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很高兴能参加得捷电子Follow me第4期活动，这次活动我使用MicroPython进行开发，相关的软件和源代码附在最后。
一、入门任务
1、固件下载
首先去MicroPython官网下载W5500-EVB-Pico开发板固件，固件下载网址如下：
可以看到有很多版本固件可供使用，这里我选择v1.22.1版本。
2、IDE下载安装
W5500-EVB-Pico开发板MicroPython Getting Started网址如下：
根据此开发板Getting Started的推荐，开发IDE选择Thonny，Thonny同时支持Windows、Mac和Linux，因为我用的是Windows系统，所以我下载thonny-4.1.4.exe (21 MB)版本。
Thonny下载网址如下：
Thonny安装完成后会有和技术不相关的东西，可以按照此链接操作对此进行屏蔽，链接如下：
3、固件烧录
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。
4、BLINK
打开Thonny，通过软件右下角可以选择要开发的设备和端口，这里我的是COM8。
Shell窗口会显示固件版本。
在编辑区写入BLINK代码，从原理图能看出LED控制引脚是25号引脚，所以代码如下：
from machine import Pin
import network
import time
led = Pin(25, Pin.OUT)
def main():
while True:
led.value(1)
time.sleep(1)
led.value(0)
time.sleep(1)
if __name__ == "__main__":
main()
运行效果如下：
5、驱动液晶显示器
这是Adafruit Sharp Memory Display Breakout使用说明链接如下：
根据此链接用W5500-EVB-Pico开发板使用CircuitPython一直没有驱动起来此屏幕，报GP10已经使用了的错误，网上找了一圈没有找到解决办法，想到自己手里还有一块Arduino DUE开发板，所以根据屏幕的使用说明用Arduino进行驱动，接线如下：
Microcontroller GND to LCD Gnd
Microcontroller 5V to LCD Vin
Microcontroller D13 to LCD Clk
Microcontroller D11 to LCD DI
Microcontroller D10 to LCD CS
Arduino IDE下载链接如下：
这里根据自己的平台下载相应的版本，这里我下载Windows版
安装DUE开发板包：
安装Sharp Memory Display Library库：
弹出选项选INSTALL ALL：
打开Arduino显示屏对应的显示例程：
编译下载，对应的显示效果如下
/*********************************************************************
This is an example sketch for our Monochrome SHARP Memory Displays
Pick one up today in the adafruit shop!
------> http://www.adafruit.com/products/1393
These displays use SPI to communicate, 3 pins are required to
interface
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, check license.txt for more information
All text above, must be included in any redistribution
*********************************************************************/
#include <Adafruit_GFX.h>
#include <Adafruit_SharpMem.h>
// any pins can be used
#define SHARP_SCK 13
#define SHARP_MOSI 11
#define SHARP_SS 10
// Set the size of the display here, e.g. 144x168!
Adafruit_SharpMem display(SHARP_SCK, SHARP_MOSI, SHARP_SS, 144, 168);
// The currently-available SHARP Memory Display (144x168 pixels)
// requires > 4K of microcontroller RAM; it WILL NOT WORK on Arduino Uno
// or other <4K "classic" devices! The original display (96x96 pixels)
// does work there, but is no longer produced.
#define BLACK 0
#define WHITE 1
int minorHalfSize; // 1/2 of lesser of display width or height
void setup(void)
{
Serial.begin(9600);
Serial.println("Hello!");
// start & clear the display
display.begin();
display.clearDisplay();
// Several shapes are drawn centered on the screen. Calculate 1/2 of
// lesser of display width or height, this is used repeatedly later.
