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Код: Выделить всё

#include <avr/io.h>
#include <avr/delay.h>

#define SHIFT_REGISTER DDRB
#define SHIFT_PORT PORTB
#define DATA (1<<PB3)     //MOSI (SI)
#define LATCH (1<<PB2)        //SS   (RCK)
#define CLOCK (1<<PB5)        //SCK  (SCK)

void pins(unsigned char bits, unsigned char chislo){

	for(int i=0; i <= chislo; i++){
	SPDR = bits;
	while(!(SPSR & (1<<SPIF)));
	}
}

int main(void)
{
//int ledar[10] = { 0b1011001111001111, 0b1011000110101101, 0b1011010100111010, 0b0101110010101101, 0b1010110011010111, 0b0101110010101110, 0b0101011010011010, 0b0101101101010100, 0b0101101100101010, 0b0101011001010011 };
//int iArray[4] = { 0b00001111, 0b00111111, 0b11110000, 0b11111100 };

  //Setup IO
  	    SHIFT_REGISTER |= (DATA | LATCH | CLOCK); //Set control pins as outputs
  	    SHIFT_PORT &= ~(DATA | LATCH | CLOCK);        //Set control pins low

  	    //Setup SPI
  	    SPCR = (1<<SPE) | (1<<MSTR);  //Start SPI as Master

  while(1)
  {

	    //Pull LATCH low (Important: this is necessary to start the SPI transfer!)
	    SHIFT_PORT &= ~LATCH;

	    pins(225,2);

	    //Toggle latch to copy data to the storage register
	    SHIFT_PORT |= LATCH;
	    SHIFT_PORT &= ~LATCH;
	    _delay_ms(800);

	    //################################################################## loop1



	    	     	    //Pull LATCH low (Important: this is necessary to start the SPI transfer!)
	    	     	      SHIFT_PORT &= ~LATCH;

	    	     	      pins(0,1);

	    	     	      //Toggle latch to copy data to the storage register
	    	     	      SHIFT_PORT |= LATCH;
	    	     	      SHIFT_PORT &= ~LATCH;
	    	     	      _delay_ms(100);

	    //################################################################## loop1
  }
}

Код: Выделить всё

//Toggle latch to copy data to the storage register
	    SHIFT_PORT |= LATCH;
	    SHIFT_PORT &= ~LATCH;
	    _delay_ms(800);

Код: Выделить всё

void pins(unsigned char bits, unsigned char chislo){

Код: Выделить всё

void SPI_MasterTransmit(char cData)
{
/* Start transmission */
SPDR = cData;
/* Wait for transmission complete */
while(!(SPSR & (1<<SPIF)))
;
}

Код: Выделить всё

uint16_t data = 350;
SPI_MasterTransmit( data & 0xFF );
SPI_MasterTransmit( data >> 8 );