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Unable to send USB input to serial connected equipment using Minicom

I am trying to connect to my hardware board from an installed Ubuntu PC. I used a USB cable for the serial interface, and the serial cable is connected to the hardware and the USB is connected to the USB port of my desktop. I used minicom and it works well, as I can see the output of my equipment. But the problem is that I can’t write anything. It does not recognize keyboard input. Without this, it is completely useless. Can anyone help me on this.

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ubuntu usbserial
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2 answers

Knowing that the device will help answer this question.

If you see a good output from your device, then most likely, in terms of software, everything will be fine. This is good news. The problem may be:

  • The device does not respond to your input. Does it respond to your input in any other way? You can enable the local echo function in minicom software if you want to see your input until the device supports echo.
  • The device is malfunctioning. This could be a hardware problem, for example, poor contact or a firmware problem with the device.

You can also try alternative minicomputer software. This will not solve the problem, but may help you find the cause easier. One such GUI program is gtkterm. Install and use like this. All parameters and configuration are available through the menu:

sudo apt-get install gtkterm gtkterm
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I experienced something similar, and it ended up being a problem with the card I used. After installing another version of the driver, it worked without any problems.

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