Svenska ElektronikForumet

Kod: Markera allt

C:\Users\danie>arp -a 192.168.1.15

Interface: 192.168.1.34 --- 0xc
  Internet Address      Physical Address      Type
  192.168.1.15          80-80-a2-ae-13-41     dynamic

C:\Users\danie>

Kod: Markera allt

/**
  * @brief  Write a value to a PHY register through the MDIO interface.
  * @param  DevAddr: PHY port address
  * @param  RegAddr: PHY register address
  * @param  RegVal: Value to be written
  * @retval 0 if OK -1 if Error
  */
int32_t ETH_PHY_IO_WriteReg(uint32_t DevAddr, uint32_t RegAddr, uint32_t RegVal)
{
  if(HAL_ETH_WritePHYRegister(&heth, DevAddr, RegAddr, RegVal) != HAL_OK)
  {
    return -1;
  }

  return 0;
}

Kod: Markera allt

/**
  * @brief  Read a received packet.
  * @param  heth: pointer to a ETH_HandleTypeDef structure that contains
  *         the configuration information for ETHERNET module
  * @param  pAppBuff: Pointer to an application buffer to receive the packet.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_ETH_ReadData(ETH_HandleTypeDef *heth, void **pAppBuff)
{
  uint32_t descidx;
  ETH_DMADescTypeDef *dmarxdesc;
  uint32_t desccnt = 0U;
  uint32_t desccntmax;
  uint32_t bufflength;
  uint8_t rxdataready = 0U;


  if (pAppBuff == NULL)
  {
    heth->ErrorCode |= HAL_ETH_ERROR_PARAM;
    return HAL_ERROR;
  }

  if (heth->gState != HAL_ETH_STATE_STARTED)
  {
    return HAL_ERROR;
  }

  descidx = heth->RxDescList.RxDescIdx;
  dmarxdesc = (ETH_DMADescTypeDef *)heth->RxDescList.RxDesc[descidx];
  desccntmax = ETH_RX_DESC_CNT - heth->RxDescList.RxBuildDescCnt;

  /* Check if descriptor is not owned by DMA */
  while ((READ_BIT(dmarxdesc->DESC0, ETH_DMARXDESC_OWN) == (uint32_t)RESET) && (desccnt < desccntmax)
         && (rxdataready == 0U))
  {
    if (READ_BIT(dmarxdesc->DESC0,  ETH_DMARXDESC_LS)  != (uint32_t)RESET)
    {
      /* Get timestamp high */
      heth->RxDescList.TimeStamp.TimeStampHigh = dmarxdesc->DESC6;
      /* Get timestamp low */
      heth->RxDescList.TimeStamp.TimeStampLow  = dmarxdesc->DESC7;
    }
    if ((READ_BIT(dmarxdesc->DESC0, ETH_DMARXDESC_FS) != (uint32_t)RESET) || (heth->RxDescList.pRxStart != NULL))
    {
      /* Check first descriptor */
      if (READ_BIT(dmarxdesc->DESC0, ETH_DMARXDESC_FS) != (uint32_t)RESET)
      {
        heth->RxDescList.RxDescCnt = 0;
        heth->RxDescList.RxDataLength = 0;
      }

      /* Check if last descriptor */
      bufflength = heth->Init.RxBuffLen;
      if (READ_BIT(dmarxdesc->DESC0, ETH_DMARXDESC_LS) != (uint32_t)RESET)
      {
        /* Get the Frame Length of the received packet: substruct 4 bytes of the CRC */
        bufflength = ((dmarxdesc->DESC0 & ETH_DMARXDESC_FL) >> ETH_DMARXDESC_FRAMELENGTHSHIFT) - 4U;

        /* Save Last descriptor index */
        heth->RxDescList.pRxLastRxDesc = dmarxdesc->DESC0;

        /* Packet ready */
        rxdataready = 1;
      }

      /* Link data */
      WRITE_REG(dmarxdesc->BackupAddr0, dmarxdesc->DESC2);
#if (USE_HAL_ETH_REGISTER_CALLBACKS == 1)
      /*Call registered Link callback*/
      heth->rxLinkCallback(&heth->RxDescList.pRxStart, &heth->RxDescList.pRxEnd,
                           (uint8_t *)dmarxdesc->BackupAddr0, bufflength);
#else
      /* Link callback */
      HAL_ETH_RxLinkCallback(&heth->RxDescList.pRxStart, &heth->RxDescList.pRxEnd,
                             (uint8_t *)dmarxdesc->BackupAddr0, (uint16_t) bufflength);
#endif  /* USE_HAL_ETH_REGISTER_CALLBACKS */
      heth->RxDescList.RxDescCnt++;
      heth->RxDescList.RxDataLength += bufflength;

      /* Clear buffer pointer */
      dmarxdesc->BackupAddr0 = 0;
    }

    /* Increment current rx descriptor index */
    INCR_RX_DESC_INDEX(descidx, 1U);
    /* Get current descriptor address */
    dmarxdesc = (ETH_DMADescTypeDef *)heth->RxDescList.RxDesc[descidx];
    desccnt++;
  }

  heth->RxDescList.RxBuildDescCnt += desccnt;
  if ((heth->RxDescList.RxBuildDescCnt) != 0U)
  {
    /* Update Descriptors */
    ETH_UpdateDescriptor(heth);
  }

  heth->RxDescList.RxDescIdx = descidx;

  if (rxdataready == 1U)
  {
    /* Return received packet */
    *pAppBuff = heth->RxDescList.pRxStart;
    /* Reset first element */
    heth->RxDescList.pRxStart = NULL;

    return HAL_OK;
  }

  /* Packet not ready */
  return HAL_ERROR; <<<<------------------
}