树莓派Pico-Raspberry Pi Pico 有线连接上网

树莓派Pi Pico有线连接

使用器件

• 树莓派Pi Pico
• W5500模块
  

导入CircuitPython库

• 所需库文件：

  W5500 adafruit_wiznet5k

  adafruit_requests.mpy

• 库网址：

  • https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k
  • https://github.com/adafruit/Adafruit_CircuitPython_Requests

  点击右侧Releases，下载最新包-adafruit-circuitpython-wiznet5k-7.x-mpy-1.11.1.zip、adafruit-circuitpython-requests-7.x-mpy-1.10.2.zip。
  
  

• 解压后分别打开，将lib文件夹下的所有文件复制到CIRCUITPY驱动器下lib文件夹中。

接线：

Pi Pico	W5500
GP10	SCLK
GP11	MOSI
GP12	MISO
GP13	SCS
GP15	RST
GND	GND
3.3V	3.3V

代码测试：

• Ping-test

  import board
  import busio
  import digitalio
  import time
  from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
  
  SPI1_SCK = board.GP10
  SPI1_TX = board.GP11
  SPI1_RX = board.GP12
  SPI1_CSn = board.GP13
  W5500_RSTn = board.GP15
  
  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, 3, 111)
  SUBNET_MASK = (255, 255, 255, 0)
  GATEWAY_ADDRESS = (192, 168, 3, 1)
  DNS_SERVER = (8, 8, 8, 8)
  
  led = digitalio.DigitalInOut(board.GP25)
  led.direction = digitalio.Direction.OUTPUT
  
  ethernetRst = digitalio.DigitalInOut(W5500_RSTn)
  ethernetRst.direction = digitalio.Direction.OUTPUT
  
  # For Adafruit Ethernet FeatherWing
  cs = digitalio.DigitalInOut(SPI1_CSn)
  # For Particle Ethernet FeatherWing
  # cs = digitalio.DigitalInOut(board.D5)
  spi_bus = busio.SPI(SPI1_SCK, MOSI=SPI1_TX, MISO=SPI1_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!")
  

• socket代码

  import board
  import busio
  import digitalio
  import time
  from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
  import adafruit_wiznet5k.adafruit_wiznet5k_socket as socket
  
  SPI1_SCK = board.GP10
  SPI1_TX = board.GP11
  SPI1_RX = board.GP12
  SPI1_CSn = board.GP13
  W5500_RSTn = board.GP15
  
  print("Wiznet5k SimpleServer Test (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, 3, 111)
  SUBNET_MASK = (255, 255, 255, 0)
  GATEWAY_ADDRESS = (192, 168, 3, 1)
  DNS_SERVER = (8, 8, 8, 8)
  
  led = digitalio.DigitalInOut(board.GP25)
  led.direction = digitalio.Direction.OUTPUT
  
  ethernetRst = digitalio.DigitalInOut(W5500_RSTn)
  ethernetRst.direction = digitalio.Direction.OUTPUT
  
  # For Adafruit Ethernet FeatherWing
  cs = digitalio.DigitalInOut(SPI1_CSn)
  # For Particle Ethernet FeatherWing
  # cs = digitalio.DigitalInOut(board.D5)
  
  spi_bus = busio.SPI(SPI1_SCK, MOSI=SPI1_TX, MISO=SPI1_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=True)
  # # Set network configuration
  # eth.ifconfig = (IP_ADDRESS, SUBNET_MASK, GATEWAY_ADDRESS, DNS_SERVER)
  
  # Initialize ethernet interface with DHCP
  eth = WIZNET5K(spi_bus, cs, is_dhcp=True, mac=MY_MAC, debug=True)
  
  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)
  server = socket.socket()  # Allocate socket for the server
  server_ip = None  # IP address of server
  server_port = 50007  # Port to listen on
  server.bind((server_ip, server_port))  # Bind to IP and Port
  server.listen()  # Begin listening for incoming clients
  
  conn, addr = server.accept()  # Wait for a connection from a client.
  print("socket connected")
  while True:
      # Maintain DHCP lease
      eth.maintain_dhcp_lease()
  
      led.value = not led.value
      time.sleep(1)
      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)
                  conn.send(data)  # Echo message back to client
                  break
  
  print("Done!")
  

• 代码参考：https://github.com/bjnhur/pico-W5500