#include <p33FJ128MC706.h>
#include <dsp.h>
#include <libpic30.h>
#include "..\h\manualSPI.h"

void SPI3_send(int data)
{      
        int i;

        for(i=0;i<16;i++) {
                SPI3_OUT =((data >> i) & 0x01);
                delay_ms(10);
                SPI3_CLK = 1;
                delay_ms(10);
                SPI3_CLK = 0;
                //data >>= 1;
        }
}

void SPI3_start(void)
{
        SPI3_CS = 1;
        delay_ms(10);
        SPI3_CLK = 1;
        delay_ms(10);
        SPI3_CS = 0;
        delay_ms(10);
}

void SPI3_end(void)
{      
        //delay_ms(10);
        SPI3_CS = 1;
        delay_ms(10);
}


void init_dds(void)
{      
        int data;
        TRISD = 0;
       
        data = 0x2108;                                                  // Reset registers
        SPI3_start();
        SPI3_send(data);
        SPI3_end();
       
        data = 0x75C3;                                                  // 14 LSB's of FREQ0
        SPI3_start();
        SPI3_send(data);
        SPI3_end();
        data = 0x40A3;                                                  // 14 MSB's of FREQ0
        SPI3_start();
        SPI3_send(data);
        SPI3_end();

        data = 0x8000;                                                  // 14 LSB's of FREQ1 = 0
        SPI3_start();
        SPI3_send(data);
        SPI3_end();
        data = 0x8000;                                                  // 14 MSB's of FREQ1 = 0
        SPI3_start();
        SPI3_send(data);
        SPI3_end();

        data = 0xC000;                                                  // PHASE0 = 0
        SPI3_start();
        SPI3_send(data);
        SPI3_end();
        data = 0xE000;                                                  // PHASE1 = 0
        SPI3_start();                                                  
        SPI3_send(data);
        SPI3_end();

        data = 0x2008;                                                  // Exit reset
        SPI3_start();
        SPI3_send(data);
        SPI3_end();
}