本帖最后由 bitter 于 2024-2-24 23:47 编辑
【得捷Follow me第4期】项目总结
很高兴能参加得捷电子Follow me第4期活动。
一、任务实现视频
【得捷Follow me第4期】项目总结-【得捷Follow me第4期】项目总结-EEWORLD大学堂
二、项目任务总结报告
1.入门任务：开发环境搭建，BLINK，驱动液晶显示器进行显示（没有则串口HelloWorld）
W5500-EVB-PICO(主控)
AdafruitSharp Memory Display(显示)
根据相关资料，显示模块是通过SPI接口操作的，所以需要选定主控合适的引脚与显示模块引脚连接，完成spi驱动，选择以下引脚向连接。
| W5500-EVB-PICO |
AdafruitSharp Memory Display |
| GPIO13 |
CS |
| GPIO14 |
CLK |
| GPIO15 |
DI |
| GND |
GND |
| 3V3 |
VIN |
安装完成后，打开，点击右下角对应的端口即可。
下载固件：
将开发板通过micro USB线接电脑，按住BOOTSEL键后再短按一下RUN键，最后松开BOOTSEL键，电脑会将开发板识别成U盘。
将前面下载好的固件复制到此U盘，复制完成后开发板会自动重启，至此固件烧录完成。
这里需要注意，我们应该选择与之前下载的固件版本对应的库下载。
将下载的压缩包解压，并将需要的库文件复制到CIRCUITPY的盘符的lib文件夹下。
这里需要将font5x8.bin文件放入CIRCUITPY的盘符下，否则后续使用将报错。
屏幕显示相关文字，并且每0.5s闪烁LED灯。
import time
import board
import busio
import digitalio
import adafruit_sharpmemorydisplay
def led_flush():
led.value = not led.value
time.sleep(0.5)
def clear_disp():
# Clear the display. Always call show after changing pixels to make the display
# update visible!
display.fill(1)
display.show()
def disp_helloworld():
print("hello world")
display.fill(1)
display.text(" hello world!", 30, 50, 0)
display.show()
if __name__ == '__main__':
led = digitalio.DigitalInOut(board.GP25)
led.direction = digitalio.Direction.OUTPUT
# Initialize SPI bus and control pins
spi = busio.SPI(board.GP14, MOSI=board.GP15)
scs = digitalio.DigitalInOut(board.GP13) # inverted chip select
# pass in the display size, width and height, as well
# display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 96, 96)
display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 144, 168)
clear_disp()
disp_helloworld()
while True:
led_flush()
2.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。
- 实现过程
将以下库文件复制到CIRCUITPY的盘符的lib文件夹下。
根据相关资料，RP2040与W5500引脚连接如下：
将W5500-EVB-PICO接入网络，并确保与本机IP地址处于同一网段。
查询本机IP地址为192.168.6.4
配置w5500的IP地址为192.168.6.100，网关为192.168.6.1
效果图
本地PC Ping W5500-EVB-PICO
抓包软件Wireshark抓取本地PC的ping报文
- 相关代码
屏幕初始化
def init():
led = digitalio.DigitalInOut(board.GP25)
led.direction = digitalio.Direction.OUTPUT
# Initialize SPI bus and control pins
spi = busio.SPI(board.GP14, MOSI=board.GP15)
scs = digitalio.DigitalInOut(board.GP13) # inverted chip select
# pass in the display size, width and height, as well
# display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 96, 96)
display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 144, 168)
return led,display
w5500初始化
def init_w5500(ip, subnet, gateway, dns):
##SPI0
SPI0_SCK = board.GP18
SPI0_TX = board.GP19
SPI0_RX = board.GP16
SPI0_CSn = board.GP17
##reset
W5x00_RSTn = board.GP20
print("Wiznet5k Ping Test (no DHCP)")
ethernetRst = digitalio.DigitalInOut(W5x00_RSTn)
ethernetRst.direction = digitalio.Direction.OUTPUT
# For Adafruit Ethernet FeatherWing
cs = digitalio.DigitalInOut(SPI0_CSn)
# For Particle Ethernet FeatherWing
# cs = digitalio.DigitalInOut(board.D5)
spi_bus = busio.SPI(SPI0_SCK, MOSI=SPI0_TX, MISO=SPI0_RX)
# Reset W5500 first
ethernetRst.value = False
time.sleep(1)
ethernetRst.value = True
# Initialize ethernet interface without DHCP
eth = WIZNET5K(spi_bus, cs, is_dhcp=False)
# Set network configuration
eth.ifconfig = (ip, subnet, gateway, dns)
print("Chip Version:", eth.chip)
print("My IP address is:", eth.pretty_ip(eth.ip_address))
return eth
完整代码
import time
import board
import busio
import digitalio
import array
import struct
import adafruit_sharpmemorydisplay
from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
import adafruit_wiznet5k.adafruit_wiznet5k_socket as socket
IP_ADDRESS = (192, 168, 6, 100)
