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527
source/eth/stm32f4x7_eth_bsp.c
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527
source/eth/stm32f4x7_eth_bsp.c
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/**
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******************************************************************************
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* @file stm32f4x7_eth_bsp.c
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* @author MCD Application Team
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* @version V1.1.0
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* @date 31-July-2013
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* @brief STM32F4x7 Ethernet hardware configuration.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT 2013 STMicroelectronics</center></h2>
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*
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* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.st.com/software_license_agreement_liberty_v2
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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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 "stm32f4x7_eth.h"
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#include "stm32f4x7_eth_bsp.h"
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#include "stm32f4xx.h"
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#include "lwip/netif.h"
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#include "netconf.h"
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#include "lwip/dhcp.h"
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#include "dev_flash.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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ETH_InitTypeDef ETH_InitStructure;
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__IO uint32_t EthStatus = 0;
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__IO uint8_t EthLinkStatus = 0;
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extern struct netif gnetif;
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#ifdef USE_DHCP
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extern __IO uint8_t DHCP_state;
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#endif /* LWIP_DHCP */
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/* Private function prototypes -----------------------------------------------*/
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static void ETH_GPIO_Config(void);
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static void ETH_MACDMA_Config(void);
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/* Private functions ---------------------------------------------------------*/
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void ETH_NVIC_Config(void)
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{
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NVIC_InitTypeDef NVIC_InitStructure;
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/* Enable the Ethernet global Interrupt */
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NVIC_InitStructure.NVIC_IRQChannel = ETH_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 12 ;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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/**
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* @brief ETH_BSP_Config
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* @param None
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* @retval None
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*/
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void ETH_BSP_Config(void)
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{
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RCC_ClocksTypeDef RCC_Clocks;
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/***************************************************************************
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NOTE:
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When using Systick to manage the delay in Ethernet driver, the Systick
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must be configured before Ethernet initialization and, the interrupt
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priority should be the highest one.
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*****************************************************************************/
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/* Configure Systick clock source as HCLK */
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// SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);
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// /* SystTick configuration: an interrupt every 10ms */
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// RCC_GetClocksFreq(&RCC_Clocks);
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// SysTick_Config(RCC_Clocks.HCLK_Frequency / 100);
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// /* Set Systick interrupt priority to 0*/
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// NVIC_SetPriority (SysTick_IRQn, 0);
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/* Configure the GPIO ports for ethernet pins */
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ETH_GPIO_Config();
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ETH_NVIC_Config();
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/* Configure the Ethernet MAC/DMA */
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ETH_MACDMA_Config();
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/* Get Ethernet link status*/
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if(ETH_ReadPHYRegister(DP83848_PHY_ADDRESS, PHY_SR) & 1)
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{
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EthStatus |= ETH_LINK_FLAG;
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}
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/* Configure the PHY to generate an interrupt on change of link status */
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// Eth_Link_PHYITConfig(DP83848_PHY_ADDRESS);
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/* Configure the EXTI for Ethernet link status. */
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// Eth_Link_EXTIConfig();
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}
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/**
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* @brief Configures the Ethernet Interface
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* @param None
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* @retval None
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*/
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static void ETH_MACDMA_Config(void)
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{
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/* Enable ETHERNET clock */
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_ETH_MAC | RCC_AHB1Periph_ETH_MAC_Tx |
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RCC_AHB1Periph_ETH_MAC_Rx, ENABLE);
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/* Reset ETHERNET on AHB Bus */
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ETH_DeInit();
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/* Software reset */
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ETH_SoftwareReset();
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/* Wait for software reset */
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while (ETH_GetSoftwareResetStatus() == SET);
