EFSL + MSP430

Hallo!

Ich versuche EFSL auf den MSP430 zu "portieren". Leider bekomme ich
beim efs_init immer -1 zurück. Hier mein Harsware-Endpoint (basiert auf
dem vom atmega128):
<c>
#include <io.h>
#include "interfaces/msp430.h"
#include "interfaces/sd.h"

esint8 if_initInterface(hwInterface* file, eint8* opts)
{
  if_spiInit(file);
  if(sd_Init(file)<0)
    {
      DBG((TXT("Card failed to init, breaking up...\n")));
      return(-1);
    }
  if(sd_State(file)<0){
    DBG((TXT("Card didn't return the ready state, breaking
up...\n")));
    return(-2);
  }
  file->sectorCount=4; /* FIXME ASAP!! */
  DBG((TXT("Init done...\n")));
  return(0);
}

esint8 if_readBuf(hwInterface* file,euint32 address,euint8* buf)
{
  return(sd_readSector(file,address,buf,512));
}

esint8 if_writeBuf(hwInterface* file,euint32 address,euint8* buf)
{
  return(sd_writeSector(file,address, buf));
}

esint8 if_setPos(hwInterface* file,euint32 address)
{
  return(0);
}

void if_spiInit(hwInterface *iface)
{
  U0CTL |= SWRST;
  ME1 |= USPIE0;
  P3SEL |= 0x0E;
  P3DIR |= 0x01;
  U0CTL |= CHAR + SYNC + MM;
  U0TCTL |= SSEL_3 + STC;
  U0BR0 = 0x02;
  U0BR1 = 0x00;
  U0MCTL = 0x00;
  U0CTL &= ~SWRST;
  P3DIR |= 0x01;
  P3SEL |= 0x0E;
  P3OUT = 0x01;
}

euint8 if_spiSend(hwInterface *iface, euint8 outgoing)
{
  euint8 incomeing;
  P3OUT = 0x00;
  U0TXBUF = 0xFF;
  while(!(U0TCTL & TXEPT));
  //for(outgoing = 0; outgoing < 0xFF; outgoing++);
  incomeing = U0RXBUF;
  P3OUT = 0x01;
  return incomeing;
}
</c>

Hat hier schon jemand EFSL erfolgreich auf einem MSP430 eingesetzt?