minorHalfSize = min(display.width(), display.height()) / 2;
// draw a single pixel
display.drawPixel(10, 10, BLACK);
display.refresh();
delay(500);
display.clearDisplay();
// draw many lines
testdrawline();
delay(500);
display.clearDisplay();
// draw rectangles
testdrawrect();
delay(500);
display.clearDisplay();
// draw multiple rectangles
testfillrect();
display.refresh();
delay(500);
display.clearDisplay();
// draw a circle, 10 pixel radius
display.fillCircle(display.width()/2, display.height()/2, 10, BLACK);
display.refresh();
delay(500);
display.clearDisplay();
testdrawroundrect();
display.refresh();
delay(500);
display.clearDisplay();
testfillroundrect();
display.refresh();
delay(500);
display.clearDisplay();
testdrawtriangle();
display.refresh();
delay(500);
display.clearDisplay();
testfilltriangle();
display.refresh();
delay(500);
display.clearDisplay();
testdrawchar();
display.refresh();
for(int i=0; i<4; i++) {
display.refresh();
delay(500);
}
}
void loop(void)
{
for(int i=0; i<4; i++) {
display.setRotation(i);
display.clearDisplay();
// text display tests
display.setTextSize(1);
display.setTextColor(BLACK);
display.setCursor(0,0);
display.println("Hello, world!");
display.setTextColor(WHITE, BLACK); // inverted text
display.println(3.141592);
display.setTextSize(2);
display.setTextColor(BLACK);
display.print("0x"); display.println(0xDEADBEEF, HEX);
// Screen must be refreshed at least once per second
for(int j=0; j<4; j++) {
display.refresh();
delay(500); // 1/2 sec delay
} // x4 = 2 second pause between rotations
}
}
///
void testdrawline() {
for (int i=0; i<display.width(); i+=4) {
display.drawLine(0, 0, i, display.height()-1, BLACK);
display.refresh();
}
for (int i=0; i<display.height(); i+=4) {
display.drawLine(0, 0, display.width()-1, i, BLACK);
display.refresh();
}
delay(250);
display.clearDisplay();
for (int i=0; i<display.width(); i+=4) {
display.drawLine(0, display.height()-1, i, 0, BLACK);
display.refresh();
}
for (int i=display.height()-1; i>=0; i-=4) {
display.drawLine(0, display.height()-1, display.width()-1, i, BLACK);
display.refresh();
}
delay(250);
display.clearDisplay();
for (int i=display.width()-1; i>=0; i-=4) {
display.drawLine(display.width()-1, display.height()-1, i, 0, BLACK);
display.refresh();
}
for (int i=display.height()-1; i>=0; i-=4) {
display.drawLine(display.width()-1, display.height()-1, 0, i, BLACK);
display.refresh();
}
delay(250);
display.clearDisplay();
for (int i=0; i<display.height(); i+=4) {
display.drawLine(display.width()-1, 0, 0, i, BLACK);
display.refresh();
}
for (int i=0; i<display.width(); i+=4) {
display.drawLine(display.width()-1, 0, i, display.height()-1, BLACK);
display.refresh();
}
delay(250);
}
void testdrawrect(void) {
for (int i=0; i<minorHalfSize; i+=2) {
display.drawRect(i, i, display.width()-2*i, display.height()-2*i, BLACK);
display.refresh();
}
}
void testfillrect(void) {
uint8_t color = BLACK;
for (int i=0; i<minorHalfSize; i+=3) {
// alternate colors
display.fillRect(i, i, display.width()-i*2, display.height()-i*2, color&1);
display.refresh();
color++;
