【得捷电子Follow me第4期】基础任务一：静态IP配置,ping通,抓取报文

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【得捷电子Follow me第4期】基础任务一：静态IP配置,ping通,抓取报文 [复制链接]

 

【Follow me 第4期任务】基础任务一：完成主控板W5500初始化(静态IP配置)，并能使用局域网电脑ping通，同时W5500可以ping通互联网站点；通过抓包软件(Wireshark、Sniffer等)抓取本地PC的ping报文，展示并分析。

1.静态IP配置

首先给开发板配置静态IP地址：这里借用到官方的现有历程。

from usocket import socket
from machine import Pin,SPI
import network
import time

spi=SPI(0,2_000_000, mosi=Pin(19),miso=Pin(16),sck=Pin(18))
nic = network.WIZNET5K(spi,Pin(17),Pin(20))
nic.active(True)
nic.ifconfig(('192.168.2.114','255.255.255.0','192.168.2.1','8.8.8.8'))
    print('IP address :', nic.ifconfig())
    while not nic.isconnected():
        time.sleep(1)
        print(nic.regs())

上电，烧录代码调试：

2.使用局域网电脑ping通

使用电脑CMD终端PING配置好的开发板静态IP地址：  （Win+R,cmd）

 

可以看到一切连接正常，电脑可以PING到该地址

 

3.将开发板的IP 地址显示到屏幕上：

代码如下所示：

from machine import Pin,SPI,PWM
from usocket import socket

import network
import framebuf
import time

BL = 13
DC = 8
RST = 12
MOSI = 11
SCK = 10
CS = 9

def w5x00_init():
    spi=SPI(0,2_000_000, mosi=Pin(19),miso=Pin(16),sck=Pin(18))
    nic = network.WIZNET5K(spi,Pin(17),Pin(20))
    nic.active(True)
    nic.ifconfig(('192.168.2.114','255.255.255.0','192.168.2.1','8.8.8.8'))
    print('IP address :', nic.ifconfig())
    while not nic.isconnected():
        time.sleep(1)
        print(nic.regs())
    
class LCD_1inch14(framebuf.FrameBuffer):
    def __init__(self):
        self.width = 240
        self.height = 135
        
        self.cs = Pin(CS,Pin.OUT)
        self.rst = Pin(RST,Pin.OUT)
        
        self.cs(1)
        self.spi = SPI(1)
        self.spi = SPI(1,1000_000)
        self.spi = SPI(1,10000_000,polarity=0, phase=0,sck=Pin(SCK),mosi=Pin(MOSI),miso=None)
        self.dc = Pin(DC,Pin.OUT)
        self.dc(1)
        self.buffer = bytearray(self.height * self.width * 2)
        super().__init__(self.buffer, self.width, self.height, framebuf.RGB565)
        self.init_display()
        
        self.red   =   0x07E0
        self.green =   0x001f
        self.blue  =   0xf800
        self.white =   0xffff
        
    def write_cmd(self, cmd):
        self.cs(1)
        self.dc(0)
        self.cs(0)
        self.spi.write(bytearray([cmd]))
        self.cs(1)

    def write_data(self, buf):
        self.cs(1)
        self.dc(1)
        self.cs(0)
        self.spi.write(bytearray([buf]))
        self.cs(1)

    def init_display(self):
        """Initialize dispaly"""  
        self.rst(1)
        self.rst(0)
        self.rst(1)
        
        self.write_cmd(0x36)
        self.write_data(0x70)

        self.write_cmd(0x3A) 
        self.write_data(0x05)

        self.write_cmd(0xB2)
        self.write_data(0x0C)
        self.write_data(0x0C)
        self.write_data(0x00)
        self.write_data(0x33)
        self.write_data(0x33)

        self.write_cmd(0xB7)
        self.write_data(0x35) 

        self.write_cmd(0xBB)
        self.write_data(0x19)

        self.write_cmd(0xC0)
        self.write_data(0x2C)

        self.write_cmd(0xC2)
        self.write_data(0x01)

        self.write_cmd(0xC3)
        self.write_data(0x12)   

        self.write_cmd(0xC4)
        self.write_data(0x20)

        self.write_cmd(0xC6)
        self.write_data(0x0F) 

        self.write_cmd(0xD0)
        self.write_data(0xA4)
        self.write_data(0xA1)

        self.write_cmd(0xE0)
        self.write_data(0xD0)
        self.write_data(0x04)
        self.write_data(0x0D)
        self.write_data(0x11)
        self.write_data(0x13)
        self.write_data(0x2B)
        self.write_data(0x3F)
        self.write_data(0x54)
        self.write_data(0x4C)
        self.write_data(0x18)
        self.write_data(0x0D)
        self.write_data(0x0B)
        self.write_data(0x1F)
        self.write_data(0x23)

        self.write_cmd(0xE1)
        self.write_data(0xD0)
        self.write_data(0x04)
        self.write_data(0x0C)
        self.write_data(0x11)
        self.write_data(0x13)
        self.write_data(0x2C)
        self.write_data(0x3F)
        self.write_data(0x44)
        self.write_data(0x51)
        self.write_data(0x2F)
        self.write_data(0x1F)
        self.write_data(0x1F)
        self.write_data(0x20)
        self.write_data(0x23)
        
        self.write_cmd(0x21)

        self.write_cmd(0x11)

        self.write_cmd(0x29)

    def show(self):
        self.write_cmd(0x2A)
        self.write_data(0x00)
        self.write_data(0x28)
        self.write_data(0x01)
        self.write_data(0x17)
        
        self.write_cmd(0x2B)
        self.write_data(0x00)
        self.write_data(0x35)
        self.write_data(0x00)
        self.write_data(0xBB)
        
        self.write_cmd(0x2C)
        
        self.cs(1)
        self.dc(1)
        self.cs(0)
        self.spi.write(self.buffer)
        self.cs(1)
        

if __name__=='__main__':
    pwm = PWM(Pin(BL))
    pwm.freq(1000)
    pwm.duty_u16(32768)#max 65535

    LCD = LCD_1inch14()
    #color BRG
    LCD.fill(LCD.white)

    w5x00_init()
    LCD.text("Follow me NO.4",20,20,LCD.red)
    LCD.text("Basic Task 1:",20,40,LCD.green)
    LCD.text("ping:192.168.2.114",20,60,LCD.red)
    LCD.text("by ee_jark",20,80,LCD.blue)
    LCD.show()
   
    time.sleep(1)
    LCD.fill(0xFFFF)

烧录之后的效果如图：

4.抓取本地PC的ping报文，展示并分析：

在PING开发板的同时，使用Wireshark 抓取PC端PING开发板的包：

可以看到PC端（110）到开发板（114）的完整信息包如下：

  

以图中第786条为例，分析该报文内容为：

由于作者写到这里的时间有点晚了，先写道这里，开发板PING网站的部分等下一篇文章补充。

Jacktang

静态IP配置,ping通,抓取报文整的不错，期待开发板PING网站的部分，，，，

lugl4313820

4.抓取本地PC的ping报文，展示并分析：

在PING开发板的同时，使用Wireshark 抓取PC端PING开发板的包：

可以看到PC端（110）到开发板（114）的完整信息包如下：

强！