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Unable to instantiate classes / objects

Hi,

I am moving from Eclipse / GCC to Keil ARM-MDK / uVision4 (the "lite" version at present). I can compile, download and run simple C programs OK. But I wish to be able use C++ classes (objects), typically a few "static" objects that are instantiated as my code starts-up and then remain in existance and accessible to the rest of the program "forever".

However, it seems no matter how simple my classes, my code hangs as soon as I attempt to instantiate a class. I have prepared some simple code that demonstrates my problem, see below.

I am working with AT91SAM7X256 CPUs on Olimex SAM7-EX256 development boards and on custom boards. I have "told" uVision4 I am using a AT91SAM7X256 and it has copied the "SAM7.s" file into my project (the startup code).

I suspect my problem has to do with the Keil provided statup code - I think somehow it does not allow for object instantiation during program start-up ? Perhaps I need to tweak it to allow this, but I haven't found any explanation of how to do this. So any advice would be appreciated.

My sample code below compiles, downloads and runs on my hardware fine as long as I do not instantiate or reference the TestCounter class (that is, if I comment out lines 46 and 55). But with the instantiation enabled (line 46) the code compiles and downloads without error but the target system appears to hang at power on / does not start-up.

I would appeciate any assistance anyone can offer on this - perhaps a pointer to an article expaining how to make this work, or some working sample code, or an appropriately "tweaked" startup file.

Thanking you,

Martin.

#include ".\AT91SAM7X256.h"

void SetLcdBacklightOn(void);
void SetLcdBacklightOff(void);

class clsCounter                        // Simple class to demonstrate / test class instantiation problem
{
  private:
    int Count;

  public:
    clsCounter();                       // Class Constructor
    ~clsCounter();                      // Class Destructor
    void Reset(void);
    void Increment(void);
    int  GetCount(void);
};


clsCounter::clsCounter()                // Class Constructor - Initializes the internal count value to 0
{
  Count = 0;
}

clsCounter::~clsCounter()               // Class Destructor - No code is required
{

}

void clsCounter::Reset(void)            // Reset method - Resets the intenal count value back to 0
{
  Count = 0;
}

void clsCounter::Increment(void)        // Increment method - Increments the internal count value by 1
{
  Count++;
}

int clsCounter::GetCount(void)          // GetCount method - Returns the current internal count value
{
  return Count;
}


clsCounter TestCounter;                 // Instantiate an instance of the Counter Class


int main(void)
{
  *AT91C_WDTC_WDMR = AT91C_WDTC_WDDIS;  // Disable the Watchdog Timer

  *AT91C_PMC_PCER = 0xFFFFFFFF;         // Enable All Peripheral Clocks

  TestCounter.Increment();              // Make use of the class

  int i;
  while(1)                              // Endless Loop to Flash LCD Backlight at about 1Hz
  {
    SetLcdBacklightOn();                //   Turn the Backlight On
    for (i = 0; i < 5000; i++);         //   Wait about half a second
    SetLcdBacklightOff();               //   Turn the Backlight Off
    for (i = 0; i < 5000; i++);         //   Wait about half a second
  }

}

void SetLcdBacklightOn(void)
{
  *AT91C_PIOB_PER  = 0x00100000;        // Allocate I/O Pin PB20 to PIOB
  *AT91C_PIOB_OER  = 0x00100000;        // Configure it as an output to drive the LCD Backlight enable signal
  *AT91C_PIOB_SODR = 0x00100000;        // Drive it High to Enable the LCD Backlight
}

void SetLcdBacklightOff(void)
{
  *AT91C_PIOB_PER  = 0x00100000;        // Allocate I/O Pin PB20 to PIOB
  *AT91C_PIOB_OER  = 0x00100000;        // Configure it as an output to drive the LCD Backlight enable signal
  *AT91C_PIOB_CODR = 0x00100000;        // Drive it Low to Disable the LCD Backlight
}