AT91C_BASE_PMC->PMC_PCER     = 1<<2 | 1<<5;                            //PIOA, SPI Peripheral Clock Enable    
    
AT91C_BASE_PIOA->PIO_PDR     = 1<<11 | 1<<12 | 1<<13 | 1<<14;        //Disables PIOA Control,enables peripheral control
AT91C_BASE_PIOA->PIO_ASR     = 1<<11 | 1<<12 | 1<<13 | 1<<14;        //Peripheral A select    
    
T91C_BASE_SPI->SPI_MR        = AT91C_SPI_MSTR | 14<<16;        //Master mode | Fixed Peripheral Select - NPCS0, PCS = xxx0 NPCS[3:0] = 1110
AT91C_BASE_SPI->SPI_CSR[0]   = 48<<8;                                //SPCK Baudrate
AT91C_BASE_SPI->SPI_CR       = 1;                                    //SPI Enable

AT91C_BASE_SPI->SPI_TDR      = 100;                                    //Data

AT91C_BASE_PMC->PMC_PCER     = AT91C_ID_PIOA | AT91C_ID_SPI;                            //PIOA, SPI Peripheral Clock Enable    
    
AT91C_BASE_PIOA->PIO_PDR     = AT91C_PIO_PA11 | AT91C_PIO_PA12 | AT91C_PIO_PA13 | AT91C_PIO_PA14;        //Disables PIOA Control,enables peripheral control
AT91C_BASE_PIOA->PIO_ASR     = AT91C_PIO_PA11 | AT91C_PIO_PA12 | AT91C_PIO_PA13 | AT91C_PIO_PA14;        //Peripheral A select
AT91C_BASE_SPI->SPI_CR        = AT91C_SPI_SPIEN;

AT91PS_SPI SPI0 = AT91C_BASE_SPI;

AT91F_SPI_CfgPIO();
AT91F_SPI_CfgPMC();
AT91F_SPI_Enable(SPI0);

AT91C_BASE_PMC->PMC_PCER     = (1UL<<AT91C_ID_PIOA) | (1UL<<AT91C_ID_SPI);                            //PIOA, SPI Peripheral Clock Enable    
    
AT91C_BASE_PIOA->PIO_PDR     = AT91C_PIO_PA11 | AT91C_PIO_PA12 | AT91C_PIO_PA13 | AT91C_PIO_PA14;        //Disables PIOA Control,enables peripheral control
AT91C_BASE_PIOA->PIO_ASR     = AT91C_PIO_PA11 | AT91C_PIO_PA12 | AT91C_PIO_PA13 | AT91C_PIO_PA14;        //Peripheral A select

AT91C_BASE_SPI->SPI_CSR[0]   = (48<<8) | AT91C_SPI_NCPHA;                                //SPCK Baudrate
AT91C_BASE_SPI->SPI_MR        = AT91C_SPI_MSTR | AT91C_SPI_MODFDIS;
AT91C_BASE_SPI->SPI_CR        = AT91C_SPI_SPIEN;

AT91C_BASE_PMC->PMC_PCER     = (1UL<<AT91C_ID_PIOA) | (1UL<<AT91C_ID_SPI);                            //PIOA, SPI Peripheral Clock Enable