Форум РадиоКот

Код: Выделить всё

unsigned char SPI0_exchangeData(unsigned char data)
{
	SPI0.DATA = data;

	while (!(SPI0.INTFLAGS & SPI_IF_bm))  /* waits until data is exchanged*/
	{		;}

	return SPI0.DATA;
}
void SPI_Init()
{
	SPI0.CTRLA = SPI_DORD_bm   /* LSB is transmitted first  */        
	    | SPI_ENABLE_bm          /* Enable module */
		| SPI_CLK2X_bm			/* double-speed on*/
	    | SPI_MASTER_bm          /* SPI module in Master mode */
	    | SPI_PRESC_DIV64_gc;    /* System Clock divided by 64 */  //надо f SCLK ~0.5МГц < 1Mhz  20Мгц/64*2   = 0,312МГц *2  = 0,625МГц   

	SPI0.CTRLB = SPI_MODE1_bm |SPI_SSD_bm |SPI_BUFEN_bm;
}
 void drow_line(unsigned char numline, unsigned char line[23])
{
	unsigned char  i;
	retdata = SPI0_exchangeData(numline);
	for (i=0; i<23; i++)
		SPI0_exchangeData(line[i]);
		
	retdata = SPI0_exchangeData(0x00); //dummy data
	retdata = SPI0_exchangeData(0x00);
	
}
void main()
{
	unsigned char line[23], i;
        ...
        SPI_Init();

	
       while(1)
      {
		for (i=0;i<23;i++)
				line [i] = 0x00; //Black;
	//			line [i] = 0xFF;// White;
	
		SS_ON;//SS_OFF;
		retdata = SPI0_exchangeData(UpdateMode);
		for (i=1; i<=15; i++)
				drow_line (i, line);

		retdata = SPI0_exchangeData(0x00); //dummy data

		WaitIniDisp = 1;
		while(WaitIniDisp); //ждем 1мс		
		
		SS_OFF;//SS_ON;
         }

}