617 lines
20 KiB
C
617 lines
20 KiB
C
/**
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******************************************************************************
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* File Name : ethernetif.c
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* Description : This file provides code for the configuration
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* of the ethernetif.c MiddleWare.
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******************************************************************************
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* This notice applies to any and all portions of this file
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* that are not between comment pairs USER CODE BEGIN and
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* USER CODE END. Other portions of this file, whether
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* inserted by the user or by software development tools
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* are owned by their respective copyright owners.
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*
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* Copyright (c) 2018 STMicroelectronics International N.V.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted, provided that the following conditions are met:
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*
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* 1. Redistribution of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of other
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* contributors to this software may be used to endorse or promote products
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* derived from this software without specific written permission.
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* 4. This software, including modifications and/or derivative works of this
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* software, must execute solely and exclusively on microcontroller or
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* microprocessor devices manufactured by or for STMicroelectronics.
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* 5. Redistribution and use of this software other than as permitted under
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* this license is void and will automatically terminate your rights under
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* this license.
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*
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* THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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* PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
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* RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
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* SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "lwip/opt.h"
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#include "lwip/mem.h"
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#include "lwip/memp.h"
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#include "lwip/timeouts.h"
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#include "netif/ethernet.h"
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#include "netif/etharp.h"
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#include "lwip/ethip6.h"
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#include "ethernetif.h"
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#include <string.h>
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#include <stdio.h>
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/* Network interface name */
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#define IFNAME0 's'
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#define IFNAME1 't'
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/* Private variables ---------------------------------------------------------*/
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#if defined ( __ICCARM__ ) /*!< IAR Compiler */
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#pragma data_alignment=4
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#endif
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__ALIGN_BEGIN ETH_DMADescTypeDef DMARxDscrTab[ETH_RXBUFNB] __ALIGN_END;/* Ethernet Rx MA Descriptor */
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#if defined ( __ICCARM__ ) /*!< IAR Compiler */
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#pragma data_alignment=4
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#endif
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__ALIGN_BEGIN ETH_DMADescTypeDef DMATxDscrTab[ETH_TXBUFNB] __ALIGN_END;/* Ethernet Tx DMA Descriptor */
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#if defined ( __ICCARM__ ) /*!< IAR Compiler */
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#pragma data_alignment=4
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#endif
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__ALIGN_BEGIN uint8_t Rx_Buff[ETH_RXBUFNB][ETH_RX_BUF_SIZE] __ALIGN_END; /* Ethernet Receive Buffer */
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#if defined ( __ICCARM__ ) /*!< IAR Compiler */
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#pragma data_alignment=4
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#endif
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__ALIGN_BEGIN uint8_t Tx_Buff[ETH_TXBUFNB][ETH_TX_BUF_SIZE] __ALIGN_END; /* Ethernet Transmit Buffer */
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/* Global Ethernet handle */
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ETH_HandleTypeDef heth;
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ETH_HandleTypeDef* getEthStruct() {
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return &heth;
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}
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/*******************************************************************************
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LL Driver Interface ( LwIP stack --> ETH)
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*******************************************************************************/
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/**
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* In this function, the hardware should be initialized.
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* Called from ethernetif_init().
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*
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* @param netif the already initialized lwip network interface structure
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* for this ethernetif
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*/
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static void low_level_init(struct netif *netif)
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{
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uint32_t regvalue = 0;
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HAL_StatusTypeDef hal_eth_init_status;
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uint8_t MACAddr[6] ;
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heth.Instance = ETH;
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heth.Init.AutoNegotiation = ETH_AUTONEGOTIATION_ENABLE;
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heth.Init.PhyAddress = LAN8742A_PHY_ADDRESS;
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MACAddr[0] = 0x00;
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MACAddr[1] = 0x80;
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MACAddr[2] = 0xE1;
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MACAddr[3] = 0x00;
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MACAddr[4] = 0x00;
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MACAddr[5] = 0x02;
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heth.Init.MACAddr = &MACAddr[0];
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heth.Init.RxMode = ETH_RXPOLLING_MODE;
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heth.Init.ChecksumMode = ETH_CHECKSUM_BY_HARDWARE;
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heth.Init.MediaInterface = ETH_MEDIA_INTERFACE_RMII;
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printf("LAN8742A PHYAD: 0x0\r\r\n");
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printf("Setting MACaddr: %02x:%02x:%02x:%02x:%02x:%02x\r\r\n",
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MACAddr[0], MACAddr[1], MACAddr[2],
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MACAddr[3], MACAddr[4], MACAddr[5]);
