【得捷电子Follow me第4期】+项目总结

superw

【得捷电子Follow me第4期】+项目总结 [复制链接]

本帖最后由 superw 于 2024-2-26 11:28 编辑

内容一、演示视频

内容二、项目总结报告

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）

# 在这里写上你的代码 :-)
import time
import board
import busio
import digitalio
import adafruit_sharpmemorydisplay
def display_init():
#SPI1 Display
SPI1_SCK = board.GP10
SPI1_MOSI = board.GP11
SPI1_CSn = board.GP13
#配置display的SPI
display_spi = busio.SPI(SPI1_SCK, SPI1_MOSI)
display_scs = digitalio.DigitalInOut(SPI1_CSn)
display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(display_spi, display_scs, 144, 168, baudrate=8000000)
return display
def led_init():
#配置LED
led = digitalio.DigitalInOut(board.LED)
led.direction = digitalio.Direction.OUTPUT
return led
led=led_init()
display=display_init()
print("DigiKey & eeworld")
print("Follow me")
print("W5500-EVB-Pico with rp2040")
display.fill(0)
display.text(" DigiKey & eeworld", 0, 10, 1)
display.text(" Follow me", 0, 20, 1)
display.text(" W5500-EVB-Pico ", 0, 30, 1)
display.text(" with rp2040 ", 0, 40, 1)
display.show()
while True:
led.value = not led.value
time.sleep(0.5)

通过使用adafruit_sharpmemorydisplay库完成液晶显示器的驱动，同时点亮板载LED。

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。

# 在这里写上你的代码 :-)
import board
import busio
import digitalio
import time
import adafruit_sharpmemorydisplay
from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
def led_init():
#配置LED
led = digitalio.DigitalInOut(board.LED)
led.direction = digitalio.Direction.OUTPUT
return led
def display_init():
#SPI1 Display
SPI1_SCK = board.GP10
SPI1_MOSI = board.GP11
SPI1_CSn = board.GP13
#配置display的SPI
display_spi = busio.SPI(SPI1_SCK, SPI1_MOSI)
display_scs = digitalio.DigitalInOut(SPI1_CSn)
display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(display_spi, display_scs, 144, 168, baudrate=8000000)
return display
def w5500_init():
#SPI0 Ethernet
SPI0_SCK = board.GP18
SPI0_TX = board.GP19
SPI0_RX = board.GP16
SPI0_CSn = board.GP17
#Ethernet reset
W5500_RSTn = board.GP20
ethernetRst = digitalio.DigitalInOut(W5500_RSTn)
ethernetRst.direction = digitalio.Direction.OUTPUT
# Setup your network configuration below
# random MAC, later should change this value on your vendor ID
MY_MAC = (0x00, 0x01, 0x02, 0x03, 0x04, 0x05)
IP_ADDRESS = (192, 168, 1, 100)
SUBNET_MASK = (255, 255, 255, 0)
GATEWAY_ADDRESS = (192, 168, 1, 1)
DNS_SERVER = (8, 8, 8, 8)
# For Adafruit Ethernet FeatherWing
eth_cs = digitalio.DigitalInOut(SPI0_CSn)
# For Particle Ethernet FeatherWing
# cs = digitalio.DigitalInOut(board.D5)
eth_spi = 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 with DHCP
# eth = WIZNET5K(spi_bus, cs)
# Initialize ethernet interface without DHCP
eth = WIZNET5K(eth_spi, eth_cs, is_dhcp=False, mac=MY_MAC)
# Set network configuration
eth.ifconfig = (IP_ADDRESS, SUBNET_MASK, GATEWAY_ADDRESS, DNS_SERVER)
print("Chip Version:", eth.chip)
print("MAC Address:", [hex(i) for i in eth.mac_address])
print("My IP address is:", eth.pretty_ip(eth.ip_address))
display.text("Chip Version:"+eth.chip,0,20,0)
display.text("MAC Address:",0,30,0)
display.text(eth.pretty_mac(eth.mac_address),0,40,0)
display.text("My IP address is:",0,50,0)
display.text(eth.pretty_ip(eth.ip_address),0,60,0)
display.show()
return eth
led = led_init()
display = display_init()
print("Wiznet5k Ping Test (no DHCP)")
display.fill(1)
display.text("Wiznet5k Ping Test ",0,10,0)
display.show()
eth = w5500_init()
while True:
if eth.link_status == False:
print("PHY link is down...")
display.text("PHY link is down...",0,70,0)
display.show()
time.sleep(0.1)
else:
print("PHY link is up")
print("W5500 Connect Ethernet")
display.text("PHY link is up",0,80,0)
display.text("W5500 Connect Ethernet",0,90,0)
display.show()
break
while True:
led.value = not led.value
time.sleep(0.5)

circuitpython下由于水平有限，目前只实现了PC端主动ping设备，设备主动实现ping电脑暂未实现，后面继续学习。

抓包如下：

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)

