WhyCan Forum(哇酷开发者社区)

void spi_write(unsigned char *buffer, int length)
{
  int i;
  int cnt;
  
  while(length)
  {

    if(length <= 64)
      cnt = length;
    else
      cnt = 64;
    //number of bytes burst
    *SPI0_MBC = cnt;
    //number of bytes to transmit
    *SPI0_MTC = cnt;
    *SPI0_BCC = cnt;
    //Load FIFO
    for(i=0;i<cnt;++i)
      *SPI0_TXD_BYTE = *buffer++;
    //Start
    *SPI0_TCR |= SPI_TCR_XCH_START;
    length -= cnt;
    while(*SPI0_TCR & SPI_TCR_XCH_START);
    *SPI0_FCR |= SPI_FCR_RX_FIFO_RST;
    while(*SPI0_FCR & SPI_FCR_RX_FIFO_RST);
  }
}

void LCD_Fill(uint16_t Color)
{
    uint16_t i, j;
    for (i = 0; i < LCD_WIDTH; i++)
        for (j = 0; j < LCD_HEIGHT; j++)
        {
            *(volatile uint16_t *) (disp_buf + j * LCD_WIDTH + i) = Color;
        }

    SetAddressWindow(0, 0, LCD_WIDTH - 1, LCD_HEIGHT - 1);
    spi_write(disp_buf,LCD_WIDTH * LCD_HEIGHT*2);

}