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printf("LAN8742A interface is RMII\r\r\n");
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hal_eth_init_status = HAL_ETH_Init(&heth);
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if (hal_eth_init_status == HAL_OK)
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{
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/* Set netif link flag */
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netif->flags |= NETIF_FLAG_LINK_UP;
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}
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/* Initialize Tx Descriptors list: Chain Mode */
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HAL_ETH_DMATxDescListInit(&heth, DMATxDscrTab, &Tx_Buff[0][0], ETH_TXBUFNB);
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/* Initialize Rx Descriptors list: Chain Mode */
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HAL_ETH_DMARxDescListInit(&heth, DMARxDscrTab, &Rx_Buff[0][0], ETH_RXBUFNB);
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#if LWIP_ARP || LWIP_ETHERNET
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/* set MAC hardware address length */
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netif->hwaddr_len = ETH_HWADDR_LEN;
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/* set MAC hardware address */
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netif->hwaddr[0] = heth.Init.MACAddr[0];
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netif->hwaddr[1] = heth.Init.MACAddr[1];
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netif->hwaddr[2] = heth.Init.MACAddr[2];
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netif->hwaddr[3] = heth.Init.MACAddr[3];
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netif->hwaddr[4] = heth.Init.MACAddr[4];
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netif->hwaddr[5] = heth.Init.MACAddr[5];
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/* maximum transfer unit */
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netif->mtu = 1500;
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/* Accept broadcast address and ARP traffic */
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/* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */
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#if LWIP_ARP
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netif->flags |= NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP;
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#else
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netif->flags |= NETIF_FLAG_BROADCAST;
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#endif /* LWIP_ARP */
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/* Enable MAC and DMA transmission and reception */
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HAL_ETH_Start(&heth);
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printf("Starting Ethernet IRQ/DMA..\r\r\n");
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/* Read Register Configuration */
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HAL_ETH_ReadPHYRegister(&heth, PHY_ISFR, ®value);
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regvalue |= (PHY_ISFR_INT4);
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/* Enable Interrupt on change of link status */
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HAL_ETH_WritePHYRegister(&heth, PHY_ISFR , regvalue );
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/* Read Register Configuration */
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HAL_ETH_ReadPHYRegister(&heth, PHY_ISFR , ®value);
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#endif /* LWIP_ARP || LWIP_ETHERNET */
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}
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/**
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* This function should do the actual transmission of the packet. The packet is
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* contained in the pbuf that is passed to the function. This pbuf
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* might be chained.
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*
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* @param netif the lwip network interface structure for this ethernetif
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* @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)
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* @return ERR_OK if the packet could be sent
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* an err_t value if the packet couldn't be sent
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*
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* @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to
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* strange results. You might consider waiting for space in the DMA queue
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* to become availale since the stack doesn't retry to send a packet
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* dropped because of memory failure (except for the TCP timers).
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*/
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static err_t low_level_output(struct netif *netif, struct pbuf *p)
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{
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err_t errval;
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struct pbuf *q;
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uint8_t *buffer = (uint8_t *)(heth.TxDesc->Buffer1Addr);
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__IO ETH_DMADescTypeDef *DmaTxDesc;
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uint32_t framelength = 0;
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uint32_t bufferoffset = 0;
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uint32_t byteslefttocopy = 0;
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uint32_t payloadoffset = 0;
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DmaTxDesc = heth.TxDesc;
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bufferoffset = 0;
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/* copy frame from pbufs to driver buffers */
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for(q = p; q != NULL; q = q->next)
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{
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/* Is this buffer available? If not, goto error */
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if((DmaTxDesc->Status & ETH_DMATXDESC_OWN) != (uint32_t)RESET)
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{
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errval = ERR_USE;
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goto error;
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}
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/* Get bytes in current lwIP buffer */
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byteslefttocopy = q->len;
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payloadoffset = 0;
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/* Check if the length of data to copy is bigger than Tx buffer size*/
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while( (byteslefttocopy + bufferoffset) > ETH_TX_BUF_SIZE )
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{
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/* Copy data to Tx buffer*/
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memcpy( (uint8_t*)((uint8_t*)buffer + bufferoffset), (uint8_t*)((uint8_t*)q->payload + payloadoffset), (ETH_TX_BUF_SIZE - bufferoffset) );
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/* Point to next descriptor */
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DmaTxDesc = (ETH_DMADescTypeDef *)(DmaTxDesc->Buffer2NextDescAddr);
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/* Check if the buffer is available */
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if((DmaTxDesc->Status & ETH_DMATXDESC_OWN) != (uint32_t)RESET)
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{
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errval = ERR_USE;
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goto error;
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}
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buffer = (uint8_t *)(DmaTxDesc->Buffer1Addr);
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byteslefttocopy = byteslefttocopy - (ETH_TX_BUF_SIZE - bufferoffset);
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payloadoffset = payloadoffset + (ETH_TX_BUF_SIZE - bufferoffset);
