C++ (Cpp) enet_hal_init_txbds 예제들

예제 #1

파일: EthDev_K64F.c 프로젝트: nyatla/mbedJS-dev

static void setTxDesc(int idx)
{
    enet_bd_struct_t *start = (enet_bd_struct_t *)_driver.tx_desc_start_addr;
    /* Setup descriptor and clear statuses */
    enet_hal_init_txbds(start + idx,idx ==(NUM_OF_RX_RING - 1));
    enet_hal_active_txbd(BOARD_DEBUG_ENET_INSTANCE);
}

예제 #2

파일: k64f_emac.c 프로젝트: Babody/mbed

/** \brief  Sets up the TX descriptor ring buffers.
 *
 *  This function sets up the descriptor list used for transmit packets.
 *
 *  \param[in]      netif  Pointer to driver data structure
 *  \returns               ERR_MEM if out of memory, ERR_OK otherwise
 */
static err_t k64f_tx_setup(struct netif *netif, enet_txbd_config_t *txbdCfg) {
  struct k64f_enetdata *k64f_enet = netif->state;
  enet_dev_if_t *enetIfPtr = (enet_dev_if_t *)&enetDevIf[BOARD_DEBUG_ENET_INSTANCE];
  uint8_t *txBdPtr;

  // Allocate TX descriptors
  txBdPtr = (uint8_t *)calloc(1, enet_hal_get_bd_size() * enetIfPtr->macCfgPtr->txBdNumber + ENET_BD_ALIGNMENT);
  if(!txBdPtr)
    return ERR_MEM;

  k64f_enet->tx_desc_start_addr = (uint8_t *)ENET_ALIGN((uint32_t)txBdPtr, ENET_BD_ALIGNMENT);
  k64f_enet->tx_consume_index = k64f_enet->tx_produce_index = 0;

  txbdCfg->txBdPtrAlign = k64f_enet->tx_desc_start_addr;
  txbdCfg->txBufferNum = enetIfPtr->macCfgPtr->txBdNumber;
  txbdCfg->txBufferSizeAlign = ENET_ALIGN(enetIfPtr->maxFrameSize, ENET_TX_BUFFER_ALIGNMENT);

  // Make the TX descriptor ring circular
  enet_hal_init_txbds(k64f_enet->tx_desc_start_addr + enet_hal_get_bd_size() * (ENET_TX_RING_LEN - 1), 1);

  return ERR_OK;
}