Serial Port Interface
Serial communication is the most common low-level protocol for communicating between two or
more devices. Normally, one device is a computer, while the other device can be a modem, a
printer, Arduino® hardware, another computer, or a scientific instrument such as an oscilloscope
or a function generator. For many serial port applications, you can communicate with your
instrument without detailed knowledge of how the serial port works. Communication through a
serial port is established with a
serialport object, which you create in
the MATLAB® workspace. For information about creating a
object, see Create Serial Port Object.
Before you can write or read data, the
serialport object and the instrument
must have identical communication settings. For information, see Configure Serial Port Communication Settings.
Connect and Configure
|List of serial ports connected to your system (Since R2019b)
|Connection to serial port (Since R2019b)
|Set terminator for ASCII string communication with serial port (Since R2019b)
|Set callback function and trigger condition for communication with serial port device (Since R2019b)
Read and Write
|Read data from serial port (Since R2019b)
|Read line of ASCII string data from serial port (Since R2019b)
|Read one binblock of data from serial port (Since R2019b)
|Write data to serial port (Since R2019b)
|Write line of ASCII data to serial port (Since R2019b)
|Write one binblock of data to serial port (Since R2019b)
|Write command to serial port and read response (Since R2019b)
|Communicate with devices connected to serial port (Since R2021b)
- 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
Troubleshoot the Serial Port interface.
Troubleshoot connecting to a serial port device.
Try these remedies when you receive some data, and you get the warning message: 'serialport' unable to read all requested data.
Try these remedies when you receive no data, and you get the warning message: 'serialport' unable to read any data.