//* Configure PMC by enabling PWM clock
        AT91F_PWMC_CfgPMC ();    
    AT91F_PWMC_StopChannel(AT91C_BASE_PWMC,AT91C_PWMC_CHID0);
//    AT91C_BASE_PWMC->PWMC_MR = (( 0 << 8 ) | 13);
    AT91F_PWMC_CfgChannel(AT91C_BASE_PWMC,AT91C_PWMC_CHID0,1,13,6);
    AT91F_PWMC_StartChannel(AT91C_BASE_PWMC,AT91C_PWMC_CHID0);
        Tmp = AT91C_BASE_PWMC->PWMC_ISR;
        Tmp = Tmp;    
    //* Enabling a PWM output through the PIO
        AT91F_PIO_CfgPeriph(AT91C_BASE_PIOA,  AT91C_PA0_PWM0, 0);