This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
使用enet_uip例程，每次修改完MAC地址后，重启设备后无法接收ARP应答，无法建立ARP表，每次都得重启2-3次才能成功，这问题有遇到的吗？
修改MAC地址，你是怎么做的？
就是下面这样处理的，改完后设备能正常运行，但掉电重启后，可能出现PING不通的情况，但是重启几次肯定能PING通，不知道是什么情况，不知道我的初始化有没有什么问题？
修改MAC地址：
ROM_EMACAddrSet(EMAC0_BASE, 0, (uint8_t *)&sTempAddr);uip_ethaddr.addr[0] = u8HostMACAddr[0];uip_ethaddr.addr[1] = u8HostMACAddr[1];uip_ethaddr.addr[2] = u8HostMACAddr[2]; uip_ethaddr.addr[3] = u8HostMACAddr[3];uip_ethaddr.addr[4] = u8HostMACAddr[4];uip_ethaddr.addr[5] = u8HostMACAddr[5];
初始化：
{ uip_ipaddr_t sIPAddr; static struct uip_eth_addr sTempAddr; static struct uip_eth_addr sTempAddr1; int32_t i32PeriodicTimer, i32ARPTimer; uint32_t i;//ui32User0, ui32User1; uint32_t ui32Temp, ui32PHYConfig; static u8_t u8Test[3] = {0xff,0xff,0xff}; // 建立新连接发送的测试数据(无效数据) // Run from the PLL at 120 MHz. ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ | SYSCTL_OSC_MAIN | SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480), 120000000); // Initialize the UART, clear the terminal, and print banner. ui32PHYConfig = (EMAC_PHY_TYPE_INTERNAL | EMAC_PHY_INT_MDIX_EN | EMAC_PHY_AN_100B_T_FULL_DUPLEX); PinoutSet(true, false); // 系统管脚初始化 EEPROMInit(); // eeprom初始化 Spi_Init(); // SSI管脚初始化 /* MAP_FlashUserGet(&ui32User0, &ui32User1); if((ui32User0 == 0xffffffff) || (ui32User1 == 0xffffffff)) { ui32User0 = 0x00002058; ui32User1 = 0x00002058; MAP_FlashUserSet(ui32User0, ui32User1); } sTempAddr.addr[0] = ((ui32User0 >> 0) & 0xff); sTempAddr.addr[1] = ((ui32User0 >> 8) & 0xff); sTempAddr.addr[2] = ((ui32User0 >> 16) & 0xff); sTempAddr.addr[3] = ((ui32User1 >> 0) & 0xff); sTempAddr.addr[4] = ((ui32User1 >> 8) & 0xff); sTempAddr.addr[5] = ((ui32User1 >> 16) & 0xff); */ // MAC地址 sTempAddr.addr[0] = u8HostMACAddr[0]; sTempAddr.addr[1] = u8HostMACAddr[1]; sTempAddr.addr[2] = u8HostMACAddr[2]; sTempAddr.addr[3] = u8HostMACAddr[3]; sTempAddr.addr[4] = u8HostMACAddr[4]; sTempAddr.addr[5] = u8HostMACAddr[5]; // 读取系统设置参数 EEPROMRead((uint32_t *)ipSeting,0x0400,sizeof(ipSeting)); // 若当前地址无有效数据,则写入初始数据 //if ((ipSeting[0] != 0xff) && (ipSeting[1] != 0xff) && (ipSeting[2] != 0xff) && (ipSeting[3] != 0xff)) if ((ipSeting[0] == 0xff) && (ipSeting[1] == 0xff) && (ipSeting[2] == 0xff) && (ipSeting[3] == 0xff)) { InitNetPara(); // 网络参数初始化 InitSysPara(); // 初始化默认数据 uip_setethaddr(sTempAddr); Sc16is752ipw_Uart_Init(); // Sc16is752ipw spi转串口初始化 EEPROMProgram((uint32_t *)ipSeting,0x0400,sizeof(ipSeting)); // 写入EEPROM } else { // 更新参数值 /***********************IP,子网掩码,网关修改后本次应答不更新,下次操作时更新*****************/ // 主机IP u8HostIpAddr[0] = ipSeting[39] | (((uint16_t)ipSeting[38]) << 8); u8HostIpAddr[1] = ipSeting[37] | (((uint16_t)ipSeting[36]) << 8); // 子网掩码 u8HostNetMask[0] = ipSeting[43] | (((uint16_t)ipSeting[42]) << 