import board
import busio
import digitalio
import time
import adafruit_sharpmemorydisplay
from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
import adafruit_wiznet5k.adafruit_wiznet5k_socket as socket
def led_init():
#配置LED
led = digitalio.DigitalInOut(board.LED)
led.direction = digitalio.Direction.OUTPUT
return led
def display_init():
#SPI1 Display
SPI1_SCK = board.GP10
SPI1_MOSI = board.GP11
SPI1_CSn = board.GP13
#配置display的SPI
display_spi = busio.SPI(SPI1_SCK, SPI1_MOSI)
display_scs = digitalio.DigitalInOut(SPI1_CSn)
display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(display_spi, display_scs, 144, 168, baudrate=8000000)
return display
def w5500_init():
#SPI0 Ethernet
SPI0_SCK = board.GP18
SPI0_TX = board.GP19
SPI0_RX = board.GP16
SPI0_CSn = board.GP17
#Ethernet reset
W5500_RSTn = board.GP20
ethernetRst = digitalio.DigitalInOut(W5500_RSTn)
ethernetRst.direction = digitalio.Direction.OUTPUT
# Setup your network configuration below
# random MAC, later should change this value on your vendor ID
MY_MAC = (0x00, 0x01, 0x02, 0x03, 0x04, 0x05)
IP_ADDRESS = (192, 168, 1, 100)
SUBNET_MASK = (255, 255, 255, 0)
GATEWAY_ADDRESS = (192, 168, 1, 1)
DNS_SERVER = (8, 8, 8, 8)
# For Adafruit Ethernet FeatherWing
eth_cs = digitalio.DigitalInOut(SPI0_CSn)
# For Particle Ethernet FeatherWing
# cs = digitalio.DigitalInOut(board.D5)
eth_spi = 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 with DHCP
# eth = WIZNET5K(spi_bus, cs)
# Initialize ethernet interface without DHCP
eth = WIZNET5K(eth_spi, eth_cs, is_dhcp=False, mac=MY_MAC)
# Set network configuration
eth.ifconfig = (IP_ADDRESS, SUBNET_MASK, GATEWAY_ADDRESS, DNS_SERVER)
print("Chip Version:", eth.chip)
print("MAC Address:", [hex(i) for i in eth.mac_address])
print("My IP address is:", eth.pretty_ip(eth.ip_address))
display.text("Chip Version:"+eth.chip,0,20,0)
display.text("MAC Address:",0,30,0)
display.text(eth.pretty_mac(eth.mac_address),0,40,0)
display.text("My IP address is:",0,50,0)
display.text(eth.pretty_ip(eth.ip_address),0,60,0)
display.show()
return eth
def create_tcp_socket(mode):
if mode == 1:
#创建tcp server
# Initialize a socket for our server
socket.set_interface(eth)
tcp_server = socket.socket() # Allocate socket for the server
server_ip = None # IP address of server
server_port = 5000 # Port to listen on
tcp_server.bind((server_ip, server_port)) # Bind to IP and Port
tcp_server.listen() # Begin listening for incoming clients
conn, addr = tcp_server.accept() # Wait for a connection from a client.
print("socket connected")
return conn
else:
#创建tcp client
print("create tcp client")
def create_udp_socket(mode):
if mode == 1:
#创建udp server
# Initialize a socket for our server
socket.set_interface(eth)
udp_server = socket.socket(socket.AF_INET,socket.SOCK_DGRAM) # Allocate socket for the server
server_ip = '192.168.1.59' # IP address of server
server_port = 5000 # Port to listen on
port = 5000
udp_server.bind((eth.pretty_ip(eth.ip_address),port))
print("socket connected")
else:
#创建tcp client
print("open socket")
print("Wiznet5k SimpleServer Test ")
led = led_init()
display = display_init()
display.fill(1)
display.text("Wiznet5k SimpleServer ",0,10,0)
display.show()
eth = w5500_init()
conn=create_tcp_socket(1)
display.text("client connected ",0,80,0)
display.text("recv data: ",0,90,0)
display.show()
while True:
led.value = not led.value
time.sleep(0.5)
with conn:
# data = conn.recv()
# print(data)
# conn.send(data) # Echo message back to client
while True:
data = conn.recv(10)
if data:
print(data)
display.text(hex(i) for i in data,0,100,0)
display.show()
conn.send(data) # Echo message back to client
break
print("Done!")