SUBNET_MASK = (255, 255, 255, 0)
GATEWAY_ADDRESS = (192, 168, 6, 1)
DNS_SERVER = (8, 8, 8, 8)
def init():
led = digitalio.DigitalInOut(board.GP25)
led.direction = digitalio.Direction.OUTPUT
# Initialize SPI bus and control pins
spi = busio.SPI(board.GP14, MOSI=board.GP15)
scs = digitalio.DigitalInOut(board.GP13) # inverted chip select
# pass in the display size, width and height, as well
# display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 96, 96)
display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 144, 168)
return led,display
def led_flush():
led.value = not led.value
time.sleep(0.5)
def clear_disp():
# Clear the display. Always call show after changing pixels to make the display
# update visible!
display.fill(1)
display.show()
def init_w5500(ip, subnet, gateway, dns):
##SPI0
SPI0_SCK = board.GP18
SPI0_TX = board.GP19
SPI0_RX = board.GP16
SPI0_CSn = board.GP17
##reset
W5x00_RSTn = board.GP20
print("Wiznet5k Ping Test (no DHCP)")
ethernetRst = digitalio.DigitalInOut(W5x00_RSTn)
ethernetRst.direction = digitalio.Direction.OUTPUT
# For Adafruit Ethernet FeatherWing
cs = digitalio.DigitalInOut(SPI0_CSn)
# For Particle Ethernet FeatherWing
# cs = digitalio.DigitalInOut(board.D5)
spi_bus = busio.SPI(SPI0_SCK, MOSI=SPI0_TX, MISO=SPI0_RX)
# Reset W5500 first
ethernetRst.value = False
time.sleep(1)
ethernetRst.value = True
# Initialize ethernet interface without DHCP
eth = WIZNET5K(spi_bus, cs, is_dhcp=False)
# Set network configuration
eth.ifconfig = (ip, subnet, gateway, dns)
print("Chip Version:", eth.chip)
print("My IP address is:", eth.pretty_ip(eth.ip_address))
return eth
def disp_w5500():
clear_disp()
display.fill(1)
cst = "chip version:" + eth.chip
display.text(cst, 0, 0, 0)
cst = "ip:" + eth.pretty_ip(eth.ip_address)
display.text(cst, 0, 10, 0)
cst = "mac:" + eth.pretty_mac(eth.mac_address)
display.text(cst, 0, 20, 0)
display.show()
if __name__ == '__main__':
# 初始化led和显示模块
led,display = init()
#静态初始化w5500
eth = init_w5500(IP_ADDRESS, SUBNET_MASK, GATEWAY_ADDRESS, DNS_SERVER)
disp_w5500()
while True:
led_flush()
3.基础任务二：主控板建立TCPIP或UDP服务器，局域网PC使用TCPIP或UDP客户端进行连接并发送数据，主控板接收到数据后，送液晶屏显示(没有则通过串口打印显示)；通过抓包软件抓取交互报文，展示并分析。(TCP和UDP二选一，或者全都操作)
- 实现过程
TCP连接过程
创建TCP服务器
使用调试工具连接
数据发送报错，不清楚是什么问题
- 相关代码
建立tcp服务器
def create_tcpserver(port):
# Initialize a socket for our server
socket.set_interface(eth)
server = socket.socket() # Allocate socket for the server
server_ip = None # IP address of server
server_port = port # Port to listen on
server.bind((server_ip, server_port)) # Bind to IP and Port
server.listen() # Begin listening for incoming clients
return server
完整代码
import time
import board
import busio
import digitalio
import array
import struct
import adafruit_sharpmemorydisplay
from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
import adafruit_wiznet5k.adafruit_wiznet5k_socket as socket
IP_ADDRESS = (192, 168, 6, 100)
SUBNET_MASK = (255, 255, 255, 0)
GATEWAY_ADDRESS = (192, 168, 6, 1)
DNS_SERVER = (8, 8, 8, 8)
def init():
led = digitalio.DigitalInOut(board.GP25)
led.direction = digitalio.Direction.OUTPUT
# Initialize SPI bus and control pins
spi = busio.SPI(board.GP14, MOSI=board.GP15)
scs = digitalio.DigitalInOut(board.GP13) # inverted chip select
# pass in the display size, width and height, as well
# display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 96, 96)
display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 144, 168)
return led,display
def led_flush():
led.value = not led.value
time.sleep(0.5)
def clear_disp():
