Olimex 2378 LCD

void SPIInit( void )

{

  SCS |= (1UL<<0); // set GPIOM in SCS for fast IO

// Assign GPIO to SSP0 - SCK, MOSI, MISO

  PINSEL3 |= 0x00000300;  // SCK0 - BIT [9:8]

  PINSEL3 |= 0x0000C000;  // MISO0 - Bit[15:14]

  PINSEL3 |= 0x00030000;  // MOSI0 - Bit [17:16]

  // Chip select

  FIO1DIR |= LCD_CS_MASK;    //P1.21 SSEL0

  FIO1SET |= LCD_CS_MASK;    //LCD CS set

  PCONP   |= (1UL<<21);    // PCPCONP Bit 21 für SSPO

  SSP0CR1 = 0;

  SSP0CR1 &= (~0x02);      // Bit 1 SSE = 0 disabled 

  SSP0CR1 &= (~0x01);      // Disable Loop Back Mode

  SSP0CR1 &= (~0x04);      // Enable Master Mode

  SSP0CR0 = 0;

  SSP0CR0 &= (~0x0030);    // Enable SPI Mode

  SSP0CR0 &= (~0x0040);

  SSP0CR0 &= (~0x0080);

  SSP0IMSC = 0;        // Disable all interrupts

  SSP0DMACR = 0;        // Disable DMA

  SSP0CR1 |= (1UL<<1);    // SSP enable

   for (uint32_t i = 0; i < 8; i++ )

    {

      volatile uint32_t Dummy = SSP0DR; // clear the RxFIFO

    }

   SSP0CPSR = 0x24;       // 2Mhz

   SSP0CR0 = ((SSP0CR0&(~0x0007))|(0x0008));  // 9 Bit Transfer Value 1000 Bit[3:0]

}

void WriteSpiCommand(volatile unsigned int command) 

{

  // wait for the previous transfer to complete

  while((SSP0SR & (1<<0)) == 0);    // wait till transmit FIFO ist empty

  //wait 5ms

  delay((void*)50);

  // clear bit 8 - indicates a "command"

  command = (command & ~0x0100);

  // send the command

  SSP0DR = command;

}

void WriteSpiData(volatile unsigned int data) 

{

  // wait for the transfer to complete

  while((SSP0SR & (1<<0)) == 0);

  //wait 5ms

  delay((void*)50);

  // set bit 8, indicates "data"

  data = (data | 0x0100);

  // send the data

  SSP0DR = data;

}