Can't get I2C to work

// Initial settings
RIIC1.RIICnCR1.UINT8[0] &= ~RIICn_RIICnCR1_ICE; // Clear ICE: output pins not driven
RIIC1.RIICnCR1.UINT8[0] |= RIICn_RIICnCR1_IICRST; // Set IICRST: RIIC reset
RIIC1.RIICnCR1.UINT8[0] |= RIICn_RIICnCR1_ICE; // Set ICE: Internal reset

// Bit rate
RIIC1.RIICnMR1.UINT8[0] |= 0x10; // P0/2
RIIC1.RIICnBRL.UINT8[0] = 18; // TODO
RIIC1.RIICnBRH.UINT8[0] = 19; // TODO
RIIC1.RIICnFER.UINT8[0] |= RIICn_RIICnFER_NACKE; // Everything else default

// Set interrupts
RIIC1.RIICnIER.UINT32 = 0; // TODO

// Release reset
RIIC1.RIICnCR1.UINT8[0] &= ~RIICn_RIICnCR1_IICRST;

bool hasError = false;

// Wait for the bus to be free
while ((RIIC1.RIICnCR2.UINT8[0] & RIICn_RIICnCR2_BBSY) > 0);

// Issue start condition
RIIC1.RIICnCR2.UINT8[0] |= RIICn_RIICnCR2_ST;

// Wait for transmit buffer empty
while (!hasError)
{
  if ((RIIC1.RIICnSR2.UINT8[0] & RIICn_RIICnSR2_NACKF) > 0)
  {
    hasError = true;
  }
  else if ((RIIC1.RIICnSR2.UINT8[0] & RIICn_RIICnSR2_TDRE) > 0)
  {
    break;
  }
}

if (!hasError)
{
  // Transmit the slave address and write bit
  RIIC1.RIICnDRT.UINT8[0] = (POT_A_ADDRESS << 1);
}

// Wait for transmit buffer empty
while (!hasError)
{
  if ((RIIC1.RIICnSR2.UINT8[0] & RIICn_RIICnSR2_NACKF) > 0)
  {
    hasError = true;
  }
  else if ((RIIC1.RIICnSR2.UINT8[0] & RIICn_RIICnSR2_TDRE) > 0)
  {
    break;
  }
}

if (!hasError)
{
  // Transmit the command
  RIIC1.RIICnDRT.UINT8[0] = 0x00;
}

// Wait for transmit buffer empty
while (!hasError)
{
  if ((RIIC1.RIICnSR2.UINT8[0] & RIICn_RIICnSR2_NACKF) > 0)
  {
    hasError = true;
  }
  else if ((RIIC1.RIICnSR2.UINT8[0] & RIICn_RIICnSR2_TDRE) > 0)
  {
    break;
  }
}

if (!hasError)
{
  // Transmit the value
  RIIC1.RIICnDRT.UINT8[0] = value;

  // Wait for data transmitted
  while ((RIIC1.RIICnSR2.UINT8[0] & RIICn_RIICnSR2_TEND) == 0);
}

// Reset stop detection flag
RIIC1.RIICnSR2.UINT32 &= ~RIICn_RIICnSR2_STOP;

// Issue stop condition
RIIC1.RIICnCR2.UINT32 |= RIICn_RIICnCR2_SP;

// Wait for stopped
while ((RIIC1.RIICnSR2.UINT32 & RIICn_RIICnSR2_STOP) == 0);

// Reset registers
RIIC1.RIICnSR2.UINT32 &= ~RIICn_RIICnSR2_NACKF;
RIIC1.RIICnSR2.UINT32 &= ~RIICn_RIICnSR2_STOP;