8); u8HostNetMask[1] = ipSeting[41] | (((uint16_t)ipSeting[40]) << 8); // 网关 u8HostGetWay[0] = ipSeting[47] | (((uint16_t)ipSeting[46]) << 8); u8HostGetWay[1] = ipSeting[45] | (((uint16_t)ipSeting[44]) << 8); /*******************************************************************************************/ /************************************下列参数实时更新***************************************/ // MAC地址 u8HostMACAddr[0] = ipSeting[28]; u8HostMACAddr[1] = ipSeting[29]; u8HostMACAddr[2] = ipSeting[30]; u8HostMACAddr[3] = ipSeting[31]; u8HostMACAddr[4] = ipSeting[32]; u8HostMACAddr[5] = ipSeting[33]; // 控制端主机IP u8CtrlIpAddr[0] = ipSeting[51] | (((uint16_t)ipSeting[50]) << 8); u8CtrlIpAddr[1] = ipSeting[49] | (((uint16_t)ipSeting[48]) << 8); // 串口1相关 u32UartBaud[0] = ipSeting[56] | (((uint32_t)(ipSeting[57])) << 8) | (((uint32_t)(ipSeting[58])) << 16)| (((uint32_t)(ipSeting[59])) << 24); u8UartDataBit[0] = ipSeting[60]; u8UartStopBit[0] = ipSeting[62]; u8UartParityBit[0] = ipSeting[61]; // 串口2相关 u32UartBaud[1] = ipSeting[64] | (((uint32_t)(ipSeting[65])) << 8) | (((uint32_t)(ipSeting[66])) << 16)| (((uint32_t)(ipSeting[67])) << 24); u8UartDataBit[1] = ipSeting[68]; u8UartStopBit[1] = ipSeting[70]; u8UartParityBit[1] = ipSeting[69]; // 串口3相关 u32UartBaud[2] = ipSeting[80] | (((uint32_t)(ipSeting[81])) << 8) | (((uint32_t)(ipSeting[82])) << 16)| (((uint32_t)(ipSeting[83])) << 24); u8UartDataBit[2] = ipSeting[84]; u8UartStopBit[2] = ipSeting[86]; u8UartParityBit[2] = ipSeting[85]; // 485相关 u32UartBaud[3] = ipSeting[72] | (((uint32_t)(ipSeting[73])) << 8) | (((uint32_t)(ipSeting[74])) << 16)| (((uint32_t)(ipSeting[75])) << 24); u8UartDataBit[3] = ipSeting[76]; u8UartStopBit[3] = ipSeting[78]; u8UartParityBit[3] = ipSeting[77]; // MAC地址 sTempAddr.addr[0] = u8HostMACAddr[0]; sTempAddr.addr[1] = u8HostMACAddr[1]; sTempAddr.addr[2] = u8HostMACAddr[2]; sTempAddr.addr[3] = u8HostMACAddr[3]; sTempAddr.addr[4] = u8HostMACAddr[4]; sTempAddr.addr[5] = u8HostMACAddr[5]; /*******************************************************************************************/ } Delay_us(500); // Configure SysTick for a periodic interrupt. ROM_SysTickPeriodSet(ui32SysClock / SYSTICKHZ); ROM_SysTickEnable(); ROM_SysTickIntEnable(); // Enable and reset the Ethernet modules. ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_EMAC0); ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_EPHY0); ROM_SysCtlPeripheralReset(SYSCTL_PERIPH_EMAC0); ROM_SysCtlPeripheralReset(SYSCTL_PERIPH_EPHY0); // Wait for the MAC to be ready. while(!ROM_SysCtlPeripheralReady(SYSCTL_PERIPH_EMAC0)) { } // Configure for use with the internal PHY. EMACPHYConfigSet(EMAC0_BASE, ui32PHYConfig); // Reset the MAC. ROM_EMACReset(EMAC0_BASE); // Initialize