【得捷Follow me第4期】作品提交

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【得捷Follow me第4期】作品提交 [复制链接]

 

【得捷Follow me第4期】项目提交

硬件选用官方推荐的组合，w5500模块加Adafruit LCD显示屏。焊接好排线后，因电路比较简单，用面包板搭接电路。并刷入固件和所用到的库文件，按住boot键，同时将w5500插入U口，拖拽下好的固件至u盘即可，使用adafruit-circuitpython-wiznet_w5500_evb_pico-en_US-8.2.9.uf2。

W5500引脚图

一、入门任务：

使用circuit python进行开发工作，库文件比较全，开发简单。

基础任务1，驱动led闪烁，驱动lcd进行文字和线条测试。按照spi = GP14, MOSI=15，scs =GP13连接lcd和w5500。

写入如下程序

import sys
import time
import board  
import digitalio  
import busio
import adafruit_sharpmemorydisplay

# 打印输入到stdout  
print("start：xxx")

# 初始化LED引脚  
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)

print("Pixel test")

# Clear the display.  Always call show after changing pixels to make the display
# update visible!
display.fill(1)
display.show()

# Set a pixel in the origin 0,0 position.
display.pixel(0, 0, 0)
# Set a pixel in the middle position.
display.pixel(display.width // 2, display.width // 2, 0)
# Set a pixel in the opposite corner position.
display.pixel(display.width - 1, display.height - 1, 0)
display.show()
time.sleep(2)

print("Lines test")
# we'll draw from corner to corner, lets define all the pair coordinates here
corners = (
    (0, 0),
    (0, display.height - 1),
    (display.width - 1, 0),
    (display.width - 1, display.height - 1),
)
display.fill(1)
for corner_from in corners:
    for corner_to in corners:
        display.line(corner_from[0], corner_from[1], corner_to[0], corner_to[1], 0)
display.show()
time.sleep(2)

print("Rectangle test")
display.fill(1)
w_delta = display.width / 10
h_delta = display.height / 10
for i in range(11):
    display.rect(0, 0, int(w_delta * i), int(h_delta * i), 0)
display.show()
time.sleep(2)

print("Text test")
display.fill(1)

display.text(" hello world!", 0, 0, 0)
display.text(" This is the", 0, 8, 0)
display.text(" CircuitPython", 0, 16, 0)
display.text("adafruit library", 0, 24, 0)
display.text(" for the SHARP", 0, 32, 0)
display.text(" Memory Display :) ", 0, 40, 0)
display.show()

# 循环使能LED点亮  
while True:  
    # 点亮LED  
    led.value = True  
    time.sleep(1)  
    led.value = False  
    time.sleep(1)

 

结果如图所示

文字显示

线条显示

 

lcd1

演示视频

 

 

基础任务2：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。

查看本机的IP参数如下

配置w5500网络参数

IP_ADDRESS = (192, 168, 1, 123)

SUBNET_MASK = (255, 255, 255, 0)

GATEWAY_ADDRESS = (192, 168, 1, 1)

DNS_SERVER = (8, 8, 8, 8)

代码如下

import board
import busio
import digitalio
import time
from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K

##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)")

# 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, 123)
SUBNET_MASK = (255, 255, 255, 0)
GATEWAY_ADDRESS = (192, 168, 1, 1)
DNS_SERVER = (8, 8, 8, 8)

led = digitalio.DigitalInOut(board.GP25)
led.direction = digitalio.Direction.OUTPUT

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 with DHCP
# eth = WIZNET5K(spi_bus, cs)
# Initialize ethernet interface without DHCP
eth = WIZNET5K(spi_bus, 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))

while True:
    led.value = not led.value
    time.sleep(1)

print("Done!")

 

在本机上ping开发板如图所示

正常ping通。

使用wireshark进行抓包操作，用规则ip.addr == 192.168.1.123过滤出和W5500的交互数据。

进阶任务1 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.

代码如下

import board
import busio
import digitalio
import time
import array
import struct
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

import adafruit_ntp

days = ("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday")
             
##SPI0
SPI0_SCK = board.GP18
SPI0_TX = board.GP19
SPI0_RX = board.GP16
SPI0_CSn = board.GP17

##reset
W5x00_RSTn = board.GP20

print("Wiznet5k NTP Client (DHCP)")

# Setup your network configuration below
# random MAC, later should change this value on your vendor ID
MY_MAC = (0x00, 0x01, 0x02, 0xFF, 0xFF, 0xFF)
IP_ADDRESS = (192, 168, 1, 123)
SUBNET_MASK = (255, 255, 255, 0)
GATEWAY_ADDRESS = (192, 168, 1, 1)
DNS_SERVER = (8, 8, 8, 8)
port = 5000
ntp_server_port= 123

led = digitalio.DigitalInOut(board.GP25)
led.direction = digitalio.Direction.OUTPUT

ethernetRst = digitalio.DigitalInOut(W5x00_RSTn)
ethernetRst.direction = digitalio.Direction.OUTPUT

# For Adafruit Ethernet FeatherWing
cs = digitalio.DigitalInOut(SPI0_CSn)

# 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, mac=MY_MAC, debug=False)
# Initialize ethernet interface with DHCP
eth = WIZNET5K(spi_bus, cs, is_dhcp=True, mac=MY_MAC, debug=False)
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))

# Initialize a socket for our server
socket.set_interface(eth)
# Set network configuration
eth.ifconfig = (IP_ADDRESS, SUBNET_MASK, GATEWAY_ADDRESS, DNS_SERVER)

ntp = adafruit_ntp.NTP(socket)
print(ntp.datetime)

 

串口输出结果如下

lugl4313820

楼主大佬，看起来，花了不少心思来完成这些任务。辛苦了！