Function MSC_ErasePage

bsp/efm32/Libraries/emlib/src/em_msc.c:150–199

#pragma diag_suppress=Ta023
#endif
msc_Return_TypeDef MSC_ErasePage(uint32_t *startAddress)
{
  int timeOut = MSC_PROGRAM_TIMEOUT;

  /* Address must be aligned to pages */
  EFM_ASSERT((((uint32_t)startAddress) & 0x1FF) == 0);

  /* Enable writing to the MSC */
  MSC->WRITECTRL |= MSC_WRITECTRL_WREN;

  /* Load address */
  MSC->ADDRB    = (uint32_t)startAddress;
  MSC->WRITECMD = MSC_WRITECMD_LADDRIM;

  /* Check for invalid address */
  if (MSC->STATUS & MSC_STATUS_INVADDR)
  {
    /* Disable writing to the MSC */
    MSC->WRITECTRL &= ~MSC_WRITECTRL_WREN;
    return mscReturnInvalidAddr;
  }

  /* Check for write protected page */
  if (MSC->STATUS & MSC_STATUS_LOCKED)
  {
    /* Disable writing to the MSC */
    MSC->WRITECTRL &= ~MSC_WRITECTRL_WREN;
    return mscReturnLocked;
  }

  /* Send erase page command */
  MSC->WRITECMD = MSC_WRITECMD_ERASEPAGE;

  /* Wait for the erase to complete */
  while ((MSC->STATUS & MSC_STATUS_BUSY) && (timeOut != 0))
  {
    timeOut--;
  }

  if (timeOut == 0)
  {
    /* Disable writing to the MSC */
    MSC->WRITECTRL &= ~MSC_WRITECTRL_WREN;
    return mscReturnTimeOut;
  }

  /* Disable writing to the MSC */
  MSC->WRITECTRL &= ~MSC_WRITECTRL_WREN;
  return mscReturnOk;
}
#if defined( __ICCARM__ )
#pragma diag_default=Ta022
#pragma diag_default=Ta023