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[SCM] LWIP DL : 0: 本实验所需器材：STM32F407开发板块，网线一根。本实验将实现如下功能：用网线将开发板连接到路由器上。开机的时候将初始化LAN8720、LWIP协议栈等，LAN8720会自动与路由器或者电脑进行自协商，通过自协商确定连接速度与双工状态。如果开启了DHCP的话开发板就会通过路由器获取IP地址，如果没有路由器的话只能使用静态IP地址，我们默认的静态IP地址为:192.168.1.30,子网掩码：255.255.255.0，默认网关:192.168.1.1。当DHCP获取IP地址信息成功后就会在LCD上显示，我们可以通过ping开发板的IP地址查看网络是否正常，如果通过DHCP获取IP地址失败的话就会自动使用默认的IP地址。-This experiment required equipment: STM32F407 development plate, a network cable. This experiment will achieve the following functions: using the network cable will be connected to the router development board. Boot time will initialize the LAN8720, LWIP protocol stack, LAN8720 will automatically with the router or computer to negotiate, determine the connection speed and the status of the duplex through self negotiation. If you open the DHCP development board will be through a router to obtain IP address, if no router would only use static IP address, we assume a static IP address: 192.168.1.30, subnet mask: 255.255.255.0, default gateway: 192.168.1.1. When the DHCP to obtain IP address information will be in the LCD display, we can through the IP address of the Ping development board view network is normal if the DHCP access failure of IP address, then it will automatically use the default IP address.
Date : 2025-12-23 Size : 1.22mb User : Wu