Redefinition warning when Compiling for RFM69W-915 Radio

[JohnRob]

Hi,
I'm working on my first MySensors Node. My code is a simple read an analog input function. Now because my radio is a 915MHz version I must add a line to state such. When I do the compiler gives me a warning "warning: "MY_RFM69_FREQUENCY" redefined"

Now I know I am redefining the default radio frequency so the warning is understood, however I am wondering if I am coding is a clumsy manor to get this warning.
My Code:

// Sensor node code
// 2018-01-26  V_01b
// Target: Aarduino MiniWirelessW-915
//MySensors API V2.2.0
// from:  https://www.mysensors.org/download/sensor_api_20


#define MY_DEBUG
// *** Initialization *** //
#define MY_RADIO_RFM69
#include <MySensors.h>

#define MY_RFM69_FREQUENCY RF69_915MHZ
#define CHILD_ID 5
#define sensortype S_MULTIMETER
#define analoginputPIN A0
#define LEDPIN 9 //PB1 is pin 9 on ProMini

uint16_t analogPinRdg;

MyMessage msg_Voltage(CHILD_ID, V_VOLTAGE);

void setup()
{
pinMode(LEDPIN, OUTPUT);
digitalWrite(LEDPIN, HIGH);   // turn the LED on (doesn't work, may not get here)
}

void presentation()
{
  present(CHILD_ID, S_MULTIMETER);
}


void loop()
{
  
//  digitalWrite(LEDPIN, HIGH);   // turn the LED on (HIGH is the voltage level)
//  delay(1000);                       // wait for a second
//  digitalWrite(LEDPIN, LOW);    // turn the LED off by making the voltage LOW
    delay(1000);                       // wait for a second
  
  asm ("sbi %0, %1 \n": : "I" (_SFR_IO_ADDR(PINB)), "I" (PINB1)); // Toggle LED
  analogPinRdg = analogRead(analoginputPIN);
  send(msg_Voltage.set(analogPinRdg));
  

  wait(5000);    //unsigned long 
}```

[mfalkvidd]

@johnrob all defines for MySensors need to be done before including MySensors.h. Otherwise, they won't have any effect.

So move define MY_RFM69_FREQUENCY RF69_915MHZ a few lines up.

[JohnRob]

@mfalkvidd said in Redefinition warning when Compiling for RFM69W-915 Radio:

MySensors.h

Thank you.

I was under the impression that the RFM69 default frequency was 868Mhz and if I placed the "#define MY_RFM69_FREQUENCY RF69_915MHZ" before the MySensors.h the frequency would be reset to 868.

I'm guessing by your answer that this is not the case. Perhaps an if not defined.

[mfalkvidd]

@johnrob exactly. All MySensors defines are designed that way.