Use Python to access serial ports

You can use the Python serial module to access serial ports on your TX64 device that are configured to be in Application mode. For example, you can configure USB ports to function serial ports and interact programmatically with those ports. See Configure Application mode for a serial port for information about configuring a serial port in Application mode, and see Add a USB serial port for information about configuring USB ports on the device to function as serial ports.

To use Python to access serial ports:

1. Select a device in Remote Manager that is configured to allow shell access to the admin user, and click Actions > Open Console. Alternatively, log into the TX64 local command line as a user with shell access.

   Depending on your device configuration, you may be presented with an Access selection menu. Type shell to access the device shell.

2. Determine the path to the serial port:

   # ls /dev/serial/
   by-id   by-path   by-usb   port1   USB_port1   USB_port2
   # 

3. At the shell prompt, use the python command with no parameters to enter an interactive Python session:

   # python
   Python 3.10.1 (main, Mar 30 2023, 23:47:13) [GCC 11.2.0] on linux
   Type "help", "copyright", "credits" or "license" for more information.
   >>>
   

4. Import the serial module:

   >>> import serial
   >>>

5. You can now perform operations on the serial port. For example, to write a message to the serial port:

   >>> s = serial.Serial("/dev/serial/USB_port1", 115200)
   >>> s.write(b"Hello from USB serial port")
   26
   >>>

6. Use Ctrl-D to exit the Python session. You can also exit the session using exit() or quit().