the MAC and set the DMA mode. ROM_EMACInit(EMAC0_BASE, ui32SysClock, EMAC_BCONFIG_MIXED_BURST | EMAC_BCONFIG_PRIORITY_FIXED, 4, 4, 0); // Set MAC configuration options. ROM_EMACConfigSet(EMAC0_BASE, (EMAC_CONFIG_FULL_DUPLEX | EMAC_CONFIG_CHECKSUM_OFFLOAD | EMAC_CONFIG_7BYTE_PREAMBLE | EMAC_CONFIG_IF_GAP_96BITS | EMAC_CONFIG_USE_MACADDR0 | EMAC_CONFIG_SA_FROM_DESCRIPTOR | EMAC_CONFIG_BO_LIMIT_1024), (EMAC_MODE_RX_STORE_FORWARD | EMAC_MODE_TX_STORE_FORWARD | EMAC_MODE_TX_THRESHOLD_64_BYTES | EMAC_MODE_RX_THRESHOLD_64_BYTES), 0); // Initialize the Ethernet DMA descriptors. InitDescriptors(EMAC0_BASE); EMACAddrGet(EMAC0_BASE,0,(uint8_t *)&sTempAddr1); EMACAddrGet(EMAC0_BASE,0,(uint8_t *)&sTempAddr1); EMACAddrGet(EMAC0_BASE,0,(uint8_t *)&sTempAddr1); EMACAddrGet(EMAC0_BASE,0,(uint8_t *)&sTempAddr1); EMACAddrGet(EMAC0_BASE,0,(uint8_t *)&sTempAddr1); EMACAddrGet(EMAC0_BASE,0,(uint8_t *)&sTempAddr1); Delay_us(5000); // Program the hardware with its MAC address (for filtering). MAP_EMACAddrSet(EMAC0_BASE, 0, (uint8_t *)&sTempAddr); Delay_us(5000); // Wait for the link to become active. while((EMACPHYRead(EMAC0_BASE, 0, EPHY_BMSR) & EPHY_BMSR_LINKSTAT) == 0) { } // Set MAC filtering options. We receive all broadcast and multicast // packets along with those addressed specifically for us. ROM_EMACFrameFilterSet(EMAC0_BASE, (EMAC_FRMFILTER_SADDR | EMAC_FRMFILTER_PASS_MULTICAST | EMAC_FRMFILTER_PASS_NO_CTRL)); // Clear any pending interrupts. ROM_EMACIntClear(EMAC0_BASE, EMACIntStatus(EMAC0_BASE, false)); // Initialize the uIP TCP/IP stack. uip_init(); // Set the local MAC address (for uIP). // EMACHashFilterSet(EMAC0_BASE,pui32HashHi1,pui32HashLo1); // EMACHashFilterGet(EMAC0_BASE,pui32HashLo,pui32HashHi); uip_ethaddr.addr[0] = u8HostMACAddr[0]; uip_ethaddr.addr[1] = u8HostMACAddr[1]; uip_ethaddr.addr[2] = u8HostMACAddr[2]; uip_ethaddr.addr[3] = u8HostMACAddr[3]; uip_ethaddr.addr[4] = u8HostMACAddr[4]; uip_ethaddr.addr[5] = u8HostMACAddr[5]; uip_ipaddr(sIPAddr, (u8HostIpAddr[0] & 0x00ff),(u8HostIpAddr[0] >> 8), (u8HostIpAddr[1] & 0x00ff), (u8HostIpAddr[1] >> 8)); uip_sethostaddr(sIPAddr); uip_ipaddr(sIPAddr, (u8HostGetWay[0] & 0x00ff),(u8HostGetWay[0] >> 8), (u8HostGetWay[1] & 0x00ff), (u8HostGetWay[1] >> 8)); uip_setdraddr(sIPAddr); uip_ipaddr(sIPAddr, (u8HostNetMask[0] & 0x00ff),(u8HostNetMask[0] >> 8), (u8HostNetMask[1] & 0x00ff), (u8HostNetMask[1] >> 8)); uip_setnetmask(sIPAddr); Rs485_Init(); // 485初始化(必须放在读取系统参数后) Sc16is752ipw_Uart_Init(); // Sc16is752ipw spi转串口初始化 // Uart_SetPara(ChannelB,u16UartBaud[2],GetUartDataBit(u8UartDataBit[2]),GetUartStopBit(u8UartStopBit[2]),GetUartParBit(u8UartParityBit[2])); // Sc16is752ipw_Uart_Enable(); // Enable the Ethernet MAC transmitter and