I use CP2102 USB to TTL chip. For testing, I directly loop back TX and RX.
Connect the serial port to comet's USB2.0 interface
Enter comet's terminal and check the newly added serial port device, which is usually ttyUSBX
Use minicom -s command to make necessary configurations. Usually, you need to modify the device path and flow control configuration. You can find the use and configuration of minicom here.
After the configuration is completed, you can start using the serial port device. Since my TX and RX are looped, the input content will be directly output.
