串行端口接口

使用串行端口接口进行通信

串行通信是两个或多个设备之间通信的最常见的低级协议。通常，一个设备是计算机，而另一个设备可以是调制解调器、打印机、Arduino^® 硬件、另一台计算机或科学仪器（例如示波器或函数发生器）。对于许多串行端口应用程序，您无需详细了解串行端口的工作原理即可与仪器进行通信。通过串行端口进行的通信是使用您在 MATLAB^® 工作区中创建的 serialport 对象建立的。有关创建 serialport 对象的信息，请参阅 Create Serial Port Object。

在写入或读取数据之前，serialport 对象和仪器必须具有相同的通信设置。有关信息，请参阅 Configure Serial Port Communication Settings。

函数

全部展开

连接和配置

`serialportlist`	List of serial ports connected to your system
`serialport`	Connection to serial port
`configureTerminator`	Set terminator for ASCII string communication with serial port
`configureCallback`	Set callback function and trigger condition for communication with serial port device
`serialportfind`	Find serial port connections (自 R2024a 起)

读取和写入

`read`	Read data from serial port
`readline`	Read line of ASCII string data from serial port
`readbinblock`	Read one binblock of data from serial port
`write`	Write data to serial port
`writeline`	Write line of ASCII data to serial port
`writebinblock`	Write one binblock of data to serial port
`writeread`	Write command to serial port and read response

控制引脚和内存

`serialbreak`	Send break to device connected to serial port
`flush`	Clear serial port device buffers
`getpinstatus`	Get serial pin status
`setRTS`	Set serial RTS pin
`setDTR`	Set serial DTR pin

App

串行通信管理器

Communicate with devices connected to serial port (自 R2021b 起)

模块

Serial Configuration	Configure parameters for serial port
Serial Receive	Receive binary data over serial port
Serial Send	Send binary data over serial port

主题

Serial Port Overview
Basic features of serial port communication.
Create Serial Port Object
Establish a connection between MATLAB and the device using the serial port.
Configure Serial Port Communication Settings
Set properties associated with the device baud rate and serial data format.
Write and Read Serial Port Data
Write and read both text and binary data with a serial port device.
Use Callbacks for Serial Port Communication
Enhance instrument communication by executing a callback function when a specified event occurs on the device.
Use Serial Port Control Pins
Signal the presence of connected devices and control the flow of data using control pins.
Transition Your Code to serialport Interface
Connect to serial port devices using serialport instead of serial.