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framelength = framelength + (ETH_TX_BUF_SIZE - bufferoffset);
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bufferoffset = 0;
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}
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/* Copy the remaining bytes */
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memcpy( (uint8_t*)((uint8_t*)buffer + bufferoffset), (uint8_t*)((uint8_t*)q->payload + payloadoffset), byteslefttocopy );
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bufferoffset = bufferoffset + byteslefttocopy;
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framelength = framelength + byteslefttocopy;
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}
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/* Prepare transmit descriptors to give to DMA */
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HAL_ETH_TransmitFrame(&heth, framelength);
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errval = ERR_OK;
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error:
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/* When Transmit Underflow flag is set, clear it and issue a Transmit Poll Demand to resume transmission */
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if ((heth.Instance->DMASR & ETH_DMASR_TUS) != (uint32_t)RESET)
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{
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/* Clear TUS ETHERNET DMA flag */
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heth.Instance->DMASR = ETH_DMASR_TUS;
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/* Resume DMA transmission*/
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heth.Instance->DMATPDR = 0;
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}
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return errval;
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}
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/**
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* Should allocate a pbuf and transfer the bytes of the incoming
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* packet from the interface into the pbuf.
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*
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* @param netif the lwip network interface structure for this ethernetif
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* @return a pbuf filled with the received packet (including MAC header)
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* NULL on memory error
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*/
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static struct pbuf * low_level_input(struct netif *netif)
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{
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struct pbuf *p = NULL;
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struct pbuf *q = NULL;
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uint16_t len = 0;
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uint8_t *buffer;
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__IO ETH_DMADescTypeDef *dmarxdesc;
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uint32_t bufferoffset = 0;
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uint32_t payloadoffset = 0;
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uint32_t byteslefttocopy = 0;
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uint32_t i=0;
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/* get received frame */
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if (HAL_ETH_GetReceivedFrame(&heth) != HAL_OK)
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return NULL;
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/* Obtain the size of the packet and put it into the "len" variable. */
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len = heth.RxFrameInfos.length;
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buffer = (uint8_t *)heth.RxFrameInfos.buffer;
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if (len > 0)
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{
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/* We allocate a pbuf chain of pbufs from the Lwip buffer pool */
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p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
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}
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if (p != NULL)
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{
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dmarxdesc = heth.RxFrameInfos.FSRxDesc;
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bufferoffset = 0;
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for(q = p; q != NULL; q = q->next)
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{
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byteslefttocopy = q->len;
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payloadoffset = 0;
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/* Check if the length of bytes to copy in current pbuf is bigger than Rx buffer size*/
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while( (byteslefttocopy + bufferoffset) > ETH_RX_BUF_SIZE )
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{
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/* Copy data to pbuf */
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memcpy( (uint8_t*)((uint8_t*)q->payload + payloadoffset), (uint8_t*)((uint8_t*)buffer + bufferoffset), (ETH_RX_BUF_SIZE - bufferoffset));
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/* Point to next descriptor */
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dmarxdesc = (ETH_DMADescTypeDef *)(dmarxdesc->Buffer2NextDescAddr);
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buffer = (uint8_t *)(dmarxdesc->Buffer1Addr);
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byteslefttocopy = byteslefttocopy - (ETH_RX_BUF_SIZE - bufferoffset);
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payloadoffset = payloadoffset + (ETH_RX_BUF_SIZE - bufferoffset);
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bufferoffset = 0;
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}
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/* Copy remaining data in pbuf */
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memcpy( (uint8_t*)((uint8_t*)q->payload + payloadoffset), (uint8_t*)((uint8_t*)buffer + bufferoffset), byteslefttocopy);
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bufferoffset = bufferoffset + byteslefttocopy;
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}
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}
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/* Release descriptors to DMA */
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/* Point to first descriptor */
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dmarxdesc = heth.RxFrameInfos.FSRxDesc;
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/* Set Own bit in Rx descriptors: gives the buffers back to DMA */
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for (i=0; i< heth.RxFrameInfos.SegCount; i++)
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{
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dmarxdesc->Status |= ETH_DMARXDESC_OWN;
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dmarxdesc = (ETH_DMADescTypeDef *)(dmarxdesc->Buffer2NextDescAddr);
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}
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/* Clear Segment_Count */
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heth.RxFrameInfos.SegCount =0;
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/* When Rx Buffer unavailable flag is set: clear it and resume reception */
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if ((heth.Instance->DMASR & ETH_DMASR_RBUS) != (uint32_t)RESET)
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{
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/* Clear RBUS ETHERNET DMA flag */
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heth.Instance->DMASR = ETH_DMASR_RBUS;
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/* Resume DMA reception */
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heth.Instance->DMARPDR = 0;
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}
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return p;
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}
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void check_link_status(struct netif* netif) {
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uint32_t regvalue = 0;
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if (HAL_ETH_ReadPHYRegister(&heth, PHY_BSR, ®value) == HAL_OK)
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{