通过在板端构建TCP服务器，抓包可以明显看到其三次握手、四次挥手的过程，以及每次数据传输中需要频繁ACK，证实了TCP属于一种可靠且稳定的网络通信协议。

现象如图：

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

import board
import busio
import digitalio
import time
import adafruit_requests as requests
from adafruit_wiznet5k.adafruit_wiznet5k import *
import adafruit_wiznet5k.adafruit_wiznet5k_socket as socket
from adafruit_wiznet5k.adafruit_wiznet5k_ntp import NTP
import adafruit_wiznet5k.adafruit_wiznet5k_dns as dns
days = ("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday")
def led_init():
#配置LED
led = digitalio.DigitalInOut(board.LED)
led.direction = digitalio.Direction.OUTPUT
return led
def display_init():
#SPI1 Display
SPI1_SCK = board.GP10
SPI1_MOSI = board.GP11
SPI1_CSn = board.GP13
#配置display的SPI
display_spi = busio.SPI(SPI1_SCK, SPI1_MOSI)
display_scs = digitalio.DigitalInOut(SPI1_CSn)
display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(display_spi, display_scs, 144, 168, baudrate=8000000)
return display
def w5500_init():
#SPI0 Ethernet
SPI0_SCK = board.GP18
SPI0_TX = board.GP19
SPI0_RX = board.GP16
SPI0_CSn = board.GP17
#Ethernet reset
W5500_RSTn = board.GP20
ethernetRst = digitalio.DigitalInOut(W5500_RSTn)
ethernetRst.direction = digitalio.Direction.OUTPUT
# Setup your network configuration below
# random MAC, later should change this value on your vendor ID
MY_MAC = (0x00, 0x01, 0x02, 0x03, 0x04, 0x05)
IP_ADDRESS = (192, 168, 1, 100)
SUBNET_MASK = (255, 255, 255, 0)
GATEWAY_ADDRESS = (192, 168, 1, 1)
DNS_SERVER = (8, 8, 8, 8)
# For Adafruit Ethernet FeatherWing
eth_cs = digitalio.DigitalInOut(SPI0_CSn)
# For Particle Ethernet FeatherWing
# cs = digitalio.DigitalInOut(board.D5)
eth_spi = 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 with DHCP
# eth = WIZNET5K(spi_bus, cs)
# Initialize ethernet interface without DHCP
eth = WIZNET5K(eth_spi, eth_cs, is_dhcp=False, mac=MY_MAC)
# Set network configuration
eth.ifconfig = (IP_ADDRESS, SUBNET_MASK, GATEWAY_ADDRESS, DNS_SERVER)
print("Chip Version:", eth.chip)
print("MAC Address:", [hex(i) for i in eth.mac_address])
print("My IP address is:", eth.pretty_ip(eth.ip_address))
display.text("Chip Version:"+eth.chip,0,20,0)
display.text("MAC Address:",0,30,0)
display.text(eth.pretty_mac(eth.mac_address),0,40,0)
display.text("My IP address is:",0,50,0)
display.text(eth.pretty_ip(eth.ip_address),0,60,0)
display.show()
return eth
print("Wiznet5k ntp Test ")
led = led_init()
display = display_init()
display.fill(1)
display.text("Wiznet5k ntp Test",0,10,0)
display.show()
eth = w5500_init()
# Initialize a socket for our server
#socket.set_interface(eth)
# Set network configuration
#eth.ifconfig = (IP_ADDRESS, SUBNET_MASK, GATEWAY_ADDRESS, DNS_SERVER)
#NTP
ntpserver_ip = eth.pretty_ip(eth.get_host_by_name("time.google.com"))
print("NTP : %s" % ntpserver_ip) #DNS Domain
ntp = NTP(iface = eth, ntp_address =ntpserver_ip ,utc=9)
cal = ntp.get_time()
print("The date is %s %d/%d/%d" %(days[cal.tm_wday], cal.tm_mday,cal.tm_mon,cal.tm_year))
print("The time is %d:%02d:%02d" %(cal.tm_hour,cal.tm_min,cal.tm_sec))

该任务官方已经提供了示例程序，基于此又重新编写学习一下，但是不知道为什么，跑官方还有自己重新编写的程序都总是报错，提示少传入一个参数，后来又跟论坛上坛友发的贴子实现过程对照了一下，没什么太大出入，copy坛友的程序也跑不下来，不清楚什么原因。

现象如下：

DNS服务器已经根据域名解析出了目标NTP服务器的IP地址，证明网络应该是没问题的。

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。

使用一个SD NAND卡+一个TF卡的转接板，将SD NAND卡的信号引脚引出，用杜邦线通过SPI1接到SD NAND上。

根据坛友分享的帖子，大致了解了FTP的实现流程，分别需要两个socket，一个用来做控制，包括登录认证之类的，另一个用来做文件传输，并且FTP是基于TCP传输层协议的，另外还知道了TFTP是另一种基于UDP传输层协议的应用。

下面根据坛友分享的进行学习

#
# 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 = '192.168.1.20'
sn = '255.255.255.0'
gw = '192.168.1.1'
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)

运行之后，SD NAND挂载正常，但是不知道为什么，在进行socket初始化的时候，又一个提示参数无效的报错，已经成功刷成micropython的固件，并且该导入的库我也导入了。

心得体会

本期是23年的第四期follow me活动，确实对得起这个第四期，个人感觉确实有些难度，刚开始不太懂网络协议栈确实有些吃力，后面跟着坛友们的分享，一步步走下去，虽然坑还是没少趟，但是收获也是有的，2024继续加油！

内容三、可编译下载的代码

followme_4.zip (8.01 KB, 下载次数: 0)