}
}
void testdrawroundrect(void) {
for (int i=0; i<minorHalfSize/2; i+=2) {
display.drawRoundRect(i, i, display.width()-2*i, display.height()-2*i, minorHalfSize/2, BLACK);
display.refresh();
}
}
void testfillroundrect(void) {
uint8_t color = BLACK;
for (int i=0; i<minorHalfSize/2; i+=2) {
display.fillRoundRect(i, i, display.width()-2*i, display.height()-2*i, minorHalfSize/2, color&1);
display.refresh();
color++;
}
}
void testdrawtriangle(void) {
for (int i=0; i<minorHalfSize; i+=5) {
display.drawTriangle(display.width()/2, display.height()/2-i,
display.width()/2-i, display.height()/2+i,
display.width()/2+i, display.height()/2+i, BLACK);
display.refresh();
}
}
void testfilltriangle(void) {
uint8_t color = BLACK;
for (int i=minorHalfSize; i>0; i-=5) {
display.fillTriangle(display.width()/2 , display.height()/2-i,
display.width()/2-i, display.height()/2+i,
display.width()/2+i, display.height()/2+i, color & 1);
display.refresh();
color++;
}
}
void testdrawchar(void) {
display.setTextSize(1);
display.setTextColor(BLACK);
display.setCursor(0,0);
display.cp437(true);
for (int i=0; i < 256; i++) {
if (i == '\n') continue;
display.write(i);
}
display.refresh();
}
显示效果如下：
Arduino sharpmemtest
二、基础任务一
1、W5500使用
参考W5500-EVB-Pico开发板MicroPython Getting Started例程对W5500初始化（静态IP配置），网址如下：
from machine import Pin,SPI
import network
import time
import uping
led = Pin(25, Pin.OUT)
#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)
nic.ifconfig(('192.168.31.120','255.255.255.0','192.168.31.1','8.8.8.8'))
while not nic.isconnected():
time.sleep(1)
print(nic.regs())
print(nic.ifconfig())
def main():
w5x00_init()
uping.ping('baidu.com')
while True:
led.value(1)
time.sleep(1)
led.value(0)
time.sleep(1)
if __name__ == "__main__":
main()
运行结果如图
使用局域网电脑ping通开发板结果如图：
开发板想要ping通互联网站点，需要添加uping.py文件，此文件下载网址如下：
下载好文件后将文件保存进开发板即可。
W5500 ping通互联网站点（这里选择ping百度）结果如图：
2、Wireshark下载安装使用
下载Wireshark并安装，软件下载网址如下：
根据自己的平台选择相应的版本，这里我用的是Windows x64 Installer版本。
使用Wireshark抓取PC网卡数据，结果如图：
数据太多了，对关心的数据进行筛选，筛选条件为ip.addr==192.168.31.120（开发板IP），结果如图，ping的数据包就比较清晰了。
可以看到，跟开发板相关的报文有8个，4个请求报文和4个应答报文，报文第一项是对整个报文的描述，第二项为报文前14个字节，分别为本机的MAC地址和路由器的MAC地址：
接下来的20个字节为IP报文：
关于IP报文的格式如下：
最后是IP报文的数据段，也就是ICMP报文：
三、基础任务二
1、开发板建立TCPIP服务器，并接收数据
参考W5500-EVB-Pico开发板MicroPython Getting Started例程用开发板创建TCP服务器，用网络调试助手创建TCP客户端连接开发板并发送数据
from usocket import socket
from machine import Pin,SPI
import network
import time
#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(('192.168.31.120','255.255.255.0','192.168.31.1','8.8.8.8'))
#DHCP
#nic.ifconfig('dhcp')
print('IP address :', nic.ifconfig())
while not nic.isconnected():
time.sleep(1)
#print(nic.regs())
def server_loop():
s = socket()
s.bind(('192.168.31.120', 5000)) #Source IP Address
s.listen(5)
print("TEST server")
conn, addr = s.accept()
print("Connect to:", conn, "address:", addr)
print("Loopback server Open!")
while True:
data = conn.recv(2048)
print(data.decode('utf-8'))
if data != 'NULL':
conn.send(data)
def client_loop():
s = socket()
s.connect(('192.168.31.2', 5000)) #Destination IP Address
print("Loopback client Connect!")
