_BINARY);"

correct?

thanks

lekeb

Thanks a lot, It works!!!

Here my code updated


// Enable debug prints to serial monitor
//#define MY_DEBUG 

// Enable and select radio type attached
#define MY_RADIO_NRF24

//#define MY_NODE_ID 7

#include <MySensors.h>

#define BARO_CHILD 0
#define BAR_SENSOR_ANALOG_PIN 0

unsigned long SLEEP_TIME = 60000;

MyMessage pressureMsg(BARO_CHILD, V_PRESSURE);
void setup(){
  
}

void presentation() {
  sendSketchInfo("pressure Sensor", "1.0");
  present(BARO_CHILD, S_BARO);
}

void loop() {
    
  int lecture_adc = analogRead(BAR_SENSOR_ANALOG_PIN);
  float pression = ((lecture_adc*5/1024.0)-0.50)/1.7;
  Serial.println(pression);        
  send(pressureMsg.set(pression, 2));
        
  sleep(SLEEP_TIME);
}

lekeb

Makes sense! My value didn't change over time
But what means this ligne

#define BAR_SENSOR_ANALOG_PIN 0

I guessed it was to declare AnalogRead on pin 0?

lekeb

Thanks for your answer.

Exactly, I don't get the same value

Here my full debug

0 MCO:BGN:INIT NODE,CP=RNNNA--,VER=2.1.1
3 TSM:INIT
4 TSF:WUR:MS=0
11 TSM:INIT:TSP OK
12 TSM:INIT:STATID=7
14 TSF:SID:OK,ID=7
16 TSM:FPAR
35 TSF:MSG:SEND,7-7-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2042 !TSM:FPAR:NO REPLY
2044 TSM:FPAR
2063 TSF:MSG:SEND,7-7-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2071 TSF:MSG:READ,0-0-7,s=255,c=3,t=8,pt=1,l=1,sg=0:0
2076 TSF:MSG:FPAR OK,ID=0,D=1
4071 TSM:FPAR:OK
4072 TSM:ID
4073 TSM:ID:OK
4075 TSM:UPL
4077 TSF:MSG:SEND,7-7-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
4083 TSF:MSG:READ,0-0-7,s=255,c=3,t=25,pt=1,l=1,sg=0:1
4088 TSF:MSG:PONG RECV,HP=1
4091 TSM:UPL:OK
4092 TSM:READY:ID=7,PAR=0,DIS=1
4097 TSF:MSG:SEND,7-7-0-0,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=OK:0100
4104 TSF:MSG:READ,0-0-7,s=255,c=3,t=15,pt=6,l=2,sg=0:0100
4110 TSF:MSG:SEND,7-7-0-0,s=255,c=0,t=17,pt=0,l=5,sg=0,ft=0,st=OK:2.1.1
4118 TSF:MSG:SEND,7-7-0-0,s=255,c=3,t=6,pt=1,l=1,sg=0,ft=0,st=OK:0
4128 TSF:MSG:READ,0-0-7,s=255,c=3,t=6,pt=0,l=1,sg=0:M
4134 TSF:MSG:SEND,7-7-0-0,s=255,c=3,t=11,pt=0,l=15,sg=0,ft=0,st=OK:pressure Sensor
4144 TSF:MSG:SEND,7-7-0-0,s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=OK:1.0
4151 TSF:MSG:SEND,7-7-0-0,s=0,c=0,t=8,pt=0,l=0,sg=0,ft=0,st=OK:
4157 MCO:REG:REQ
4160 TSF:MSG:SEND,7-7-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=OK:2
4166 TSF:MSG:READ,0-0-7,s=255,c=3,t=27,pt=1,l=1,sg=0:1
4171 MCO:PIM:NODE REG=1
4173 MCO:BGN:STP
4175 MCO:BGN:INIT OK,TSP=1
-0.29
4178 TSF:MSG:SEND,7-7-0-0,s=0,c=1,t=4,pt=7,l=5,sg=0,ft=0,st=OK:-0.29
4186 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255
4191 MCO:SLP:TPD
4192 MCO:SLP:WUP=-1
-0.29
4196 TSF:MSG:SEND,7-7-0-0,s=0,c=1,t=4,pt=7,l=5,sg=0,ft=0,st=OK:-0.29
4202 MCO:SLP:MS=60000,SMS=0,I1=255,M1=255,I2=255,M2=255
4207 MCO:SLP:TPD```

lekeb

Hello,

I need your help to write my first "My sensor" sketch.
I use this 5V sensor (link below) and pro-mini arduino to mesure water pressure inside my home water pipe.
https://fr.aliexpress.com/item/0-0-5-Mpa-Water-Gas-Pressure-Sensor-G1-4-DC-5V-Air-Compressor-Pressure-Transmitter/32660132491.html?spm=a2g0s.9042311.0.0.KxZ6lv

I used this simple sketch to read water pressure in Bar. I can read a pressure around 2.20 Bar

void setup() {
  Serial.begin(9600);
}

void loop() {
int lecture_adc;
float pression;

lecture_adc = analogRead(A0);
Serial.print("Sensor Value: ");
Serial.println(lecture_adc);
pression = (((lecture_adc*5/1024.0)-0.52)/1.7); //read pressure in Bar, remove 1.7 to read Voltage, divide 0.17 to read in  MPa        
Serial.print("Pression: ");
Serial.println(pression);

delay(1000);

Now, I tried to monitore my water pressure with my sensor and domoticz, that's why I wrote this sketch

// Enable debug prints to serial monitor
#define MY_DEBUG 

// Enable and select radio type attached
#define MY_RADIO_NRF24

#define MY_NODE_ID 7

#include <MySensors.h>

#define BARO_CHILD 0
#define BAR_SENSOR_ANALOG_PIN 0

unsigned long SLEEP_TIME = 60000;

MyMessage pressureMsg(BARO_CHILD, V_PRESSURE);
void setup(){
  
}

void presentation() {
  sendSketchInfo("pressure Sensor", "1.0");
  present(BARO_CHILD, S_BARO);
}

void loop() {
  int lecture_adc;
  float pression;

  lecture_adc = BAR_SENSOR_ANALOG_PIN;
  pression = ((lecture_adc*5/1024.0)-0.52)/1.7;
  Serial.println(pression);        
  send(pressureMsg.set(pression, 2));
        
  sleep(SLEEP_TIME);
}

But with this code, my node send as value -0.21 (check in DEBUG). I don't understand why.
Could you help me to understand what is wrong?

Thanks