# Clear the display. Always call show after changing pixels to make the display
# update visible!
display.fill(1)
display.show()
def init_w5500(ip, subnet, gateway, dns):
##SPI0
SPI0_SCK = board.GP18
SPI0_TX = board.GP19
SPI0_RX = board.GP16
SPI0_CSn = board.GP17
##reset
W5x00_RSTn = board.GP20
ethernetRst = digitalio.DigitalInOut(W5x00_RSTn)
ethernetRst.direction = digitalio.Direction.OUTPUT
# For Adafruit Ethernet FeatherWing
cs = digitalio.DigitalInOut(SPI0_CSn)
# For Particle Ethernet FeatherWing
# cs = digitalio.DigitalInOut(board.D5)
spi_bus = busio.SPI(SPI0_SCK, MOSI=SPI0_TX, MISO=SPI0_RX)
# Reset W5500 first
ethernetRst.value = False
time.sleep(1)
ethernetRst.value = True
# Initialize ethernet interface without DHCP
eth = WIZNET5K(spi_bus, cs, is_dhcp=False)
# Set network configuration
eth.ifconfig = (ip, subnet, gateway, dns)
print("Chip Version:", eth.chip)
print("My IP address is:", eth.pretty_ip(eth.ip_address))
return eth
def disp_w5500():
clear_disp()
display.fill(1)
cst = "chip version:" + eth.chip
display.text(cst, 0, 0, 0)
cst = "ip:" + eth.pretty_ip(eth.ip_address)
display.text(cst, 0, 10, 0)
cst = "mac:" + eth.pretty_mac(eth.mac_address)
display.text(cst, 0, 20, 0)
display.show()
def disp_str(s, addr):
display.fill_rect(0,addr,144,10,1)
display.text(s, 0, addr, 0)
display.show()
def create_tcpserver(port):
# Initialize a socket for our server
socket.set_interface(eth)
server = socket.socket() # Allocate socket for the server
server_ip = None # IP address of server
server_port = port # Port to listen on
server.bind((server_ip, server_port)) # Bind to IP and Port
server.listen() # Begin listening for incoming clients
return server
if __name__ == '__main__':
# 初始化led和显示模块
led,display = init()
clear_disp()
#静态初始化w5500
eth = init_w5500(IP_ADDRESS, SUBNET_MASK, GATEWAY_ADDRESS, DNS_SERVER)
disp_w5500()
# 创建一个tcp服务器
server = create_tcpserver(5000)
conn, addr = server.accept() # Wait for a connection from a client.
