Wiznet makers

Source Code Explanation
Imports:

• socket, ussl: Used for establishing TCP connections and wrapping them in SSL/TLS for secure HTTPS communication.
• network: Handles network interface configuration.
• time: Provides timing functionalities for delays or timeouts.
• w5x00_init: Initializes the WIZnet W5x00 Ethernet module, setting up the network hardware.

Connection Settings:

• host: Defines the target HTTPS server domain (e.g., “api.github.com” or similar).
• port: Set to 443, the standard port for HTTPS communication.
• The server’s IP address is resolved using socket.getaddrinfo() based on the provided host and port.

https_client():

• Initializes the Ethernet interface by calling w5x00_init(), which configures the WIZnet module and retrieves the board’s IP address.
• Resolves the server’s address via socket.getaddrinfo() to obtain the connection endpoint.
• Creates a TCP socket and connects to the resolved server address.
• Wraps the connected socket with SSL using ussl.wrap_socket(), establishing a secure (encrypted) channel.
• Constructs an HTTP GET request (including the appropriate Host header) targeting the root path (“/“).
• Sends the HTTP request over the SSL-wrapped socket.
• Receives the response (likely the HTTP response headers and body) from the HTTPS server and prints it.
• Closes the socket to clean up the connection.

Execution Flow:

• The script runs as the main module.
• Upon execution, the https_client() function is invoked, performing the following steps:
  1. Ethernet initialization via w5x00_init().
  2. Server address resolution and secure TCP connection establishment.
  3. Sending of an HTTP GET request and receiving the server’s response.
  4. Closing of the connection post data exchange.

▶ How to Run
Prepare Hardware:

• Connect the WIZnet W5x00 Ethernet module to the MicroPython board.
• Ensure the board is connected to a network (via Ethernet).

Deploy Code:

• Upload HTTPS_Client.py to the MicroPython board.
• Execute the script via the REPL or configure it to run on boot.

Execution Result:

• On Success:
  • The board initializes its Ethernet interface.
  • Establishes a secure connection to the HTTPS server.
  • Sends an HTTP GET request and prints the received HTTP response.
• On Failure:
  • Error messages (e.g., network connection issues or SSL handshake failures) are displayed.