can't sent AT command, no serial port has been detected

[sabrine]

Hello,

I am getting starting with mdot developement, following this tutorial:

https://developer.mbed.org/teams/MultiTech/code/mDot_AT_firmware/?platform=MTS-mDot-F411

the problem is that On TeraTerm I can’t see the new serial port, is their a driver that I have to install? I am using windows

Note: I installed “stlink” and I can see the virtual serial port but not the real serial port

[Mike Fiore]

Hi Sabrine,
Two things:

1) The AT firmware uses the external serial port on the UDK2 for AT commands, not the virtual port coming over USB. You’ll need either a serial port on your PC or a USB-to-Serial adapter to connect your PC to the external port.

2) To use the virtual port over USB with a windows PC, you need to install an additional driver first. See this mbed page for more information.

https://developer.mbed.org/handbook/SerialPC

Cheers,
Mike

[sabrine]

Thanks for your reply 🙂
I am actually using an USB to serial cable but still the port is not detected 🙁

[Mike Fiore]

Does you USB-to-Serial cable require any additional drivers to be installed?

You could take a look at your device manager in Windows and see if there are any unidentified USB devices or COM ports, etc.

[sabrine]

Exactly it was not identified in the USB devices manager and I had to update its driver. Thanks!

[Mike Fiore]

Glad that worked out! Let us know if you have any other questions!

Cheers,
Mike

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