while True:
data = s.recv(2048)
print(data.decode('utf-8'))
if data != 'NULL' :
s.send(data)
def main():
w5x00_init()
###TCP SERVER###
while True:
server_loop()
###TCP CLIENT###
#client_loop()
if __name__ == "__main__":
main()
运行结果如下：
2、将接收数据送显示屏模块显示
通过串口将W5500-EVB-Pico和Arduino DUE相连，W5500将要显示的内容通过串口发给DUE，DUE驱动屏幕显示。
W5500-EVB-Pico代码：
from usocket import socket
from machine import Pin,SPI,UART
import network
import time
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(('192.168.31.120','255.255.255.0','192.168.31.1','8.8.8.8'))
#DHCP
#nic.ifconfig('dhcp')
print('IP address :', nic.ifconfig())
while not nic.isconnected():
time.sleep(1)
#print(nic.regs())
def server_loop():
s = socket()
s.bind(('192.168.31.120', 5000)) #Source IP Address
s.listen(5)
print("TEST server")
conn, addr = s.accept()
print("Connect to:", conn, "address:", addr)
print("Loopback server Open!")
while True:
data = conn.recv(2048)
print(data.decode('utf-8'))
if data != 'NULL':
uart.write(data)
conn.send(data)
def client_loop():
s = socket()
s.connect(('192.168.31.2', 5000)) #Destination IP Address
print("Loopback client Connect!")
while True:
data = s.recv(2048)
print(data.decode('utf-8'))
if data != 'NULL' :
s.send(data)
def main():
w5x00_init()
#uart.write('hello-world')
###TCP SERVER###
while True:
server_loop()
###TCP CLIENT###
#client_loop()
if __name__ == "__main__":
main()
Arduino DUE代码：
/*********************************************************************
This is an example sketch for our Monochrome SHARP Memory Displays
Pick one up today in the adafruit shop!
------> http://www.adafruit.com/products/1393
These displays use SPI to communicate, 3 pins are required to
interface
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, check license.txt for more information
All text above, must be included in any redistribution
*********************************************************************/
#include <Adafruit_GFX.h>
#include <Adafruit_SharpMem.h>
// any pins can be used
#define SHARP_SCK 13
#define SHARP_MOSI 11
#define SHARP_SS 10
// Set the size of the display here, e.g. 144x168!
Adafruit_SharpMem display(SHARP_SCK, SHARP_MOSI, SHARP_SS, 144, 168);
// The currently-available SHARP Memory Display (144x168 pixels)
// requires > 4K of microcontroller RAM; it WILL NOT WORK on Arduino Uno
// or other <4K "classic" devices! The original display (96x96 pixels)
// does work there, but is no longer produced.
#define BLACK 0
#define WHITE 1
int minorHalfSize; // 1/2 of lesser of display width or height
String inString[5]="";
int i = 0;
void setup(void)
{
Serial.begin(115200);
// Serial.println("Hello!");
// start & clear the display
display.begin();
display.clearDisplay();
// testdrawchar();
display.refresh();
for(int i=0; i<4; i++) {
display.refresh();
delay(500);
}
}
void loop(void)
{
while(Serial.available()>0)
{
inString[i] += char(Serial.read());
delay(10); // 延时函数用于等待字符完全进入缓冲区，可以尝试没有延时，输出结果会是什么
}
// 检查是否接收到数据，如果接收到数据，则输出该数据
if(inString[i]!="")
{
i++;
if(i == 5)
{
inString[0] = inString[1];
inString[1] = inString[2];
inString[2] = inString[3];
inString[3] = inString[4];
inString[4] = "";
i = 4;
}
display.setRotation(1);
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(BLACK);
for(int y = 0; y < 4; y++)
{
display.setCursor(4,4 + 15 * y);
display.println(inString[y]);
}
display.refresh();
}
}
3、报文抓取
通过Wirshark抓取的数据包如下图，可以看到发送的数据EEworld在抓取的TCP数据包中。
四、进阶任务
进阶任务比较简单，注意最好选国内ntp服务器，比较稳定，运行结果如图：
W5500-EVB-Pico开发板代码如下：
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(('192.168.31.120','255.255.255.0','192.168.31.1','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()
Arduino DUE代码如下：
/*********************************************************************
This is an example sketch for our Monochrome SHARP Memory Displays
Pick one up today in the adafruit shop!