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/* ETHERNET Configuration --------------------------------------------------*/
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/* Call ETH_StructInit if you don't like to configure all ETH_InitStructure parameter */
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ETH_StructInit(Ð_InitStructure);
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/* Fill ETH_InitStructure parametrs */
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/*------------------------ MAC -----------------------------------*/
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ETH_InitStructure.ETH_AutoNegotiation = ETH_AutoNegotiation_Enable;
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// ETH_InitStructure.ETH_AutoNegotiation = ETH_AutoNegotiation_Disable;
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// ETH_InitStructure.ETH_Speed = ETH_Speed_10M;
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// ETH_InitStructure.ETH_Mode = ETH_Mode_FullDuplex;
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ETH_InitStructure.ETH_LoopbackMode = ETH_LoopbackMode_Disable;
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ETH_InitStructure.ETH_RetryTransmission = ETH_RetryTransmission_Disable;
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ETH_InitStructure.ETH_AutomaticPadCRCStrip = ETH_AutomaticPadCRCStrip_Disable;
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ETH_InitStructure.ETH_ReceiveAll = ETH_ReceiveAll_Disable;
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ETH_InitStructure.ETH_BroadcastFramesReception = ETH_BroadcastFramesReception_Enable;
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ETH_InitStructure.ETH_PromiscuousMode = ETH_PromiscuousMode_Disable;
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ETH_InitStructure.ETH_MulticastFramesFilter = ETH_MulticastFramesFilter_Perfect;
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ETH_InitStructure.ETH_UnicastFramesFilter = ETH_UnicastFramesFilter_Perfect;
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#ifdef CHECKSUM_BY_HARDWARE
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ETH_InitStructure.ETH_ChecksumOffload = ETH_ChecksumOffload_Enable;
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#endif
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/*------------------------ DMA -----------------------------------*/
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/* When we use the Checksum offload feature, we need to enable the Store and Forward mode:
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the store and forward guarantee that a whole frame is stored in the FIFO, so the MAC can insert/verify the checksum,
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if the checksum is OK the DMA can handle the frame otherwise the frame is dropped */
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ETH_InitStructure.ETH_DropTCPIPChecksumErrorFrame = ETH_DropTCPIPChecksumErrorFrame_Enable;
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ETH_InitStructure.ETH_ReceiveStoreForward = ETH_ReceiveStoreForward_Enable;
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ETH_InitStructure.ETH_TransmitStoreForward = ETH_TransmitStoreForward_Enable;
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ETH_InitStructure.ETH_ForwardErrorFrames = ETH_ForwardErrorFrames_Disable;
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ETH_InitStructure.ETH_ForwardUndersizedGoodFrames = ETH_ForwardUndersizedGoodFrames_Disable;
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ETH_InitStructure.ETH_SecondFrameOperate = ETH_SecondFrameOperate_Enable;
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ETH_InitStructure.ETH_AddressAlignedBeats = ETH_AddressAlignedBeats_Enable;
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ETH_InitStructure.ETH_FixedBurst = ETH_FixedBurst_Enable;
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ETH_InitStructure.ETH_RxDMABurstLength = ETH_RxDMABurstLength_32Beat;
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ETH_InitStructure.ETH_TxDMABurstLength = ETH_TxDMABurstLength_32Beat;
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ETH_InitStructure.ETH_DMAArbitration = ETH_DMAArbitration_RoundRobin_RxTx_2_1;
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/* Configure Ethernet */
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EthStatus = ETH_Init(Ð_InitStructure, DP83848_PHY_ADDRESS);
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/* Enable the Ethernet Rx Interrupt */
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ETH_DMAITConfig(ETH_DMA_IT_NIS | ETH_DMA_IT_R, ENABLE);
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}
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/**
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* @brief Configures the different GPIO ports.
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* @param None
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* @retval None
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*/
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void ETH_GPIO_Config(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Enable GPIOs clocks */
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOB |
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RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOI |
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RCC_AHB1Periph_GPIOG | RCC_AHB1Periph_GPIOH |
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RCC_AHB1Periph_GPIOE | RCC_AHB1Periph_GPIOF, ENABLE);
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/* Enable SYSCFG clock */
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
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/*NET_NRST control, Configure PE3 */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
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GPIO_Init(GPIOE, &GPIO_InitStructure);
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GPIO_ResetBits(GPIOE, GPIO_Pin_3);
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for(u16 i=0;i<1000;i++)
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;
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GPIO_SetBits(GPIOE, GPIO_Pin_3);
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/* Configure MCO (PA8) */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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/* MII/RMII Media interface selection --------------------------------------*/
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#ifdef MII_MODE /* Mode MII with STM324xx-EVAL */
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#ifdef PHY_CLOCK_MCO
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/* Output HSE clock (25MHz) on MCO pin (PA8) to clock the PHY */
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RCC_MCO1Config(RCC_MCO1Source_HSE, RCC_MCO1Div_1);
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#endif /* PHY_CLOCK_MCO */
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SYSCFG_ETH_MediaInterfaceConfig(SYSCFG_ETH_MediaInterface_MII);
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#elif defined RMII_MODE /* Mode RMII with STM324xx-EVAL */
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SYSCFG_ETH_MediaInterfaceConfig(SYSCFG_ETH_MediaInterface_RMII);
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#endif
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/* Ethernet pins configuration ************************************************/
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/*
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ETH_MDIO -------------------------> PA2
