B4R Question Frequency measuring on MEGA 2560

#Region Project Attributes
    #AutoFlushLogs: True
    #CheckArrayBounds: True
    #StackBufferSize: 300
#End Region

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'Public variables can be accessed from all modules.
    Public Serial1 As Serial
    End Sub

Private Sub AppStart
    Serial1.Initialize(115200)
    Log("Counting pulses during a fixed time")
   
    
    RunNative("setup",Null)
    Delay(100)
    AddLooper("Looper1")
End Sub

Private Sub Looper1
    RunNative("loop",Null)
End Sub



#if C


#include <FreqCount.h>

void setup(B4R::Object* o){

   FreqCount.begin(1000);  // Gate intervall 1000 ms
}


void loop(B4R::Object* o){
    
if (FreqCount.available()) {
    unsigned long count = FreqCount.read();
    Serial.println(count);   
    }
}

#End if