Silicon Labs CP210x Serial Communications Guide

Introduction to Serial Communication with CP210x Devices

This application note, AN197, provides developers with essential information for integrating Silicon Labs' CP210x USB to UART Bridge Controllers into their products. It details how to establish serial communications and retrieve COM port numbers for devices such as the CP2101, CP2102, CP2102N, CP2103, CP2104, CP2105, and CP2108.

The guide includes practical code samples for Windows 10 and later, covering the critical operations of opening, configuring, reading from, and writing to COM ports. Key topics include:

• Opening and preparing COM ports for data transmission.
• Closing COM ports and restoring their initial state.
• Demonstrating serial functions with sample programs.
• Application design considerations for robust serial communication.

This document is a valuable resource for engineers and developers working with embedded systems and serial interfaces.

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