------> http://www.adafruit.com/products/1393
These displays use SPI to communicate, 3 pins are required to
interface
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, check license.txt for more information
All text above, must be included in any redistribution
*********************************************************************/
#include <Adafruit_GFX.h>
#include <Adafruit_SharpMem.h>
// any pins can be used
#define SHARP_SCK 13
#define SHARP_MOSI 11
#define SHARP_SS 10
// Set the size of the display here, e.g. 144x168!
Adafruit_SharpMem display(SHARP_SCK, SHARP_MOSI, SHARP_SS, 144, 168);
// The currently-available SHARP Memory Display (144x168 pixels)
// requires > 4K of microcontroller RAM; it WILL NOT WORK on Arduino Uno
// or other <4K "classic" devices! The original display (96x96 pixels)
// does work there, but is no longer produced.
#define BLACK 0
#define WHITE 1
int minorHalfSize; // 1/2 of lesser of display width or height
String inString ="";
int i = 0;
void setup(void)
{
Serial.begin(115200);
// Serial.println("Hello!");
// start & clear the display
display.begin();
display.clearDisplay();
// testdrawchar();
display.refresh();
for(int i=0; i<4; i++) {
display.refresh();
delay(500);
}
}
void loop(void)
{
while(Serial.available()>0)
{
inString += char(Serial.read());
delay(10); // 延时函数用于等待字符完全进入缓冲区，可以尝试没有延时，输出结果会是什么
}
// 检查是否接收到数据，如果接收到数据，则输出该数据
if(inString!="")
{
display.setRotation(1);
display.clearDisplay();
display.setTextSize(2);
display.setTextColor(BLACK);
display.setCursor(4,4);
display.println(inString);
display.refresh();
inString = "";
}
}
Task_A
四、终极任务二
1、驱动SD卡
首先下载sd卡类，下载网址如下：
将下载的库文件内容复制到Thonny，再存到开发板。
# Filename: tfcard_test.py
import uos # os/uos
import machine
import sdcard
from machine import SPI, Pin
spi = SPI(1, sck=Pin(10), mosi=Pin(11), miso=Pin(12))
cs = Pin(13)
sd = sdcard.SDCard(spi, cs)
# 挂载文件到sd
uos.mount(sd,"/sd")
# 列出MicroSD/TF卡中的目录文件
print(uos.listdir('/sd'))
# 写文件测试
f = open('/sd/test.txt','w',encoding='utf-8')
f.write('MicroSD/TF存储卡访问测试！')
f.close()
# 读文件测试
f = open('/sd/test.txt','r')
print(f.read())
f.close()
运行结果如下：
可以看到开发板挂载了sd卡，并且有了test.txt文件
2、实现简易FTP服务
参考网上的使用MicroPython实现ftp的例子，参考网址如下：
由于参考程序是使用的ESP32来实现的，需要对程序进行一定的修改，主要修改网络初始化，修改完成后运行报超时
最后发现是原例程第186行需要修改addr获取方式，改后程序运行正常，ftp文件服务器也能正常上传和下载文件。
from usocket import socket
from machine import Pin,SPI
import network
import time
import socket
import uos
import gc
import sdcard
from time import localtime
spi = SPI(1, sck=Pin(10), mosi=Pin(11), miso=Pin(12))
cs = Pin(13)
sd = sdcard.SDCard(spi, cs)
# 挂载文件到sd
uos.mount(sd,"/sd")
# 列出MicroSD/TF卡中的目录文件
print(uos.listdir('/sd'))
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(('172.22.51.220','255.255.255.0','172.22.51.1','8.8.8.8'))
print('IP address :', nic.ifconfig())
while not nic.isconnected():
time.sleep(1)
#print(nic.regs())
print(nic.ifconfig())
#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(('172.22.51.220','255.255.255.0','172.22.51.1','8.8.8.8'))
print('IP address :', nic.ifconfig())
while not nic.isconnected():
time.sleep(1)
#print(nic.regs())
print(nic.ifconfig())
return nic
month_name = ["", "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
def send_list_data(path, dataclient, full):
try: # whether path is a directory name
for fname in uos.listdir(path):
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 uos.listdir(path):