receiver. ROM_EMACTxEnable(EMAC0_BASE); ROM_EMACRxEnable(EMAC0_BASE); // Enable the Ethernet interrupt. ROM_IntEnable(INT_EMAC0); // Enable the Ethernet RX Packet interrupt source. ROM_EMACIntEnable(EMAC0_BASE, EMAC_INT_RECEIVE); // Mark the first receive descriptor as available to the DMA to start // the receive processing. g_psRxDescriptor[g_ui32RxDescIndex].ui32CtrlStatus |= DES0_RX_CTRL_OWN; myudp_init(); udp_server_connected(UDP_SERVER_PORT,0); // 用于UDP广播(未指定客户端端口) // Main Application Loop. i32PeriodicTimer = 0; i32ARPTimer = 0; uip_len = 1; while(1) { // Wait for an event to occur. This can be either a System Tick event, // or an RX Packet event. while(!g_ui32Flags) { } // If SysTick, Clear the SysTick interrupt flag and increment the // timers. if(HWREGBITW(&g_ui32Flags, FLAG_SYSTICK) == 1) { HWREGBITW(&g_ui32Flags, FLAG_SYSTICK) = 0; i32PeriodicTimer += SYSTICKMS; i32ARPTimer += SYSTICKMS; } if (u8NetFlag) { HWREG(GPIO_PORTE_BASE + (GPIO_O_DATA + (GPIO_PIN_3 << 2))) = 0; u8NetFlag++; if (u8NetFlag >= 25) { u8NetFlag = 0; HWREG(GPIO_PORTE_BASE + (GPIO_O_DATA + (GPIO_PIN_3 << 2))) = GPIO_PIN_3; } } // 串口接收转发处理 SmartUartPoll(); SmartSpiUartPoll(); if (1 == u8NetSendFlag) { u8NetSendFlag = 0; PacketTransmit(EMAC0_BASE, uip_buf, uip_len); uip_len = 0; } else if (2 == u8NetSendFlag) { Udp_SendData(u8Test,sizeof(u8Test)); uip_arp_out(); u8NetSendFlag = 0; PacketTransmit(EMAC0_BASE, uip_buf, uip_len); uip_len = 0; } // Check for an RX Packet and read it. if(HWREGBITW(&g_ui32Flags, FLAG_RXPKT)) { // Clear the RX Packet event flag. HWREGBITW(&g_ui32Flags, FLAG_RXPKT) = 0; // Get the packet and set uip_len for uIP stack usage. uip_len = (unsigned short)PacketReceive(EMAC0_BASE, uip_buf,sizeof(g_pui8UIPBuffer)); // Process incoming IP packets here. if (BUF->type == htons(UIP_ETHTYPE_IP)) { uip_arp_ipin(); // 进行IP包Arp部分的处理(更新ARP缓冲表) uip_input(); // 处理缓存uip_buf中的IP数据 // If the above function invocation resulted in data that // should be sent out on the network, the global variable // uip_len is set to a value > 0. if (uip_len > 0) { uip_arp_out(); PacketTransmit(EMAC0_BASE, uip_buf, uip_len); uip_len = 0; /*************本次应答后更新网络相关参数**********************/ if (1 == u8UpdateParaFlag) { sTempAddr.addr[0] = u8HostMACAddr[0]; sTempAddr.addr[1] = u8HostMACAddr[1]; sTempAddr.addr[2] = u8HostMACAddr[2]; sTempAddr.addr[3] = u8HostMACAddr[3]; sTempAddr.addr[4] = u8HostMACAddr[4]; sTempAddr.addr[5] = u8HostMACAddr[5]; /* ui32User0 = (uint32_t)(0x000000ff & u8HostMACAddr[0]) | (uint32_t)((0x000000ff & u8HostMACAddr[1]) << 8) | (uint32_t)((0x000000ff & u8HostMACAddr[2]) << 16); ui32User1 = (uint32_t)(0x000000ff & u8HostMACAddr[3]) | (uint32_t)((0x000000ff & u8HostMACAddr[4]) << 8) | (uint32_t)((0x000000ff & u8HostMACAddr[5]) << 