Fehler in wait-funktion

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#define wait_flag = 0x00;

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void wait(unsigned int count);

void Timer1_Init(void);

void __attribute__((interrupt, no_auto_psv)) _T1Interrupt(void);

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int main (void){

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  ADPCFGbits.PCFG0 = 1;

  TRISBbits.TRISB0 = 0;

  LATBbits.LATB0 = 0;

...

  while(1){

    LATBbits.LATB0 = !LATBbits.LATB0;

    wait(200);

  }

}

void wait(unsigned int count)

{

    unsigned int countzahl;

    wait_flag = 1;

    countzahl = count/(0,00000006781684027777780*256*1000);

    PR1 = countzahl;

    TMR1 = 0;           // set timer to 0

    T1CONbits.TON = 1;

    while(wait_flag!=0){ }

}

{

    // PR1 and TCKPS are set to call interrupt every 1000ms.´

    // Period = PR1 * prescaler * Tcy = 57600 * 256 * 67ns = 1000ms

    T1CONbits.TON = 0;    // Clear Timer 1 configuration

    T1CONbits.TCKPS = 3;  // Set timer 1 prescaler (0=1:1, 1=1:8, 2=1:64, 3=1:256)

    T1CONbits.TSYNC = 1;  // Synchronize external clock input (1: Synchronize, 0: Do not synchronize)

    T1CONbits.TCS = 0;    // Timer Clock Source bit (1: External clock from pin TxCK, 0: Internal clock (Fosc/4))

    //PR1 = 57600/2;         // Set Timer 1 period (max value is 65535 (16 bit))  -> has to be set to 576 (10ms)

    IPC0bits.T1IP = 1;    // Set Timer 1 interrupt priority

    IFS0bits.T1IF = 0;    // Clear Timer 1 interrupt flag

    IEC0bits.T1IE = 1;    // Enable Timer 1 interrupt

    //T1CONbits.TON = 1;    // Turn on Timer 1 // made in _C1Interrupt(void)

}

void __attribute__((interrupt, no_auto_psv)) _T1Interrupt(void)

{

    wait_flag = 0;

    T1CONbits.TON = 0;  // stopts timer

    IFS0bits.T1IF = 0;  // Clear Timer 1 interrupt flag

}