Compile error

[carpov]

Re: Water Flow sensor

HI there

I've got problem with scatch posted above. I've got error after compiling:

C:\Users\Jacek\Documents\Arduino\libraries\MySensors/MySensors.h:328:2: error: #error No forward link or gateway feature activated. This means nowhere to send messages! Pretty pointless.

 #error No forward link or gateway feature activated. This means nowhere to send messages! Pretty pointless.

  ^

exit status 1
Compile error for Arduino/Genuino Uno.``

`Any ideas?

[gohan]

you need to enable one the following defines

#define MY_RADIO_NRF24
//#define MY_RADIO_NRF5_ESB
//#define MY_RADIO_RFM69
//#define MY_RADIO_RFM95

[carpov]

Nothing change to me.
I put
#define MY_GATEWAY_SERIAL (I use usb connection)

Error still occure :(

[gohan]

wait a second? Are making a gateway without radio or a node?
check that #define MY_GATEWAY_SERIAL is written before #include <MySensors.h>?

[carpov]

Hi there

Yes I made gateway without radio. I need connect hallefect flow sensor to Domoticz.
I use Arduino (as node) connected to RPi (controller) via USB cable.

I already have good working skatch - measure water flow with 5% accuracy. Now I need to add gatewy feature to that sketch.

I found similar skatch (TESTING SKATCH) in web https://forum.mysensors.org/topic/1282/water-flow-sensor/2
and I wanted to check this solution. I need only current flow, i don't need counter.

I checked and change positions of #define MY_GATEWAY_SERIAL and #include <MySensors.h>.
now MY_GATEWAY is before MySensors.h...............and I have new error

sketch_mar26a:17: error: 'MySensor' does not name a type

 MySensor gw;

 ^

C:\Users\Jacek\Desktop\sketch_mar26a\sketch_mar26a.ino: In function 'void setup()':

sketch_mar26a:26: error: 'gw' was not declared in this scope

   gw.begin(); 

   ^

C:\Users\Jacek\Desktop\sketch_mar26a\sketch_mar26a.ino: In function 'void loop()':

sketch_mar26a:56: error: 'gw' was not declared in this scope

       gw.send(flowMsg.set(flow));

       ^

exit status 1
'MySensor' does not name a type```

And this is my TESTING sketch

Insert Code Here
```#define MY_GATEWAY_SERIAL

#include <SPI.h>
#include <MySensors.h>  


#define DIGITAL_INPUT_SENSOR 3                  // The digital input you attached your sensor.  (Only 2 and 3 generates interrupt!)
#define SENSOR_INTERRUPT DIGITAL_INPUT_SENSOR-2        // Usually the interrupt = pin -2 (on uno/nano anyway)

#define CHILD_ID 1                              // Id of the sensor child

int READ_INTERVAL = 3;           // Read interval to count the pulses (in seconds). 

long lastReadStart;
int flow;

MySensor gw;
MyMessage flowMsg(CHILD_ID,V_FLOW);


int READ_INTERVAL_MILLIS=READ_INTERVAL * 1000;        // Just to simple the math!
volatile unsigned long pulseCount = 0;   

void setup()  
{  
  gw.begin(); 

  // Send the sketch version information to the gateway and Controller
  gw.sendSketchInfo("Water Meter", "1.2");

  // Register this device as Waterflow sensor
  gw.present(CHILD_ID, S_WATER);       

  pulseCount = 0;

  lastReadStart = millis();

  attachInterrupt(SENSOR_INTERRUPT, onPulse, RISING);
}


void loop()     
{ 
  unsigned long currentTime = millis();
  

  if (currentTime - lastReadStart > READ_INTERVAL_MILLIS)
  {
    flow = pulseCount*60/READ_INTERVAL;  //Need to change here for the G type
    lastReadStart=currentTime;
     


      Serial.print("l/hour:");
      Serial.println(flow);
      gw.send(flowMsg.set(flow));
      
      pulseCount = 0;
  }
}


void onPulse()
{
  pulseCount++; 
}

[gohan]

That example was written for MySensors 1.5. There is a post with instructions to convert code for MySensors 2.x

[mfalkvidd]

https://forum.mysensors.org/topic/4276/converting-a-sketch-from-1-5-x-to-2-0-x