print("socket connected")
print(addr)
disp_str("TCP Server TEST", 30)
disp_str('client:'+addr[0]+','+str(addr[1]), 50)
disp_str('receive:', 60)
linenum = 70
while True:
led_flush()
with server:
while True:
data = conn.recv(20)
if data:
print(data)
disp_str(data.decode('utf-8'),linenum)
linenum += 10
if linenum > 150:
linenum = 70
4.进阶任务：从NTP服务器(注意数据交互格式的解析)同步时间，获取时间送显示屏(串口)显示。
- 实现过程
不知道为什么使用CircuitPython官方例程都报错
所以更换MicroPython，这里参考了@太阳上的骑士的代码
实现效果
- 相关代码
完整代码
from usocket import socket
from machine import Pin,SPI,UART,RTC
import network
import time
import ntptime
uart = UART(0, baudrate=115200, bits=8, stop=1)
#W5x00 chip init
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)) #spi,cs,reset pin
nic.active(True)
#None DHCP
nic.ifconfig(('192.168.6.100','255.255.255.0','192.168.6.1','8.8.8.8'))
#DHCP
#nic.ifconfig('dhcp')
print('IP address :', nic.ifconfig())
while not nic.isconnected():
time.sleep(1)
#print(nic.regs())
def show_local_time(timezone=8):
rtc = RTC()
now = time.time()
now += timezone * 3600
t = time.localtime(now)
print(f'{t[0]} - {t[1]:02d}-{t[2]:02d} {t[3]:02d}:{t[4]:02d}:{t[5]:02d}')
uart.write(f'{t[0]} - {t[1]:02d}-{t[2]:02d} {t[3]:02d}:{t[4]:02d}:{t[5]:02d}')
def main():
w5x00_init()
#先手动设置一个错误时间，模拟系统时间不准
rtc = RTC()
rtc.datetime((2020, 1, 1, 3, 9, 0, 0, 0)) #年、月、日、星期、时、分、秒、亚秒
print('校时前系统时间：')
show_local_time()
#NTP校时
print('开始NTP校时...')
ntptime.host = 'ntp1.aliyun.com'
ntptime.settime()
print(f'校时后系统时间：')
show_local_time()
while True:
show_local_time()
time.sleep(1)
if __name__ == "__main__":
main()
5.终极任务二：使用外部存储器，组建简易FTP文件服务器，并能正常上传下载文件。
- 实现过程
这里参考了@ eew_uscYT9的代码
在window的文件夹内搜索ftp服务器
将文件文件拖入其中
断开连接，重新访问
下载文件
- 相关代码
完整代码
#
# Small ftp server for ESP8266 ans ESP32 Micropython
#
# Based on the work of chrisgp - Christopher Popp and pfalcon - Paul Sokolovsky
#
# The server accepts passive mode only.
# It runs in foreground and quits, when it receives a quit command
# Start the server with:
#
# import ftp
#
# Copyright (c) 2016 Christopher Popp (initial ftp server framework)
# Copyright (c) 2016 Robert Hammelrath (putting the pieces together
# and a few extensions)
# Distributed under MIT License
#
import socket
import network
import uos
import gc
#from usocket import socket
from machine import Pin,SPI,UART,PWM
import time, network,framebuf
''' static netinfo
'''
ip = '192.168.6.100'
sn = '255.255.255.0'
gw = '192.168.6.1'
dns= '8.8.8.8'
BL = 13
DC = 8
RST = 12
MOSI = 11
SCK = 10
CS = 9
netinfo=(ip, sn, gw, dns)
localip = ''
localport = 8000
listen_info = (localip, localport)
conn_flag = False
def w5x00_init():
global localip
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)
# use dhcp, if fail use static netinfo
#try:
# nic.ifconfig('dhcp')
#except:
nic.ifconfig(netinfo)
localip = nic.ifconfig()[0]
print('ip :', nic.ifconfig()[0])
print('sn :', nic.ifconfig()[1])
print('gw :', nic.ifconfig()[2])
print('dns:', nic.ifconfig()[3])
while not nic.isconnected():
time.sleep(1)
# print(nic.regs())
print('no link')
return nic
def send_list_data(path, dataclient, full):
try: # whether path is a directory name
for fname in sorted(uos.listdir(path), key=str.lower):
dataclient.sendall(make_description(path, fname, full))
except: # path may be a file name or pattern
pattern = path.split("/")[-1]
path = path[:-(len(pattern) + 1)]
if path == "":
path = "/"
for fname in sorted(uos.listdir(path), key=str.lower):
if fncmp(fname, pattern):
dataclient.sendall(make_description(path, fname, full))
def make_description(path, fname, full):
if full:
stat = uos.stat(get_absolute_path(path, fname))
file_permissions = ("drwxr-xr-x"
if (stat[0] & 0o170000 == 0o040000)
else "-rw-r--r--")
file_size = stat[6]
description = "{} 1 owner group {:>10} Jan 1 2000 {}\r\n".format(
file_permissions, file_size, fname)
else:
description = fname + "\r\n"
return description
def send_file_data(path, dataclient):
with open(path, "rb") as file:
chunk = file.read(512)
while len(chunk) > 0:
dataclient.sendall(chunk)
chunk = file.read(512)
def save_file_data(path, dataclient):
with open(path, "wb") as file:
chunk = dataclient.recv(512)
while len(chunk) > 0:
file.write(chunk)
chunk = dataclient.recv(512)
def get_absolute_path(cwd, payload):
# Just a few special cases "..", "." and ""
# If payload start's with /, set cwd to /
# and consider the remainder a relative path
if payload.startswith('/'):
cwd = "/"
for token in payload.split("/"):
if token == '..':
if cwd != '/':
cwd = '/'.join(cwd.split('/')[:-1])
if cwd == '':
cwd = '/'
elif token != '.' and token != '':
if cwd == '/':
cwd += token
else:
