Serial Communication for Windows

  1. Download and install the FTDI drivers ( for use on the host computer.
  1. Plug the Micro USB cable (Type B) into a regular Type A USB port on your host computer.

  2. Plug the other end of the cable in to the Micro USB Type B port on the development platform.

  3. On your host computer, open Device Manager. Under the Ports (COM & LPT) category, look for the USB Serial Port entry and make a note of the COM# displayed in parenthesis (in this case, COM3; the COM# on your system may vary).



If you're trying to open serial communication with your development platform, you may find that when you open Device Manager, the serial device has no driver. The Device Manager may show an error or an unknown driver message, along with a yellow warning triangle icon. If this happens:

  1. On your host computer, download the CDM v2.12.18 WHQL file from the FTDI website. Unzip the file.
  2. Right-click on the broken serial device entry in the Device Manager and select Update driver software.
  3. Click Browse my computer and select the folder you extracted the files to. The driver should automatically be found.
  1. Install a terminal application (PuTTY for example)

a.  Download the PuTTY terminal emulator:

b.  Double-click the putty.exe file you downloaded to run it.

c.  Configure the PuTTY menu as follows:

i.  Under Connection type, select Serial.

ii.  In the Serial line field, enter the COM# for your development platform, which you noted in the steps above.

III.  In the Speed field, type 115200.


d.  In the Category pane on the left, select Terminal > Keyboard.

i.  Under The Backspace key, select Control-H.

ii. Under The Function keys and keypad, select SCO.

  1. Click Open. A blank PuTTY window opens, ready to display the output from your development platform once it's booted up. Maximize the PuTTY window.


IMPORTANT: To save these settings for later use, in the Category pane, choose Session. Under Saved Sessions, type a name for your settings and click Save.

In the future, when you open PuTTY and want to reconnect to your development platform, you can simply Load your saved settings and Open a connection to your development platform, without needing to select all of the connection options again!
Para obter informações mais completas sobre otimizações do compilador, consulte nosso aviso de otimização.