A UART provides a widely adopted and cheap method to realize full-duplex or half-duplex data exchange among different devices. The ESP32 chip has 3 UART controllers (also referred to as port), each featuring an identical set of registers to simplify programming and for more flexibility.

ESP32 芯片有 3 个 UART 控制器（也称为端口），每个控制器都有一组相同的寄存器以简化编程并提高灵活性。 每个 UART 控制器可以独立配置波特率、数据位长度、位顺序、停止位位数、奇偶校验位等参数。

A UART provides a widely adopted and cheap method to realize full-duplex or half-duplex data exchange among different devices. The ESP32 chip has three UART controllers (UART0, UART1, and UART2) that feature an identical set of registers for ease of programming and flexibility.

The following overview describes functions and data types used to establish communication between ESP32 and some other UART device. The overview reflects a typical workflow when programming ESP32’s UART driver and is broken down into the following sections:

A UART provides a widely adopted and cheap method to realize full-duplex or half-duplex data exchange among different devices. The ESP32 chip has three UART controllers (UART0, UART1, and UART2) that feature an identical set of registers for ease of programming and flexibility.

This section provides guidance on how to establish a serial connection between ESP32 and PC using USB-to-UART Bridge, either installed on the development board or external.

All UART controllers integrated in the ESP32 feature an identical set of registers for ease of programming and flexibility. In this documentation, these controllers are referred to as UART0, UART1, and UART2.

连接 ESP32-C6 和 PC 用 USB 线将 ESP32-C6 开发板连接到 PC。 如果设备驱动程序没有自动安装，请先确认 ESP32-C6 开发板上的 USB 至 UART 桥（或外部转 UART 适配器）型号，然后在网上搜索驱动程序，并进行手动安装。 以下是乐鑫 ESP32-C6 开发板驱动程序的链接：

若 ESP32 的 UART 不够用，或者硬件设计已经不方便更改的情况下，如果您要使用 UART0 作为普通的通信串口，请参考以下建议：

A UART provides a widely adopted and cheap method to realize full-duplex or half-duplex data exchange among different devices. The ESP32 chip has three UART controllers (UART0, UART1, and UART2), each featuring an identical set of registers …