if fncmp(fname, pattern) == True:
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]
tm = localtime(stat[7])
if tm[0] != localtime()[0]:
description = "{} 1 owner group {:>10} {} {:2} {:>5} {}\r\n".format(
file_permissions, file_size, month_name[tm[1]], tm[2], tm[0], fname)
else:
description = "{} 1 owner group {:>10} {} {:2} {:02}:{:02} {}\r\n".format(
file_permissions, file_size, month_name[tm[1]], tm[2], tm[3], tm[4], fname)
else:
description = fname + "\r\n"
return description
def send_file_data(path, dataclient):
with open(path, "r") as file:
chunk = file.read(512)
while len(chunk) > 0:
dataclient.sendall(chunk)
chunk = file.read(512)
def save_file_data(path, dataclient, mode):
with open(path, mode) as file:
chunk = dataclient.read(512)
while len(chunk) > 0:
file.write(chunk)
chunk = dataclient.read(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:]) == True:
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():
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", 21)[0][4])
datasocket.bind(socket.getaddrinfo("0.0.0.0", DATA_PORT)[0][4])
ftpsocket.listen(1)
datasocket.listen(1)
datasocket.settimeout(10)
msg_250_OK = '250 OK\r\n'
msg_550_fail = '550 Failed\r\n'
try:
dataclient = None
fromname = None
while True:
cl, remote_addr = ftpsocket.accept()
cl.settimeout(300)
cwd = '/'
try:
# print("FTP connection from:", remote_addr)
cl.sendall("220 Hello, this is the ESP8266.\r\n")
while True:
gc.collect()
data = cl.readline().decode("utf-8").rstrip("\r\n")
if len(data) <= 0:
print("Client disappeared")
break
command = data.split(" ")[0].upper()
payload = data[len(command):].lstrip()
path = get_absolute_path(cwd, payload)
print("Command={}, Payload={}, Path={}".format(command, payload, path))
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":
cl.sendall('257 "{}"\r\n'.format(cwd))
elif command == "CWD":
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')
break
elif command == "PASV":
addr = nic.ifconfig()[0]
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)
elif command == "LIST" or command == "NLST":
if not payload.startswith("-"):
place = path
else:
place = cwd
try:
send_list_data(place, dataclient, command == "LIST" or payload == "-l")
cl.sendall("150 Here comes the directory listing.\r\n")
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:
send_file_data(path, dataclient)
cl.sendall("150 Opening data connection.\r\n")
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, "w")
cl.sendall("226 Transfer complete.\r\n")
except:
cl.sendall(msg_550_fail)
if dataclient is not None:
dataclient.close()
dataclient = None
elif command == "APPE":
try:
cl.sendall("150 Ok to send data.\r\n")
save_file_data(path, dataclient, "a")
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":
try:
uos.rmdir(path)
cl.sendall(msg_250_OK)
except:
cl.sendall(msg_550_fail)
elif command == "MKD":
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
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
finally:
datasocket.close()
ftpsocket.close()
if dataclient is not None:
dataclient.close()
def main():
#w5x00_init()
ftpserver() #直接跑这个就成功建立服务器了
if __name__ == "__main__":
main()
五、可编译下载的代码
六、用到的相关库和固件
八、心得体会
感谢EEWorld和得捷举办这次活动，让我们有机会感受到RP2040和W5500组合起来能产生多大的魅力，但也在动手过程中发现MicroPython如果遇到某些问题很难在很快在网上找到答案，希望大家以后能一起壮大MicroPython生态。
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