16); FlashUserSet(ui32User0,ui32User1); */ /************************************下列参数实时更新***************************************/ if ((uip_ethaddr.addr[0] != sTempAddr.addr[0]) || (uip_ethaddr.addr[1] != sTempAddr.addr[1]) || (uip_ethaddr.addr[0] != sTempAddr.addr[2]) || (uip_ethaddr.addr[1] != sTempAddr.addr[3]) || (uip_ethaddr.addr[0] != sTempAddr.addr[4]) || (uip_ethaddr.addr[1] != sTempAddr.addr[5])) { for(i = 0; i < 4; ++i) { arp_table[i].ipaddr[0] = 0; arp_table[i].ipaddr[1] = 0; } } EMACAddrGet(EMAC0_BASE,0,(uint8_t *)&sTempAddr1); EMACAddrGet(EMAC0_BASE,0,(uint8_t *)&sTempAddr1); EMACAddrGet(EMAC0_BASE,0,(uint8_t *)&sTempAddr1); EMACAddrGet(EMAC0_BASE,0,(uint8_t *)&sTempAddr1); ROM_EMACAddrSet(EMAC0_BASE, 0, (uint8_t *)&sTempAddr); Delay_us(500); uip_ethaddr.addr[0] = u8HostMACAddr[0]; uip_ethaddr.addr[1] = u8HostMACAddr[1]; uip_ethaddr.addr[2] = u8HostMACAddr[2]; uip_ethaddr.addr[3] = u8HostMACAddr[3]; uip_ethaddr.addr[4] = u8HostMACAddr[4]; uip_ethaddr.addr[5] = u8HostMACAddr[5]; uip_hostaddr[0] = u8HostIpAddr[0]; uip_hostaddr[1] = u8HostIpAddr[1]; uip_netmask[0] = u8HostNetMask[0]; uip_netmask[1] = u8HostNetMask[1]; uip_draddr[0] = u8HostGetWay[0]; uip_draddr[1] = u8HostGetWay[1]; // 将新数据写入EEPROM EEPROMProgram((uint32_t *)ipSeting,0x0400,sizeof(ipSeting)); u8UpdateParaFlag = 0; // 清零 } /*************本次应答后更新网络相关参数**********************/ } } // Process incoming ARP packets here. else if(BUF->type == htons(UIP_ETHTYPE_ARP)) { // uip_arp_arpin判断ARP包的类型是响应包还是请求包，如果是响应包，那么更新ARP表。 // 如果是请求包，那么发送ARP回复帧包括本机的IP地址和MAC地址 uip_arp_arpin(); // If the above function invocation resulted in data that // should be sent out on the network, the global variable // uip_len is set to a value > 0. if(uip_len > 0) { PacketTransmit(EMAC0_BASE, uip_buf, uip_len); uip_len = 0; } } } // Process TCP/IP Periodic Timer here. if (i32PeriodicTimer > UIP_PERIODIC_TIMER_MS) { i32PeriodicTimer = 0; for(ui32Temp = 0; ui32Temp < UIP_CONNS; ui32Temp++) { uip_periodic(ui32Temp); // If the above function invocation resulted in data that // should be sent out on the network, the global variable // uip_len is set to a value > 0. if(uip_len > 0) { uip_arp_out(); PacketTransmit(EMAC0_BASE, uip_buf, uip_len); uip_len = 0; } } #if UIP_UDP for(ui32Temp = 0; ui32Temp < UIP_UDP_CONNS; ui32Temp++) { uip_udp_periodic(ui32Temp); // If the above function invocation resulted in data that // should be sent out on the network, the global variable // uip_len is set to a value > 0. if(uip_len > 0) { uip_arp_out(); PacketTransmit(EMAC0_BASE, uip_buf, uip_len); uip_len = 0; } } #endif } // Process ARP Timer here. if(i32ARPTimer > UIP_ARP_TIMER_MS) { i32ARPTimer = 0; uip_arp_timer(); } } }
根据经验看，应该是你初始化完成后，有什么没有通讯上的问题。你可以在某些初始化后面加个延时试试，或者加入状态判断机制。