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ETH_MDC --------------------------> PC1
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ETH_PPS_OUT ----------------------> PB5
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ETH_MII_CRS ----------------------> PH2
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ETH_MII_COL ----------------------> PH3
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ETH_MII_RX_ER --------------------> PI10
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ETH_MII_RXD2 ---------------------> PH6
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ETH_MII_RXD3 ---------------------> PH7
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ETH_MII_TX_CLK -------------------> PC3
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ETH_MII_TXD2 ---------------------> PC2
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ETH_MII_TXD3 ---------------------> PB8
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ETH_MII_RX_CLK/ETH_RMII_REF_CLK---> PA1
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ETH_MII_RX_DV/ETH_RMII_CRS_DV ----> PA7
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ETH_MII_RXD0/ETH_RMII_RXD0 -------> PC4
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ETH_MII_RXD1/ETH_RMII_RXD1 -------> PC5
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ETH_MII_TX_EN/ETH_RMII_TX_EN -----> PG11
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ETH_MII_TXD0/ETH_RMII_TXD0 -------> PG13
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ETH_MII_TXD1/ETH_RMII_TXD1 -------> PG14
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*/
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/* Configure PA1, PA2 and PA7 */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_7;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource1, GPIO_AF_ETH);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_ETH);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_ETH);
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/* Configure PB11, PB12, PB13 */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOB, GPIO_PinSource11, GPIO_AF_ETH);
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GPIO_PinAFConfig(GPIOB, GPIO_PinSource12, GPIO_AF_ETH);
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GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_ETH);
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/* Configure PC1, PC4 and PC5 */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5;
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GPIO_Init(GPIOC, &GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOC, GPIO_PinSource1, GPIO_AF_ETH);
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GPIO_PinAFConfig(GPIOC, GPIO_PinSource4, GPIO_AF_ETH);
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GPIO_PinAFConfig(GPIOC, GPIO_PinSource5, GPIO_AF_ETH);
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}
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/**
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* @brief Configure the PHY to generate an interrupt on change of link status.
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* @param PHYAddress: external PHY address
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* @retval None
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*/
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uint32_t Eth_Link_PHYITConfig(uint16_t PHYAddress)
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{
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uint16_t tmpreg = 0;
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/* Read MICR register */
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tmpreg = ETH_ReadPHYRegister(PHYAddress, PHY_MICR);
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/* Enable output interrupt events to signal via the INT pin */
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tmpreg |= (uint16_t)(PHY_MICR_INT_EN | PHY_MICR_INT_OE);
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if(!(ETH_WritePHYRegister(PHYAddress, PHY_MICR, tmpreg)))
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{
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/* Return ERROR in case of write timeout */
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return ETH_ERROR;
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}
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/* Read MISR register */
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tmpreg = ETH_ReadPHYRegister(PHYAddress, PHY_MISR);
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/* Enable Interrupt on change of link status */
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tmpreg |= (uint16_t)PHY_MISR_LINK_INT_EN;
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if(!(ETH_WritePHYRegister(PHYAddress, PHY_MISR, tmpreg)))
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{
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/* Return ERROR in case of write timeout */
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return ETH_ERROR;
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}
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/* Return SUCCESS */
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return ETH_SUCCESS;
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}
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/**
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* @brief EXTI configuration for Ethernet link status.
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* @param PHYAddress: external PHY address
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* @retval None
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*/
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void Eth_Link_EXTIConfig(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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EXTI_InitTypeDef EXTI_InitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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/* Enable the INT (PB14) Clock */
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RCC_AHB1PeriphClockCmd(ETH_LINK_GPIO_CLK, ENABLE);
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
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/* Configure INT pin as input */
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_InitStructure.GPIO_Pin = ETH_LINK_PIN;
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GPIO_Init(ETH_LINK_GPIO_PORT, &GPIO_InitStructure);
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/* Connect EXTI Line to INT Pin */
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SYSCFG_EXTILineConfig(ETH_LINK_EXTI_PORT_SOURCE, ETH_LINK_EXTI_PIN_SOURCE);
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/* Configure EXTI line */
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EXTI_InitStructure.EXTI_Line = ETH_LINK_EXTI_LINE;
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EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
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EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
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EXTI_InitStructure.EXTI_LineCmd = ENABLE;
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EXTI_Init(&EXTI_InitStructure);
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/* Enable and set the EXTI interrupt to priority 1*/
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NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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/**
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* @brief This function handles Ethernet link status.
