putty unable to open serial port windows 7

Launch and Configure the Terminal Emulator. Note: If you use the Micro-USB cable, we recommend “ Tera Term”, which you can download and install from the official website. Go to the official website to download the installer and follow the prompts to install the terminal emulator. If you still cannot enter the BootUtil after several attempts, you may get a USB-to-RS232 cable.įor Windows computers, you need to install a terminal emulator, such as Putty, Tera Term. We recommend an RJ45 Console cable or USB-to-RS232 cable, as it might be more difficult to enter the BootUtil menu with a Micro-USB cable. Note: If you need to enter the BootUtil menu to reset the switch or recover the password, please refer to FAQ 3146. Then for Windows computers, click here to download and install the TP-Link USB Console Driver then continue. You can also choose a Micro-USB cable that supports data transfer to connect your computer to the switch. You need to install the RS232 driver for the cable, which is provided by your cable vendor. If you only have USB ports on your computer, you can get a USB-to-RS232 cable. If your computer has a serial port (COM), connect it to the console port (RJ45) of the switch, with the RJ45 console cable. I would be glad however to learn more on this topic and would be greatful to learn why COM3 is not giving the same positive response.You can use the console cable to connect your PC to the console port of the TP-Link JetStream managed Switch and then manage the switch with the CLI.įollow the steps below to manage the switch via the console port: This worked for me without any problem up to now. Unplug the USB from the PC, re-plug it in and check that the Device Manager is indicating the correct COM port.

To my belief this setting in ‘platformio.ini’ is not a requirement, though it does noet hurt

In “platformio.ini” add a line 'upload_port = COMx (where x was 17 in my case).

Click “OK” to close “Advanced Settings” and 2nd time 'OK to close “Properties”.

In the “Advanced Settings for COMx”, select a COM port > 10, whioch is free (in my case I selected arbitrarily for COM17).

go to “Properties” - “Port Settings” - select “Advanced”.

In device Manager, under “Ports (COM & LPT)”, right click on the Silicon Labs one.

Hard to find solutions on the internet, though I managed to solve it as follows: The user cannot identify these port reservations (I would appreciate if someone can confirm this). It seems as if PlatformIO is having some kind of control over some (lower numbered) COM ports, which seem virtually free, but are in fact not really free.

Sometimes it loads, most of the times not … very frustrating.

Had a similar problem, but then with COM3.

Putty unable to open serial port windows 7