1. Putty Cannot Open Serial Port Betaflight
2. Putty Cannot Open Serial Port
3. Putty Can T Open Serial Port
4. Open Serial Port Putty

I'm trying to establish a serial connection to a peripheral from my PC's RS-232 port. Pretty simple stuff, and I've had not trouble doing it with countless peripherals before. And yet when I configure PuTTY to the right baud rate, stop bits, etc. I'll type in '*IDN?', press enter, and the unit won't reply. After going over my settings over and over again, I decided to try another terminal program, Termite. This time it worked like a charm. What puzzles me, and what I'm trying to figure out by posting this question, is why Termite would work when PuTTY did not despite the fact that they both have the same settings.

1. Putty is disconnected inbetween using the core in listening mode and the core being reset, if that’s what you mean. I have also had the similar problem when trying to use the IDE but when the core isn’t in listening mode, the IDE seems to not acknowledge the core is connected.
2. Sep 12, 2015  In this video We'll learn how to use/configure PuTTy to read serial data sent by LPC1768 Cortex-M3 Microcontroller. This would be step-by-step guide to read serial output from UART of LPC1768.
3. PuTTY on Linux throws this error if the user running it does not have permissions to access the serial port device file This is because the device file of the serial port does not have permissions to allow to currently logged in user to “read” or “write” to the serial device. The following command will confirm that.

This question does not appear to be about computer software or computer hardware within the scope defined in the help center. If this question can be reworded to fit the rules in the help center, please edit the question. Support Forum » Putty Won't Open Serial Port on Windows 7. 168, It absolutely will not open again. Yes, I set Serial 115200, one, none, none and used the same. Comcast.net, so realistically you do not use the modem. Disable the modem in BIOS setup or Device Manager. Try COM1 again. Solution 2: With the serial port in BIOS set to Auto, open Device Manager, select the Serial Port COM1, Properties, Port Settings tab, Advanced Button, chage the COM port number to COM2, reboot.

PuTTY:http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html

Termite:http://www.compuphase.com/software_termite.htm

EDIT: I now tried Tera Term as well, and it works. So PuTTY is the odd one out.

Putty Cannot Open Serial Port Betaflight

1 Answer

Had similar problem,

I had to check in the settings under Terminal => local echo , force On

A bit too late but hopefully will help someone else.

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OK, Details;

I'm trying to communicate to the console ports on several Cisco switches and routers. I my computers do not have a 9pin Dconnector that will connect to a standard Cisco console cable, and the Cisco devices do not have USB.

Therefore, I purchased a Belkin USB to DB9 converter for serial connections. It's nice because I can see LEDs light up on it when it transfers data (link, TX, RX).

This has worked for a while. I'm using a home built computer using an AMD Athlon II comptuer with four USB ports comming off the motherboard. It's running XP OS.

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Putty Cannot Open Serial Port

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Processor

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This has been working for a year or so, and right in the middle of running it just stopped working and was hung. After that, when I use the Device Manager to list the 'Ports (COM & LPT)' it now only shows COM1 and LPT1.

I get the above error message when ever I use 'Putty' software to do the serial terminal emulation.

Not sure if it was my Belkin device, Computer, or OS.

1) So I first tried rebooting the computer, with no success.

2) I tried connecting to another router with no change.

3) Next rebooted the orginal router, no change.

4) Rebooted the laptop, no change.

Putty Can T Open Serial Port

I searched the internet for this, and the best advice was to manually install the com port. I tried this, but it instead installed COM4 and COM5. I tried anyway, but uninstalled when done.

How does the COM3 port get built? Should it always show available, or does it build the interface when a device is plugged in?

Well, I haven't messed with it over the weekend, tried again today, and now it's working when I plugged in the belkin USB to Serial DB9 connector. It recognized the device and gave a 'bong' and it appeared. Therefore I susspect that it is built when the device is plugged in, and torn down when it is disconnected. Not sure why it's now working..but now i don't trust when it may go down of back up. I'm sure there is a logical explaination, but not any help from the MS OS...as usual.

Open Serial Port Putty

Maybe the Belkin device is flakey, but unlikely due to the number of times I unplugged and replugged...not sure.

I then grabbed a Laptop running Windows 7 and connected to it's USB port, and running putty software, and it started working.

Then, in about 5 minutes, it hung up as well, and I could not see the COM3 Port.