DSPIC33F SPI- Problem mit Highpegel an SDO

// ### Basic includes ###

#include "p33fxxxx.h"

#include "math.h"

char test=0;

char test2=0;

int main(void)

{

  // ## Initialisierung ##

  // Wählen, welche ANx PINS analog oder digital genutzt werden (0=analog)

  AD1PCFGL = 0b1111111111111111;  // 15...0 : as digital

  //SPI initialisiert: Mode 00, SDI PinRP0, SDO PinRP1, SCK PinRP2!

  SPI1CON1bits.CKE=0;

  SPI1CON1bits.CKP=0;

  SPI1CON1bits.MSTEN=1;  // Master

  SPI1CON1bits.SPRE=0;  // Divide by 8

  SPI1CON1bits.PPRE=0;  // Divide by 64

  SPI1CON2 = 0x0000;

  SPI1STAT = 0x8000;

  __builtin_write_OSCCONL(OSCCON & ~(1<<6));  //Unlock Registers

  RPINR20bits.SDI1R=0;//SDI

  RPOR0bits.RP1R=7;//SDO

  RPOR1bits.RP2R=8;//SCK

  __builtin_write_OSCCONL(OSCCON | (1<<6));  // Lock Registers again

  //In der Main Schleife steht folgendes:

  while(1)

  {

    while (test<256)

    {

      SPI1BUF = test;

        while (!SPI1STATbits.SPIRBF);

        test2 = SPI1BUF;

        test++;

      }    

    test=0;

   }

}