STM32H7 MAC数据发送时时出错

hrc2014a · 发表于 2022-5-9 19:41:21

本帖最后由 hrc2014a 于 2022-5-9 19:47 编辑

STM32H7 MAC数据发送时时出错

[STMH7 MAC + LAN8720]
STM32H7 MAC数据发送时时出错如下图所示

目前还没上LWIP，只是MAC初始化后单纯的想测试一下收发

以下是MAC初始化代码

void MX_ETH_Init(void)
{

      ETH_MACConfigTypeDef MACConf;
      uint32_t regvalue = 0;
      unsigned int ret = -1;
  heth.Instance = ETH;
  heth.Init.MACAddr[0] = 0x00;
  heth.Init.MACAddr[1] = 0x80;
  heth.Init.MACAddr[2] = 0xE1;
  heth.Init.MACAddr[3] = *(unsigned char *)(UID_BASE + 4);
  heth.Init.MACAddr[4] = *(unsigned char *)(UID_BASE + 2);
  heth.Init.MACAddr[5] = *(unsigned char *)(UID_BASE + 0);
  heth.Init.MediaInterface = HAL_ETH_RMII_MODE;
  heth.Init.TxDesc = DMATxDscrTab;
  heth.Init.RxDesc = DMARxDscrTab;
  heth.Init.RxBuffLen = 1524;

  /* USER CODE BEGIN MACADDRESS */

  /* USER CODE END MACADDRESS */
      __HAL_RCC_D2SRAM3_CLK_ENABLE();
      lan8720_reset();

      ret = HAL_ETH_Init(&heth);
  if ( ret != HAL_OK)
  {
Error_Handler();
  }
//HAL_ETH_Start_IT(&heth);

  memset(&TxConfig, 0 , sizeof(ETH_TxPacketConfig));
  TxConfig.Attributes = ETH_TX_PACKETS_FEATURES_CSUM | ETH_TX_PACKETS_FEATURES_CRCPAD;
  TxConfig.ChecksumCtrl = ETH_CHECKSUM_IPHDR_PAYLOAD_INSERT_PHDR_CALC;
  TxConfig.CRCPadCtrl = ETH_CRC_PAD_INSERT;
  /* USER CODE BEGIN ETH_Init 2 */

  /* USER CODE END ETH_Init 2 */



      for (int idx = 0; idx < ETH_RX_DESC_CNT; idx++)
{
      HAL_ETH_DescAssignMemory(&heth, idx, &Rx_Buff[idx][0], NULL);
}

            HAL_ETH_SetMDIOClockRange(&heth);

      if(lan8720_SW_RESET() != HAL_OK)
      {
                     LOG_G("LAN8720 SW RESET ERROR\r\n");
                     return;
      }

      lan8720_check_SW_RESET_Done();
      my_delay_ms(2000);
      lan8720_AUTO_NEGOTIATION_enable(ENABLE_AUTO_NEGOTIATION);
  HAL_ETH_GetMACConfig(&heth, &MACConf);
  MACConf.DuplexMode = ETH_FULLDUPLEX_MODE;
  MACConf.Speed = ETH_SPEED_100M;
  HAL_ETH_SetMACConfig(&heth, &MACConf);
  HAL_ETH_Start_IT(&heth);

}

以下是发送代码
void bsp_eth_send(ETH_BufferTypeDef * Txbuffer, int frameLen)
{

            int i;
      TxConfig.Length=frameLen;
TxConfig.TxBuffer=Txbuffer;

            LOG_G("===========================================\r\n");
            for(i = 0; i < ETH_TX_DESC_CNT; i++)
            {
                              if(Txbuffer.buffer == NULL)
                                    continue;

                                    show_log_add_head("NET SEND:", Txbuffer.buffer, Txbuffer.len);
                                    show_log();
            }
            LOG_G("===========================================\r\n");

// SCB_CleanInvalidateDCache(); //无效化并清除Dcache
if(HAL_ETH_Transmit(&heth, &TxConfig, 1000) == HAL_OK)
            {
                     LOG_G("MAC send successful...\r\n");
            } else {

                     LOG_G("MAC send failt...\r\n");
            }



}

最后DEBUG发现是在发送函数HAL_ETH_Transmit();
   if((heth->Instance->DMACSR & ETH_DMACSR_FBE) != (uint32_t)RESET)
   {
      heth->ErrorCode |= HAL_ETH_ERROR_DMA;
      heth->DMAErrorCode = heth->Instance->DMACSR;
      /* Set ETH HAL State to Ready */
      heth->gState = HAL_ETH_STATE_ERROR;
      /* Return function status */
      return HAL_ERROR; //这里返回ERROR了
   }

最后现现象是：只要不调用发送函数，接收是可以正常接收的，一但调用了发送函数，接收都接收不了

原子哥大神，请赐给我点灵感。啊门！！！！！