cwd = cwd + '/' + token
return cwd
# compare fname against pattern. Pattern may contain
# wildcards ? and *.
def fncmp(fname, pattern):
pi = 0
si = 0
while pi < len(pattern) and si < len(fname):
if (fname[si] == pattern[pi]) or (pattern[pi] == '?'):
si += 1
pi += 1
else:
if pattern[pi] == '*': # recurse
if (pi + 1) == len(pattern):
return True
while si < len(fname):
if fncmp(fname[si:], pattern[pi+1:]):
return True
else:
si += 1
return False
else:
return False
if pi == len(pattern.rstrip("*")) and si == len(fname):
return True
else:
return False
def ftpserver(net, port=21, timeout=None):
DATA_PORT = 13333
ftpsocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
datasocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
ftpsocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
datasocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
ftpsocket.bind(socket.getaddrinfo("0.0.0.0", port)[0][4])
datasocket.bind(socket.getaddrinfo("0.0.0.0", DATA_PORT)[0][4])
ftpsocket.listen(1)
ftpsocket.settimeout(timeout)
datasocket.listen(1)
datasocket.settimeout(None)
msg_250_OK = '250 OK\r\n'
msg_550_fail = '550 Failed\r\n'
addr = net.ifconfig()[0]
print("FTP Server started on ", addr)
try:
dataclient = None
fromname = None
do_run = True
while do_run:
cl, remote_addr = ftpsocket.accept()
cl.settimeout(300)
cwd = '/'
try:
# print("FTP connection from:", remote_addr)
cl.sendall("220 Hello, this is Micropython.\r\n")
while True:
gc.collect()
data = cl.readline().decode("utf-8").rstrip("\r\n")
if len(data) <= 0:
print("Client disappeared")
do_run = False
break
command = data.split(" ")[0].upper()
payload = data[len(command):].lstrip()
path = get_absolute_path(cwd, payload)
print("Command={}, Payload={}".format(command, payload))
if command == "USER":
cl.sendall("230 Logged in.\r\n")
elif command == "SYST":
cl.sendall("215 UNIX Type: L8\r\n")
elif command == "NOOP":
cl.sendall("200 OK\r\n")
elif command == "FEAT":
cl.sendall("211 no-features\r\n")
elif command == "PWD" or command == "XPWD":
cl.sendall('257 "{}"\r\n'.format(cwd))
elif command == "CWD" or command == "XCWD":
try:
files = uos.listdir(path)
cwd = path
cl.sendall(msg_250_OK)
except:
cl.sendall(msg_550_fail)
elif command == "CDUP":
cwd = get_absolute_path(cwd, "..")
cl.sendall(msg_250_OK)
elif command == "TYPE":
# probably should switch between binary and not
cl.sendall('200 Transfer mode set\r\n')
elif command == "SIZE":
try:
size = uos.stat(path)[6]
cl.sendall('213 {}\r\n'.format(size))
except:
cl.sendall(msg_550_fail)
elif command == "QUIT":
cl.sendall('221 Bye.\r\n')
do_run = False
break
elif command == "PASV":
cl.sendall('227 Entering Passive Mode ({},{},{}).\r\n'.
