Max Päsler
asked on
Putty Serial COM connection does not work
Hello guys!
First of all, i want you to know that i am german, so please excuse some of my grammar mistakes.
So my problem is that i am currently working on a project and therefore have to use Putty to connect my router with my computer. All settings should be right, but to be sure i will write them down:
serial line: COM3
speed: 115200 bauds
connection type: serial
data bits: 8
stop bits: 1
parity: none
flow control: none
So at first these settings worked fine for me, but all of a sudden the terminal just stayed blank. It didnt react to anything i typed in (mainly because i couldn't even type something in). I checked the connection to the FTDI adapter i am using, and as i can tell, everything should be fine. If i press keys on my keyboard, the little lamp is flashing, so that means the connection from the FTDI to my computer is alright. It just seems that the terminal program is not getting any information from my router.
I really hope someone can help me with this problem. I am working on an important project to hack my current internet router, and therefore necessarily have to use putty (Windows etc.)
Thanking you in anticipation,
Max
First of all, i want you to know that i am german, so please excuse some of my grammar mistakes.
So my problem is that i am currently working on a project and therefore have to use Putty to connect my router with my computer. All settings should be right, but to be sure i will write them down:
serial line: COM3
speed: 115200 bauds
connection type: serial
data bits: 8
stop bits: 1
parity: none
flow control: none
So at first these settings worked fine for me, but all of a sudden the terminal just stayed blank. It didnt react to anything i typed in (mainly because i couldn't even type something in). I checked the connection to the FTDI adapter i am using, and as i can tell, everything should be fine. If i press keys on my keyboard, the little lamp is flashing, so that means the connection from the FTDI to my computer is alright. It just seems that the terminal program is not getting any information from my router.
I really hope someone can help me with this problem. I am working on an important project to hack my current internet router, and therefore necessarily have to use putty (Windows etc.)
Thanking you in anticipation,
Max
> 115200
If you reconnect at 9600 baud do you get anything?
P
If you reconnect at 9600 baud do you get anything?
P
Ken beat me to it :)
ASKER
The rooter is a telekom speedport hybrid, and i am connecting via USB-Serial Adapter, an FTDI232 to be precise.
Edit: changing to 9600 doesnt help
sadf.PNG
Edit: changing to 9600 doesnt help
sadf.PNG
Ok not familiar with that router model. I do know that USB-Serial adapters fail ALL THE FREAKING time ;) Do you have another device that you can test your USB serial adapter with putty on to verify that it works.
ASKER
As i said this Router is not meant to be connected via serial COM this way. I have talked with a few experts in a german forum about this. I want to 'hack' the router, and therefore i needed to solder the connection, but that is alright. The problem must be something else...
As i said this Router is not meant to be connected via serial COM this way.
JTAG headers are generally 3.3 volts, not 5 volts. However, the majority of USB-to-serial converters produce 5 volts at the serial end. It may be that the board's serial drivers have been destroyed by overvoltage.
JTAG headers are generally 3.3 volts, not 5 volts. However, the majority of USB-to-serial converters produce 5 volts at the serial end. It may be that the board's serial drivers have been destroyed by overvoltage.
ASKER
The jumper on the FTDI adapter is set to 3.3 volts. But as i said at first it worked fine. The routers serial ports shouldn't be damaged. So you think the problem is the converter itself or the cable?
I can't speak for the voltage stuff.. but I would test your USB-Serial adapter and cable with another device to ensure your putty/serial connection works. I do know that some equipment does not have the same pinout on their console ports though. For instance Coriant equipment does not have the same pinout as what Cisco uses and so when I need to console into Coriant I have to make a pigtail cable to convert the wires. So you could have an issue like that as well.
ASKER
I tested the cable and the adapter. They both work perfectly.
So it could be the console port on that device is bad or the pinout is not correct. Or the the router has the port disabled for some reason.
This question needs an answer!
Become an EE member today
7 DAY FREE TRIALMembers can start a 7-Day Free trial then enjoy unlimited access to the platform.
View membership options
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
Is this with a USB-Serial adapter or are you using a serial port directly?