TTL Converter Terminal Connection

This section shows you how to connect your Development Kit with a host computer to login to a terminal.

Wiring

If you are using the USB-to-TTL cable shipped with our modules, the Black wire always goes to GND or Number 1 Pin. The other side of course is plugged into your host computer.

Debug Connector Example

Accessing

Linux

Note

This section was tested on Ubuntu 16.04.

  1. Install minicom:

sudo apt install minicom

  1. Power on the board.

  2. Use the TTL to USB Serial Converter cable to connect your computer with the board.

  3. Get the right ttyUSB instance:

ls /dev/ttyUSB*

/dev/ttyUSB0

  1. Connect minicom to the /dev/ttyUSB0 device:

minicom -D /dev/ttyUSB0 -t linux

The necessary communication parameters are decribed in Terminal Settings

Tip

You should consider using minicom with logfiles. They can be enabled with the -C option. An example would be: minicom -D /dev/ttyUSB0 -t linux -C ${HOME}/log/minicom/minicom_usb0_$(date +%Y-%m-%d).log.

Note

By default you can quit minicom CTRL + A and then Q.

Note

If minicom does not show any target output following connection, reset the board/MCU.

Windows

You will need a host computer with a terminal program, e.g. PuTTY.

The following example is for a Windows 10 host system.

  1. Power on the board.

  2. Use the TTL to USB Serial Converter cable to connect your computer with the board.

  3. Check the Device Manager to see as which COM the USB connected.

  4. For example, it would come up as COM9, configure PuTTY as follows:

PuTTY configuration

  1. Hit “Open” and you should get terminal access to your board. Sometimes you have to hit the [Enter] key before you get an output.

Hint

If your computer is not recognizing the TTL to USB Serial Converter cable you might try installing this driver: http://www.ftdichip.com/Drivers/CDM/CDM21228_Setup.zip