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if((regvalue & PHY_LINKED_STATUS)== (uint16_t)RESET)
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{
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// Link status = disconnected
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if (netif_is_link_up(netif))
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{
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netif_set_down(netif);
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getLwipStatus()->link_status = LINK_DOWN;
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netif_set_link_down(netif);
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}
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}
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else {
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// Link status = connected
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if (!netif_is_link_up(netif))
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{
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getLwipStatus()->link_status = LINK_UP;
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NVIC_SystemReset();
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}
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getLwipStatus()->link_status = LINK_UP;
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}
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}
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}
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/**
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* This function should be called when a packet is ready to be read
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* from the interface. It uses the function low_level_input() that
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* should handle the actual reception of bytes from the network
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* interface. Then the type of the received packet is determined and
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* the appropriate input function is called.
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*
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* @param netif the lwip network interface structure for this ethernetif
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*/
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void ethernetif_input(struct netif *netif)
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{
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err_t err;
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struct pbuf *p;
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/* move received packet into a new pbuf */
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p = low_level_input(netif);
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check_link_status(netif);
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/* no packet could be read, silently ignore this */
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if (p == NULL) return;
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/* entry point to the LwIP stack */
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err = netif->input(p, netif);
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if (err != ERR_OK)
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{
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LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
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pbuf_free(p);
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p = NULL;
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}
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}
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#if !LWIP_ARP
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/**
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* This function has to be completed by user in case of ARP OFF.
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*
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* @param netif the lwip network interface structure for this ethernetif
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* @return ERR_OK if ...
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*/
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static err_t low_level_output_arp_off(struct netif *netif, struct pbuf *q, const ip4_addr_t *ipaddr)
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{
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err_t errval;
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errval = ERR_OK;
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return errval;
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}
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#endif /* LWIP_ARP */
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/**
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* Should be called at the beginning of the program to set up the
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* network interface. It calls the function low_level_init() to do the
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* actual setup of the hardware.
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*
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* This function should be passed as a parameter to netif_add().
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*
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* @param netif the lwip network interface structure for this ethernetif
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* @return ERR_OK if the loopif is initialized
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* ERR_MEM if private data couldn't be allocated
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* any other err_t on error
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*/
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err_t ethernetif_init(struct netif *netif)
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{
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LWIP_ASSERT("netif != NULL", (netif != NULL));
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#if LWIP_NETIF_HOSTNAME
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/* Initialize interface hostname */
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netif->hostname = "lwip";
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#endif /* LWIP_NETIF_HOSTNAME */
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netif->name[0] = IFNAME0;
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netif->name[1] = IFNAME1;
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/* We directly use etharp_output() here to save a function call.
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* You can instead declare your own function an call etharp_output()
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* from it if you have to do some checks before sending (e.g. if link
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* is available...) */
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#if LWIP_IPV4
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#if LWIP_ARP || LWIP_ETHERNET
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#if LWIP_ARP
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netif->output = etharp_output;
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#else
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/* The user should write ist own code in low_level_output_arp_off function */
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netif->output = low_level_output_arp_off;
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#endif /* LWIP_ARP */
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#endif /* LWIP_ARP || LWIP_ETHERNET */
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#endif /* LWIP_IPV4 */
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|
#if LWIP_IPV6
|
|
netif->output_ip6 = ethip6_output;
|
|
#endif /* LWIP_IPV6 */
|
|
|
|
netif->linkoutput = low_level_output;
|
|
|
|
/* initialize the hardware */
|
|
low_level_init(netif);
|
|
|
|
return ERR_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the current time in milliseconds
|
|
* when LWIP_TIMERS == 1 and NO_SYS == 1
|
|
* @param None
|
|
* @retval Time
|
|
*/
|
|
u32_t sys_jiffies(void)
|
|
{
|
|
return getSysTick();
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the current time in milliseconds
|
|
* when LWIP_TIMERS == 1 and NO_SYS == 1
|
|
* @param None
|
|
* @retval Time
|
|
*/
|
|
u32_t sys_now(void)
|
|
{
|
|
return getSysTick();
|
|
}
|
|
|
|
#if LWIP_NETIF_LINK_CALLBACK
|
|
/**
|
|
* @brief Link callback function, this function is called on change of link status
|
|
* to update low level driver configuration.