format(addr.replace('.', ','), DATA_PORT >> 8,
DATA_PORT % 256))
dataclient, data_addr = datasocket.accept()
print("FTP Data connection from:", data_addr)
DATA_PORT = 13333
active = False
elif command == "PORT":
items = payload.split(",")
if len(items) >= 6:
data_addr = '.'.join(items[:4])
# replace by command session addr
if data_addr == "127.0.1.1":
data_addr = remote_addr
DATA_PORT = int(items[4]) * 256 + int(items[5])
dataclient = socket.socket(socket.AF_INET,
socket.SOCK_STREAM)
dataclient.settimeout(10)
dataclient.connect((data_addr, DATA_PORT))
print("FTP Data connection with:", data_addr)
cl.sendall('200 OK\r\n')
active = True
else:
cl.sendall('504 Fail\r\n')
elif command == "LIST" or command == "NLST":
if not payload.startswith("-"):
place = path
else:
place = cwd
try:
cl.sendall("150 Here comes the directory listing.\r\n")
send_list_data(place, dataclient,
command == "LIST" or payload == "-l")
cl.sendall("226 Listed.\r\n")
except:
cl.sendall(msg_550_fail)
if dataclient is not None:
dataclient.close()
dataclient = None
elif command == "RETR":
try:
cl.sendall("150 Opening data connection.\r\n")
send_file_data(path, dataclient)
cl.sendall("226 Transfer complete.\r\n")
except:
cl.sendall(msg_550_fail)
if dataclient is not None:
dataclient.close()
dataclient = None
elif command == "STOR":
try:
cl.sendall("150 Ok to send data.\r\n")
save_file_data(path, dataclient)
cl.sendall("226 Transfer complete.\r\n")
except:
cl.sendall(msg_550_fail)
if dataclient is not None:
dataclient.close()
dataclient = None
elif command == "DELE":
try:
uos.remove(path)
cl.sendall(msg_250_OK)
except:
cl.sendall(msg_550_fail)
elif command == "RMD" or command == "XRMD":
try:
uos.rmdir(path)
cl.sendall(msg_250_OK)
except:
cl.sendall(msg_550_fail)
elif command == "MKD" or command == "XMKD":
try:
uos.mkdir(path)
cl.sendall(msg_250_OK)
except:
cl.sendall(msg_550_fail)
elif command == "RNFR":
fromname = path
cl.sendall("350 Rename from\r\n")
elif command == "RNTO":
if fromname is not None:
try:
uos.rename(fromname, path)
cl.sendall(msg_250_OK)
except:
cl.sendall(msg_550_fail)
else:
cl.sendall(msg_550_fail)
fromname = None
elif command == "MDTM":
try:
tm=localtime(uos.stat(path)[8])
cl.sendall('213 {:04d}{:02d}{:02d}{:02d}{:02d}{:02d}\r\n'.format(*tm[0:6]))
except:
cl.sendall('550 Fail\r\n')
elif command == "STAT":
if payload == "":
cl.sendall("211-Connected to ({})\r\n"
" Data address ({})\r\n"
"211 TYPE: Binary STRU: File MODE:"
" Stream\r\n".format(
remote_addr[0], addr))
else:
cl.sendall("213-Directory listing:\r\n")
send_list_data(path, cl, True)
cl.sendall("213 Done.\r\n")
else:
cl.sendall("502 Unsupported command.\r\n")
print("Unsupported command {} with payload {}".format(
command, payload))
except Exception as err:
print(err)
finally:
cl.close()
cl = None
except Exception as e:
print(e)
finally:
datasocket.close()
ftpsocket.close()
if dataclient is not None:
dataclient.close()
if __name__ == "__main__":
nic = w5x00_init()
ftpserver(nic)
三、心得体会
很高兴能够参加本期由EEWORLD和得捷电子共同举办得捷电子Follow me第4期活动。在这次活动，我了解了如何建立TCP或UDP连接，如何从NTP服务器同步时间，如何组建简易FTP文件服务器。
最后，希望电子工程世界和得捷电子越办越好，以后能够多多的举办这样的活动，也希望大家能够从中收获满满。
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