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* @param None
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* @retval None
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||||
*/
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void Eth_Link_ITHandler(uint16_t PHYAddress)
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{
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/* Check whether the link interrupt has occurred or not */
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if(((ETH_ReadPHYRegister(PHYAddress, PHY_MISR)) & PHY_LINK_STATUS) != 0)
|
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{
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if((ETH_ReadPHYRegister(PHYAddress, PHY_SR) & 1))
|
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{
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netif_set_link_up(&gnetif);
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}
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else
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{
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EthLinkStatus = 1;
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netif_set_link_down(&gnetif);
|
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}
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||||
}
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}
|
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/**
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* @brief Link callback function, this function is called on change of link status.
|
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* @param The network interface
|
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* @retval None
|
||||
*/
|
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void ETH_link_callback(struct netif *netif)
|
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{
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__IO uint32_t timeout = 0;
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uint32_t tmpreg;
|
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uint16_t RegValue;
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struct ip_addr ipaddr;
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struct ip_addr netmask;
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struct ip_addr gw;
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#ifndef USE_DHCP
|
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uint8_t iptab[4] = {0};
|
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uint8_t iptxt[20];
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#endif /* USE_DHCP */
|
||||
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if(netif_is_link_up(netif))
|
||||
{
|
||||
/* Restart the auto-negotiation */
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if(ETH_InitStructure.ETH_AutoNegotiation != ETH_AutoNegotiation_Disable)
|
||||
{
|
||||
/* Reset Timeout counter */
|
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timeout = 0;
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|
||||
/* Enable auto-negotiation */
|
||||
ETH_WritePHYRegister(DP83848_PHY_ADDRESS, PHY_BCR, PHY_AutoNegotiation);
|
||||
|
||||
/* Wait until the auto-negotiation will be completed */
|
||||
do
|
||||
{
|
||||
timeout++;
|
||||
} while (!(ETH_ReadPHYRegister(DP83848_PHY_ADDRESS, PHY_BSR) & PHY_AutoNego_Complete) && (timeout < (uint32_t)PHY_READ_TO));
|
||||
|
||||
/* Reset Timeout counter */
|
||||
timeout = 0;
|
||||
|
||||
/* Read the result of the auto-negotiation */
|
||||
RegValue = ETH_ReadPHYRegister(DP83848_PHY_ADDRESS, PHY_SR);
|
||||
|
||||
/* Configure the MAC with the Duplex Mode fixed by the auto-negotiation process */
|
||||
if((RegValue & PHY_DUPLEX_STATUS) != (uint16_t)RESET)
|
||||
{
|
||||
/* Set Ethernet duplex mode to Full-duplex following the auto-negotiation */
|
||||
ETH_InitStructure.ETH_Mode = ETH_Mode_FullDuplex;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Set Ethernet duplex mode to Half-duplex following the auto-negotiation */
|
||||
ETH_InitStructure.ETH_Mode = 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 */
|
||||
ETH_InitStructure.ETH_Speed = ETH_Speed_10M;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Set Ethernet speed to 100M following the auto-negotiation */
|
||||
ETH_InitStructure.ETH_Speed = ETH_Speed_100M;
|
||||
}
|
||||
|
||||
/*------------------------ ETHERNET MACCR Re-Configuration --------------------*/
|
||||
/* Get the ETHERNET MACCR value */
|
||||
tmpreg = ETH->MACCR;
|
||||
|
||||
/* Set the FES bit according to ETH_Speed value */
|
||||
/* Set the DM bit according to ETH_Mode value */
|
||||
tmpreg |= (uint32_t)(ETH_InitStructure.ETH_Speed | ETH_InitStructure.ETH_Mode);
|
||||
|
||||
/* Write to ETHERNET MACCR */
|
||||
ETH->MACCR = (uint32_t)tmpreg;
|
||||
|
||||
_eth_delay_(ETH_REG_WRITE_DELAY);
|
||||
tmpreg = ETH->MACCR;
|
||||
ETH->MACCR = tmpreg;
|
||||
}
|
||||
|
||||
/* Restart MAC interface */
|
||||
ETH_Start();
|
||||
|
||||
#ifdef USE_DHCP
|
||||
ipaddr.addr = 0;
|
||||
netmask.addr = 0;
|
||||
gw.addr = 0;
|
||||
DHCP_state = DHCP_START;
|
||||
#else
|
||||
const uint8_t *ip=sys_param()->local_ip;
|
||||
IP4_ADDR(&ipaddr, ip[0], ip[1], ip[2], ip[3]);
|
||||
IP4_ADDR(&netmask, 255, 255 , 255, 0);
|
||||
IP4_ADDR(&gw, ip[0], ip[1], ip[2], 1);
|
||||
#endif /* USE_DHCP */
|
||||
|
||||
netif_set_addr(&gnetif, &ipaddr , &netmask, &gw);
|
||||
|
||||
/* When the netif is fully configured this function must be called.*/
|
||||
netif_set_up(&gnetif);
|
||||
|
||||
EthLinkStatus = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
ETH_Stop();
|
||||
#ifdef USE_DHCP
|
||||
DHCP_state = DHCP_LINK_DOWN;
|
||||
dhcp_stop(netif);
|
||||
#endif /* USE_DHCP */
|
||||
|
||||
/* When the netif link is down this function must be called.*/
|
||||
netif_set_down(&gnetif);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
Reference in New Issue
Block a user