|
|
* @param netif: The network interface
|
|
* @retval None
|
|
*/
|
|
void ethernetif_update_config(struct netif *netif)
|
|
{
|
|
__IO uint32_t tickstart = 0;
|
|
uint32_t regvalue = 0;
|
|
|
|
if(netif_is_link_up(netif))
|
|
{
|
|
/* Restart the auto-negotiation */
|
|
if(heth.Init.AutoNegotiation != ETH_AUTONEGOTIATION_DISABLE)
|
|
{
|
|
/* Enable Auto-Negotiation */
|
|
HAL_ETH_WritePHYRegister(&heth, PHY_BCR, PHY_AUTONEGOTIATION);
|
|
|
|
/* Get tick */
|
|
tickstart = getSysTick();
|
|
|
|
/* Wait until the auto-negotiation will be completed */
|
|
do
|
|
{
|
|
HAL_ETH_ReadPHYRegister(&heth, PHY_BSR, ®value);
|
|
|
|
/* Check for the Timeout ( 1s ) */
|
|
if((getSysTick() - tickstart ) > 1000)
|
|
{
|
|
/* In case of timeout */
|
|
goto error;
|
|
}
|
|
} while (((regvalue & PHY_AUTONEGO_COMPLETE) != PHY_AUTONEGO_COMPLETE));
|
|
|
|
/* Read the result of the auto-negotiation */
|
|
HAL_ETH_ReadPHYRegister(&heth, PHY_SR, ®value);
|
|
|
|
/* Configure the MAC with the Duplex Mode fixed by the auto-negotiation process */
|
|
if((regvalue & PHY_DUPLEX_STATUS) != (uint32_t)RESET)
|
|
{
|
|
/* Set Ethernet duplex mode to Full-duplex following the auto-negotiation */
|
|
heth.Init.DuplexMode = ETH_MODE_FULLDUPLEX;
|
|
}
|
|
else
|
|
{
|
|
/* Set Ethernet duplex mode to Half-duplex following the auto-negotiation */
|
|
heth.Init.DuplexMode = ETH_MODE_HALFDUPLEX;
|
|
}
|
|
/* Configure the MAC with the speed fixed by the auto-negotiation process */
|
|
if(regvalue & PHY_SPEED_STATUS)
|
|
{
|
|
/* Set Ethernet speed to 10M following the auto-negotiation */
|
|
heth.Init.Speed = ETH_SPEED_10M;
|
|
}
|
|
else
|
|
{
|
|
/* Set Ethernet speed to 100M following the auto-negotiation */
|
|
heth.Init.Speed = ETH_SPEED_100M;
|
|
}
|
|
}
|
|
else /* AutoNegotiation Disable */
|
|
{
|
|
error :
|
|
/* Check parameters */
|
|
assert_param(IS_ETH_SPEED(heth.Init.Speed));
|
|
assert_param(IS_ETH_DUPLEX_MODE(heth.Init.DuplexMode));
|
|
|
|
/* Set MAC Speed and Duplex Mode to PHY */
|
|
HAL_ETH_WritePHYRegister(&heth, PHY_BCR, ((uint16_t)(heth.Init.DuplexMode >> 3) |
|
|
(uint16_t)(heth.Init.Speed >> 1)));
|
|
}
|
|
|
|
/* ETHERNET MAC Re-Configuration */
|
|
HAL_ETH_ConfigMAC(&heth, (ETH_MACInitTypeDef *) NULL);
|
|
|
|
/* Restart MAC interface */
|
|
HAL_ETH_Start(&heth);
|
|
}
|
|
else
|
|
{
|
|
/* Stop MAC interface */
|
|
HAL_ETH_Stop(&heth);
|
|
}
|
|
|
|
ethernetif_notify_conn_changed(netif);
|
|
}
|
|
|
|
/**
|
|
* @brief This function notify user about link status changement.
|
|
* @param netif: the network interface
|
|
* @retval None
|
|
*/
|
|
__weak void ethernetif_notify_conn_changed(struct netif *netif)
|
|
{
|
|
/* NOTE : This is function could be implemented in user file
|
|
when the callback is needed,
|
|
*/
|
|
|
|
}
|
|
|
|
#endif /* LWIP_NETIF_LINK_CALLBACK */
|
|
|
|
|
|
|